include/particle.h

   1 /*
   2   Pacman Arena
   3   Copyright (C) 2003 Nuno Subtil
   4
   5   This program is free software; you can redistribute it and/or
   6   modify it under the terms of the GNU General Public License
   7   as published by the Free Software Foundation; either version 2
   8   of the License, or (at your option) any later version.
   9
  10   This program is distributed in the hope that it will be useful,
  11   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13   GNU General Public License for more details.
  14
  15   You should have received a copy of the GNU General Public License
  16   along with this program; if not, write to the Free Software
  17   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18 */
  19
  20 /* $Id: particle.h,v 1.2 2003/11/22 17:32:10 nsubtil Exp $ */
  21
  22 #ifndef _PARTICLE_H
  23 #define _PARTICLE_H
  24
  25 #define PARTICLE_STATE_DEAD 0
  26 #define PARTICLE_STATE_ACTIVE 1
  27
  28 struct particle
  29 {
  30         /* particle state (dead, active, ...) */
  31         int state;
  32         /* time */
  33         float time;
  34         /* 3D world-space position */
  35         float position[3];
  36         /* constant direction vector */
  37         float direction[3];
  38         /* particle color */
  39         float color[3];
  40         /* speed */
  41         float speed;
  42         /* gravity */
  43         float gravity;
  44 };
  45
  46 struct particle_src
  47 {
  48         /* number of particle structures */
  49         int n_particles;
  50         /* particles */
  51         struct particle *particles;
  52
  53         /* life of each particle */
  54         float particle_life;
  55         /* fade time of each particle */
  56         float particle_fade;
  57         /* particle generation rate */
  58         float particle_rate;
  59         /* last generation time */
  60         float last_particle_time;
  61         /* particle size */
  62         float particle_size;
  63
  64         /* fountain position */
  65         float position[3];
  66         /* fountain speed vector */
  67         float src_speed[3];
  68         /* fountain direction */
  69         float direction[3];
  70         /* maximum direction spread */
  71         float spread;
  72         /* speed */
  73         float speed;
  74         /* maximum speed variation */
  75         float speed_spread;
  76         /* fountain gravity */
  77         float gravity;
  78         /* particle colors */
  79         float color[3];
  80
  81         /* light source for particle */
  82         struct light *light_src;
  83 };
  84
  85 struct particle_src *particle_new_src(float life, float fade, float rate, float size,
  86                                       float position[3], float direction[3], float src_speed[3],
  87                                       float spread, float speed, float speed_spread,
  88                                       float gravity, float color[4]);
  89 int particle_add(struct particle_src *src);
  90 void particle_src_update(struct game *game, struct particle_src *src, float delta);
  91 void particle_update(struct game *game, struct particle_src *src, int particle_no, float delta);
  92 void particle_free_src(struct particle_src *src);
  93 int particle_src_all_dead(struct particle_src *src);
  94 void particle_src_explode(struct particle_src *src, int num_particles_explosion, float max_speed);
  95 #endif