- m.transparent = true;
- m.blendfunc1 = GL_SRC_ALPHA;
- m.blendfunc2 = GL_ONE; //_MINUS_SRC_ALPHA;
- m.numtriangles = EXPLOSIONTRIS;
- m.index = &explosiontris[0][0];
- m.numverts = EXPLOSIONVERTS;
- m.vertex = &e->vert[0][0];
- m.vertexstep = sizeof(float[3]);
- alpha = e->alpha;
- if (alpha > 1)
- alpha = 1;
- m.cr = 1;
- m.cg = 1;
- m.cb = 1;
- m.ca = alpha;
- m.color = &c[0][0];
- m.colorstep = sizeof(float[4]);
- centerdist = DotProduct(e->origin, vpn);
- size = 0;
- for (i = 0;i < EXPLOSIONVERTS;i++)
- {
- //VectorSubtract(e->vert[i], e->origin, diff);
- //dist = DotProduct(diff, diff);
- dist = DotProduct(e->vert[i], vpn) - centerdist;
- if (size < dist)
- size = dist;
- }
- //scale = -1.0f / sqrt(size / EXPLOSIONVERTS);
- //scale = -1.0f / sqrt(size);
- scale = -1.0f / size;
- if (fogenabled)
- {
- for (i = 0;i < EXPLOSIONVERTS;i++)
- {
- dist = DotProduct(e->vert[i], vpn) - centerdist;
- // use inverse fog alpha as color
- VectorSubtract(e->vert[i], r_origin, diff);
- ifog = 1 - exp(fogdensity/DotProduct(diff,diff));
- if (ifog < 0)
- ifog = 0;
- c[i][0] = ifog;
- c[i][1] = ifog;
- c[i][2] = ifog;
- //c[i][3] = min(dist * scale, 1) * alpha;
- c[i][3] = dist * scale * alpha;
- }
- }
- else
- {
- for (i = 0;i < EXPLOSIONVERTS;i++)
- {
- dist = DotProduct(e->vert[i], vpn) - centerdist;
- c[i][0] = 1;
- c[i][1] = 1;
- c[i][2] = 1;
- //c[i][3] = min(dist * scale, 1) * alpha;
- c[i][3] = dist * scale * alpha;
- }
- }
- /*
- if (fogenabled)
- {
- m.color = &c[0][0];
- m.colorstep = sizeof(float[4]);
- for (i = 0;i < EXPLOSIONVERTS;i++)
- {
- // use inverse fog alpha as color
- VectorSubtract(e->vert[i], r_origin, diff);
- ifog = 1 - exp(fogdensity/DotProduct(diff,diff));
- if (ifog < 0)
- ifog = 0;
- c[i][0] = ifog;
- c[i][1] = ifog;
- c[i][2] = ifog;
- c[i][3] = alpha;
- }
- }
- */