X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=blobdiff_plain;f=r_explosion.c;h=430e399c08533ef30bc8f9fdbd27fff52e771139;hp=bff9f5cff00be67a2bd96f84aed097129ba9f9e0;hb=066c77541b654eb4665614c07126b864b9d5e2f7;hpb=6b7b09432f660c26297ea84b4ce1b05e8c4011bf

diff --git a/r_explosion.c b/r_explosion.c
index bff9f5cf..430e399c 100644
--- a/r_explosion.c
+++ b/r_explosion.c
@@ -8,7 +8,7 @@ of the License, or (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
 See the GNU General Public License for more details.
 
@@ -19,96 +19,110 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
 #include "quakedef.h"
-
-float TraceLine (vec3_t start, vec3_t end, vec3_t impact, vec3_t normal);
+#include "cl_collision.h"
 
 #define MAX_EXPLOSIONS 64
-#define EXPLOSIONBANDS 16
-#define EXPLOSIONSEGMENTS 16
-#define EXPLOSIONVERTS ((EXPLOSIONBANDS+1)*(EXPLOSIONSEGMENTS+1))
-#define EXPLOSIONTRIS (EXPLOSIONVERTS*2)
-#define EXPLOSIONSTARTRADIUS (0.0f)
-#define EXPLOSIONSTARTVELOCITY (400.0f)
-#define EXPLOSIONFADESTART (1.5f)
-#define EXPLOSIONFADERATE (6.0f)
-
-vec3_t explosionspherevert[EXPLOSIONVERTS];
-vec3_t explosionspherevertvel[EXPLOSIONVERTS];
-float explosiontexcoords[EXPLOSIONVERTS][2];
-int explosiontris[EXPLOSIONTRIS][3];
-vec3_t explosionpoint[EXPLOSIONVERTS];
+#define EXPLOSIONGRID 8
+#define EXPLOSIONVERTS ((EXPLOSIONGRID+1)*(EXPLOSIONGRID+1))
+#define EXPLOSIONTRIS (EXPLOSIONGRID*EXPLOSIONGRID*2)
+
+static float explosiontexcoord2f[EXPLOSIONVERTS][2];
+static int explosiontris[EXPLOSIONTRIS][3];
+static int explosionnoiseindex[EXPLOSIONVERTS];
+static vec3_t explosionpoint[EXPLOSIONVERTS];
 
 typedef struct explosion_s
 {
+	float starttime;
+	float endtime;
+	float time;
 	float alpha;
+	float fade;
+	vec3_t origin;
 	vec3_t vert[EXPLOSIONVERTS];
 	vec3_t vertvel[EXPLOSIONVERTS];
+	qboolean clipping;
 }
 explosion_t;
 
-explosion_t explosion[128];
+static explosion_t explosion[MAX_EXPLOSIONS];
 
-int		explosiontexture;
-int		explosiontexturefog;
+static rtexture_t	*explosiontexture;
+static rtexture_t	*explosiontexturefog;
 
-cvar_t r_explosionclip = {"r_explosionclip", "0"};
+static rtexturepool_t	*explosiontexturepool;
 
-int R_ExplosionVert(int column, int row)
-{
-	int i;
-	float a, b, c;
-	i = row * (EXPLOSIONSEGMENTS + 1) + column;
-	a = row * M_PI * 2 / EXPLOSIONBANDS;
-	b = column * M_PI * 2 / EXPLOSIONSEGMENTS;
-	c = cos(b);
-	explosionpoint[i][0] = cos(a) * c;
-	explosionpoint[i][1] = sin(a) * c;
-	explosionpoint[i][2] = -sin(b);
-	explosiontexcoords[i][0] = (float) column / (float) EXPLOSIONSEGMENTS;
-	explosiontexcoords[i][1] = (float) row / (float) EXPLOSIONBANDS;
-	return i;
-}
+cvar_t r_explosionclip = {CVAR_SAVE, "r_explosionclip", "1"};
+static cvar_t r_drawexplosions = {0, "r_drawexplosions", "1"};
 
-void r_explosion_start()
+static void r_explosion_start(void)
 {
 	int x, y;
-	byte noise1[128][128], noise2[128][128], data[128][128][4];
-	fractalnoise(&noise1[0][0], 128, 8);
-	fractalnoise(&noise2[0][0], 128, 8);
+	qbyte noise1[128][128], noise2[128][128], noise3[128][128], data[128][128][4];
+	explosiontexturepool = R_AllocTexturePool();
+	fractalnoise(&noise1[0][0], 128, 32);
+	fractalnoise(&noise2[0][0], 128, 4);
+	fractalnoise(&noise3[0][0], 128, 4);
 	for (y = 0;y < 128;y++)
 	{
 		for (x = 0;x < 128;x++)
 		{
 			int j, r, g, b, a;
-			j = noise1[y][x] * 3 - 128;
+			j = (noise1[y][x] * noise2[y][x]) * 3 / 256 - 128;
 			r = (j * 512) / 256;
 			g = (j * 256) / 256;
 			b = (j * 128) / 256;
-			a = noise2[y][x];
+			a = noise3[y][x] * 3 - 128;
 			data[y][x][0] = bound(0, r, 255);
 			data[y][x][1] = bound(0, g, 255);
 			data[y][x][2] = bound(0, b, 255);
 			data[y][x][3] = bound(0, a, 255);
 		}
 	}
-	explosiontexture = GL_LoadTexture ("explosiontexture", 128, 128, &data[0][0][0], true, true, 4);
+	explosiontexture = R_LoadTexture2D(explosiontexturepool, "explosiontexture", 128, 128, &data[0][0][0], TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE, NULL);
 	for (y = 0;y < 128;y++)
 		for (x = 0;x < 128;x++)
 			data[y][x][0] = data[y][x][1] = data[y][x][2] = 255;
-	explosiontexturefog = GL_LoadTexture ("explosiontexturefog", 128, 128, &data[0][0][0], true, true, 4);
+	explosiontexturefog = R_LoadTexture2D(explosiontexturepool, "explosiontexturefog", 128, 128, &data[0][0][0], TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE, NULL);
+	// note that explosions survive the restart
+}
+
+static void r_explosion_shutdown(void)
+{
+	R_FreeTexturePool(&explosiontexturepool);
+}
+
+static void r_explosion_newmap(void)
+{
+	memset(explosion, 0, sizeof(explosion));
 }
 
-void r_explosion_shutdown()
+static int R_ExplosionVert(int column, int row)
 {
+	int i;
+	float yaw, pitch;
+	// top and bottom rows are all one position...
+	if (row == 0 || row == EXPLOSIONGRID)
+		column = 0;
+	i = row * (EXPLOSIONGRID + 1) + column;
+	yaw = ((double) column / EXPLOSIONGRID) * M_PI * 2;
+	pitch = (((double) row / EXPLOSIONGRID) - 0.5) * M_PI;
+	explosionpoint[i][0] = cos(yaw) *  cos(pitch);
+	explosionpoint[i][1] = sin(yaw) *  cos(pitch);
+	explosionpoint[i][2] =        1 * -sin(pitch);
+	explosiontexcoord2f[i][0] = (float) column / (float) EXPLOSIONGRID;
+	explosiontexcoord2f[i][1] = (float) row / (float) EXPLOSIONGRID;
+	explosionnoiseindex[i] = (row % EXPLOSIONGRID) * EXPLOSIONGRID + (column % EXPLOSIONGRID);
+	return i;
 }
 
-void R_Explosion_Init()
+void R_Explosion_Init(void)
 {
 	int i, x, y;
 	i = 0;
-	for (y = 0;y < EXPLOSIONBANDS;y++)
+	for (y = 0;y < EXPLOSIONGRID;y++)
 	{
-		for (x = 0;x < EXPLOSIONSEGMENTS;x++)
+		for (x = 0;x < EXPLOSIONGRID;x++)
 		{
 			explosiontris[i][0] = R_ExplosionVert(x    , y    );
 			explosiontris[i][1] = R_ExplosionVert(x + 1, y    );
@@ -120,143 +134,130 @@ void R_Explosion_Init()
 			i++;
 		}
 	}
-	for (i = 0;i < EXPLOSIONVERTS;i++)
-	{
-		explosionspherevert[i][0] = explosionpoint[i][0] * EXPLOSIONSTARTRADIUS;
-		explosionspherevert[i][1] = explosionpoint[i][1] * EXPLOSIONSTARTRADIUS;
-		explosionspherevert[i][2] = explosionpoint[i][2] * EXPLOSIONSTARTRADIUS;
-		explosionspherevertvel[i][0] = explosionpoint[i][0] * EXPLOSIONSTARTVELOCITY;
-		explosionspherevertvel[i][1] = explosionpoint[i][1] * EXPLOSIONSTARTVELOCITY;
-		explosionspherevertvel[i][2] = explosionpoint[i][2] * EXPLOSIONSTARTVELOCITY;
-	}
 
 	Cvar_RegisterVariable(&r_explosionclip);
+	Cvar_RegisterVariable(&r_drawexplosions);
 
-	R_RegisterModule("R_Explosions", r_explosion_start, r_explosion_shutdown);
+	R_RegisterModule("R_Explosions", r_explosion_start, r_explosion_shutdown, r_explosion_newmap);
 }
 
 void R_NewExplosion(vec3_t org)
 {
 	int i, j;
-	for (i = 0;i < MAX_EXPLOSIONS;i++)
+	float dist, n;
+	explosion_t *e;
+	trace_t trace;
+	qbyte noise[EXPLOSIONGRID*EXPLOSIONGRID];
+	fractalnoisequick(noise, EXPLOSIONGRID, 4); // adjust noise grid size according to explosion
+	for (i = 0, e = explosion;i < MAX_EXPLOSIONS;i++, e++)
 	{
-		if (explosion[i].alpha <= 0.0f)
+		if (cl.time >= e->endtime)
 		{
-			explosion[i].alpha = EXPLOSIONFADESTART;
+			e->starttime = cl.time;
+			e->endtime = cl.time + cl_explosions_lifetime.value;
+			e->time = e->starttime;
+			e->alpha = cl_explosions_alpha_start.value;
+			e->fade = (cl_explosions_alpha_start.value - cl_explosions_alpha_end.value) / cl_explosions_lifetime.value;
+			e->clipping = r_explosionclip.integer != 0;
+			VectorCopy(org, e->origin);
 			for (j = 0;j < EXPLOSIONVERTS;j++)
 			{
-				explosion[i].vert[j][0] = explosionspherevert[j][0] + org[0];
-				explosion[i].vert[j][1] = explosionspherevert[j][1] + org[1];
-				explosion[i].vert[j][2] = explosionspherevert[j][2] + org[2];
-				explosion[i].vertvel[j][0] = explosionspherevertvel[j][0];
-				explosion[i].vertvel[j][1] = explosionspherevertvel[j][1];
-				explosion[i].vertvel[j][2] = explosionspherevertvel[j][2];
+				// calculate start origin and velocity
+				n = noise[explosionnoiseindex[j]] * (1.0f / 255.0f) + 0.5;
+				dist = n * cl_explosions_size_start.value;
+				VectorMA(e->origin, dist, explosionpoint[j], e->vert[j]);
+				dist = n * (cl_explosions_size_end.value - cl_explosions_size_start.value) / cl_explosions_lifetime.value;
+				VectorScale(explosionpoint[j], dist, e->vertvel[j]);
+				// clip start origin
+				if (e->clipping)
+				{
+					trace = CL_TraceBox(e->origin, vec3_origin, vec3_origin, e->vert[j], true, NULL, SUPERCONTENTS_SOLID, false);
+					VectorCopy(trace.endpos, e->vert[i]);
+				}
 			}
 			break;
 		}
 	}
 }
 
-void R_DrawExplosion(explosion_t *e)
+static void R_DrawExplosionCallback(const void *calldata1, int calldata2)
 {
-	int i, index, *indexlist = &explosiontris[0][0], alpha = bound(0, e->alpha * 255.0f, 255);
-	float s = cl.time * 1, t = cl.time * 0.75;
-	s -= (int) s;
-	t -= (int) t;
-	/*
-	glColor4f(1,1,1,e->alpha);
-	glDisable(GL_TEXTURE_2D);
-//	glBindTexture(GL_TEXTURE_2D, explosiontexture);
-	if (gl_vertexarrays.value)
-	{
-		qglVertexPointer(3, GL_FLOAT, 0, (float *) &e->vert[0][0]);
-//		qglTexCoordPointer(2, GL_FLOAT, 0, (float *) &explosiontexcoords[0][0]);
-		glEnableClientState(GL_VERTEX_ARRAY);
-//		glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-		qglDrawElements(GL_TRIANGLES, EXPLOSIONTRIS, GL_UNSIGNED_INT, indexlist);
-//		glDisableClientState(GL_TEXTURE_COORD_ARRAY);
-		glDisableClientState(GL_VERTEX_ARRAY);
-	}
-	else
-	{
-		glBegin(GL_TRIANGLES);
-		for (i = 0;i < EXPLOSIONTRIS * 3;i++)
-		{
-			index = *indexlist++;
-//			glTexCoord2fv(explosiontexcoords[index]);
-			glVertex3fv(e->vert[index]);
-		}
-		glEnd();
-	}
-	glEnable(GL_TEXTURE_2D);
-	*/
-	for (i = 0;i < EXPLOSIONTRIS;i++)
-	{
-		transpolybegin(explosiontexture, 0, explosiontexturefog, TPOLYTYPE_ALPHA);
-		index = *indexlist++;transpolyvert(e->vert[index][0], e->vert[index][1], e->vert[index][2], explosiontexcoords[index][0] + s, explosiontexcoords[index][1] + t, 255, 255, 255, alpha);
-		index = *indexlist++;transpolyvert(e->vert[index][0], e->vert[index][1], e->vert[index][2], explosiontexcoords[index][0] + s, explosiontexcoords[index][1] + t, 255, 255, 255, alpha);
-		index = *indexlist++;transpolyvert(e->vert[index][0], e->vert[index][1], e->vert[index][2], explosiontexcoords[index][0] + s, explosiontexcoords[index][1] + t, 255, 255, 255, alpha);
-		transpolyend();
-	}
+	int numtriangles, numverts;
+	float alpha;
+	rmeshstate_t m;
+	const explosion_t *e;
+	e = calldata1;
+
+	GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
+	GL_DepthMask(false);
+	GL_DepthTest(true);
+	R_Mesh_Matrix(&r_identitymatrix);
+
+	numtriangles = EXPLOSIONTRIS;
+	numverts = EXPLOSIONVERTS;
+	alpha = e->alpha;
+
+	memset(&m, 0, sizeof(m));
+	m.tex[0] = R_GetTexture(explosiontexture);
+	m.pointer_texcoord[0] = explosiontexcoord2f[0];
+	m.pointer_vertex = e->vert[0];
+	R_Mesh_State(&m);
+
+	GL_Color(alpha, alpha, alpha, 1);
+
+	GL_LockArrays(0, numverts);
+	R_Mesh_Draw(0, numverts, numtriangles, explosiontris[0]);
+	GL_LockArrays(0, 0);
 }
 
-void R_MoveExplosion(explosion_t *e, float frametime)
+static void R_MoveExplosion(explosion_t *e)
 {
 	int i;
-	vec3_t end;
-	e->alpha -= frametime * EXPLOSIONFADERATE;
+	float dot, end[3], frametime;
+	trace_t trace;
+
+	frametime = cl.time - e->time;
+	e->time = cl.time;
+	e->alpha = e->alpha - (e->fade * frametime);
 	for (i = 0;i < EXPLOSIONVERTS;i++)
 	{
 		if (e->vertvel[i][0] || e->vertvel[i][1] || e->vertvel[i][2])
 		{
-			end[0] = e->vert[i][0] + frametime * e->vertvel[i][0];
-			end[1] = e->vert[i][1] + frametime * e->vertvel[i][1];
-			end[2] = e->vert[i][2] + frametime * e->vertvel[i][2];
-			if (r_explosionclip.value)
+			VectorMA(e->vert[i], frametime, e->vertvel[i], end);
+			if (e->clipping)
 			{
-				float f, dot;
-				vec3_t impact, normal;
-				f = TraceLine(e->vert[i], end, impact, normal);
-				VectorCopy(impact, e->vert[i]);
-				if (f < 1)
+				trace = CL_TraceBox(e->vert[i], vec3_origin, vec3_origin, end, true, NULL, SUPERCONTENTS_SOLID, false);
+				if (trace.fraction < 1)
 				{
 					// clip velocity against the wall
-					dot = -DotProduct(e->vertvel[i], normal);
-					e->vertvel[i][0] += normal[0] * dot;
-					e->vertvel[i][1] += normal[1] * dot;
-					e->vertvel[i][2] += normal[2] * dot;
+					dot = -DotProduct(e->vertvel[i], trace.plane.normal);
+					VectorMA(e->vertvel[i], dot, trace.plane.normal, e->vertvel[i]);
 				}
+				VectorCopy(trace.endpos, e->vert[i]);
 			}
 			else
-			{
 				VectorCopy(end, e->vert[i]);
-			}
 		}
 	}
 }
 
-void R_MoveExplosions()
+
+void R_MoveExplosions(void)
 {
 	int i;
-	float frametime;
-	frametime = cl.time - cl.oldtime;
 	for (i = 0;i < MAX_EXPLOSIONS;i++)
-	{
-		if (explosion[i].alpha > 0.0f)
-		{
-			R_MoveExplosion(&explosion[i], frametime);
-		}
-	}
+		if (cl.time < explosion[i].endtime)
+			R_MoveExplosion(&explosion[i]);
 }
 
-void R_DrawExplosions()
+void R_DrawExplosions(void)
 {
 	int i;
+
+	if (!r_drawexplosions.integer)
+		return;
 	for (i = 0;i < MAX_EXPLOSIONS;i++)
-	{
-		if (explosion[i].alpha > 0.0f)
-		{
-			R_DrawExplosion(&explosion[i]);
-		}
-	}
+		if (r_refdef.time < explosion[i].endtime)
+			R_MeshQueue_AddTransparent(explosion[i].origin, R_DrawExplosionCallback, &explosion[i], 0);
 }
+