summaryrefslogtreecommitdiff
path: root/src/particleemitter.h
blob: 18af2dc27df872df3f486c9dc5ab211af981faa2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/*
 *  The Mana World
 *  Copyright (C) 2006  The Mana World Development Team
 *
 *  This file is part of The Mana World.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef PARTICLEEMITTER_H
#define PARTICLEEMITTER_H

#include <list>

#include "utils/xml.h"

#include "particleemitterprop.h"

#include "resources/animation.h"

class Image;
class Map;
class Particle;

/**
 * Every Particle can have one or more particle emitters that create new
 * particles when they are updated
 */
class ParticleEmitter
{
    public:
        /**
         * Constructor.
         */
        ParticleEmitter(xmlNodePtr emitterNode,  Particle *target, Map *map, int rotation = 0);

        /**
         * Copy Constructor (necessary for reference counting of particle images)
         */
        ParticleEmitter(const ParticleEmitter &o);

        /**
         * Assignment operator that calls the copy constructor
         */
        ParticleEmitter & operator=(const ParticleEmitter &o);

        /**
         * Destructor.
         */
        ~ParticleEmitter();

        /**
         * Spawns new particles
         * @return: a list of created particles
         */
        std::list<Particle *> createParticles(int tick);

        /**
         * Sets the target of the particles that are created
         */
        void setTarget(Particle *target)
        { mParticleTarget = target; };

    private:
        template <typename T> ParticleEmitterProp<T> readParticleEmitterProp(xmlNodePtr propertyNode, T def);

        /**
         * initial position of particles:
         */
        ParticleEmitterProp<float> mParticlePosX, mParticlePosY, mParticlePosZ;

        /**
         * initial vector of particles:
         */
        ParticleEmitterProp<float> mParticleAngleHorizontal, mParticleAngleVertical;

        /**
         * Initial velocity of particles
         */
        ParticleEmitterProp<float> mParticlePower;

        /*
         * Vector changing of particles:
         */
        ParticleEmitterProp<float> mParticleGravity;
        ParticleEmitterProp<int> mParticleRandomness;
        ParticleEmitterProp<float> mParticleBounce;
        bool mParticleFollow;

        /*
         * Properties of targeting particles:
         */
        Particle *mParticleTarget;
        ParticleEmitterProp<float> mParticleAcceleration;
        ParticleEmitterProp<float> mParticleDieDistance;
        ParticleEmitterProp<float> mParticleMomentum;

        /*
         * Behavior over time of the particles:
         */
        ParticleEmitterProp<int> mParticleLifetime;
        ParticleEmitterProp<int> mParticleFadeOut;
        ParticleEmitterProp<int> mParticleFadeIn;

        Map *mMap;             /**< Map the particles are spawned on */

        ParticleEmitterProp<int> mOutput;   /**< Number of particles spawned per update */
        ParticleEmitterProp<int> mOutputPause; /**< Pause in frames between two spawns */
        int mOutputPauseLeft;

        /*
         * Graphical representation of the particle
         */
        Image *mParticleImage; /**< Particle image, if used */
        Animation mParticleAnimation; /**< Filename of particle animation file */
        Animation mParticleRotation; /**< Filename of particle rotation file */
        ParticleEmitterProp<float> mParticleAlpha; /**< Opacity of the graphical representation of the particles */

        /** List of emitters the spawned particles are equipped with */
        std::list<ParticleEmitter> mParticleChildEmitters;
};
#endif