Open source Star Ruler 2 source code!

source/game/scene/line_trail_node.h

@@ -0,0 +1,102 @@
+#include "node.h"
+#include "color.h"
+#include "render/render_state.h"
+#include "threads.h"
+#include "design/projectiles.h"
+
+#include <unordered_map>
+
+struct MissileTrailMats {
+	const render::RenderState* sprite, *trail;
+
+	bool operator==(const MissileTrailMats& other) const {
+		return sprite == other.sprite && trail == other.trail;
+	}
+};
+
+namespace std {
+template<>
+struct hash<MissileTrailMats> {
+	size_t operator()(const MissileTrailMats& trail) const {
+		return (size_t)trail.sprite ^ (size_t)trail.trail;
+	};
+};
+};
+
+namespace scene {
+
+#define LINE_POS_COUNT 16
+
+class LineTrailNode : public Node {
+	//Stored previous positions so a trail can be rendered
+	vec3d prevPositions[LINE_POS_COUNT];
+	unsigned storedPositions;
+	unsigned firstIndex;
+
+	//The number of seconds since a position has been stored
+	double stored_s;
+
+	//Number of steps to process (higher is lower quality)
+	unsigned qualitySteps;
+
+	const render::RenderState& mat;
+
+public:
+	//The number of seconds the trail lasts
+	double lineLen_s;
+	Color startCol, endCol;
+
+	LineTrailNode(const render::RenderState& material);
+
+	bool preRender(render::RenderDriver& driver);
+	void render(render::RenderDriver& driver);
+};
+
+class ProjectileBatch : public Node {
+public:
+	struct ProjEffect {
+		threads::SharedData<bool>* kill;
+		vec3d pos;
+		vec3f dir;
+		Color start, end;
+		float length, life, fadeStart, speed;
+		bool line;
+	};
+private:
+	std::unordered_map<const render::RenderState*,std::vector<ProjEffect>*> projectiles;
+public:
+	ProjectileBatch();
+	~ProjectileBatch();
+
+	void registerProj(const render::RenderState& mat, ProjEffect& eff);
+	
+	bool preRender(render::RenderDriver& driver);
+	void render(render::RenderDriver& driver);
+};
+
+
+class MissileBatch : public Node {
+public:
+	struct MissileTrail {
+		threads::SharedData<MissileData>* track;
+		double lastUpdate;
+		vec3d trail[LINE_POS_COUNT];
+		vec3d pos;
+		float length, size;
+		Color start, end, color;
+		float lineProgress, startProgress;
+		unsigned lineStart, lineCount;
+	};
+private:
+	std::unordered_map<MissileTrailMats,std::vector<MissileTrail>*> missiles;
+public:
+	MissileBatch();
+	~MissileBatch();
+
+	void registerProj(const render::RenderState& mat, const render::RenderState& trail, MissileTrail& eff);
+	
+	bool preRender(render::RenderDriver& driver);
+	void render(render::RenderDriver& driver);
+};
+
+};