Lucas de Vries
110 lines
2.7 KiB
ActionScript
110 lines
2.7 KiB
ActionScript
import util.convar;
|
|
|
|
final class GasSprite {
|
|
bool draw = true;
|
|
uint baseCol = 0xffffff00;
|
|
int trueAlpha = 20;
|
|
int baseAlpha = 0;
|
|
Color resultCol;
|
|
double scale = 1.0;
|
|
double rotation = randomd(0,twopi);
|
|
double sortDist = 0;
|
|
uint index;
|
|
vec3d position;
|
|
|
|
GasSprite(const vec3d& pos, double Scale, uint col, bool structured, int baseAlpha = 0) {
|
|
position = pos;
|
|
scale = Scale * 2.0;
|
|
baseCol = col & 0xffffff00;
|
|
trueAlpha = int(col & 0xff);
|
|
index = structured ? randomi(0,23) : randomi(24,47);
|
|
this.baseAlpha = baseAlpha;
|
|
}
|
|
};
|
|
|
|
final class GalaxyGasScript {
|
|
array<GasSprite@> sprites;
|
|
array<int64> sorter;
|
|
|
|
bool dirty = true;
|
|
|
|
GalaxyGasScript(Node& node) {
|
|
node.transparent = true;
|
|
node.autoCull = false;
|
|
}
|
|
|
|
void addSprite(vec3d pos, double scale, uint color, bool structured, int baseAlpha = 0) {
|
|
sorter.insertLast( int64(sprites.length) );
|
|
sprites.insertLast( GasSprite(pos, scale, color, structured, baseAlpha) );
|
|
|
|
dirty = true;
|
|
}
|
|
|
|
void recalculateBounds(Node& node) {
|
|
vec3d p;
|
|
for(uint i = 0, cnt = sprites.length; i < cnt; ++i)
|
|
p += sprites[i].position;
|
|
p /= double(sprites.length);
|
|
node.position = p;
|
|
double maxDist = 0;
|
|
for(uint i = 0, cnt = sprites.length; i < cnt; ++i)
|
|
maxDist = max(maxDist, p.distanceTo(sprites[i].position) + sprites[i].scale);
|
|
node.scale = maxDist;
|
|
node.rebuildTransform();
|
|
}
|
|
|
|
bool preRender(Node& node) {
|
|
if(!settings::bShowGalaxyGas)
|
|
return false;
|
|
if(dirty) {
|
|
dirty = false;
|
|
if(sprites.length == 0)
|
|
return false;
|
|
recalculateBounds(node);
|
|
}
|
|
if(!node.isInView())
|
|
return false;
|
|
bool anyVisible = false;
|
|
|
|
//Update the sprite's color and decide if it needs rendered/sorted
|
|
for(uint i = 0, cnt = sprites.length; i < cnt; ++i) {
|
|
uint index = uint(sorter[i]) & 0x7fffffff;
|
|
GasSprite@ sprite = sprites[index];
|
|
|
|
double sortDist = getCameraDistance(sprite.position);
|
|
if(sortDist < 0.0) {
|
|
sprite.draw = false;
|
|
continue;
|
|
}
|
|
|
|
double fadeOut = ((sortDist / 30000.0) - 0.3);
|
|
int trueAlpha = sprite.trueAlpha;
|
|
int a = fadeOut < 1.0 ? int(double(trueAlpha) * fadeOut) : trueAlpha;
|
|
a += sprite.baseAlpha;
|
|
if(a < 4) {
|
|
sprite.draw = false;
|
|
continue;
|
|
}
|
|
|
|
sprite.resultCol = Color(sprite.baseCol | a);
|
|
sprite.draw = true;
|
|
anyVisible = true;
|
|
|
|
sorter[i] = (int64(sortDist * 100.0) << 32) | int64(index);
|
|
}
|
|
|
|
if(anyVisible)
|
|
sorter.sortAsc();
|
|
|
|
return anyVisible;
|
|
}
|
|
|
|
void render(Node& node) {
|
|
for(uint i = 0, cnt = sprites.length; i < cnt; ++i) {
|
|
GasSprite@ sprite = sprites[sorter[i] & 0x7fffffff];
|
|
if(sprite.draw)
|
|
renderBillboard(spritesheet::Nebulas, sprite.index, sprite.position, sprite.scale, sprite.rotation, sprite.resultCol);
|
|
}
|
|
}
|
|
};
|