void CSmokeTrailProjectile::Draw()
{
inArray = true;
float age = gs->frameNum + globalRendering->timeOffset - creationTime;
va->EnlargeArrays(8 * 4, 0, VA_SIZE_TC);
if (drawTrail) {
const float3 dif1 = (pos1 - camera->pos).ANormalize();
const float3 dif2 = (pos2 - camera->pos).ANormalize();
const float3 odir1 = (dif1.cross(dir1)).ANormalize();
const float3 odir2 = (dif2.cross(dir2)).ANormalize();
unsigned char col[4];
float a1 = (1 - (float) age / lifeTime) * 255;
if (lastSegment) {
a1 = 0;
}
a1 *= 0.7f + fabs(dif1.dot(dir1));
float alpha = std::min(255.f, std::max(0.f, a1));
col[0] = (unsigned char) (color * alpha);
col[1] = (unsigned char) (color * alpha);
col[2] = (unsigned char) (color * alpha);
col[3] = (unsigned char) alpha;
unsigned char col2[4];
float a2 = (1 - (float)(age + 8) / lifeTime) * 255;
if (firstSegment) {
a2 = 0;
}
a2 *= 0.7f + fabs(dif2.dot(dir2));
alpha = std::min(255.f, std::max(0.0f, a2));
col2[0] = (unsigned char) (color * alpha);
col2[1] = (unsigned char) (color * alpha);
col2[2] = (unsigned char) (color * alpha);
col2[3] = (unsigned char) alpha;
float size = 1 + ( age * (1.0f / lifeTime)) * orgSize;
float size2 = 1 + ((age + 8) * (1.0f / lifeTime)) * orgSize;
if (drawSegmented) {
const float3 dif3 = (midpos - camera->pos).ANormalize();
const float3 odir3 = (dif3.cross(middir)).ANormalize();
float size3 = 0.2f + ((age + 4) * (1.0f / lifeTime)) * orgSize;
unsigned char col3[4];
float a2 = (1 - (float)(age + 4) / lifeTime) * 255;
a2 *= 0.7f + fabs(dif3.dot(middir));
alpha = std::min(255.0f, std::max(0.0f, a2));
col3[0] = (unsigned char) (color * alpha);
col3[1] = (unsigned char) (color * alpha);
col3[2] = (unsigned char) (color * alpha);
col3[3] = (unsigned char) alpha;
const float midtexx = texture->xstart + ((texture->xend - texture->xstart) * 0.5f);
va->AddVertexQTC(pos1 - (odir1 * size), texture->xstart, texture->ystart, col);
va->AddVertexQTC(pos1 + (odir1 * size), texture->xstart, texture->yend, col);
va->AddVertexQTC(midpos + (odir3 * size3), midtexx, texture->yend, col3);
va->AddVertexQTC(midpos - (odir3 * size3), midtexx, texture->ystart, col3);
va->AddVertexQTC(midpos - (odir3 * size3), midtexx, texture->ystart, col3);
va->AddVertexQTC(midpos + (odir3 * size3), midtexx, texture->yend, col3);
va->AddVertexQTC(pos2 + (odir2 * size2), texture->xend, texture->yend, col2);
va->AddVertexQTC(pos2 - (odir2 * size2), texture->xend, texture->ystart, col2);
} else {
va->AddVertexQTC(pos1 - (odir1 * size), texture->xstart, texture->ystart, col);
va->AddVertexQTC(pos1 + (odir1 * size), texture->xstart, texture->yend, col);
va->AddVertexQTC(pos2 + (odir2 * size2), texture->xend, texture->yend, col2);
va->AddVertexQTC(pos2 - (odir2 * size2), texture->xend, texture->ystart, col2);
}
} else { //draw as particles
unsigned char col[4];
for (int a = 0; a < 8; ++a) {
const float a1 = 1 - (float)(age + a) / lifeTime;
const float alpha = std::min(255.0f, std::max(0.0f, a1 * 255));
col[0] = (unsigned char) (color * alpha);
col[1] = (unsigned char) (color * alpha);
col[2] = (unsigned char) (color * alpha);
col[3] = (unsigned char) alpha;
float size = ((0.2f + (age + a) * (1.0f / lifeTime)) * orgSize) * 1.2f;
// const float3 pos = CalcBeizer(a / 8.0f, pos1, dirpos1, dirpos2, pos2);
#define st projectileDrawer->smoketex[0]
va->AddVertexQTC(pos1 + ( camera->up + camera->right) * size, st->xstart, st->ystart, col);
va->AddVertexQTC(pos1 + ( camera->up - camera->right) * size, st->xend, st->ystart, col);
va->AddVertexQTC(pos1 + (-camera->up - camera->right) * size, st->xend, st->ystart, col);
va->AddVertexQTC(pos1 + (-camera->up + camera->right) * size, st->xstart, st->ystart, col);
#undef st
}
}
CProjectile* callbacker = GML::SimEnabled() ? *(CProjectile * volatile *)&drawCallbacker : drawCallbacker;
if (callbacker) {
callbacker->DrawCallback();
}
}
