include/partmang.h

   1 // -----------------------------------------------
   2 // partmang.h
   3 // -----------------------------------------------
   4 // Particle manager, to control particles in the game
   5 // Also, implementation of base particle
   6 // -----------------------------------------------
   7 // Developed By Kronoman - Copyright (c) 2004
   8 // In loving memory of my father
   9 // -----------------------------------------------
  10
  11 #ifndef PARTMANG_H
  12 #define PARTMANG_H
  13
  14 #include <allegro.h>
  15
  16 #include <list> // STL container for the particles (yeah, sue me, I'm not doing my own linked list :P)
  17 #include <iterator>
  18 using namespace std;
  19
  20 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  21 // The base particle, a dot
  22 // This particle must be used as base
  23 // for making other types of particles, using
  24 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  25 class CParticleManager; // I need this here, so my particle 'knows' the manager and can send messages to him :D
  26
  27 class CBaseParticle
  28 {
  29         public:
  30                 CBaseParticle();
  31                 CBaseParticle(float x1, float y1, float dx1, float dy1, int color1, int life1);
  32                 virtual ~CBaseParticle();
  33
  34                 // the update logic receives the manager, so the particle can add new particles, if desired
  35                 virtual bool update_logic(CParticleManager &particle_manager); // updates particle's logic, must return TRUE if particle is dead (particle WILL be _deleted_ from memory by manager if dead)
  36
  37                 virtual void render_particle(BITMAP *bmp, int xd, int yd); // renders particle on bmp, displaced by x,y
  38
  39         // all particle properties are public, for easy modification (yeah, I know, poor OO design, don't bug me)
  40                 float x, y, dx, dy; // particle x,y, and direction (acceleration in x,y)
  41                 int color; // particle color (in Allegro's makecol format)
  42                 int life; // remaining life of particle
  43 };
  44
  45 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  46 // The particle manager
  47 // This handles a bunch of particles
  48 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  49 class CParticleManager
  50 {
  51         public:
  52                 CParticleManager();
  53                 ~CParticleManager();
  54
  55                 void nuke_particle_list(); // this will free all memory used by particles, and particles itself.
  56
  57                 void add_particle(CBaseParticle *node); // adds a particle to manager (the particle WILL be nuked automatically when the manager object gets deleted)
  58
  59                 void update_logic(); // updates logic of all particles
  60
  61                 void render(BITMAP *bmp, int x, int y); // renders particles on bmp, displaced by x,y
  62
  63                 // some public data
  64                 float add_x, add_y; // displace particles on x, y, this can be used to simulate wind/gravity effects (is add to x,y of all particles)
  65                 float add_dx, add_dy; // this is add to dx,dy of all particles (can be used to simulate acceleration, etc)
  66
  67         private:
  68                 list <CBaseParticle *> particle_list; // storage for pointers to particles that I must manage
  69 };
  70
  71 #endif