X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=blobdiff_plain;f=collision.c;h=e0cc37dd817c1644a0dbac94750ed75ab328fcf2;hp=20fc83997119c3973d3561eafe3d08651e93806d;hb=ab9e8a37699390a5dc199e4def9cdbaaa59d82cf;hpb=80b09064d8227075b6e9c4dfe4b007c6676082f5 diff --git a/collision.c b/collision.c index 20fc8399..e0cc37dd 100644 --- a/collision.c +++ b/collision.c @@ -2,6 +2,8 @@ #include "quakedef.h" #include "polygon.h" +#define COLLISION_EDGEDIR_DOT_EPSILON (0.999f) +#define COLLISION_EDGECROSS_MINLENGTH2 (1.0f / 4194304.0f) #define COLLISION_SNAPSCALE (32.0f) #define COLLISION_SNAP (1.0f / COLLISION_SNAPSCALE) #define COLLISION_SNAP2 (2.0f / COLLISION_SNAPSCALE) @@ -13,6 +15,13 @@ cvar_t collision_endnudge = {0, "collision_endnudge", "0", "how much to bias col cvar_t collision_enternudge = {0, "collision_enternudge", "0", "how much to bias collision entry fraction"}; cvar_t collision_leavenudge = {0, "collision_leavenudge", "0", "how much to bias collision exit fraction"}; cvar_t collision_prefernudgedfraction = {0, "collision_prefernudgedfraction", "1", "whether to sort collision events by nudged fraction (1) or real fraction (0)"}; +#ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND +cvar_t collision_endposnudge = {0, "collision_endposnudge", "0", "workaround to fix trace_endpos sometimes being returned where it would be inside solid by making that collision hit (recommended: values like 1)"}; +#endif +cvar_t collision_debug_tracelineasbox = {0, "collision_debug_tracelineasbox", "0", "workaround for any bugs in Collision_TraceLineBrushFloat by using Collision_TraceBrushBrushFloat"}; +cvar_t collision_cache = {0, "collision_cache", "1", "store results of collision traces for next frame to reuse if possible (optimization)"}; + +mempool_t *collision_mempool; void Collision_Init (void) { @@ -22,6 +31,13 @@ void Collision_Init (void) Cvar_RegisterVariable(&collision_enternudge); Cvar_RegisterVariable(&collision_leavenudge); Cvar_RegisterVariable(&collision_prefernudgedfraction); +#ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND + Cvar_RegisterVariable(&collision_endposnudge); +#endif + Cvar_RegisterVariable(&collision_debug_tracelineasbox); + Cvar_RegisterVariable(&collision_cache); + collision_mempool = Mem_AllocPool("collision cache", 0, NULL); + Collision_Cache_Init(collision_mempool); } @@ -140,15 +156,23 @@ float furthestplanedist_float(const float *normal, const colpointf_t *points, in return bestdist; } +void Collision_CalcEdgeDirsForPolygonBrushFloat(colbrushf_t *brush) +{ + int i, j; + for (i = 0, j = brush->numpoints - 1;i < brush->numpoints;j = i, i++) + VectorSubtract(brush->points[i].v, brush->points[j].v, brush->edgedirs[j].v); +} -colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalplanes, const colplanef_t *originalplanes, int supercontents) +colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalplanes, const colplanef_t *originalplanes, int supercontents, int q3surfaceflags, const texture_t *texture, int hasaabbplanes) { // TODO: planesbuf could be replaced by a remapping table - int j, k, m, w, xyzflags; - int numpointsbuf = 0, maxpointsbuf = 256, numplanesbuf = 0, maxplanesbuf = 256, numelementsbuf = 0, maxelementsbuf = 256; + int j, k, l, m, w, xyzflags; + int numpointsbuf = 0, maxpointsbuf = 256, numedgedirsbuf = 0, maxedgedirsbuf = 256, numplanesbuf = 0, maxplanesbuf = 256, numelementsbuf = 0, maxelementsbuf = 256; + int isaabb = true; double maxdist; colbrushf_t *brush; colpointf_t pointsbuf[256]; + colpointf_t edgedirsbuf[256]; colplanef_t planesbuf[256]; int elementsbuf[1024]; int polypointbuf[256]; @@ -156,13 +180,22 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla int pnumpoints; double p[2][3*64]; #if 0 - // enable these if debugging to avoid seeing garbage in unused data + // enable these if debugging to avoid seeing garbage in unused data- memset(pointsbuf, 0, sizeof(pointsbuf)); + memset(edgedirsbuf, 0, sizeof(edgedirsbuf)); memset(planesbuf, 0, sizeof(planesbuf)); memset(elementsbuf, 0, sizeof(elementsbuf)); memset(polypointbuf, 0, sizeof(polypointbuf)); memset(p, 0, sizeof(p)); #endif + + // check if there are too many planes and skip the brush + if (numoriginalplanes >= maxplanesbuf) + { + Con_DPrint("Collision_NewBrushFromPlanes: failed to build collision brush: too many planes for buffer\n"); + return NULL; + } + // figure out how large a bounding box we need to properly compute this brush maxdist = 0; for (j = 0;j < numoriginalplanes;j++) @@ -174,20 +207,6 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla // whose polygon is clipped away by the other planes) for (j = 0;j < numoriginalplanes;j++) { - // add the plane uniquely (no duplicates) - for (k = 0;k < numplanesbuf;k++) - if (VectorCompare(planesbuf[k].normal, originalplanes[j].normal) && planesbuf[k].dist == originalplanes[j].dist) - break; - // if the plane is a duplicate, skip it - if (k < numplanesbuf) - continue; - // check if there are too many and skip the brush - if (numplanesbuf >= maxplanesbuf) - { - Con_DPrint("Collision_NewBrushFromPlanes: failed to build collision brush: too many planes for buffer\n"); - return NULL; - } - // add the new plane VectorCopy(originalplanes[j].normal, planesbuf[numplanesbuf].normal); planesbuf[numplanesbuf].dist = originalplanes[j].dist; @@ -250,6 +269,7 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla return NULL; } + // add the unique points for this polygon for (k = 0;k < pnumpoints;k++) { float v[3]; @@ -287,6 +307,47 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla elementsbuf[numelementsbuf++] = polypointbuf[k + 1]; elementsbuf[numelementsbuf++] = polypointbuf[k + 2]; } + + // add the unique edgedirs for this polygon + for (k = 0, l = pnumpoints-1;k < pnumpoints;l = k, k++) + { + float dir[3]; + // downgrade to float precision before comparing + VectorSubtract(&p[w][k*3], &p[w][l*3], dir); + VectorNormalize(dir); + + // check if there is already a matching edgedir (no duplicates) + for (m = 0;m < numedgedirsbuf;m++) + if (DotProduct(dir, edgedirsbuf[m].v) >= COLLISION_EDGEDIR_DOT_EPSILON) + break; + // skip this if there is + if (m < numedgedirsbuf) + continue; + + // try again with negated edgedir + VectorNegate(dir, dir); + // check if there is already a matching edgedir (no duplicates) + for (m = 0;m < numedgedirsbuf;m++) + if (DotProduct(dir, edgedirsbuf[m].v) >= COLLISION_EDGEDIR_DOT_EPSILON) + break; + // if there is no match, add a new one + if (m == numedgedirsbuf) + { + // check if there are too many and skip the brush + if (numedgedirsbuf >= maxedgedirsbuf) + { + Con_DPrint("Collision_NewBrushFromPlanes: failed to build collision brush: too many edgedirs for buffer\n"); + return NULL; + } + // add the new one + VectorCopy(dir, edgedirsbuf[numedgedirsbuf].v); + numedgedirsbuf++; + } + } + + // if any normal is not purely axial, it's not an axis-aligned box + if (isaabb && (originalplanes[j].normal[0] == 0) + (originalplanes[j].normal[1] == 0) + (originalplanes[j].normal[2] == 0) < 2) + isaabb = false; } // if nothing is left, there's nothing to allocate @@ -309,20 +370,32 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla } // allocate the brush and copy to it - brush = (colbrushf_t *)Mem_Alloc(mempool, sizeof(colbrushf_t) + sizeof(colpointf_t) * numpointsbuf + sizeof(colplanef_t) * numplanesbuf + sizeof(int) * numelementsbuf); + brush = (colbrushf_t *)Mem_Alloc(mempool, sizeof(colbrushf_t) + sizeof(colpointf_t) * numpointsbuf + sizeof(colpointf_t) * numedgedirsbuf + sizeof(colplanef_t) * numplanesbuf + sizeof(int) * numelementsbuf); + brush->isaabb = isaabb; + brush->hasaabbplanes = hasaabbplanes; brush->supercontents = supercontents; brush->numplanes = numplanesbuf; + brush->numedgedirs = numedgedirsbuf; brush->numpoints = numpointsbuf; brush->numtriangles = numelementsbuf / 3; brush->planes = (colplanef_t *)(brush + 1); brush->points = (colpointf_t *)(brush->planes + brush->numplanes); + brush->edgedirs = (colpointf_t *)(brush->points + brush->numpoints); brush->elements = (int *)(brush->points + brush->numpoints); + brush->q3surfaceflags = q3surfaceflags; + brush->texture = texture; for (j = 0;j < brush->numpoints;j++) { brush->points[j].v[0] = pointsbuf[j].v[0]; brush->points[j].v[1] = pointsbuf[j].v[1]; brush->points[j].v[2] = pointsbuf[j].v[2]; } + for (j = 0;j < brush->numedgedirs;j++) + { + brush->edgedirs[j].v[0] = edgedirsbuf[j].v[0]; + brush->edgedirs[j].v[1] = edgedirsbuf[j].v[1]; + brush->edgedirs[j].v[2] = edgedirsbuf[j].v[2]; + } for (j = 0;j < brush->numplanes;j++) { brush->planes[j].normal[0] = planesbuf[j].normal[0]; @@ -395,6 +468,7 @@ void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush) else { brush->numplanes = 5; + brush->numedgedirs = 3; VectorNormalize(brush->planes[0].normal); brush->planes[0].dist = DotProduct(brush->points->v, brush->planes[0].normal); VectorNegate(brush->planes[0].normal, brush->planes[1].normal); @@ -402,6 +476,9 @@ void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush) VectorSubtract(brush->points[2].v, brush->points[0].v, edge0); VectorSubtract(brush->points[0].v, brush->points[1].v, edge1); VectorSubtract(brush->points[1].v, brush->points[2].v, edge2); + VectorCopy(edge0, brush->edgedirs[0].v); + VectorCopy(edge1, brush->edgedirs[1].v); + VectorCopy(edge2, brush->edgedirs[2].v); #if 1 { float projectionnormal[3], projectionedge0[3], projectionedge1[3], projectionedge2[3]; @@ -445,7 +522,7 @@ void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush) brush->planes[3].dist = DotProduct(brush->points[0].v, brush->planes[3].normal); brush->planes[4].dist = DotProduct(brush->points[1].v, brush->planes[4].normal); - if (developer.integer >= 100) + if (developer_extra.integer) { // validation code #if 0 @@ -457,34 +534,34 @@ void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush) VectorNormalize(normal); VectorSubtract(normal, brush->planes[0].normal, temp); if (VectorLength(temp) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: TriangleNormal gave wrong answer (%f %f %f != correct answer %f %f %f)\n", brush->planes->normal[0], brush->planes->normal[1], brush->planes->normal[2], normal[0], normal[1], normal[2]); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: TriangleNormal gave wrong answer (%f %f %f != correct answer %f %f %f)\n", brush->planes->normal[0], brush->planes->normal[1], brush->planes->normal[2], normal[0], normal[1], normal[2]); if (fabs(DotProduct(brush->planes[1].normal, brush->planes[0].normal) - -1.0f) > 0.01f || fabs(brush->planes[1].dist - -brush->planes[0].dist) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: plane 1 (%f %f %f %f) is not opposite plane 0 (%f %f %f %f)\n", brush->planes[1].normal[0], brush->planes[1].normal[1], brush->planes[1].normal[2], brush->planes[1].dist, brush->planes[0].normal[0], brush->planes[0].normal[1], brush->planes[0].normal[2], brush->planes[0].dist); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: plane 1 (%f %f %f %f) is not opposite plane 0 (%f %f %f %f)\n", brush->planes[1].normal[0], brush->planes[1].normal[1], brush->planes[1].normal[2], brush->planes[1].dist, brush->planes[0].normal[0], brush->planes[0].normal[1], brush->planes[0].normal[2], brush->planes[0].dist); #if 0 if (fabs(DotProduct(brush->planes[2].normal, brush->planes[0].normal)) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: plane 2 (%f %f %f %f) is not perpendicular to plane 0 (%f %f %f %f)\n", brush->planes[2].normal[0], brush->planes[2].normal[1], brush->planes[2].normal[2], brush->planes[2].dist, brush->planes[0].normal[0], brush->planes[0].normal[1], brush->planes[0].normal[2], brush->planes[2].dist); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: plane 2 (%f %f %f %f) is not perpendicular to plane 0 (%f %f %f %f)\n", brush->planes[2].normal[0], brush->planes[2].normal[1], brush->planes[2].normal[2], brush->planes[2].dist, brush->planes[0].normal[0], brush->planes[0].normal[1], brush->planes[0].normal[2], brush->planes[2].dist); if (fabs(DotProduct(brush->planes[3].normal, brush->planes[0].normal)) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: plane 3 (%f %f %f %f) is not perpendicular to plane 0 (%f %f %f %f)\n", brush->planes[3].normal[0], brush->planes[3].normal[1], brush->planes[3].normal[2], brush->planes[3].dist, brush->planes[0].normal[0], brush->planes[0].normal[1], brush->planes[0].normal[2], brush->planes[3].dist); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: plane 3 (%f %f %f %f) is not perpendicular to plane 0 (%f %f %f %f)\n", brush->planes[3].normal[0], brush->planes[3].normal[1], brush->planes[3].normal[2], brush->planes[3].dist, brush->planes[0].normal[0], brush->planes[0].normal[1], brush->planes[0].normal[2], brush->planes[3].dist); if (fabs(DotProduct(brush->planes[4].normal, brush->planes[0].normal)) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: plane 4 (%f %f %f %f) is not perpendicular to plane 0 (%f %f %f %f)\n", brush->planes[4].normal[0], brush->planes[4].normal[1], brush->planes[4].normal[2], brush->planes[4].dist, brush->planes[0].normal[0], brush->planes[0].normal[1], brush->planes[0].normal[2], brush->planes[4].dist); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: plane 4 (%f %f %f %f) is not perpendicular to plane 0 (%f %f %f %f)\n", brush->planes[4].normal[0], brush->planes[4].normal[1], brush->planes[4].normal[2], brush->planes[4].dist, brush->planes[0].normal[0], brush->planes[0].normal[1], brush->planes[0].normal[2], brush->planes[4].dist); if (fabs(DotProduct(brush->planes[2].normal, edge0)) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: plane 2 (%f %f %f %f) is not perpendicular to edge 0 (%f %f %f to %f %f %f)\n", brush->planes[2].normal[0], brush->planes[2].normal[1], brush->planes[2].normal[2], brush->planes[2].dist, brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2], brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2]); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: plane 2 (%f %f %f %f) is not perpendicular to edge 0 (%f %f %f to %f %f %f)\n", brush->planes[2].normal[0], brush->planes[2].normal[1], brush->planes[2].normal[2], brush->planes[2].dist, brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2], brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2]); if (fabs(DotProduct(brush->planes[3].normal, edge1)) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: plane 3 (%f %f %f %f) is not perpendicular to edge 1 (%f %f %f to %f %f %f)\n", brush->planes[3].normal[0], brush->planes[3].normal[1], brush->planes[3].normal[2], brush->planes[3].dist, brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2], brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2]); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: plane 3 (%f %f %f %f) is not perpendicular to edge 1 (%f %f %f to %f %f %f)\n", brush->planes[3].normal[0], brush->planes[3].normal[1], brush->planes[3].normal[2], brush->planes[3].dist, brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2], brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2]); if (fabs(DotProduct(brush->planes[4].normal, edge2)) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: plane 4 (%f %f %f %f) is not perpendicular to edge 2 (%f %f %f to %f %f %f)\n", brush->planes[4].normal[0], brush->planes[4].normal[1], brush->planes[4].normal[2], brush->planes[4].dist, brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2], brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2]); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: plane 4 (%f %f %f %f) is not perpendicular to edge 2 (%f %f %f to %f %f %f)\n", brush->planes[4].normal[0], brush->planes[4].normal[1], brush->planes[4].normal[2], brush->planes[4].dist, brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2], brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2]); #endif #endif if (fabs(DotProduct(brush->points[0].v, brush->planes[0].normal) - brush->planes[0].dist) > 0.01f || fabs(DotProduct(brush->points[1].v, brush->planes[0].normal) - brush->planes[0].dist) > 0.01f || fabs(DotProduct(brush->points[2].v, brush->planes[0].normal) - brush->planes[0].dist) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: edges (%f %f %f to %f %f %f to %f %f %f) off front plane 0 (%f %f %f %f)\n", brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2], brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2], brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2], brush->planes[0].normal[0], brush->planes[0].normal[1], brush->planes[0].normal[2], brush->planes[0].dist); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: edges (%f %f %f to %f %f %f to %f %f %f) off front plane 0 (%f %f %f %f)\n", brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2], brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2], brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2], brush->planes[0].normal[0], brush->planes[0].normal[1], brush->planes[0].normal[2], brush->planes[0].dist); if (fabs(DotProduct(brush->points[0].v, brush->planes[1].normal) - brush->planes[1].dist) > 0.01f || fabs(DotProduct(brush->points[1].v, brush->planes[1].normal) - brush->planes[1].dist) > 0.01f || fabs(DotProduct(brush->points[2].v, brush->planes[1].normal) - brush->planes[1].dist) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: edges (%f %f %f to %f %f %f to %f %f %f) off back plane 1 (%f %f %f %f)\n", brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2], brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2], brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2], brush->planes[1].normal[0], brush->planes[1].normal[1], brush->planes[1].normal[2], brush->planes[1].dist); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: edges (%f %f %f to %f %f %f to %f %f %f) off back plane 1 (%f %f %f %f)\n", brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2], brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2], brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2], brush->planes[1].normal[0], brush->planes[1].normal[1], brush->planes[1].normal[2], brush->planes[1].dist); if (fabs(DotProduct(brush->points[2].v, brush->planes[2].normal) - brush->planes[2].dist) > 0.01f || fabs(DotProduct(brush->points[0].v, brush->planes[2].normal) - brush->planes[2].dist) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: edge 0 (%f %f %f to %f %f %f) off front plane 2 (%f %f %f %f)\n", brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2], brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2], brush->planes[2].normal[0], brush->planes[2].normal[1], brush->planes[2].normal[2], brush->planes[2].dist); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: edge 0 (%f %f %f to %f %f %f) off front plane 2 (%f %f %f %f)\n", brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2], brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2], brush->planes[2].normal[0], brush->planes[2].normal[1], brush->planes[2].normal[2], brush->planes[2].dist); if (fabs(DotProduct(brush->points[0].v, brush->planes[3].normal) - brush->planes[3].dist) > 0.01f || fabs(DotProduct(brush->points[1].v, brush->planes[3].normal) - brush->planes[3].dist) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: edge 0 (%f %f %f to %f %f %f) off front plane 2 (%f %f %f %f)\n", brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2], brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2], brush->planes[3].normal[0], brush->planes[3].normal[1], brush->planes[3].normal[2], brush->planes[3].dist); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: edge 0 (%f %f %f to %f %f %f) off front plane 2 (%f %f %f %f)\n", brush->points[0].v[0], brush->points[0].v[1], brush->points[0].v[2], brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2], brush->planes[3].normal[0], brush->planes[3].normal[1], brush->planes[3].normal[2], brush->planes[3].dist); if (fabs(DotProduct(brush->points[1].v, brush->planes[4].normal) - brush->planes[4].dist) > 0.01f || fabs(DotProduct(brush->points[2].v, brush->planes[4].normal) - brush->planes[4].dist) > 0.01f) - Con_Printf("Collision_CalcPlanesForPolygonBrushFloat: edge 0 (%f %f %f to %f %f %f) off front plane 2 (%f %f %f %f)\n", brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2], brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2], brush->planes[4].normal[0], brush->planes[4].normal[1], brush->planes[4].normal[2], brush->planes[4].dist); + Con_DPrintf("Collision_CalcPlanesForPolygonBrushFloat: edge 0 (%f %f %f to %f %f %f) off front plane 2 (%f %f %f %f)\n", brush->points[1].v[0], brush->points[1].v[1], brush->points[1].v[2], brush->points[2].v[0], brush->points[2].v[1], brush->points[2].v[2], brush->planes[4].normal[0], brush->planes[4].normal[1], brush->planes[4].normal[2], brush->planes[4].dist); } } } @@ -530,7 +607,7 @@ void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush) } } - if (developer.integer >= 100) + if (developer_extra.integer) { // validity check - will be disabled later Collision_ValidateBrush(brush); @@ -539,88 +616,133 @@ void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush) int j; for (j = 0, p = brush->points;j < brush->numpoints;j++, p++) if (DotProduct(p->v, brush->planes[i].normal) > brush->planes[i].dist + COLLISION_PLANE_DIST_EPSILON) - Con_Printf("Error in brush plane generation, plane %i\n", i); + Con_DPrintf("Error in brush plane generation, plane %i\n", i); } } } -colbrushf_t *Collision_AllocBrushFromPermanentPolygonFloat(mempool_t *mempool, int numpoints, float *points, int supercontents) +colbrushf_t *Collision_AllocBrushFromPermanentPolygonFloat(mempool_t *mempool, int numpoints, float *points, int supercontents, int q3surfaceflags, const texture_t *texture) { colbrushf_t *brush; - brush = (colbrushf_t *)Mem_Alloc(mempool, sizeof(colbrushf_t) + sizeof(colplanef_t) * (numpoints + 2)); + brush = (colbrushf_t *)Mem_Alloc(mempool, sizeof(colbrushf_t) + sizeof(colplanef_t) * (numpoints + 2) + sizeof(colpointf_t) * numpoints); + brush->isaabb = false; + brush->hasaabbplanes = false; brush->supercontents = supercontents; brush->numpoints = numpoints; + brush->numedgedirs = numpoints; brush->numplanes = numpoints + 2; brush->planes = (colplanef_t *)(brush + 1); brush->points = (colpointf_t *)points; + brush->edgedirs = (colpointf_t *)(brush->planes + brush->numplanes); + brush->q3surfaceflags = q3surfaceflags; + brush->texture = texture; Sys_Error("Collision_AllocBrushFromPermanentPolygonFloat: FIXME: this code needs to be updated to generate a mesh..."); return brush; } // NOTE: start and end of each brush pair must have same numplanes/numpoints -void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, const colbrushf_t *thatbrush_start, const colbrushf_t *thatbrush_end) +void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *trace_start, const colbrushf_t *trace_end, const colbrushf_t *other_start, const colbrushf_t *other_end) { - int nplane, nplane2, hitq3surfaceflags = 0; - float enterfrac = -1, leavefrac = 1, d1, d2, f, imove, newimpactnormal[3], enterfrac2 = -1; - const colplanef_t *startplane, *endplane; - texture_t *hittexture = NULL; - - VectorClear(newimpactnormal); - - for (nplane = 0;nplane < thatbrush_start->numplanes + thisbrush_start->numplanes;nplane++) + int nplane, nplane2, nedge1, nedge2, hitq3surfaceflags = 0; + int tracenumedgedirs = trace_start->numedgedirs; + //int othernumedgedirs = other_start->numedgedirs; + int tracenumpoints = trace_start->numpoints; + int othernumpoints = other_start->numpoints; + int numplanes1 = other_start->numplanes; + int numplanes2 = numplanes1 + trace_start->numplanes; + int numplanes3 = numplanes2 + trace_start->numedgedirs * other_start->numedgedirs * 2; + vec_t enterfrac = -1, leavefrac = 1, startdist, enddist, ie, f, imove, enterfrac2 = -1; + vec4_t startplane; + vec4_t endplane; + vec4_t newimpactplane; + const texture_t *hittexture = NULL; + vec_t startdepth = 1; + vec3_t startdepthnormal; + + VectorClear(startdepthnormal); + Vector4Clear(newimpactplane); + + // fast case for AABB vs compiled brushes (which begin with AABB planes and also have precomputed bevels for AABB collisions) + if (trace_start->isaabb && other_start->hasaabbplanes) + numplanes3 = numplanes2 = numplanes1; + + // Separating Axis Theorem: + // if a supporting vector (plane normal) can be found that separates two + // objects, they are not colliding. + // + // Minkowski Sum: + // reduce the size of one object to a point while enlarging the other to + // represent the space that point can not occupy. + // + // try every plane we can construct between the two brushes and measure + // the distance between them. + for (nplane = 0;nplane < numplanes3;nplane++) { - nplane2 = nplane; - if (nplane2 >= thatbrush_start->numplanes) + if (nplane < numplanes1) { - nplane2 -= thatbrush_start->numplanes; - startplane = thisbrush_start->planes + nplane2; - endplane = thisbrush_end->planes + nplane2; - if (developer.integer >= 100) - { - // any brush with degenerate planes is not worth handling - if (DotProduct(startplane->normal, startplane->normal) < 0.9f || DotProduct(endplane->normal, endplane->normal) < 0.9f) - { - Con_Print("Collision_TraceBrushBrushFloat: degenerate thisbrush plane!\n"); - return; - } - f = furthestplanedist_float(startplane->normal, thisbrush_start->points, thisbrush_start->numpoints); - if (fabs(f - startplane->dist) > COLLISION_PLANE_DIST_EPSILON) - Con_Printf("startplane->dist %f != calculated %f (thisbrush_start)\n", startplane->dist, f); - } - d1 = nearestplanedist_float(startplane->normal, thisbrush_start->points, thisbrush_start->numpoints) - furthestplanedist_float(startplane->normal, thatbrush_start->points, thatbrush_start->numpoints) - collision_startnudge.value; - d2 = nearestplanedist_float(endplane->normal, thisbrush_end->points, thisbrush_end->numpoints) - furthestplanedist_float(endplane->normal, thatbrush_end->points, thatbrush_end->numpoints) - collision_endnudge.value; + nplane2 = nplane; + VectorCopy(other_start->planes[nplane2].normal, startplane); + VectorCopy(other_end->planes[nplane2].normal, endplane); + } + else if (nplane < numplanes2) + { + nplane2 = nplane - numplanes1; + VectorCopy(trace_start->planes[nplane2].normal, startplane); + VectorCopy(trace_end->planes[nplane2].normal, endplane); } else { - startplane = thatbrush_start->planes + nplane2; - endplane = thatbrush_end->planes + nplane2; - if (developer.integer >= 100) + // pick an edgedir from each brush and cross them + nplane2 = nplane - numplanes2; + nedge1 = nplane2 >> 1; + nedge2 = nedge1 / tracenumedgedirs; + nedge1 -= nedge2 * tracenumedgedirs; + if (nplane2 & 1) { - // any brush with degenerate planes is not worth handling - if (DotProduct(startplane->normal, startplane->normal) < 0.9f || DotProduct(endplane->normal, endplane->normal) < 0.9f) - { - Con_Print("Collision_TraceBrushBrushFloat: degenerate thatbrush plane!\n"); - return; - } - f = furthestplanedist_float(startplane->normal, thatbrush_start->points, thatbrush_start->numpoints); - if (fabs(f - startplane->dist) > COLLISION_PLANE_DIST_EPSILON) - Con_Printf("startplane->dist %f != calculated %f (thatbrush_start)\n", startplane->dist, f); + CrossProduct(trace_start->edgedirs[nedge1].v, other_start->edgedirs[nedge2].v, startplane); + if (VectorLength2(startplane) < COLLISION_EDGECROSS_MINLENGTH2) + continue; // degenerate crossproduct + CrossProduct(trace_end->edgedirs[nedge1].v, other_end->edgedirs[nedge2].v, endplane); + if (VectorLength2(endplane) < COLLISION_EDGECROSS_MINLENGTH2) + continue; // degenerate crossproduct + } + else + { + CrossProduct(other_start->edgedirs[nedge2].v, trace_start->edgedirs[nedge1].v, startplane); + if (VectorLength2(startplane) < COLLISION_EDGECROSS_MINLENGTH2) + continue; // degenerate crossproduct + CrossProduct(other_end->edgedirs[nedge2].v, trace_end->edgedirs[nedge1].v, endplane); + if (VectorLength2(endplane) < COLLISION_EDGECROSS_MINLENGTH2) + continue; // degenerate crossproduct } - d1 = nearestplanedist_float(startplane->normal, thisbrush_start->points, thisbrush_start->numpoints) - startplane->dist - collision_startnudge.value; - d2 = nearestplanedist_float(endplane->normal, thisbrush_end->points, thisbrush_end->numpoints) - endplane->dist - collision_endnudge.value; + VectorNormalize(startplane); + VectorNormalize(endplane); + } + startplane[3] = furthestplanedist_float(startplane, other_start->points, othernumpoints); + endplane[3] = furthestplanedist_float(startplane, other_end->points, othernumpoints); + startdist = nearestplanedist_float(startplane, trace_start->points, tracenumpoints) - startplane[3] - collision_startnudge.value; + enddist = nearestplanedist_float(endplane, trace_end->points, tracenumpoints) - endplane[3] - collision_endnudge.value; + //Con_Printf("%c%i: startdist = %f, enddist = %f, startdist / (startdist - enddist) = %f\n", nplane2 != nplane ? 'b' : 'a', nplane2, startdist, enddist, startdist / (startdist - enddist)); + + // aside from collisions, this is also used for error correction + if (startdist < collision_impactnudge.value && nplane < numplanes1 && (startdepth < startdist || startdepth == 1)) + { + startdepth = startdist; + VectorCopy(startplane, startdepthnormal); } - //Con_Printf("%c%i: d1 = %f, d2 = %f, d1 / (d1 - d2) = %f\n", nplane2 != nplane ? 'b' : 'a', nplane2, d1, d2, d1 / (d1 - d2)); - if (d1 > d2) + if (startdist > enddist) { // moving into brush - if (d2 > 0) + if (enddist >= collision_enternudge.value) return; - if (d1 > 0) + if (startdist > 0) { // enter - imove = 1 / (d1 - d2); - f = (d1 - collision_enternudge.value) * imove; + imove = 1 / (startdist - enddist); + f = (startdist - collision_enternudge.value) * imove; + if (f < 0) + f = 0; // check if this will reduce the collision time range if (enterfrac < f) { @@ -636,22 +758,45 @@ void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush return; // calculate the nudged fraction and impact normal we'll // need if we accept this collision later - enterfrac2 = f - collision_impactnudge.value * imove; - VectorLerp(startplane->normal, enterfrac, endplane->normal, newimpactnormal); - hitq3surfaceflags = startplane->q3surfaceflags; - hittexture = startplane->texture; + enterfrac2 = (startdist - collision_impactnudge.value) * imove; + ie = 1.0f - enterfrac; + newimpactplane[0] = startplane[0] * ie + endplane[0] * enterfrac; + newimpactplane[1] = startplane[1] * ie + endplane[1] * enterfrac; + newimpactplane[2] = startplane[2] * ie + endplane[2] * enterfrac; + newimpactplane[3] = startplane[3] * ie + endplane[3] * enterfrac; + if (nplane < numplanes1) + { + // use the plane from other + nplane2 = nplane; + hitq3surfaceflags = other_start->planes[nplane2].q3surfaceflags; + hittexture = other_start->planes[nplane2].texture; + } + else if (nplane < numplanes2) + { + // use the plane from trace + nplane2 = nplane - numplanes1; + hitq3surfaceflags = trace_start->planes[nplane2].q3surfaceflags; + hittexture = trace_start->planes[nplane2].texture; + } + else + { + hitq3surfaceflags = other_start->q3surfaceflags; + hittexture = other_start->texture; + } } } } else { // moving out of brush - if (d1 > 0) + if (startdist > 0) return; - if (d2 > 0) + if (enddist > 0) { // leave - f = (d1 + collision_leavenudge.value) / (d1 - d2); + f = (startdist + collision_leavenudge.value) / (startdist - enddist); + if (f > 1) + f = 1; // check if this will reduce the collision time range if (leavefrac > f) { @@ -668,76 +813,108 @@ void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush // at this point we know the trace overlaps the brush because it was not // rejected at any point in the loop above - // see if this brush can block the trace or not according to contents - if (trace->hitsupercontentsmask & thatbrush_start->supercontents) + // see if the trace started outside the brush or not + if (enterfrac > -1) { - if (enterfrac == -1) + // started outside, and overlaps, therefore there is a collision here + // store out the impact information + if (trace->hitsupercontentsmask & other_start->supercontents) { - trace->startsupercontents |= thatbrush_start->supercontents; - trace->startsolid = true; - if (leavefrac < 1) - trace->allsolid = true; + trace->hitsupercontents = other_start->supercontents; + trace->hitq3surfaceflags = hitq3surfaceflags; + trace->hittexture = hittexture; + trace->realfraction = bound(0, enterfrac, 1); + trace->fraction = bound(0, enterfrac2, 1); + if (collision_prefernudgedfraction.integer) + trace->realfraction = trace->fraction; + VectorCopy(newimpactplane, trace->plane.normal); + trace->plane.dist = newimpactplane[3]; } - // store out the impact information - trace->hitsupercontents = thatbrush_start->supercontents; - trace->hitq3surfaceflags = hitq3surfaceflags; - trace->hittexture = hittexture; - trace->realfraction = bound(0, enterfrac, 1); - trace->fraction = bound(0, enterfrac2, 1); - if (collision_prefernudgedfraction.integer) - trace->realfraction = trace->fraction; - VectorCopy(newimpactnormal, trace->plane.normal); } else { - // this brush can not block the trace, but it can update start contents - if (enterfrac == -1) - trace->startsupercontents |= thatbrush_start->supercontents; + // started inside, update startsolid and friends + trace->startsupercontents |= other_start->supercontents; + if (trace->hitsupercontentsmask & other_start->supercontents) + { + trace->startsolid = true; + if (leavefrac < 1) + trace->allsolid = true; + VectorCopy(newimpactplane, trace->plane.normal); + trace->plane.dist = newimpactplane[3]; + if (trace->startdepth > startdepth) + { + trace->startdepth = startdepth; + VectorCopy(startdepthnormal, trace->startdepthnormal); + } + } } } -// NOTE: start and end brush pair must have same numplanes/numpoints -void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, const colbrushf_t *thatbrush_start, const colbrushf_t *thatbrush_end) +// NOTE: start and end of each brush pair must have same numplanes/numpoints +void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, const colbrushf_t *other_start, const colbrushf_t *other_end) { int nplane, hitq3surfaceflags = 0; - float enterfrac = -1, leavefrac = 1, d1, d2, f, imove, newimpactnormal[3], enterfrac2 = -1; - const colplanef_t *startplane, *endplane; - texture_t *hittexture = NULL; - - VectorClear(newimpactnormal); + int numplanes = other_start->numplanes; + vec_t enterfrac = -1, leavefrac = 1, startdist, enddist, ie, f, imove, enterfrac2 = -1; + vec4_t startplane; + vec4_t endplane; + vec4_t newimpactplane; + const texture_t *hittexture = NULL; + vec_t startdepth = 1; + vec3_t startdepthnormal; + + if (collision_debug_tracelineasbox.integer) + { + colboxbrushf_t thisbrush_start, thisbrush_end; + Collision_BrushForBox(&thisbrush_start, linestart, linestart, 0, 0, NULL); + Collision_BrushForBox(&thisbrush_end, lineend, lineend, 0, 0, NULL); + Collision_TraceBrushBrushFloat(trace, &thisbrush_start.brush, &thisbrush_end.brush, other_start, other_end); + return; + } - for (nplane = 0;nplane < thatbrush_start->numplanes;nplane++) + VectorClear(startdepthnormal); + Vector4Clear(newimpactplane); + + // Separating Axis Theorem: + // if a supporting vector (plane normal) can be found that separates two + // objects, they are not colliding. + // + // Minkowski Sum: + // reduce the size of one object to a point while enlarging the other to + // represent the space that point can not occupy. + // + // try every plane we can construct between the two brushes and measure + // the distance between them. + for (nplane = 0;nplane < numplanes;nplane++) { - startplane = thatbrush_start->planes + nplane; - endplane = thatbrush_end->planes + nplane; - d1 = DotProduct(startplane->normal, linestart) - startplane->dist - collision_startnudge.value; - d2 = DotProduct(endplane->normal, lineend) - endplane->dist - collision_endnudge.value; - if (developer.integer >= 100) + VectorCopy(other_start->planes[nplane].normal, startplane); + startplane[3] = other_start->planes[nplane].dist; + VectorCopy(other_end->planes[nplane].normal, endplane); + endplane[3] = other_end->planes[nplane].dist; + startdist = DotProduct(linestart, startplane) - startplane[3] - collision_startnudge.value; + enddist = DotProduct(lineend, endplane) - endplane[3] - collision_endnudge.value; + //Con_Printf("%c%i: startdist = %f, enddist = %f, startdist / (startdist - enddist) = %f\n", nplane2 != nplane ? 'b' : 'a', nplane2, startdist, enddist, startdist / (startdist - enddist)); + + // aside from collisions, this is also used for error correction + if (startdist < collision_impactnudge.value && (startdepth < startdist || startdepth == 1)) { - // any brush with degenerate planes is not worth handling - if (DotProduct(startplane->normal, startplane->normal) < 0.9f || DotProduct(endplane->normal, endplane->normal) < 0.9f) - { - Con_Print("Collision_TraceLineBrushFloat: degenerate plane!\n"); - return; - } - if (thatbrush_start->numpoints) - { - f = furthestplanedist_float(startplane->normal, thatbrush_start->points, thatbrush_start->numpoints); - if (fabs(f - startplane->dist) > COLLISION_PLANE_DIST_EPSILON) - Con_Printf("startplane->dist %f != calculated %f\n", startplane->dist, f); - } + startdepth = startdist; + VectorCopy(startplane, startdepthnormal); } - if (d1 > d2) + if (startdist > enddist) { // moving into brush - if (d2 > 0) + if (enddist >= collision_enternudge.value) return; - if (d1 > 0) + if (startdist > 0) { // enter - imove = 1 / (d1 - d2); - f = (d1 - collision_enternudge.value) * imove; + imove = 1 / (startdist - enddist); + f = (startdist - collision_enternudge.value) * imove; + if (f < 0) + f = 0; // check if this will reduce the collision time range if (enterfrac < f) { @@ -753,22 +930,28 @@ void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const return; // calculate the nudged fraction and impact normal we'll // need if we accept this collision later - enterfrac2 = f - collision_impactnudge.value * imove; - VectorLerp(startplane->normal, enterfrac, endplane->normal, newimpactnormal); - hitq3surfaceflags = startplane->q3surfaceflags; - hittexture = startplane->texture; + enterfrac2 = (startdist - collision_impactnudge.value) * imove; + ie = 1.0f - enterfrac; + newimpactplane[0] = startplane[0] * ie + endplane[0] * enterfrac; + newimpactplane[1] = startplane[1] * ie + endplane[1] * enterfrac; + newimpactplane[2] = startplane[2] * ie + endplane[2] * enterfrac; + newimpactplane[3] = startplane[3] * ie + endplane[3] * enterfrac; + hitq3surfaceflags = other_start->planes[nplane].q3surfaceflags; + hittexture = other_start->planes[nplane].texture; } } } else { // moving out of brush - if (d1 > 0) + if (startdist > 0) return; - if (d2 > 0) + if (enddist > 0) { // leave - f = (d1 + collision_leavenudge.value) / (d1 - d2); + f = (startdist + collision_leavenudge.value) / (startdist - enddist); + if (f > 1) + f = 1; // check if this will reduce the collision time range if (leavefrac > f) { @@ -785,42 +968,61 @@ void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const // at this point we know the trace overlaps the brush because it was not // rejected at any point in the loop above - // see if this brush can block the trace or not according to contents - if (trace->hitsupercontentsmask & thatbrush_start->supercontents) + // see if the trace started outside the brush or not + if (enterfrac > -1) { - if (enterfrac == -1) + // started outside, and overlaps, therefore there is a collision here + // store out the impact information + if (trace->hitsupercontentsmask & other_start->supercontents) { - trace->startsupercontents |= thatbrush_start->supercontents; - trace->startsolid = true; - if (leavefrac < 1) - trace->allsolid = true; + trace->hitsupercontents = other_start->supercontents; + trace->hitq3surfaceflags = hitq3surfaceflags; + trace->hittexture = hittexture; + trace->realfraction = bound(0, enterfrac, 1); + trace->fraction = bound(0, enterfrac2, 1); + if (collision_prefernudgedfraction.integer) + trace->realfraction = trace->fraction; + VectorCopy(newimpactplane, trace->plane.normal); + trace->plane.dist = newimpactplane[3]; } - // store out the impact information - trace->hitsupercontents = thatbrush_start->supercontents; - trace->hitq3surfaceflags = hitq3surfaceflags; - trace->hittexture = hittexture; - trace->realfraction = bound(0, enterfrac, 1); - trace->fraction = bound(0, enterfrac2, 1); - if (collision_prefernudgedfraction.integer) - trace->realfraction = trace->fraction; - VectorCopy(newimpactnormal, trace->plane.normal); } else { - // this brush can not block the trace, but it can update start contents - if (enterfrac == -1) - trace->startsupercontents |= thatbrush_start->supercontents; + // started inside, update startsolid and friends + trace->startsupercontents |= other_start->supercontents; + if (trace->hitsupercontentsmask & other_start->supercontents) + { + trace->startsolid = true; + if (leavefrac < 1) + trace->allsolid = true; + VectorCopy(newimpactplane, trace->plane.normal); + trace->plane.dist = newimpactplane[3]; + if (trace->startdepth > startdepth) + { + trace->startdepth = startdepth; + VectorCopy(startdepthnormal, trace->startdepthnormal); + } + } } } -void Collision_TracePointBrushFloat(trace_t *trace, const vec3_t point, const colbrushf_t *thatbrush) +qboolean Collision_PointInsideBrushFloat(const vec3_t point, const colbrushf_t *brush) { int nplane; const colplanef_t *plane; - for (nplane = 0, plane = thatbrush->planes;nplane < thatbrush->numplanes;nplane++, plane++) + if (!BoxesOverlap(point, point, brush->mins, brush->maxs)) + return false; + for (nplane = 0, plane = brush->planes;nplane < brush->numplanes;nplane++, plane++) if (DotProduct(plane->normal, point) > plane->dist) - return; + return false; + return true; +} + +void Collision_TracePointBrushFloat(trace_t *trace, const vec3_t point, const colbrushf_t *thatbrush) +{ + if (!Collision_PointInsideBrushFloat(point, thatbrush)) + return; trace->startsupercontents |= thatbrush->supercontents; if (trace->hitsupercontentsmask & thatbrush->supercontents) @@ -830,268 +1032,224 @@ void Collision_TracePointBrushFloat(trace_t *trace, const vec3_t point, const co } } -static colpointf_t polyf_points[256]; -static colplanef_t polyf_planes[256 + 2]; -static colbrushf_t polyf_brush; - void Collision_SnapCopyPoints(int numpoints, const colpointf_t *in, colpointf_t *out, float fractionprecision, float invfractionprecision) { - while (numpoints--) - { - out->v[0] = floor(in->v[0] * fractionprecision + 0.5f) * invfractionprecision; - out->v[1] = floor(in->v[1] * fractionprecision + 0.5f) * invfractionprecision; - out->v[2] = floor(in->v[2] * fractionprecision + 0.5f) * invfractionprecision; - } -} - -void Collision_TraceBrushPolygonFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numpoints, const float *points, int supercontents) -{ - if (numpoints > 256) + int i; + for (i = 0;i < numpoints;i++) { - Con_Print("Polygon with more than 256 points not supported yet (fixme!)\n"); - return; + out[i].v[0] = floor(in[i].v[0] * fractionprecision + 0.5f) * invfractionprecision; + out[i].v[1] = floor(in[i].v[1] * fractionprecision + 0.5f) * invfractionprecision; + out[i].v[2] = floor(in[i].v[2] * fractionprecision + 0.5f) * invfractionprecision; } - polyf_brush.numpoints = numpoints; - polyf_brush.numplanes = numpoints + 2; - //polyf_brush.points = (colpointf_t *)points; - polyf_brush.planes = polyf_planes; - polyf_brush.supercontents = supercontents; - polyf_brush.points = polyf_points; - Collision_SnapCopyPoints(numpoints, (colpointf_t *)points, polyf_points, COLLISION_SNAPSCALE, COLLISION_SNAP); - Collision_CalcPlanesForPolygonBrushFloat(&polyf_brush); - //Collision_PrintBrushAsQHull(&polyf_brush, "polyf_brush"); - Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, &polyf_brush, &polyf_brush); } -void Collision_TraceBrushTriangleMeshFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numtriangles, const int *element3i, const float *vertex3f, int supercontents, int q3surfaceflags, texture_t *texture, const vec3_t segmentmins, const vec3_t segmentmaxs) +void Collision_TraceBrushTriangleMeshFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numtriangles, const int *element3i, const float *vertex3f, int stride, float *bbox6f, int supercontents, int q3surfaceflags, const texture_t *texture, const vec3_t segmentmins, const vec3_t segmentmaxs) { int i; - float facemins[3], facemaxs[3]; - polyf_brush.numpoints = 3; - polyf_brush.numplanes = 5; - polyf_brush.points = polyf_points; - polyf_brush.planes = polyf_planes; - polyf_brush.supercontents = supercontents; - for (i = 0;i < polyf_brush.numplanes;i++) + colpointf_t points[3]; + colpointf_t edgedirs[3]; + colplanef_t planes[5]; + colbrushf_t brush; + memset(&brush, 0, sizeof(brush)); + brush.isaabb = false; + brush.hasaabbplanes = false; + brush.numpoints = 3; + brush.numedgedirs = 3; + brush.numplanes = 5; + brush.points = points; + brush.edgedirs = edgedirs; + brush.planes = planes; + brush.supercontents = supercontents; + brush.q3surfaceflags = q3surfaceflags; + brush.texture = texture; + for (i = 0;i < brush.numplanes;i++) { - polyf_brush.planes[i].q3surfaceflags = q3surfaceflags; - polyf_brush.planes[i].texture = texture; + brush.planes[i].q3surfaceflags = q3surfaceflags; + brush.planes[i].texture = texture; } - for (i = 0;i < numtriangles;i++, element3i += 3) + if(stride > 0) { - VectorCopy(vertex3f + element3i[0] * 3, polyf_points[0].v); - VectorCopy(vertex3f + element3i[1] * 3, polyf_points[1].v); - VectorCopy(vertex3f + element3i[2] * 3, polyf_points[2].v); - Collision_SnapCopyPoints(3, polyf_points, polyf_points, COLLISION_SNAPSCALE, COLLISION_SNAP); - facemins[0] = min(polyf_points[0].v[0], min(polyf_points[1].v[0], polyf_points[2].v[0])); - facemins[1] = min(polyf_points[0].v[1], min(polyf_points[1].v[1], polyf_points[2].v[1])); - facemins[2] = min(polyf_points[0].v[2], min(polyf_points[1].v[2], polyf_points[2].v[2])); - facemaxs[0] = max(polyf_points[0].v[0], max(polyf_points[1].v[0], polyf_points[2].v[0])); - facemaxs[1] = max(polyf_points[0].v[1], max(polyf_points[1].v[1], polyf_points[2].v[1])); - facemaxs[2] = max(polyf_points[0].v[2], max(polyf_points[1].v[2], polyf_points[2].v[2])); - if (BoxesOverlap(segmentmins, segmentmaxs, facemins, facemaxs)) + int k, cnt, tri; + cnt = (numtriangles + stride - 1) / stride; + for(i = 0; i < cnt; ++i) { - Collision_CalcPlanesForPolygonBrushFloat(&polyf_brush); - //Collision_PrintBrushAsQHull(&polyf_brush, "polyf_brush"); - Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, &polyf_brush, &polyf_brush); + if(BoxesOverlap(bbox6f + i * 6, bbox6f + i * 6 + 3, segmentmins, segmentmaxs)) + { + for(k = 0; k < stride; ++k) + { + tri = i * stride + k; + if(tri >= numtriangles) + break; + VectorCopy(vertex3f + element3i[tri * 3 + 0] * 3, points[0].v); + VectorCopy(vertex3f + element3i[tri * 3 + 1] * 3, points[1].v); + VectorCopy(vertex3f + element3i[tri * 3 + 2] * 3, points[2].v); + Collision_SnapCopyPoints(brush.numpoints, points, points, COLLISION_SNAPSCALE, COLLISION_SNAP); + Collision_CalcEdgeDirsForPolygonBrushFloat(&brush); + Collision_CalcPlanesForPolygonBrushFloat(&brush); + //Collision_PrintBrushAsQHull(&brush, "brush"); + Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, &brush, &brush); + } + } } } -} - -void Collision_TraceLinePolygonFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, int numpoints, const float *points, int supercontents) -{ - if (numpoints > 256) + else if(stride == 0) { - Con_Print("Polygon with more than 256 points not supported yet (fixme!)\n"); - return; - } - polyf_brush.numpoints = numpoints; - polyf_brush.numplanes = numpoints + 2; - //polyf_brush.points = (colpointf_t *)points; - polyf_brush.points = polyf_points; - Collision_SnapCopyPoints(numpoints, (colpointf_t *)points, polyf_points, COLLISION_SNAPSCALE, COLLISION_SNAP); - polyf_brush.planes = polyf_planes; - polyf_brush.supercontents = supercontents; - Collision_CalcPlanesForPolygonBrushFloat(&polyf_brush); - //Collision_PrintBrushAsQHull(&polyf_brush, "polyf_brush"); - Collision_TraceLineBrushFloat(trace, linestart, lineend, &polyf_brush, &polyf_brush); -} - -void Collision_TraceLineTriangleMeshFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, int numtriangles, const int *element3i, const float *vertex3f, int supercontents, int q3surfaceflags, texture_t *texture, const vec3_t segmentmins, const vec3_t segmentmaxs) -{ - int i; -#if 1 - // FIXME: snap vertices? - for (i = 0;i < numtriangles;i++, element3i += 3) - Collision_TraceLineTriangleFloat(trace, linestart, lineend, vertex3f + element3i[0] * 3, vertex3f + element3i[1] * 3, vertex3f + element3i[2] * 3, supercontents, q3surfaceflags, texture); -#else - polyf_brush.numpoints = 3; - polyf_brush.numplanes = 5; - polyf_brush.points = polyf_points; - polyf_brush.planes = polyf_planes; - polyf_brush.supercontents = supercontents; - for (i = 0;i < polyf_brush.numplanes;i++) - { - polyf_brush.planes[i].supercontents = supercontents; - polyf_brush.planes[i].q3surfaceflags = q3surfaceflags; - polyf_brush.planes[i].texture = texture; + for (i = 0;i < numtriangles;i++, element3i += 3) + { + if (TriangleOverlapsBox(vertex3f + element3i[0]*3, vertex3f + element3i[1]*3, vertex3f + element3i[2]*3, segmentmins, segmentmaxs)) + { + VectorCopy(vertex3f + element3i[0] * 3, points[0].v); + VectorCopy(vertex3f + element3i[1] * 3, points[1].v); + VectorCopy(vertex3f + element3i[2] * 3, points[2].v); + Collision_SnapCopyPoints(brush.numpoints, points, points, COLLISION_SNAPSCALE, COLLISION_SNAP); + Collision_CalcEdgeDirsForPolygonBrushFloat(&brush); + Collision_CalcPlanesForPolygonBrushFloat(&brush); + //Collision_PrintBrushAsQHull(&brush, "brush"); + Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, &brush, &brush); + } + } } - for (i = 0;i < numtriangles;i++, element3i += 3) + else { - float facemins[3], facemaxs[3]; - VectorCopy(vertex3f + element3i[0] * 3, polyf_points[0].v); - VectorCopy(vertex3f + element3i[1] * 3, polyf_points[1].v); - VectorCopy(vertex3f + element3i[2] * 3, polyf_points[2].v); - Collision_SnapCopyPoints(numpoints, polyf_points, polyf_points, COLLISION_SNAPSCALE, COLLISION_SNAP); - facemins[0] = min(polyf_points[0].v[0], min(polyf_points[1].v[0], polyf_points[2].v[0])); - facemins[1] = min(polyf_points[0].v[1], min(polyf_points[1].v[1], polyf_points[2].v[1])); - facemins[2] = min(polyf_points[0].v[2], min(polyf_points[1].v[2], polyf_points[2].v[2])); - facemaxs[0] = max(polyf_points[0].v[0], max(polyf_points[1].v[0], polyf_points[2].v[0])); - facemaxs[1] = max(polyf_points[0].v[1], max(polyf_points[1].v[1], polyf_points[2].v[1])); - facemaxs[2] = max(polyf_points[0].v[2], max(polyf_points[1].v[2], polyf_points[2].v[2])); - if (BoxesOverlap(segmentmins, segmentmaxs, facemins, facemaxs)) + for (i = 0;i < numtriangles;i++, element3i += 3) { - Collision_CalcPlanesForPolygonBrushFloat(&polyf_brush); - //Collision_PrintBrushAsQHull(&polyf_brush, "polyf_brush"); - Collision_TraceLineBrushFloat(trace, linestart, lineend, &polyf_brush, &polyf_brush); + VectorCopy(vertex3f + element3i[0] * 3, points[0].v); + VectorCopy(vertex3f + element3i[1] * 3, points[1].v); + VectorCopy(vertex3f + element3i[2] * 3, points[2].v); + Collision_SnapCopyPoints(brush.numpoints, points, points, COLLISION_SNAPSCALE, COLLISION_SNAP); + Collision_CalcEdgeDirsForPolygonBrushFloat(&brush); + Collision_CalcPlanesForPolygonBrushFloat(&brush); + //Collision_PrintBrushAsQHull(&brush, "brush"); + Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, &brush, &brush); } } -#endif } - -static colpointf_t polyf_pointsstart[256], polyf_pointsend[256]; -static colplanef_t polyf_planesstart[256 + 2], polyf_planesend[256 + 2]; -static colbrushf_t polyf_brushstart, polyf_brushend; - -void Collision_TraceBrushPolygonTransformFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numpoints, const float *points, const matrix4x4_t *polygonmatrixstart, const matrix4x4_t *polygonmatrixend, int supercontents, int q3surfaceflags, texture_t *texture) +void Collision_TraceLineTriangleMeshFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, int numtriangles, const int *element3i, const float *vertex3f, int stride, float *bbox6f, int supercontents, int q3surfaceflags, const texture_t *texture, const vec3_t segmentmins, const vec3_t segmentmaxs) { int i; - if (numpoints > 256) + // FIXME: snap vertices? + if(stride > 0) { - Con_Print("Polygon with more than 256 points not supported yet (fixme!)\n"); - return; + int k, cnt, tri; + cnt = (numtriangles + stride - 1) / stride; + for(i = 0; i < cnt; ++i) + { + if(BoxesOverlap(bbox6f + i * 6, bbox6f + i * 6 + 3, segmentmins, segmentmaxs)) + { + for(k = 0; k < stride; ++k) + { + tri = i * stride + k; + if(tri >= numtriangles) + break; + Collision_TraceLineTriangleFloat(trace, linestart, lineend, vertex3f + element3i[tri * 3 + 0] * 3, vertex3f + element3i[tri * 3 + 1] * 3, vertex3f + element3i[tri * 3 + 2] * 3, supercontents, q3surfaceflags, texture); + } + } + } } - polyf_brushstart.numpoints = numpoints; - polyf_brushstart.numplanes = numpoints + 2; - polyf_brushstart.points = polyf_pointsstart;//(colpointf_t *)points; - polyf_brushstart.planes = polyf_planesstart; - polyf_brushstart.supercontents = supercontents; - for (i = 0;i < numpoints;i++) - Matrix4x4_Transform(polygonmatrixstart, points + i * 3, polyf_brushstart.points[i].v); - polyf_brushend.numpoints = numpoints; - polyf_brushend.numplanes = numpoints + 2; - polyf_brushend.points = polyf_pointsend;//(colpointf_t *)points; - polyf_brushend.planes = polyf_planesend; - polyf_brushend.supercontents = supercontents; - for (i = 0;i < numpoints;i++) - Matrix4x4_Transform(polygonmatrixend, points + i * 3, polyf_brushend.points[i].v); - for (i = 0;i < polyf_brushstart.numplanes;i++) + else { - polyf_brushstart.planes[i].q3surfaceflags = q3surfaceflags; - polyf_brushstart.planes[i].texture = texture; + for (i = 0;i < numtriangles;i++, element3i += 3) + Collision_TraceLineTriangleFloat(trace, linestart, lineend, vertex3f + element3i[0] * 3, vertex3f + element3i[1] * 3, vertex3f + element3i[2] * 3, supercontents, q3surfaceflags, texture); } - Collision_SnapCopyPoints(numpoints, polyf_pointsstart, polyf_pointsstart, COLLISION_SNAPSCALE, COLLISION_SNAP); - Collision_SnapCopyPoints(numpoints, polyf_pointsend, polyf_pointsend, COLLISION_SNAPSCALE, COLLISION_SNAP); - Collision_CalcPlanesForPolygonBrushFloat(&polyf_brushstart); - Collision_CalcPlanesForPolygonBrushFloat(&polyf_brushend); - - //Collision_PrintBrushAsQHull(&polyf_brushstart, "polyf_brushstart"); - //Collision_PrintBrushAsQHull(&polyf_brushend, "polyf_brushend"); - - Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, &polyf_brushstart, &polyf_brushend); } - - -#define MAX_BRUSHFORBOX 16 -static int brushforbox_index = 0; -static colpointf_t brushforbox_point[MAX_BRUSHFORBOX*8]; -static colplanef_t brushforbox_plane[MAX_BRUSHFORBOX*6]; -static colbrushf_t brushforbox_brush[MAX_BRUSHFORBOX]; -static colbrushf_t brushforpoint_brush[MAX_BRUSHFORBOX]; - -void Collision_InitBrushForBox(void) +void Collision_TraceBrushTriangleFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, const float *v0, const float *v1, const float *v2, int supercontents, int q3surfaceflags, const texture_t *texture) { int i; - for (i = 0;i < MAX_BRUSHFORBOX;i++) + colpointf_t points[3]; + colpointf_t edgedirs[3]; + colplanef_t planes[5]; + colbrushf_t brush; + memset(&brush, 0, sizeof(brush)); + brush.isaabb = false; + brush.hasaabbplanes = false; + brush.numpoints = 3; + brush.numedgedirs = 3; + brush.numplanes = 5; + brush.points = points; + brush.edgedirs = edgedirs; + brush.planes = planes; + brush.supercontents = supercontents; + brush.q3surfaceflags = q3surfaceflags; + brush.texture = texture; + for (i = 0;i < brush.numplanes;i++) { - brushforbox_brush[i].numpoints = 8; - brushforbox_brush[i].numplanes = 6; - brushforbox_brush[i].points = brushforbox_point + i * 8; - brushforbox_brush[i].planes = brushforbox_plane + i * 6; - brushforpoint_brush[i].numpoints = 1; - brushforpoint_brush[i].numplanes = 0; - brushforpoint_brush[i].points = brushforbox_point + i * 8; - brushforpoint_brush[i].planes = brushforbox_plane + i * 6; + brush.planes[i].q3surfaceflags = q3surfaceflags; + brush.planes[i].texture = texture; } + VectorCopy(v0, points[0].v); + VectorCopy(v1, points[1].v); + VectorCopy(v2, points[2].v); + Collision_SnapCopyPoints(brush.numpoints, points, points, COLLISION_SNAPSCALE, COLLISION_SNAP); + Collision_CalcEdgeDirsForPolygonBrushFloat(&brush); + Collision_CalcPlanesForPolygonBrushFloat(&brush); + //Collision_PrintBrushAsQHull(&brush, "brush"); + Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, &brush, &brush); } -colbrushf_t *Collision_BrushForBox(const matrix4x4_t *matrix, const vec3_t mins, const vec3_t maxs, int supercontents, int q3surfaceflags, texture_t *texture) +void Collision_BrushForBox(colboxbrushf_t *boxbrush, const vec3_t mins, const vec3_t maxs, int supercontents, int q3surfaceflags, const texture_t *texture) { - int i, j; - vec3_t v; - colbrushf_t *brush; - if (brushforbox_brush[0].numpoints == 0) - Collision_InitBrushForBox(); - // FIXME: these probably don't actually need to be normalized if the collision code does not care + int i; + memset(boxbrush, 0, sizeof(*boxbrush)); + boxbrush->brush.isaabb = true; + boxbrush->brush.hasaabbplanes = true; + boxbrush->brush.points = boxbrush->points; + boxbrush->brush.edgedirs = boxbrush->edgedirs; + boxbrush->brush.planes = boxbrush->planes; + boxbrush->brush.supercontents = supercontents; + boxbrush->brush.q3surfaceflags = q3surfaceflags; + boxbrush->brush.texture = texture; if (VectorCompare(mins, maxs)) { // point brush - brush = brushforpoint_brush + ((brushforbox_index++) % MAX_BRUSHFORBOX); - VectorCopy(mins, brush->points->v); + boxbrush->brush.numpoints = 1; + boxbrush->brush.numedgedirs = 0; + boxbrush->brush.numplanes = 0; + VectorCopy(mins, boxbrush->brush.points[0].v); } else { - brush = brushforbox_brush + ((brushforbox_index++) % MAX_BRUSHFORBOX); - // FIXME: optimize - for (i = 0;i < 8;i++) - { - v[0] = i & 1 ? maxs[0] : mins[0]; - v[1] = i & 2 ? maxs[1] : mins[1]; - v[2] = i & 4 ? maxs[2] : mins[2]; - Matrix4x4_Transform(matrix, v, brush->points[i].v); - } - // FIXME: optimize! + boxbrush->brush.numpoints = 8; + boxbrush->brush.numedgedirs = 3; + boxbrush->brush.numplanes = 6; + // there are 8 points on a box + // there are 3 edgedirs on a box (both signs are tested in collision) + // there are 6 planes on a box + VectorSet(boxbrush->brush.points[0].v, mins[0], mins[1], mins[2]); + VectorSet(boxbrush->brush.points[1].v, maxs[0], mins[1], mins[2]); + VectorSet(boxbrush->brush.points[2].v, mins[0], maxs[1], mins[2]); + VectorSet(boxbrush->brush.points[3].v, maxs[0], maxs[1], mins[2]); + VectorSet(boxbrush->brush.points[4].v, mins[0], mins[1], maxs[2]); + VectorSet(boxbrush->brush.points[5].v, maxs[0], mins[1], maxs[2]); + VectorSet(boxbrush->brush.points[6].v, mins[0], maxs[1], maxs[2]); + VectorSet(boxbrush->brush.points[7].v, maxs[0], maxs[1], maxs[2]); + VectorSet(boxbrush->brush.edgedirs[0].v, 1, 0, 0); + VectorSet(boxbrush->brush.edgedirs[1].v, 0, 1, 0); + VectorSet(boxbrush->brush.edgedirs[2].v, 0, 0, 1); + VectorSet(boxbrush->brush.planes[0].normal, -1, 0, 0);boxbrush->brush.planes[0].dist = -mins[0]; + VectorSet(boxbrush->brush.planes[1].normal, 1, 0, 0);boxbrush->brush.planes[1].dist = maxs[0]; + VectorSet(boxbrush->brush.planes[2].normal, 0, -1, 0);boxbrush->brush.planes[2].dist = -mins[1]; + VectorSet(boxbrush->brush.planes[3].normal, 0, 1, 0);boxbrush->brush.planes[3].dist = maxs[1]; + VectorSet(boxbrush->brush.planes[4].normal, 0, 0, -1);boxbrush->brush.planes[4].dist = -mins[2]; + VectorSet(boxbrush->brush.planes[5].normal, 0, 0, 1);boxbrush->brush.planes[5].dist = maxs[2]; for (i = 0;i < 6;i++) { - VectorClear(v); - v[i >> 1] = i & 1 ? 1 : -1; - Matrix4x4_Transform3x3(matrix, v, brush->planes[i].normal); - VectorNormalize(brush->planes[i].normal); + boxbrush->brush.planes[i].q3surfaceflags = q3surfaceflags; + boxbrush->brush.planes[i].texture = texture; } } - brush->supercontents = supercontents; - for (j = 0;j < brush->numplanes;j++) - { - brush->planes[j].q3surfaceflags = q3surfaceflags; - brush->planes[j].texture = texture; - brush->planes[j].dist = furthestplanedist_float(brush->planes[j].normal, brush->points, brush->numpoints); - } - VectorCopy(brush->points[0].v, brush->mins); - VectorCopy(brush->points[0].v, brush->maxs); - for (j = 1;j < brush->numpoints;j++) - { - brush->mins[0] = min(brush->mins[0], brush->points[j].v[0]); - brush->mins[1] = min(brush->mins[1], brush->points[j].v[1]); - brush->mins[2] = min(brush->mins[2], brush->points[j].v[2]); - brush->maxs[0] = max(brush->maxs[0], brush->points[j].v[0]); - brush->maxs[1] = max(brush->maxs[1], brush->points[j].v[1]); - brush->maxs[2] = max(brush->maxs[2], brush->points[j].v[2]); - } - brush->mins[0] -= 1; - brush->mins[1] -= 1; - brush->mins[2] -= 1; - brush->maxs[0] += 1; - brush->maxs[1] += 1; - brush->maxs[2] += 1; - Collision_ValidateBrush(brush); - return brush; + boxbrush->brush.supercontents = supercontents; + boxbrush->brush.q3surfaceflags = q3surfaceflags; + boxbrush->brush.texture = texture; + VectorSet(boxbrush->brush.mins, mins[0] - 1, mins[1] - 1, mins[2] - 1); + VectorSet(boxbrush->brush.maxs, maxs[0] + 1, maxs[1] + 1, maxs[2] + 1); + //Collision_ValidateBrush(&boxbrush->brush); } void Collision_ClipTrace_BrushBox(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int supercontents, int q3surfaceflags, texture_t *texture) { - colbrushf_t *boxbrush, *thisbrush_start, *thisbrush_end; + colboxbrushf_t boxbrush, thisbrush_start, thisbrush_end; vec3_t startmins, startmaxs, endmins, endmaxs; // create brushes for the collision @@ -1099,16 +1257,16 @@ void Collision_ClipTrace_BrushBox(trace_t *trace, const vec3_t cmins, const vec3 VectorAdd(start, maxs, startmaxs); VectorAdd(end, mins, endmins); VectorAdd(end, maxs, endmaxs); - boxbrush = Collision_BrushForBox(&identitymatrix, cmins, cmaxs, supercontents, q3surfaceflags, texture); - thisbrush_start = Collision_BrushForBox(&identitymatrix, startmins, startmaxs, 0, 0, NULL); - thisbrush_end = Collision_BrushForBox(&identitymatrix, endmins, endmaxs, 0, 0, NULL); + Collision_BrushForBox(&boxbrush, cmins, cmaxs, supercontents, q3surfaceflags, texture); + Collision_BrushForBox(&thisbrush_start, startmins, startmaxs, 0, 0, NULL); + Collision_BrushForBox(&thisbrush_end, endmins, endmaxs, 0, 0, NULL); memset(trace, 0, sizeof(trace_t)); trace->hitsupercontentsmask = hitsupercontentsmask; trace->fraction = 1; trace->realfraction = 1; trace->allsolid = true; - Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, boxbrush, boxbrush); + Collision_TraceBrushBrushFloat(trace, &thisbrush_start.brush, &thisbrush_end.brush, &boxbrush.brush, &boxbrush.brush); } //pseudocode for detecting line/sphere overlap without calculating an impact point @@ -1148,7 +1306,7 @@ float Collision_ClipTrace_Line_Sphere(double *linestart, double *lineend, double if (deviationdist > sphereradius*sphereradius) return 1; // miss (off to the side) // nudge back to find the correct impact distance - impactdist += deviationdist - sphereradius; + impactdist -= sphereradius - deviationdist/sphereradius; if (impactdist >= linelength) return 1; // miss (not close enough) if (impactdist < 0) @@ -1163,7 +1321,7 @@ float Collision_ClipTrace_Line_Sphere(double *linestart, double *lineend, double return impactdist / linelength; } -void Collision_TraceLineTriangleFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, const float *point0, const float *point1, const float *point2, int supercontents, int q3surfaceflags, texture_t *texture) +void Collision_TraceLineTriangleFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, const float *point0, const float *point1, const float *point2, int supercontents, int q3surfaceflags, const texture_t *texture) { #if 1 // more optimized @@ -1455,3 +1613,508 @@ void Collision_BoundingBoxOfBrushTraceSegment(const colbrushf_t *start, const co maxs[2] += 1; } +//=========================================== + +void Collision_TranslateBrush(const vec3_t shift, colbrushf_t *brush) +{ + int i; + // now we can transform the data + for(i = 0; i < brush->numplanes; ++i) + { + brush->planes[i].dist += DotProduct(shift, brush->planes[i].normal); + } + for(i = 0; i < brush->numpoints; ++i) + { + VectorAdd(brush->points[i].v, shift, brush->points[i].v); + } + VectorAdd(brush->mins, shift, brush->mins); + VectorAdd(brush->maxs, shift, brush->maxs); +} + +void Collision_TransformBrush(const matrix4x4_t *matrix, colbrushf_t *brush) +{ + int i; + vec3_t v; + // we're breaking any AABB properties here... + brush->isaabb = false; + brush->hasaabbplanes = false; + // now we can transform the data + for(i = 0; i < brush->numplanes; ++i) + { + Matrix4x4_TransformPositivePlane(matrix, brush->planes[i].normal[0], brush->planes[i].normal[1], brush->planes[i].normal[2], brush->planes[i].dist, brush->planes[i].normal); + } + for(i = 0; i < brush->numedgedirs; ++i) + { + Matrix4x4_Transform(matrix, brush->edgedirs[i].v, v); + VectorCopy(v, brush->edgedirs[i].v); + } + for(i = 0; i < brush->numpoints; ++i) + { + Matrix4x4_Transform(matrix, brush->points[i].v, v); + VectorCopy(v, brush->points[i].v); + } + VectorCopy(brush->points[0].v, brush->mins); + VectorCopy(brush->points[0].v, brush->maxs); + for(i = 1; i < brush->numpoints; ++i) + { + if(brush->points[i].v[0] < brush->mins[0]) brush->mins[0] = brush->points[i].v[0]; + if(brush->points[i].v[1] < brush->mins[1]) brush->mins[1] = brush->points[i].v[1]; + if(brush->points[i].v[2] < brush->mins[2]) brush->mins[2] = brush->points[i].v[2]; + if(brush->points[i].v[0] > brush->maxs[0]) brush->maxs[0] = brush->points[i].v[0]; + if(brush->points[i].v[1] > brush->maxs[1]) brush->maxs[1] = brush->points[i].v[1]; + if(brush->points[i].v[2] > brush->maxs[2]) brush->maxs[2] = brush->points[i].v[2]; + } +} + +typedef struct collision_cachedtrace_parameters_s +{ + dp_model_t *model; + vec3_t end; + vec3_t start; + int hitsupercontentsmask; + matrix4x4_t matrix; +} +collision_cachedtrace_parameters_t; + +typedef struct collision_cachedtrace_s +{ + qboolean valid; + collision_cachedtrace_parameters_t p; + trace_t result; +} +collision_cachedtrace_t; + +static mempool_t *collision_cachedtrace_mempool; +static collision_cachedtrace_t *collision_cachedtrace_array; +static int collision_cachedtrace_firstfree; +static int collision_cachedtrace_lastused; +static int collision_cachedtrace_max; +static int collision_cachedtrace_sequence; +static int collision_cachedtrace_hashsize; +static int *collision_cachedtrace_hash; +static unsigned int *collision_cachedtrace_arrayfullhashindex; +static unsigned int *collision_cachedtrace_arrayhashindex; +static unsigned int *collision_cachedtrace_arraynext; +static unsigned char *collision_cachedtrace_arrayused; +static qboolean collision_cachedtrace_rebuildhash; + +void Collision_Cache_Reset(qboolean resetlimits) +{ + if (collision_cachedtrace_hash) + Mem_Free(collision_cachedtrace_hash); + if (collision_cachedtrace_array) + Mem_Free(collision_cachedtrace_array); + if (collision_cachedtrace_arrayfullhashindex) + Mem_Free(collision_cachedtrace_arrayfullhashindex); + if (collision_cachedtrace_arrayhashindex) + Mem_Free(collision_cachedtrace_arrayhashindex); + if (collision_cachedtrace_arraynext) + Mem_Free(collision_cachedtrace_arraynext); + if (collision_cachedtrace_arrayused) + Mem_Free(collision_cachedtrace_arrayused); + if (resetlimits || !collision_cachedtrace_max) + collision_cachedtrace_max = collision_cache.integer ? 128 : 1; + collision_cachedtrace_firstfree = 1; + collision_cachedtrace_lastused = 0; + collision_cachedtrace_hashsize = collision_cachedtrace_max; + collision_cachedtrace_array = (collision_cachedtrace_t *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_max * sizeof(collision_cachedtrace_t)); + collision_cachedtrace_hash = (int *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_hashsize * sizeof(int)); + collision_cachedtrace_arrayfullhashindex = (unsigned int *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_max * sizeof(unsigned int)); + collision_cachedtrace_arrayhashindex = (unsigned int *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_max * sizeof(unsigned int)); + collision_cachedtrace_arraynext = (unsigned int *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_max * sizeof(unsigned int)); + collision_cachedtrace_arrayused = (unsigned char *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_max * sizeof(unsigned char)); + collision_cachedtrace_sequence = 1; + collision_cachedtrace_rebuildhash = false; +} + +void Collision_Cache_Init(mempool_t *mempool) +{ + collision_cachedtrace_mempool = mempool; + Collision_Cache_Reset(true); +} + +void Collision_Cache_RebuildHash(void) +{ + int index; + int range = collision_cachedtrace_lastused + 1; + int sequence = collision_cachedtrace_sequence; + int firstfree = collision_cachedtrace_max; + int lastused = 0; + int *hash = collision_cachedtrace_hash; + unsigned int hashindex; + unsigned int *arrayhashindex = collision_cachedtrace_arrayhashindex; + unsigned int *arraynext = collision_cachedtrace_arraynext; + collision_cachedtrace_rebuildhash = false; + memset(collision_cachedtrace_hash, 0, collision_cachedtrace_hashsize * sizeof(int)); + for (index = 1;index < range;index++) + { + if (collision_cachedtrace_arrayused[index] == sequence) + { + hashindex = arrayhashindex[index]; + arraynext[index] = hash[hashindex]; + hash[hashindex] = index; + lastused = index; + } + else + { + if (firstfree > index) + firstfree = index; + collision_cachedtrace_arrayused[index] = 0; + } + } + collision_cachedtrace_firstfree = firstfree; + collision_cachedtrace_lastused = lastused; +} + +void Collision_Cache_NewFrame(void) +{ + if (collision_cache.integer) + { + if (collision_cachedtrace_max < 128) + Collision_Cache_Reset(true); + } + else + { + if (collision_cachedtrace_max > 1) + Collision_Cache_Reset(true); + } + // rebuild hash if sequence would overflow byte, otherwise increment + if (collision_cachedtrace_sequence == 255) + { + Collision_Cache_RebuildHash(); + collision_cachedtrace_sequence = 1; + } + else + { + collision_cachedtrace_rebuildhash = true; + collision_cachedtrace_sequence++; + } +} + +static unsigned int Collision_Cache_HashIndexForArray(unsigned int *array, unsigned int size) +{ + unsigned int i; + unsigned int hashindex = 0; + // this is a super-cheesy checksum, designed only for speed + for (i = 0;i < size;i++) + hashindex += array[i] * (1 + i); + return hashindex; +} + +static collision_cachedtrace_t *Collision_Cache_Lookup(dp_model_t *model, const matrix4x4_t *matrix, const matrix4x4_t *inversematrix, const vec3_t start, const vec3_t end, int hitsupercontentsmask) +{ + int hashindex = 0; + unsigned int fullhashindex; + int index = 0; + int range; + int sequence = collision_cachedtrace_sequence; + int *hash = collision_cachedtrace_hash; + unsigned int *arrayfullhashindex = collision_cachedtrace_arrayfullhashindex; + unsigned int *arraynext = collision_cachedtrace_arraynext; + collision_cachedtrace_t *cached = collision_cachedtrace_array + index; + collision_cachedtrace_parameters_t params; + // all non-cached traces use the same index + if (!collision_cache.integer) + r_refdef.stats.collisioncache_traced++; + else + { + // cached trace lookup + memset(¶ms, 0, sizeof(params)); + params.model = model; + VectorCopy(start, params.start); + VectorCopy(end, params.end); + params.hitsupercontentsmask = hitsupercontentsmask; + params.matrix = *matrix; + fullhashindex = Collision_Cache_HashIndexForArray((unsigned int *)¶ms, sizeof(params) / sizeof(unsigned int)); + hashindex = (int)(fullhashindex % (unsigned int)collision_cachedtrace_hashsize); + for (index = hash[hashindex];index;index = arraynext[index]) + { + if (arrayfullhashindex[index] != fullhashindex) + continue; + cached = collision_cachedtrace_array + index; + //if (memcmp(&cached->p, ¶ms, sizeof(params))) + if (cached->p.model != params.model + || cached->p.end[0] != params.end[0] + || cached->p.end[1] != params.end[1] + || cached->p.end[2] != params.end[2] + || cached->p.start[0] != params.start[0] + || cached->p.start[1] != params.start[1] + || cached->p.start[2] != params.start[2] + || cached->p.hitsupercontentsmask != params.hitsupercontentsmask + || cached->p.matrix.m[0][0] != params.matrix.m[0][0] + || cached->p.matrix.m[0][1] != params.matrix.m[0][1] + || cached->p.matrix.m[0][2] != params.matrix.m[0][2] + || cached->p.matrix.m[0][3] != params.matrix.m[0][3] + || cached->p.matrix.m[1][0] != params.matrix.m[1][0] + || cached->p.matrix.m[1][1] != params.matrix.m[1][1] + || cached->p.matrix.m[1][2] != params.matrix.m[1][2] + || cached->p.matrix.m[1][3] != params.matrix.m[1][3] + || cached->p.matrix.m[2][0] != params.matrix.m[2][0] + || cached->p.matrix.m[2][1] != params.matrix.m[2][1] + || cached->p.matrix.m[2][2] != params.matrix.m[2][2] + || cached->p.matrix.m[2][3] != params.matrix.m[2][3] + || cached->p.matrix.m[3][0] != params.matrix.m[3][0] + || cached->p.matrix.m[3][1] != params.matrix.m[3][1] + || cached->p.matrix.m[3][2] != params.matrix.m[3][2] + || cached->p.matrix.m[3][3] != params.matrix.m[3][3] + ) + continue; + // found a matching trace in the cache + r_refdef.stats.collisioncache_cached++; + cached->valid = true; + collision_cachedtrace_arrayused[index] = collision_cachedtrace_sequence; + return cached; + } + r_refdef.stats.collisioncache_traced++; + // find an unused cache entry + for (index = collision_cachedtrace_firstfree, range = collision_cachedtrace_max;index < range;index++) + if (collision_cachedtrace_arrayused[index] == 0) + break; + if (index == range) + { + // all claimed, but probably some are stale... + for (index = 1, range = collision_cachedtrace_max;index < range;index++) + if (collision_cachedtrace_arrayused[index] != sequence) + break; + if (index < range) + { + // found a stale one, rebuild the hash + Collision_Cache_RebuildHash(); + } + else + { + // we need to grow the cache + collision_cachedtrace_max *= 2; + Collision_Cache_Reset(false); + index = 1; + } + } + // link the new cache entry into the hash bucket + collision_cachedtrace_firstfree = index + 1; + if (collision_cachedtrace_lastused < index) + collision_cachedtrace_lastused = index; + cached = collision_cachedtrace_array + index; + collision_cachedtrace_arraynext[index] = collision_cachedtrace_hash[hashindex]; + collision_cachedtrace_hash[hashindex] = index; + collision_cachedtrace_arrayhashindex[index] = hashindex; + cached->valid = false; + cached->p = params; + collision_cachedtrace_arrayfullhashindex[index] = fullhashindex; + collision_cachedtrace_arrayused[index] = collision_cachedtrace_sequence; + } + return cached; +} + +void Collision_Cache_ClipLineToGenericEntitySurfaces(trace_t *trace, dp_model_t *model, matrix4x4_t *matrix, matrix4x4_t *inversematrix, const vec3_t start, const vec3_t end, int hitsupercontentsmask) +{ + collision_cachedtrace_t *cached = Collision_Cache_Lookup(model, matrix, inversematrix, start, end, hitsupercontentsmask); + if (cached->valid) + { + *trace = cached->result; + return; + } + + Collision_ClipLineToGenericEntity(trace, model, NULL, NULL, vec3_origin, vec3_origin, 0, matrix, inversematrix, start, end, hitsupercontentsmask, true); + + cached->result = *trace; +} + +void Collision_Cache_ClipLineToWorldSurfaces(trace_t *trace, dp_model_t *model, const vec3_t start, const vec3_t end, int hitsupercontents) +{ + collision_cachedtrace_t *cached = Collision_Cache_Lookup(model, &identitymatrix, &identitymatrix, start, end, hitsupercontents); + if (cached->valid) + { + *trace = cached->result; + return; + } + + Collision_ClipLineToWorld(trace, model, start, end, hitsupercontents, true); + + cached->result = *trace; +} + +void Collision_ClipToGenericEntity(trace_t *trace, dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, const vec3_t bodymins, const vec3_t bodymaxs, int bodysupercontents, matrix4x4_t *matrix, matrix4x4_t *inversematrix, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask) +{ + float starttransformed[3], endtransformed[3]; + + memset(trace, 0, sizeof(*trace)); + trace->fraction = trace->realfraction = 1; + + Matrix4x4_Transform(inversematrix, start, starttransformed); + Matrix4x4_Transform(inversematrix, end, endtransformed); +#if COLLISIONPARANOID >= 3 + Con_Printf("trans(%f %f %f -> %f %f %f, %f %f %f -> %f %f %f)", start[0], start[1], start[2], starttransformed[0], starttransformed[1], starttransformed[2], end[0], end[1], end[2], endtransformed[0], endtransformed[1], endtransformed[2]); +#endif + + if (model && model->TraceBox) + { + if(model->TraceBrush && (inversematrix->m[0][1] || inversematrix->m[0][2] || inversematrix->m[1][0] || inversematrix->m[1][2] || inversematrix->m[2][0] || inversematrix->m[2][1])) + { + // we get here if TraceBrush exists, AND we have a rotation component (SOLID_BSP case) + // using starttransformed, endtransformed is WRONG in this case! + // should rather build a brush and trace using it + colboxbrushf_t thisbrush_start, thisbrush_end; + Collision_BrushForBox(&thisbrush_start, mins, maxs, 0, 0, NULL); + Collision_BrushForBox(&thisbrush_end, mins, maxs, 0, 0, NULL); + Collision_TranslateBrush(start, &thisbrush_start.brush); + Collision_TranslateBrush(end, &thisbrush_end.brush); + Collision_TransformBrush(inversematrix, &thisbrush_start.brush); + Collision_TransformBrush(inversematrix, &thisbrush_end.brush); + //Collision_TranslateBrush(starttransformed, &thisbrush_start.brush); + //Collision_TranslateBrush(endtransformed, &thisbrush_end.brush); + model->TraceBrush(model, frameblend, skeleton, trace, &thisbrush_start.brush, &thisbrush_end.brush, hitsupercontentsmask); + } + else // this is only approximate if rotated, quite useless + model->TraceBox(model, frameblend, skeleton, trace, starttransformed, mins, maxs, endtransformed, hitsupercontentsmask); + } + else // and this requires that the transformation matrix doesn't have angles components, like SV_TraceBox ensures; FIXME may get called if a model is SOLID_BSP but has no TraceBox function + Collision_ClipTrace_Box(trace, bodymins, bodymaxs, starttransformed, mins, maxs, endtransformed, hitsupercontentsmask, bodysupercontents, 0, NULL); + trace->fraction = bound(0, trace->fraction, 1); + trace->realfraction = bound(0, trace->realfraction, 1); + + VectorLerp(start, trace->fraction, end, trace->endpos); + // transform plane + // NOTE: this relies on plane.dist being directly after plane.normal + Matrix4x4_TransformPositivePlane(matrix, trace->plane.normal[0], trace->plane.normal[1], trace->plane.normal[2], trace->plane.dist, trace->plane.normal); +} + +void Collision_ClipToWorld(trace_t *trace, dp_model_t *model, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontents) +{ + memset(trace, 0, sizeof(*trace)); + trace->fraction = trace->realfraction = 1; + // ->TraceBox: TraceBrush not needed here, as worldmodel is never rotated + if (model && model->TraceBox) + model->TraceBox(model, NULL, NULL, trace, start, mins, maxs, end, hitsupercontents); + trace->fraction = bound(0, trace->fraction, 1); + trace->realfraction = bound(0, trace->realfraction, 1); + VectorLerp(start, trace->fraction, end, trace->endpos); +} + +void Collision_ClipLineToGenericEntity(trace_t *trace, dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, const vec3_t bodymins, const vec3_t bodymaxs, int bodysupercontents, matrix4x4_t *matrix, matrix4x4_t *inversematrix, const vec3_t start, const vec3_t end, int hitsupercontentsmask, qboolean hitsurfaces) +{ + float starttransformed[3], endtransformed[3]; + memset(trace, 0, sizeof(*trace)); + trace->fraction = trace->realfraction = 1; + + Matrix4x4_Transform(inversematrix, start, starttransformed); + Matrix4x4_Transform(inversematrix, end, endtransformed); +#if COLLISIONPARANOID >= 3 + Con_Printf("trans(%f %f %f -> %f %f %f, %f %f %f -> %f %f %f)", start[0], start[1], start[2], starttransformed[0], starttransformed[1], starttransformed[2], end[0], end[1], end[2], endtransformed[0], endtransformed[1], endtransformed[2]); +#endif + + if (model && model->TraceLineAgainstSurfaces && hitsurfaces) + model->TraceLineAgainstSurfaces(model, frameblend, skeleton, trace, starttransformed, endtransformed, hitsupercontentsmask); + else if (model && model->TraceLine) + model->TraceLine(model, frameblend, skeleton, trace, starttransformed, endtransformed, hitsupercontentsmask); + else + Collision_ClipTrace_Box(trace, bodymins, bodymaxs, starttransformed, vec3_origin, vec3_origin, endtransformed, hitsupercontentsmask, bodysupercontents, 0, NULL); + trace->fraction = bound(0, trace->fraction, 1); + trace->realfraction = bound(0, trace->realfraction, 1); + + VectorLerp(start, trace->fraction, end, trace->endpos); + // transform plane + // NOTE: this relies on plane.dist being directly after plane.normal + Matrix4x4_TransformPositivePlane(matrix, trace->plane.normal[0], trace->plane.normal[1], trace->plane.normal[2], trace->plane.dist, trace->plane.normal); +} + +void Collision_ClipLineToWorld(trace_t *trace, dp_model_t *model, const vec3_t start, const vec3_t end, int hitsupercontents, qboolean hitsurfaces) +{ + memset(trace, 0, sizeof(*trace)); + trace->fraction = trace->realfraction = 1; + if (model && model->TraceLineAgainstSurfaces && hitsurfaces) + model->TraceLineAgainstSurfaces(model, NULL, NULL, trace, start, end, hitsupercontents); + else if (model && model->TraceLine) + model->TraceLine(model, NULL, NULL, trace, start, end, hitsupercontents); + trace->fraction = bound(0, trace->fraction, 1); + trace->realfraction = bound(0, trace->realfraction, 1); + VectorLerp(start, trace->fraction, end, trace->endpos); +} + +void Collision_ClipPointToGenericEntity(trace_t *trace, dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, const vec3_t bodymins, const vec3_t bodymaxs, int bodysupercontents, matrix4x4_t *matrix, matrix4x4_t *inversematrix, const vec3_t start, int hitsupercontentsmask) +{ + float starttransformed[3]; + memset(trace, 0, sizeof(*trace)); + trace->fraction = trace->realfraction = 1; + + Matrix4x4_Transform(inversematrix, start, starttransformed); +#if COLLISIONPARANOID >= 3 + Con_Printf("trans(%f %f %f -> %f %f %f)", start[0], start[1], start[2], starttransformed[0], starttransformed[1], starttransformed[2]); +#endif + + if (model && model->TracePoint) + model->TracePoint(model, NULL, NULL, trace, starttransformed, hitsupercontentsmask); + else + Collision_ClipTrace_Point(trace, bodymins, bodymaxs, starttransformed, hitsupercontentsmask, bodysupercontents, 0, NULL); + + VectorCopy(start, trace->endpos); + // transform plane + // NOTE: this relies on plane.dist being directly after plane.normal + Matrix4x4_TransformPositivePlane(matrix, trace->plane.normal[0], trace->plane.normal[1], trace->plane.normal[2], trace->plane.dist, trace->plane.normal); +} + +void Collision_ClipPointToWorld(trace_t *trace, dp_model_t *model, const vec3_t start, int hitsupercontents) +{ + memset(trace, 0, sizeof(*trace)); + trace->fraction = trace->realfraction = 1; + if (model && model->TracePoint) + model->TracePoint(model, NULL, NULL, trace, start, hitsupercontents); + VectorCopy(start, trace->endpos); +} + +void Collision_CombineTraces(trace_t *cliptrace, const trace_t *trace, void *touch, qboolean isbmodel) +{ + // take the 'best' answers from the new trace and combine with existing data + if (trace->allsolid) + cliptrace->allsolid = true; + if (trace->startsolid) + { + if (isbmodel) + cliptrace->bmodelstartsolid = true; + cliptrace->startsolid = true; + if (cliptrace->realfraction == 1) + cliptrace->ent = touch; + if (cliptrace->startdepth > trace->startdepth) + { + cliptrace->startdepth = trace->startdepth; + VectorCopy(trace->startdepthnormal, cliptrace->startdepthnormal); + } + } + // don't set this except on the world, because it can easily confuse + // monsters underwater if there's a bmodel involved in the trace + // (inopen && inwater is how they check water visibility) + //if (trace->inopen) + // cliptrace->inopen = true; + if (trace->inwater) + cliptrace->inwater = true; + if ((trace->realfraction <= cliptrace->realfraction) && (VectorLength2(trace->plane.normal) > 0)) + { + cliptrace->fraction = trace->fraction; + cliptrace->realfraction = trace->realfraction; + VectorCopy(trace->endpos, cliptrace->endpos); + cliptrace->plane = trace->plane; + cliptrace->ent = touch; + cliptrace->hitsupercontents = trace->hitsupercontents; + cliptrace->hitq3surfaceflags = trace->hitq3surfaceflags; + cliptrace->hittexture = trace->hittexture; + } + cliptrace->startsupercontents |= trace->startsupercontents; +} + +void Collision_ShortenTrace(trace_t *trace, float shorten_factor, const vec3_t end) +{ + // now undo our moving end 1 qu farther... + trace->fraction = bound(trace->fraction, trace->fraction / shorten_factor - 1e-6, 1); // we subtract 1e-6 to guard for roundoff errors + trace->realfraction = bound(trace->realfraction, trace->realfraction / shorten_factor - 1e-6, 1); // we subtract 1e-6 to guard for roundoff errors + if(trace->fraction >= 1) // trace would NOT hit if not expanded! + { + trace->fraction = 1; + trace->realfraction = 1; + VectorCopy(end, trace->endpos); + memset(&trace->plane, 0, sizeof(trace->plane)); + trace->ent = NULL; + trace->hitsupercontentsmask = 0; + trace->hitsupercontents = 0; + trace->hitq3surfaceflags = 0; + trace->hittexture = NULL; + } +}