Particle.h

/*      Particle.h
 *      
 *      Floppyright 2010 Tuna <tuna@supertunaman.com>
 *      
 *      A particle system for the Arduino and any given graphic LCD.
 *      
 */

#ifndef PARTICLE_H
#define PARTICLE_H

#include <stdint.h>

#define MAX_PARTICLES 250 //This is (75) 600 bytes. Think before changing this.
#define SCREEN_WIDTH 160
#define SCREEN_HEIGHT 128

/* The Particle class has four members; x and y coordinates, and then
 * x and y velocity. The velocity is a number between -25 and 25, which is 
 * divided by 5 as an integer to come out to some number between -5 and 
 * 5. This is so that the particle will actually slow to a halt over a 
 * longer period of time as the velocity is added to or subtracted from, 
 * one moveParticles() at a time. */
class Particle {
    public:
        float pX;
        float pY;
        uint8_t w;
        uint8_t h;
        int8_t weight;
        float velX;
        float velY;
        uint16_t color;
        uint16_t color2;
        int16_t life;
};

class Particles {
    public:
        Particles();
        ~Particles();
        void moveParticles(int cameraX = 0, int cameraY = 0);
        void createExplosion(float x, float y, int num_parts = 8, float xspeed = 1, float yspeed = 1, uint16_t color = 0xFFFF, uint16_t color2 = 0xFFFF, int life = -1);
        void createDirectionalExplosion(float x, float y, int num_parts = 8, uint8_t size = 1, uint8_t direction = 0xFF, uint16_t color = 0xFFFF, uint16_t color2 = 0xFFFF, int life = -1);
        void createBodyExplosion(float x, float y, int num_parts = 8, uint16_t color = 0xFFFF, uint16_t color2 = 0xFFFF, int life = -1);

        void createLandingDust(float x, float y, int num_parts = 8, float xspeed = 1, float yspeed = 1, int life = -1);
        int getActiveParticles();
        void clearParticles();
        Particle particles[MAX_PARTICLES];
    
    private:
        void addParticle(Particle *particle);
        void delParticle(int index);
        int activeParticles;
};

#endif