SimpleParticles.hpp

#pragma once

#include "Z:/cpp/SRC/lgl3/include/lgl3_includes.hpp"
#include "Z:/cpp/SRC/lgl3/include/lglShader.hpp"



/*
emitter
*/
class SimpleEmitter
{
public:
	SimpleEmitter();
	~SimpleEmitter();

	void update( const float dt );

	void draw();

private:
	struct Particle
	{
		vec3 position;
		float lifetime;
	};
	std::vector< Particle > particles;

	float positions[400];

	GLuint vertexBuffer;
	GLuint positionBuffer;
};



/*
shader
*/
class SimpleParticleShader : public lglShader
{
public:
	SimpleParticleShader();
	~SimpleParticleShader();

	void setUniformViewMatrix( const mat4& M_v );
	void setUniformProjectionMatrix( const mat4& M_p );
	void setUniformParticleSize( const float particleSize );

private:
	static const std::string VS;
	static const std::string FS;

	GLuint u_M_v;
	GLuint u_M_p;
	GLuint u_particleSize;
};



/*
controller
*/
class SimpleController
{
public:
	SimpleController();
	~SimpleController();

	void draw( const float dt , const mat4 M_p , const mat4& M_v );

private:
	SimpleParticleShader* shader;

	SimpleEmitter* emitter;
};