#ifndef _simulation_h_#define _simulation_h_ typedef struct {	float x, y, xVel, yVel;	int r, g, b;	float a;	float angle;} Particle; void Sim_Init(int width, int height, int radius, int dt);void Sim_Quit(void);void Sim_Resize(int width, int height);void Sim_Randomize(Particle *particles, int count);int Sim_Update(Particle *particles, int count, double deltaTime);void Sim_UpdateDrag(int x, int y);void Sim_BeginDrag(Particle *particles, int count, int x, int y);void Sim_EndDrag(void); #endif