Open source Star Ruler 2 source code!

2018-07-17 14:15:37 +02:00
commit cc307720ff
4342 changed files with 2365070 additions and 0 deletions
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+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);
+		}
+	}
+};