X-Git-Url: http://git.xonotic.org/?a=blobdiff_plain;f=r_explosion.c;h=b5654092e18eb945874d5ed0d9b96387cfd1ead3;hb=a1b5164ed7ebac0ec9893577c9d95972471d69e4;hp=8061b6062acd65b3fd929b014be899a695be6def;hpb=45982a9894c5bff60ff494a0f82865ec267d52f7;p=xonotic%2Fdarkplaces.git

diff --git a/r_explosion.c b/r_explosion.c
index 8061b606..b5654092 100644
--- a/r_explosion.c
+++ b/r_explosion.c
@@ -19,45 +19,28 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
 #include "quakedef.h"
+#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 (20.0f)
+#define EXPLOSIONTRIS (EXPLOSIONGRID*EXPLOSIONGRID*2)
 #define EXPLOSIONSTARTVELOCITY (256.0f)
 #define EXPLOSIONFADESTART (1.5f)
-#define EXPLOSIONFADERATE (4.5f)
-/*
-#define MAX_EXPLOSIONGAS (MAX_EXPLOSIONS * EXPLOSIONGAS)
-#define EXPLOSIONGAS 8
-#define EXPLOSIONGASSTARTRADIUS (15.0f)
-#define EXPLOSIONGASSTARTVELOCITY (50.0f)
-#define GASDENSITY_SCALER (32768.0f / EXPLOSIONGAS)
-#define GASFADERATE (GASDENSITY_SCALER * EXPLOSIONGAS * 2)
-
-typedef struct explosiongas_s
-{
-	float pressure;
-	vec3_t origin;
-	vec3_t velocity;
-}
-explosiongas_t;
+#define EXPLOSIONFADERATE (3.0f)
 
-explosiongas_t explosiongas[MAX_EXPLOSIONGAS];
-*/
-
-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];
 }
@@ -68,30 +51,16 @@ 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], noise3[128][128], data[128][128][4];
+	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);
@@ -111,21 +80,45 @@ void r_explosion_start(void)
 			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)
 {
 	memset(explosion, 0, sizeof(explosion));
-//	memset(explosiongas, 0, sizeof(explosiongas));
+}
+
+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)
@@ -146,15 +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);
@@ -165,236 +149,163 @@ void R_Explosion_Init(void)
 void R_NewExplosion(vec3_t org)
 {
 	int i, j;
-	float dist, v[3];
-	byte noise[EXPLOSIONGRID*EXPLOSIONGRID];
-	fractalnoise(noise, EXPLOSIONGRID, 4);
+	float dist;
+	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 / 256.0f) + 0.5;
-				VectorMA(org, dist, explosionspherevert[j], v);
-				TraceLine(org, v, explosion[i].vert[j], NULL, 0);
+				// 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;
 		}
 	}
+}
 
-	/*
-	i = 0;
-	j = EXPLOSIONGAS;
-	while (i < MAX_EXPLOSIONGAS && j > 0)
+void R_DrawExplosionCallback(const void *calldata1, int calldata2)
+{
+	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)
 	{
-		while (explosiongas[i].pressure > 0)
+		for (i = 0, c = varray_color;i < EXPLOSIONVERTS;i++, c += 4)
 		{
-			i++;
-			if (i >= MAX_EXPLOSIONGAS)
-				return;
+			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;
 		}
-		VectorRandom(v);
-		VectorMA(org, EXPLOSIONGASSTARTRADIUS, v, v);
-		TraceLine(org, v, explosiongas[i].origin, NULL, 0);
-		VectorRandom(v);
-		VectorScale(v, EXPLOSIONGASSTARTVELOCITY, explosiongas[i].velocity);
-		explosiongas[i].pressure = j * GASDENSITY_SCALER;
-		j--;
 	}
-	*/
-}
-
-void R_DrawExplosion(explosion_t *e)
-{
-	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++)
+	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, /*explosiongas_t **list, explosiongas_t **listend, */float frametime)
+void R_MoveExplosion(explosion_t *e)
 {
 	int i;
-	vec3_t end;
-	vec_t frictionscale;
-	/*
-	vec3_t diff;
-	vec_t dist;
-	explosiongas_t **l;
-	*/
-	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, 0);
-				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) * -1.125f;
-					e->vertvel[i][0] += normal[0] * dot;
-					e->vertvel[i][1] += normal[1] * dot;
-					e->vertvel[i][2] += normal[2] * dot;
+					VectorMA(e->vertvel[i], dot, normal, e->vertvel[i]);
 				}
+				VectorCopy(impact, e->vert[i]);
 			}
 			else
-			{
 				VectorCopy(end, e->vert[i]);
-			}
-			e->vertvel[i][2] += sv_gravity.value * frametime * -0.25f;
-			VectorScale(e->vertvel[i], frictionscale, e->vertvel[i]);
 		}
-		/*
-		for (l = list;l < listend;l++)
-		{
-			VectorSubtract(e->vert[i], (*l)->origin, diff);
-			dist = DotProduct(diff, diff);
-			if (dist < 4096 && dist >= 1)
-			{
-				dist = (*l)->pressure * frametime / dist;
-				VectorMA(e->vertvel[i], dist, diff, e->vertvel[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_MoveExplosionGas(explosiongas_t *e, explosiongas_t **list, explosiongas_t **listend, float frametime)
-{
-	vec3_t end, diff;
-	vec_t dist, frictionscale;
-	explosiongas_t **l;
-	frictionscale = 1 - frametime;
-	frictionscale = bound(0, frictionscale, 1);
-	if (e->velocity[0] || e->velocity[1] || e->velocity[2])
-	{
-		end[0] = e->origin[0] + frametime * e->velocity[0];
-		end[1] = e->origin[1] + frametime * e->velocity[1];
-		end[2] = e->origin[2] + frametime * e->velocity[2];
-		if (r_explosionclip.value)
-		{
-			float f, dot;
-			vec3_t impact, normal;
-			f = TraceLine(e->origin, end, impact, normal, 0);
-			VectorCopy(impact, e->origin);
-			if (f < 1)
-			{
-				// clip velocity against the wall
-				dot = DotProduct(e->velocity, normal) * -1.3f;
-				e->velocity[0] += normal[0] * dot;
-				e->velocity[1] += normal[1] * dot;
-				e->velocity[2] += normal[2] * dot;
-			}
-		}
-		else
-		{
-			VectorCopy(end, e->origin);
-		}
-		e->velocity[2] += sv_gravity.value * frametime;
-		VectorScale(e->velocity, frictionscale, e->velocity);
-	}
-	for (l = list;l < listend;l++)
-	{
-		if (*l != e)
-		{
-			VectorSubtract(e->origin, (*l)->origin, diff);
-			dist = DotProduct(diff, diff);
-			if (dist < 4096 && dist >= 1)
-			{
-				dist = (*l)->pressure * frametime / dist;
-				VectorMA(e->velocity, dist, diff, e->velocity);
-			}
-		}
-	}
-}
-*/
 
 void R_MoveExplosions(void)
 {
 	int i;
 	float frametime;
-//	explosiongas_t *gaslist[MAX_EXPLOSIONGAS], **l, **end;
+
 	frametime = cl.time - cl.oldtime;
-	/*
-	l = &gaslist[0];
-	for (i = 0;i < MAX_EXPLOSIONGAS;i++)
-	{
-		if (explosiongas[i].pressure > 0)
-		{
-			explosiongas[i].pressure -= frametime * GASFADERATE;
-			if (explosiongas[i].pressure > 0)
-				*l++ = &explosiongas[i];
-		}
-	}
-	end = l;
-	for (l = gaslist;l < end;l++)
-		R_MoveExplosionGas(*l, gaslist, end, frametime);
-	*/
 
 	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], /*gaslist, end, */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);
 }
+