nuclear@0: #ifndef _PARTICLES_H_
nuclear@0: #define _PARTICLES_H_
nuclear@0: 
nuclear@0: #include <list>
nuclear@0: #include "n3dmath.h"
nuclear@0: #include "3dgeom.h"
nuclear@0: #include "objects.h"
nuclear@0: 
nuclear@0: enum BlendingFactor;
nuclear@0: 
nuclear@0: class Particle {
nuclear@0: public:
nuclear@0: 	Vector3 pos;
nuclear@0: 	Vector3 vel;
nuclear@0: 	unsigned int life;
nuclear@0: 
nuclear@0: 	Particle(int life=0);
nuclear@0: 	Particle(const Vector3 &pos, int life=0);
nuclear@0: 	Particle(const Vector3 &pos, const Vector3 &vel, int life=0);
nuclear@0: 
nuclear@0: 	void Update(const Vector3 &forces, float friction=0);
nuclear@0: };
nuclear@0: 
nuclear@0: class ParticleSystem {
nuclear@0: private:
nuclear@0: 	GraphicsContext *gc;
nuclear@0: 	bool FixedUpdateRate;
nuclear@0: 	float UpdateRate;
nuclear@0: 	float LastUpdate;
nuclear@0: 
nuclear@0: 	BlendingFactor SourceBlend, DestBlend;
nuclear@0: 
nuclear@0: 	Vector3 pos, prevpos;			// position of the emmiter (world space)
nuclear@0: 	Vector3 ShootDirection;			// an initial velocity vector for the particles
nuclear@0: 	std::list<Particle> particles;	// a list of particles
nuclear@0: 	Vertex pquad[4];				// the basic particle quad vertices
nuclear@0: 	Triangle ptris[2];				// the basic particle quad triangles
nuclear@0: 	float size;						// size of the particles
nuclear@0: 	float friction;					// friction impeding particle movement
nuclear@0: 	int SpawnRate;					// rate of particle generation
nuclear@0: 	float SpawnRadius;				// spawning radius around the emmiter
nuclear@0: 	float GravForce;				// Gravitual force
nuclear@0: 	float DispRads;
nuclear@0: 	int life;						// particle life
nuclear@0: 	bool EmmiterAffectsParticleTrajectory;	// ehm ... yeah
nuclear@0: 	float SpawnDiffDispersion;
nuclear@0: 	int SpawnRateChange;			// if 0 then spawn rate constant
nuclear@0: 
nuclear@0: 	float StartRed, StartGreen, StartBlue;
nuclear@0: 	float EndRed, EndGreen, EndBlue;
nuclear@0: 
nuclear@0: 	int VertsToRender, TrianglesToRender;
nuclear@0: 	int vbsize, ibsize, maxprimitives;
nuclear@0: 	Texture *texture;				// the particles' texture
nuclear@0: 	Object *obj;					// the particles' mesh object (if present don't render quads)
nuclear@0: 	Vertex *varray;					// secondary vertex array (ease of development)
nuclear@0: 	Triangle *tarray;				// the triangles
nuclear@0: 
nuclear@0: 	int VertexCount, IndexCount, TriCount, ParticleCount;
nuclear@0: 
nuclear@0: public:
nuclear@0: 	Matrix4x4 Translation, OrbitRot;
nuclear@0: 
nuclear@0: 	ParticleSystem(GraphicsContext *gc);
nuclear@0: 	~ParticleSystem();
nuclear@0: 
nuclear@0: 	void SetGraphicsContext(GraphicsContext *gc);
nuclear@0: 	void SetParticleSize(float psize);
nuclear@0: 	void SetParticleLife(int life);
nuclear@0: 	void SetFriction(float friction);
nuclear@0: 	void SetSpawnRate(float spawnrate);
nuclear@0: 	void SetSpawnRadius(float radius);
nuclear@0: 	void SetTexture(Texture *texture);
nuclear@0: 	void SetObject(Object *obj);
nuclear@0: 	void SetPosition(const Vector3 &pos);
nuclear@0: 	void SetShootDirection(const Vector3 &dir);
nuclear@0: 	void SetGravitualForce(float grav);
nuclear@0: 	void SetEmmiterDependence(bool dep);
nuclear@0: 	void SetMaxDispersionAngle(float maxdisp);
nuclear@0: 	void SetInitialColor(float r, float g, float b);
nuclear@0: 	void SetDeathColor(float r, float g, float b);
nuclear@0: 	void SetBlendingMode(BlendingFactor src, BlendingFactor dest);
nuclear@0: 	void SetSpawningDifferenceDispersion(float val);
nuclear@0: 	void SetSpawnRateChange(int change);
nuclear@0: 
nuclear@0: 	void Translate(float x, float y, float z);
nuclear@0: 	void Rotate(float x, float y, float z);
nuclear@0: 	void Rotate(const Vector3 &axis, float angle);
nuclear@0: 	void ResetTranslation();
nuclear@0: 	void ResetRotation();	
nuclear@0: 
nuclear@0: 	int CountParticles();
nuclear@0: 			
nuclear@0: 	void Update(float t = 0.0f);
nuclear@0: 	void Render();
nuclear@0: };
nuclear@0: 	
nuclear@0: 
nuclear@0: #endif	// _PARTICLES_H_