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source: orxonox.OLD/branches/water/src/lib/particles/dot_emitter.cc @ 8063

Last change on this file since 8063 was 7661, checked in by bensch, 19 years ago

orxonox/trunk: merged the QT_GUI back to the trunk
merged with command:
svn merge https://svn.orxonox.net/orxonox/branches/qt_gui . -r7607:HEAD

absolutely no conflicts :)

File size: 2.3 KB
Line 
1/*
2   orxonox - the future of 3D-vertical-scrollers
3
4   Copyright (C) 2004 orx
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10
11   ### File Specific:
12   main-programmer: Benjamin Grauer
13   co-programmer: Patrick Boenzli
14*/
15
16#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_GRAPHICS
17
18#include "dot_emitter.h"
19
20#include "particle_system.h"
21
22#include "util/loading/load_param.h"
23#include "util/loading/factory.h"
24#include "debug.h"
25
26using namespace std;
27
28
29CREATE_FACTORY(DotEmitter, CL_DOT_EMITTER);
30
31/**
32 *  standard constructor
33*/
34DotEmitter::DotEmitter(float emissionRate, float velocity, float angle)
35    : ParticleEmitter( emissionRate, velocity, angle)
36{
37  this->init();
38}
39
40/**
41 *  constructs and loads a DotEmitter from a XML-element
42 * @param root the XML-element to load from
43*/
44DotEmitter::DotEmitter(const TiXmlElement* root)
45    : ParticleEmitter()
46{
47  this->init();
48
49  if (root != NULL)
50    this->loadParams(root);
51}
52
53/**
54 *  standard destructor
55
56   removes the EmitterSystem from the ParticleEngine
57*/
58DotEmitter::~DotEmitter ()
59{
60  this->setSystem(NULL);
61}
62
63/**
64  @brief initializes default values of a ParitcleEmitter
65*/
66void DotEmitter::init()
67{
68  this->setClassID(CL_DOT_EMITTER, "DotEmitter");
69}
70
71void DotEmitter::emitParticles(unsigned int count) const
72{
73  Vector inheritVelocity = this->getVelocity() * this->inheritSpeed;
74
75  for (unsigned int i = 0; i < count; i++)
76  {
77    Vector randDir = Vector(rand()-RAND_MAX/2, rand()-RAND_MAX/2, rand()-RAND_MAX/2);
78    randDir.normalize();
79    randDir = (Quaternion(angle + randomAngle *((float)rand()/RAND_MAX -.5), randDir)).apply(this->getAbsDirX());
80    Vector velocityV = randDir.getNormalized()*this->velocity + inheritVelocity;
81
82    // ROTATIONAL CALCULATION (this must not be done for all types of particles.)
83    randDir = Vector(rand()-RAND_MAX/2, rand()-RAND_MAX/2, rand()-RAND_MAX/2);
84    randDir.normalize();
85    Quaternion orient = Quaternion(M_PI, randDir);
86    Quaternion moment = Quaternion(this->momentum + this->momentumRandom, randDir);
87
88    this->getSystem()->addParticle(this->getAbsCoor() + this->getVelocity()*.1*rand()/RAND_MAX,
89                                   velocityV, orient, moment);
90
91  }
92}
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