4 // Copyright (C) 2004 Matthias Braun <matze@braunis.de>
6 // This program is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public License
8 // as published by the Free Software Foundation; either version 2
9 // of the License, or (at your option) any later version.
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 #ifndef SUPERTUX_PARTICLESYSTEM_H
21 #define SUPERTUX_PARTICLESYSTEM_H
27 * This is the base class for particle systems. It is responsible for storing a
28 * set of particles with each having an x- and y-coordinate the number of the
29 * layer where it should be drawn and a texture.
30 * The coordinate system used here is a virtual one. It would be a bad idea to
31 * populate whole levels with particles. So we're using a virtual rectangle
32 * here that is tiled onto the level when drawing. This rectangle has the size
33 * (virtual_width, virtual_height). We're using modulo on the particle
34 * coordinates, so when a particle leaves left, it'll reenter at the right
37 * Classes that implement a particle system should subclass from this class,
38 * initialize particles in the constructor and move them in the simulate
45 virtual ~ParticleSystem();
47 void draw(float scrollx, float scrolly, int layer);
49 virtual void simulate(float elapsed_time) = 0;
63 std::vector<Particle*> particles;
64 float virtual_width, virtual_height;
67 class SnowParticleSystem : public ParticleSystem
71 virtual ~SnowParticleSystem();
73 virtual void simulate(float elapsed_time);
76 class SnowParticle : public Particle
82 Surface* snowimages[3];
85 class CloudParticleSystem : public ParticleSystem
88 CloudParticleSystem();
89 virtual ~CloudParticleSystem();
91 virtual void simulate(float elapsed_time);
94 class CloudParticle : public Particle