X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=blobdiff_plain;f=r_explosion.c;h=b5654092e18eb945874d5ed0d9b96387cfd1ead3;hp=db67b390a9ae634dae1b98242ce3c987759a0496;hb=66ae08799675241ffa3cc3bcaa211fddcd63387c;hpb=8468ffaf8162a4fe8361127385c40141c375661d

diff --git a/r_explosion.c b/r_explosion.c
index db67b390..b5654092 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.
 
@@ -19,90 +19,78 @@ 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 EXPLOSIONGRID 16
+#define EXPLOSIONGRID 8
 #define EXPLOSIONVERTS ((EXPLOSIONGRID+1)*(EXPLOSIONGRID+1))
-#define EXPLOSIONTRIS (EXPLOSIONVERTS*2)
-#define EXPLOSIONSTARTRADIUS (0.0f)
-#define EXPLOSIONSTARTVELOCITY (500.0f)
+#define EXPLOSIONTRIS (EXPLOSIONGRID*EXPLOSIONGRID*2)
+#define EXPLOSIONSTARTVELOCITY (256.0f)
 #define EXPLOSIONFADESTART (1.5f)
-#define EXPLOSIONFADERATE (6.0f)
+#define EXPLOSIONFADERATE (3.0f)
 
-vec3_t explosionspherevert[EXPLOSIONVERTS];
-vec3_t explosionspherevertvel[EXPLOSIONVERTS];
-float explosiontexcoords[EXPLOSIONVERTS][2];
+float explosiontexcoords[EXPLOSIONVERTS][4];
 int explosiontris[EXPLOSIONTRIS][3];
 int explosionnoiseindex[EXPLOSIONVERTS];
 vec3_t explosionpoint[EXPLOSIONVERTS];
+vec3_t explosionspherevertvel[EXPLOSIONVERTS];
 
 typedef struct explosion_s
 {
 	float starttime;
+	float time;
 	float alpha;
+	vec3_t origin;
 	vec3_t vert[EXPLOSIONVERTS];
 	vec3_t vertvel[EXPLOSIONVERTS];
 }
 explosion_t;
 
-explosion_t explosion[128];
+explosion_t explosion[MAX_EXPLOSIONS];
 
 rtexture_t	*explosiontexture;
 rtexture_t	*explosiontexturefog;
 
+rtexturepool_t	*explosiontexturepool;
+
 cvar_t r_explosionclip = {CVAR_SAVE, "r_explosionclip", "1"};
 cvar_t r_drawexplosions = {0, "r_drawexplosions", "1"};
 
-int R_ExplosionVert(int column, int row)
-{
-	int i;
-	float a, b, c;
-	i = row * (EXPLOSIONGRID + 1) + column;
-	a = row * M_PI * 2 / EXPLOSIONGRID;
-	b = column * M_PI * 2 / EXPLOSIONGRID;
-	c = cos(b);
-	explosionpoint[i][0] = cos(a) * c;
-	explosionpoint[i][1] = sin(a) * c;
-	explosionpoint[i][2] = -sin(b);
-	explosionnoiseindex[i] = (row & (EXPLOSIONGRID - 1)) * EXPLOSIONGRID + (column & (EXPLOSIONGRID - 1));
-	explosiontexcoords[i][0] = (float) column / (float) EXPLOSIONGRID;
-	explosiontexcoords[i][1] = (float) row / (float) EXPLOSIONGRID;
-	return i;
-}
-
 void r_explosion_start(void)
 {
 	int x, y;
-	byte noise1[128][128], noise2[128][128], data[128][128][4];
-	fractalnoise(&noise1[0][0], 128, 2);
-	fractalnoise(&noise2[0][0], 128, 2);
+	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 = R_LoadTexture ("explosiontexture", 128, 128, &data[0][0][0], TEXF_MIPMAP | TEXF_ALPHA | TEXF_RGBA | TEXF_PRECACHE);
+	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 = R_LoadTexture ("explosiontexturefog", 128, 128, &data[0][0][0], TEXF_MIPMAP | TEXF_ALPHA | TEXF_RGBA | TEXF_PRECACHE);
+	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
 }
 
 void r_explosion_shutdown(void)
 {
+	R_FreeTexturePool(&explosiontexturepool);
 }
 
 void r_explosion_newmap(void)
@@ -110,6 +98,29 @@ void r_explosion_newmap(void)
 	memset(explosion, 0, sizeof(explosion));
 }
 
+int R_ExplosionVert(int column, int row)
+{
+	int i;
+	float a, b, c;
+	i = row * (EXPLOSIONGRID + 1) + column;
+	a = ((double) row / EXPLOSIONGRID) * M_PI * 2;
+	b = (((double) column / EXPLOSIONGRID) + 0.5) * M_PI;
+	c = cos(b);
+	explosionpoint[i][0] = cos(a) * c;
+	explosionpoint[i][1] = sin(a) * c;
+	explosionpoint[i][2] = -sin(b);
+	explosionspherevertvel[i][0] = explosionpoint[i][0] * EXPLOSIONSTARTVELOCITY;
+	explosionspherevertvel[i][1] = explosionpoint[i][1] * EXPLOSIONSTARTVELOCITY;
+	explosionspherevertvel[i][2] = explosionpoint[i][2] * EXPLOSIONSTARTVELOCITY;
+	explosiontexcoords[i][0] = (float) column / (float) EXPLOSIONGRID;
+	explosiontexcoords[i][1] = (float) row / (float) EXPLOSIONGRID;
+	// top and bottom rows are all one position...
+	if (row == 0 || row == EXPLOSIONGRID)
+		column = 0;
+	explosionnoiseindex[i] = (row % EXPLOSIONGRID) * EXPLOSIONGRID + (column % EXPLOSIONGRID);
+	return i;
+}
+
 void R_Explosion_Init(void)
 {
 	int i, x, y;
@@ -128,15 +139,6 @@ void R_Explosion_Init(void)
 			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);
@@ -148,127 +150,162 @@ void R_NewExplosion(vec3_t org)
 {
 	int i, j;
 	float dist;
-	byte noise[EXPLOSIONGRID*EXPLOSIONGRID];
-	fractalnoise(noise, EXPLOSIONGRID, 2);
+	qbyte noise[EXPLOSIONGRID*EXPLOSIONGRID];
+	fractalnoisequick(noise, EXPLOSIONGRID, 4); // adjust noise grid size according to explosion
 	for (i = 0;i < MAX_EXPLOSIONS;i++)
 	{
-		if (explosion[i].alpha <= 0.0f)
+		if (explosion[i].alpha <= 0.01f)
 		{
+			explosion[i].starttime = cl.time;
+			explosion[i].time = explosion[i].starttime - 0.1;
 			explosion[i].alpha = EXPLOSIONFADESTART;
+			VectorCopy(org, explosion[i].origin);
 			for (j = 0;j < EXPLOSIONVERTS;j++)
 			{
-				dist = noise[explosionnoiseindex[j]] * (1.0f / 512.0f) + 0.5;
-				explosion[i].vert[j][0] = explosionspherevert[j][0] * dist + org[0];
-				explosion[i].vert[j][1] = explosionspherevert[j][1] * dist + org[1];
-				explosion[i].vert[j][2] = explosionspherevert[j][2] * dist + org[2];
-				explosion[i].vertvel[j][0] = explosionspherevertvel[j][0] * dist;
-				explosion[i].vertvel[j][1] = explosionspherevertvel[j][1] * dist;
-				explosion[i].vertvel[j][2] = explosionspherevertvel[j][2] * dist;
+				// calculate start
+				VectorCopy(explosion[i].origin, explosion[i].vert[j]);
+				// calculate velocity
+				dist = noise[explosionnoiseindex[j]] * (1.0f / 255.0f) + 0.5;
+				VectorScale(explosionspherevertvel[j], dist, explosion[i].vertvel[j]);
 			}
 			break;
 		}
 	}
 }
 
-void R_DrawExplosion(explosion_t *e)
+void R_DrawExplosionCallback(const void *calldata1, int calldata2)
 {
-	int i, index, *indexlist = &explosiontris[0][0], alpha = bound(0, e->alpha * 128.0f, 128), texnum, fogtexnum;
-	float s, t;
-//	s = cl.time * 1;
-//	t = cl.time * 0.75;
-//	s -= (int) s;
-//	t -= (int) t;
-	s = 0;
-	t = 0;
-	/*
-	glColor4f(1,1,1,e->alpha);
-	glDisable(GL_TEXTURE_2D);
-//	glBindTexture(GL_TEXTURE_2D, explosiontexture);
-	glVertexPointer(3, GL_FLOAT, sizeof(float[3]), (float *) &e->vert[0][0]);
-//	glTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), (float *) &explosiontexcoords[0][0]);
-	glEnableClientState(GL_VERTEX_ARRAY);
-//	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-	glDrawElements(GL_TRIANGLES, EXPLOSIONTRIS, GL_UNSIGNED_INT, indexlist);
-//	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
-	glDisableClientState(GL_VERTEX_ARRAY);
-	glEnable(GL_TEXTURE_2D);
-	*/
-	texnum = R_GetTexture(explosiontexture);
-	fogtexnum = R_GetTexture(explosiontexturefog);
-	for (i = 0;i < EXPLOSIONTRIS;i++)
+	int i, numtriangles, numverts;
+	float *c, *v, diff[3], centerdir[3], ifog, alpha, dist;
+	rmeshstate_t m;
+	const explosion_t *e;
+	e = calldata1;
+
+	memset(&m, 0, sizeof(m));
+	m.blendfunc1 = GL_SRC_ALPHA;
+	m.blendfunc2 = GL_ONE;
+	m.tex[0] = R_GetTexture(explosiontexture);
+	R_Mesh_Matrix(&r_identitymatrix);
+	R_Mesh_State(&m);
+
+	numtriangles = EXPLOSIONTRIS;
+	numverts = EXPLOSIONVERTS;
+	R_Mesh_ResizeCheck(numverts);
+
+	for (i = 0, v = varray_vertex;i < numverts;i++, v += 4)
+	{
+		v[0] = e->vert[i][0];
+		v[1] = e->vert[i][1];
+		v[2] = e->vert[i][2];
+	}
+	memcpy(varray_texcoord[0], explosiontexcoords, numverts * sizeof(float[4]));
+	alpha = e->alpha;
+	VectorSubtract(r_origin, e->origin, centerdir);
+	VectorNormalizeFast(centerdir);
+	if (fogenabled)
+	{
+		for (i = 0, c = varray_color;i < EXPLOSIONVERTS;i++, c += 4)
+		{
+			VectorSubtract(e->vert[i], e->origin, diff);
+			VectorNormalizeFast(diff);
+			dist = (DotProduct(diff, centerdir) * 6.0f - 4.0f) * alpha;
+			if (dist > 0)
+			{
+				// use inverse fog alpha
+				VectorSubtract(e->vert[i], r_origin, diff);
+				ifog = 1 - exp(fogdensity/DotProduct(diff,diff));
+				dist = dist * ifog;
+				if (dist < 0)
+					dist = 0;
+				else
+					dist *= r_colorscale;
+			}
+			else
+				dist = 0;
+			c[0] = c[1] = c[2] = dist;
+			c[3] = 1;
+		}
+	}
+	else
 	{
-		transpolybegin(texnum, 0, fogtexnum, 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();
+		for (i = 0, c = varray_color;i < EXPLOSIONVERTS;i++, c += 4)
+		{
+			VectorSubtract(e->vert[i], e->origin, diff);
+			VectorNormalizeFast(diff);
+			dist = (DotProduct(diff, centerdir) * 6.0f - 4.0f) * alpha;
+			if (dist < 0)
+				dist = 0;
+			else
+				dist *= r_colorscale;
+			c[0] = c[1] = c[2] = dist;
+			c[3] = 1;
+		}
 	}
+	GL_UseColorArray();
+	R_Mesh_Draw(numverts, numtriangles, explosiontris[0]);
 }
 
-void R_MoveExplosion(explosion_t *e, float frametime)
+void R_MoveExplosion(explosion_t *e)
 {
 	int i;
-	vec3_t end;
-	e->alpha -= frametime * EXPLOSIONFADERATE;
+	float dot, frictionscale, end[3], impact[3], normal[3], frametime;
+
+	frametime = cl.time - e->time;
+	e->time = cl.time;
+	e->alpha = EXPLOSIONFADESTART - (cl.time - e->starttime) * EXPLOSIONFADERATE;
+	if (e->alpha <= 0.01f)
+	{
+		e->alpha = -1;
+		return;
+	}
+	frictionscale = 1 - frametime;
+	frictionscale = bound(0, frictionscale, 1);
 	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)
+			VectorScale(e->vertvel[i], frictionscale, e->vertvel[i]);
+			VectorMA(e->vert[i], frametime, e->vertvel[i], end);
+			if (r_explosionclip.integer)
 			{
-				float f, dot;
-				vec3_t impact, normal;
-				f = TraceLine(e->vert[i], end, impact, normal);
-				VectorCopy(impact, e->vert[i]);
-				if (f < 1)
+				if (CL_TraceLine(e->vert[i], end, impact, normal, 0, true, NULL) < 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], normal) * -1.125f;
+					VectorMA(e->vertvel[i], dot, normal, e->vertvel[i]);
 				}
+				VectorCopy(impact, e->vert[i]);
 			}
 			else
-			{
 				VectorCopy(end, e->vert[i]);
-			}
 		}
 	}
+	for (i = 0;i < EXPLOSIONGRID;i++)
+		VectorCopy(e->vert[i * (EXPLOSIONGRID + 1)], e->vert[i * (EXPLOSIONGRID + 1) + EXPLOSIONGRID]);
+	memcpy(e->vert[EXPLOSIONGRID * (EXPLOSIONGRID + 1)], e->vert[0], sizeof(float[3]) * (EXPLOSIONGRID + 1));
 }
 
+
 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)
-		{
-			if (explosion[i].starttime > cl.time)
-			{
-				explosion[i].alpha = 0;
-				continue;
-			}
-			R_MoveExplosion(&explosion[i], frametime);
-		}
-	}
+		if (explosion[i].alpha > 0.01f)
+			R_MoveExplosion(&explosion[i]);
 }
 
 void R_DrawExplosions(void)
 {
 	int i;
-	if (!r_drawexplosions.value)
+
+	if (!r_drawexplosions.integer)
 		return;
 	for (i = 0;i < MAX_EXPLOSIONS;i++)
-	{
-		if (explosion[i].alpha > 0.0f)
-		{
-			R_DrawExplosion(&explosion[i]);
-		}
-	}
+		if (explosion[i].alpha > 0.01f)
+			R_MeshQueue_AddTransparent(explosion[i].origin, R_DrawExplosionCallback, &explosion[i], 0);
 }
+