this patch may break things and needs testing
[xonotic/darkplaces.git] / cl_collision.c
index 92d5b8d..82aa3ce 100644 (file)
@@ -2,182 +2,6 @@
 #include "quakedef.h"
 #include "cl_collision.h"
 
-/*
-// not yet used
-typedef struct physentity_s
-{
-       // this may be a entity_t, or a prvm_edict_t, or whatever
-       void *realentity;
-
-       // can be NULL if it is a bbox object
-       model_t *bmodel;
-
-       // node this entity crosses
-       // for avoiding unnecessary collisions
-       physnode_t *node;
-
-       // matrix for converting from model to world coordinates
-       double modeltoworldmatrix[3][4];
-
-       // matrix for converting from world to model coordinates
-       double worldtomodelmatrix[3][4];
-
-       // if this is a bmodel, this is used for culling it quickly
-       // if this is not a bmodel, this is used for actual collisions
-       double mins[3], maxs[3];
-}
-physentity_t;
-*/
-
-trace_t CL_TraceBox(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitbmodels, int *hitent, int hitsupercontentsmask, qboolean hitplayers)
-{
-       int n;
-       entity_render_t *ent;
-       vec3_t tracemins, tracemaxs;
-       trace_t cliptrace, trace;
-       vec3_t origin;
-       vec3_t starttransformed, endtransformed;
-       vec3_t entmins, entmaxs;
-       vec_t *playermins, *playermaxs;
-
-       memset (&cliptrace, 0 , sizeof(trace_t));
-       cliptrace.fraction = 1;
-       cliptrace.realfraction = 1;
-
-       if (cl.worldmodel && cl.worldmodel->TraceBox)
-               cl.worldmodel->TraceBox(cl.worldmodel, 0, &cliptrace, start, mins, maxs, end, hitsupercontentsmask);
-
-       if (hitent)
-               *hitent = 0;
-
-       if (hitbmodels && cl.num_brushmodel_entities)
-       {
-               tracemins[0] = min(start[0], end[0]) + mins[0];
-               tracemaxs[0] = max(start[0], end[0]) + maxs[0];
-               tracemins[1] = min(start[1], end[1]) + mins[1];
-               tracemaxs[1] = max(start[1], end[1]) + maxs[1];
-               tracemins[2] = min(start[2], end[2]) + mins[2];
-               tracemaxs[2] = max(start[2], end[2]) + maxs[2];
-
-               // look for embedded bmodels
-               for (n = 0;n < cl.num_brushmodel_entities;n++)
-               {
-                       ent = &cl.entities[cl.brushmodel_entities[n]].render;
-                       if (!BoxesOverlap(tracemins, tracemaxs, ent->mins, ent->maxs))
-                               continue;
-
-                       Matrix4x4_Transform(&ent->inversematrix, start, starttransformed);
-                       Matrix4x4_Transform(&ent->inversematrix, end, endtransformed);
-
-                       memset (&trace, 0 , sizeof(trace_t));
-                       trace.fraction = 1;
-                       trace.realfraction = 1;
-
-                       if (ent->model && ent->model->TraceBox)
-                               ent->model->TraceBox(ent->model, 0, &trace, starttransformed, mins, maxs, endtransformed, hitsupercontentsmask);
-
-                       // LordHavoc: take the 'best' answers from the new trace and combine with existing data
-                       if (trace.allsolid)
-                               cliptrace.allsolid = true;
-                       if (trace.startsolid)
-                       {
-                               cliptrace.startsolid = true;
-                               if (cliptrace.realfraction == 1)
-                                       if (hitent)
-                                               *hitent = cl.brushmodel_entities[n];
-                       }
-                       // 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)
-                       {
-                               cliptrace.fraction = trace.fraction;
-                               cliptrace.realfraction = trace.realfraction;
-                               cliptrace.plane = trace.plane;
-                               if (hitent)
-                                       *hitent = cl.brushmodel_entities[n];
-                               Matrix4x4_Transform3x3(&ent->matrix, trace.plane.normal, cliptrace.plane.normal);
-                               cliptrace.hitsupercontents = trace.hitsupercontents;
-                               cliptrace.hitq3surfaceflags = trace.hitq3surfaceflags;
-                               cliptrace.hittexture = trace.hittexture;
-                       }
-                       cliptrace.startsupercontents |= trace.startsupercontents;
-               }
-       }
-       if (hitplayers)
-       {
-               tracemins[0] = min(start[0], end[0]) + mins[0];
-               tracemaxs[0] = max(start[0], end[0]) + maxs[0];
-               tracemins[1] = min(start[1], end[1]) + mins[1];
-               tracemaxs[1] = max(start[1], end[1]) + maxs[1];
-               tracemins[2] = min(start[2], end[2]) + mins[2];
-               tracemaxs[2] = max(start[2], end[2]) + maxs[2];
-
-               for (n = 1;n < cl.maxclients+1;n++)
-               {
-                       if (n != cl.playerentity)
-                       {
-                               ent = &cl.entities[n].render;
-                               // FIXME: crouch
-                               playermins = cl.playerstandmins;
-                               playermaxs = cl.playerstandmaxs;
-                               Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
-                               VectorAdd(origin, playermins, entmins);
-                               VectorAdd(origin, playermaxs, entmaxs);
-                               if (!BoxesOverlap(tracemins, tracemaxs, entmins, entmaxs))
-                                       continue;
-
-                               memset (&trace, 0 , sizeof(trace_t));
-                               trace.fraction = 1;
-                               trace.realfraction = 1;
-
-                               Matrix4x4_Transform(&ent->inversematrix, start, starttransformed);
-                               Matrix4x4_Transform(&ent->inversematrix, end, endtransformed);
-                               Collision_ClipTrace_Box(&trace, playermins, playermaxs, starttransformed, mins, maxs, endtransformed, hitsupercontentsmask, SUPERCONTENTS_BODY, 0, NULL);
-
-                               // LordHavoc: take the 'best' answers from the new trace and combine with existing data
-                               if (trace.allsolid)
-                                       cliptrace.allsolid = true;
-                               if (trace.startsolid)
-                               {
-                                       cliptrace.startsolid = true;
-                                       if (cliptrace.realfraction == 1)
-                                               if (hitent)
-                                                       *hitent = n;
-                               }
-                               // 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)
-                               {
-                                       cliptrace.fraction = trace.fraction;
-                                       cliptrace.realfraction = trace.realfraction;
-                                       cliptrace.plane = trace.plane;
-                                       if (hitent)
-                                               *hitent = n;
-                                       Matrix4x4_Transform3x3(&ent->matrix, trace.plane.normal, cliptrace.plane.normal);
-                                       cliptrace.hitsupercontents = trace.hitsupercontents;
-                                       cliptrace.hitq3surfaceflags = trace.hitq3surfaceflags;
-                                       cliptrace.hittexture = trace.hittexture;
-                               }
-                               cliptrace.startsupercontents |= trace.startsupercontents;
-                       }
-               }
-       }
-       cliptrace.fraction = bound(0, cliptrace.fraction, 1);
-       cliptrace.realfraction = bound(0, cliptrace.realfraction, 1);
-       VectorLerp(start, cliptrace.fraction, end, cliptrace.endpos);
-       return cliptrace;
-}
-
 float CL_SelectTraceLine(const vec3_t start, const vec3_t end, vec3_t impact, vec3_t normal, int *hitent, entity_render_t *ignoreent)
 {
        float maxfrac, maxrealfrac;
@@ -260,8 +84,268 @@ void CL_FindNonSolidLocation(const vec3_t in, vec3_t out, vec_t radius)
                cl.worldmodel->brush.FindNonSolidLocation(cl.worldmodel, in, out, radius);
 }
 
-int CL_PointSuperContents(const vec3_t p)
+model_t *CL_GetModelByIndex(int modelindex)
 {
-       return CL_TraceBox(p, vec3_origin, vec3_origin, p, true, NULL, 0, false).startsupercontents;
+       if(!modelindex)
+               return NULL;
+       if (modelindex < 0)
+       {
+               modelindex = -(modelindex+1);
+               if (modelindex < MAX_MODELS)
+                       return cl.csqc_model_precache[modelindex];
+       }
+       else
+       {
+               if(modelindex < MAX_MODELS)
+                       return cl.model_precache[modelindex];
+       }
+       return NULL;
+}
+
+model_t *CL_GetModelFromEdict(prvm_edict_t *ed)
+{
+       if (!ed || ed->priv.server->free)
+               return NULL;
+       return CL_GetModelByIndex((int)ed->fields.client->modelindex);
+}
+
+void CL_LinkEdict(prvm_edict_t *ent)
+{
+       if (ent == prog->edicts)
+               return;         // don't add the world
+
+       if (ent->priv.server->free)
+               return;
+
+       VectorAdd(ent->fields.client->origin, ent->fields.client->mins, ent->fields.client->absmin);
+       VectorAdd(ent->fields.client->origin, ent->fields.client->maxs, ent->fields.client->absmax);
+
+       World_LinkEdict(&cl.world, ent, ent->fields.client->absmin, ent->fields.client->absmax);
 }
 
+int CL_GenericHitSuperContentsMask(const prvm_edict_t *passedict)
+{
+       prvm_eval_t *val;
+       if (passedict)
+       {
+               val = PRVM_EDICTFIELDVALUE(passedict, prog->fieldoffsets.dphitcontentsmask);
+               if (val && val->_float)
+                       return (int)val->_float;
+               else if (passedict->fields.client->solid == SOLID_SLIDEBOX)
+               {
+                       if ((int)passedict->fields.client->flags & FL_MONSTER)
+                               return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_MONSTERCLIP;
+                       else
+                               return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_PLAYERCLIP;
+               }
+               else if (passedict->fields.client->solid == SOLID_CORPSE)
+                       return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY;
+               else
+                       return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_CORPSE;
+       }
+       else
+               return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_CORPSE;
+}
+
+/*
+==================
+CL_Move
+==================
+*/
+extern cvar_t sv_debugmove;
+trace_t CL_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask, qboolean hitnetworkbrushmodels, qboolean hitnetworkplayers, int *hitnetworkentity, qboolean hitcsqcentities)
+{
+       vec3_t hullmins, hullmaxs;
+       int i;
+       int passedictprog;
+       qboolean pointtrace;
+       prvm_edict_t *traceowner, *touch;
+       trace_t trace;
+       // bounding box of entire move area
+       vec3_t clipboxmins, clipboxmaxs;
+       // size of the moving object
+       vec3_t clipmins, clipmaxs;
+       // size when clipping against monsters
+       vec3_t clipmins2, clipmaxs2;
+       // start and end origin of move
+       vec3_t clipstart, clipend;
+       // trace results
+       trace_t cliptrace;
+       // matrices to transform into/out of other entity's space
+       matrix4x4_t matrix, imatrix;
+       // model of other entity
+       model_t *model;
+       // list of entities to test for collisions
+       int numtouchedicts;
+       prvm_edict_t *touchedicts[MAX_EDICTS];
+
+       if (hitnetworkentity)
+               *hitnetworkentity = 0;
+
+       VectorCopy(start, clipstart);
+       VectorCopy(end, clipend);
+       VectorCopy(mins, clipmins);
+       VectorCopy(maxs, clipmaxs);
+       VectorCopy(mins, clipmins2);
+       VectorCopy(maxs, clipmaxs2);
+#if COLLISIONPARANOID >= 3
+       Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
+#endif
+
+       // clip to world
+       Collision_ClipToWorld(&cliptrace, cl.worldmodel, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask);
+       cliptrace.bmodelstartsolid = cliptrace.startsolid;
+       if (cliptrace.startsolid || cliptrace.fraction < 1)
+               cliptrace.ent = prog ? prog->edicts : NULL;
+       if (type == MOVE_WORLDONLY)
+               return cliptrace;
+
+       if (type == MOVE_MISSILE)
+       {
+               // LordHavoc: modified this, was = -15, now -= 15
+               for (i = 0;i < 3;i++)
+               {
+                       clipmins2[i] -= 15;
+                       clipmaxs2[i] += 15;
+               }
+       }
+
+       // get adjusted box for bmodel collisions if the world is q1bsp or hlbsp
+       if (cl.worldmodel && cl.worldmodel->brush.RoundUpToHullSize)
+               cl.worldmodel->brush.RoundUpToHullSize(cl.worldmodel, clipmins, clipmaxs, hullmins, hullmaxs);
+       else
+       {
+               VectorCopy(clipmins, hullmins);
+               VectorCopy(clipmaxs, hullmaxs);
+       }
+
+       // create the bounding box of the entire move
+       for (i = 0;i < 3;i++)
+       {
+               clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + min(hullmins[i], clipmins2[i]) - 1;
+               clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + max(hullmaxs[i], clipmaxs2[i]) + 1;
+       }
+
+       // debug override to test against everything
+       if (sv_debugmove.integer)
+       {
+               clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = -999999999;
+               clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  999999999;
+       }
+
+       // if the passedict is world, make it NULL (to avoid two checks each time)
+       // this checks prog because this function is often called without a CSQC
+       // VM context
+       if (prog == NULL || passedict == prog->edicts)
+               passedict = NULL;
+       // precalculate prog value for passedict for comparisons
+       passedictprog = prog != NULL ? PRVM_EDICT_TO_PROG(passedict) : 0;
+       // figure out whether this is a point trace for comparisons
+       pointtrace = VectorCompare(clipmins, clipmaxs);
+       // precalculate passedict's owner edict pointer for comparisons
+       traceowner = passedict ? PRVM_PROG_TO_EDICT(passedict->fields.client->owner) : 0;
+
+       // collide against network entities
+       if (hitnetworkbrushmodels)
+       {
+               for (i = 0;i < cl.num_brushmodel_entities;i++)
+               {
+                       entity_render_t *ent = &cl.entities[cl.brushmodel_entities[i]].render;
+                       if (!BoxesOverlap(clipboxmins, clipboxmaxs, ent->mins, ent->maxs))
+                               continue;
+                       Collision_ClipToGenericEntity(&trace, ent->model, ent->frame, vec3_origin, vec3_origin, 0, &ent->matrix, &ent->inversematrix, start, mins, maxs, end, hitsupercontentsmask);
+                       if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
+                               *hitnetworkentity = cl.brushmodel_entities[i];
+                       Collision_CombineTraces(&cliptrace, &trace, NULL, true);
+               }
+       }
+
+       // collide against player entities
+       if (hitnetworkplayers)
+       {
+               vec3_t origin, entmins, entmaxs;
+               matrix4x4_t entmatrix, entinversematrix;
+               for (i = 1;i < cl.maxclients+1;i++)
+               {
+                       entity_render_t *ent = &cl.entities[i].render;
+                       // don't hit ourselves
+                       if (i == cl.playerentity)
+                               continue;
+                       Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
+                       VectorAdd(origin, cl.playerstandmins, entmins);
+                       VectorAdd(origin, cl.playerstandmaxs, entmaxs);
+                       if (!BoxesOverlap(clipboxmins, clipboxmaxs, entmins, entmaxs))
+                               continue;
+                       Matrix4x4_CreateTranslate(&entmatrix, origin[0], origin[1], origin[2]);
+                       Matrix4x4_CreateTranslate(&entinversematrix, -origin[0], -origin[1], -origin[2]);
+                       Collision_ClipToGenericEntity(&trace, NULL, 0, cl.playerstandmins, cl.playerstandmaxs, SUPERCONTENTS_BODY, &entmatrix, &entinversematrix, start, mins, maxs, end, hitsupercontentsmask);
+                       if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
+                               *hitnetworkentity = i;
+                       Collision_CombineTraces(&cliptrace, &trace, NULL, false);
+               }
+       }
+
+       // clip to entities
+       // because this uses World_EntitiestoBox, we know all entity boxes overlap
+       // the clip region, so we can skip culling checks in the loop below
+       // note: if prog is NULL then there won't be any linked entities
+       numtouchedicts = 0;
+       if (hitcsqcentities && prog != NULL)
+       {
+               numtouchedicts = World_EntitiesInBox(&cl.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
+               if (numtouchedicts > MAX_EDICTS)
+               {
+                       // this never happens
+                       Con_Printf("CL_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
+                       numtouchedicts = MAX_EDICTS;
+               }
+       }
+       for (i = 0;i < numtouchedicts;i++)
+       {
+               touch = touchedicts[i];
+
+               if (touch->fields.client->solid < SOLID_BBOX)
+                       continue;
+               if (type == MOVE_NOMONSTERS && touch->fields.client->solid != SOLID_BSP)
+                       continue;
+
+               if (passedict)
+               {
+                       // don't clip against self
+                       if (passedict == touch)
+                               continue;
+                       // don't clip owned entities against owner
+                       if (traceowner == touch)
+                               continue;
+                       // don't clip owner against owned entities
+                       if (passedictprog == touch->fields.client->owner)
+                               continue;
+                       // don't clip points against points (they can't collide)
+                       if (pointtrace && VectorCompare(touch->fields.client->mins, touch->fields.client->maxs) && (type != MOVE_MISSILE || !((int)touch->fields.client->flags & FL_MONSTER)))
+                               continue;
+               }
+
+               // might interact, so do an exact clip
+               model = NULL;
+               if ((int) touch->fields.client->solid == SOLID_BSP || type == MOVE_HITMODEL)
+               {
+                       unsigned int modelindex = (unsigned int)touch->fields.client->modelindex;
+                       // if the modelindex is 0, it shouldn't be SOLID_BSP!
+                       if (modelindex > 0 && modelindex < MAX_MODELS)
+                               model = CL_GetModelByIndex((int)touch->fields.client->modelindex);
+                       Matrix4x4_CreateFromQuakeEntity(&matrix, touch->fields.client->origin[0], touch->fields.client->origin[1], touch->fields.client->origin[2], touch->fields.client->angles[0], touch->fields.client->angles[1], touch->fields.client->angles[2], 1);
+               }
+               else
+                       Matrix4x4_CreateTranslate(&matrix, touch->fields.client->origin[0], touch->fields.client->origin[1], touch->fields.client->origin[2]);
+               Matrix4x4_Invert_Simple(&imatrix, &matrix);
+               if ((int)touch->fields.client->flags & FL_MONSTER)
+                       Collision_ClipToGenericEntity(&trace, model, touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, SUPERCONTENTS_BODY, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask);
+               else
+                       Collision_ClipToGenericEntity(&trace, model, touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, SUPERCONTENTS_BODY, &matrix, &imatrix, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask);
+               if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
+                       *hitnetworkentity = 0;
+               Collision_CombineTraces(&cliptrace, &trace, (void *)touch, touch->fields.client->solid == SOLID_BSP);
+       }
+
+       return cliptrace;
+}