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diff --git a/src/others/irrlicht-1.8.1/source/Irrlicht/CParticleBoxEmitter.cpp b/src/others/irrlicht-1.8.1/source/Irrlicht/CParticleBoxEmitter.cpp
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1// Copyright (C) 2002-2012 Nikolaus Gebhardt
2// This file is part of the "Irrlicht Engine".
3// For conditions of distribution and use, see copyright notice in irrlicht.h
4
5#include "CParticleBoxEmitter.h"
6#include "os.h"
7#include "IAttributes.h"
8#include "irrMath.h"
9
10namespace irr
11{
12namespace scene
13{
14
15//! constructor
16CParticleBoxEmitter::CParticleBoxEmitter(
17 const core::aabbox3df& box, const core::vector3df& direction,
18 u32 minParticlesPerSecond, u32 maxParticlesPerSecond,
19 video::SColor minStartColor, video::SColor maxStartColor,
20 u32 lifeTimeMin, u32 lifeTimeMax, s32 maxAngleDegrees,
21 const core::dimension2df& minStartSize, const core::dimension2df& maxStartSize)
22 : Box(box), Direction(direction),
23 MaxStartSize(maxStartSize), MinStartSize(minStartSize),
24 MinParticlesPerSecond(minParticlesPerSecond),
25 MaxParticlesPerSecond(maxParticlesPerSecond),
26 MinStartColor(minStartColor), MaxStartColor(maxStartColor),
27 MinLifeTime(lifeTimeMin), MaxLifeTime(lifeTimeMax),
28 Time(0), Emitted(0), MaxAngleDegrees(maxAngleDegrees)
29{
30 #ifdef _DEBUG
31 setDebugName("CParticleBoxEmitter");
32 #endif
33}
34
35
36//! Prepares an array with new particles to emitt into the system
37//! and returns how much new particles there are.
38s32 CParticleBoxEmitter::emitt(u32 now, u32 timeSinceLastCall, SParticle*& outArray)
39{
40 Time += timeSinceLastCall;
41
42 const u32 pps = (MaxParticlesPerSecond - MinParticlesPerSecond);
43 const f32 perSecond = pps ? ((f32)MinParticlesPerSecond + os::Randomizer::frand() * pps) : MinParticlesPerSecond;
44 const f32 everyWhatMillisecond = 1000.0f / perSecond;
45
46 if (Time > everyWhatMillisecond)
47 {
48 Particles.set_used(0);
49 u32 amount = (u32)((Time / everyWhatMillisecond) + 0.5f);
50 Time = 0;
51 SParticle p;
52 const core::vector3df& extent = Box.getExtent();
53
54 if (amount > MaxParticlesPerSecond*2)
55 amount = MaxParticlesPerSecond * 2;
56
57 for (u32 i=0; i<amount; ++i)
58 {
59 p.pos.X = Box.MinEdge.X + os::Randomizer::frand() * extent.X;
60 p.pos.Y = Box.MinEdge.Y + os::Randomizer::frand() * extent.Y;
61 p.pos.Z = Box.MinEdge.Z + os::Randomizer::frand() * extent.Z;
62
63 p.startTime = now;
64 p.vector = Direction;
65
66 if (MaxAngleDegrees)
67 {
68 core::vector3df tgt = Direction;
69 tgt.rotateXYBy(os::Randomizer::frand() * MaxAngleDegrees);
70 tgt.rotateYZBy(os::Randomizer::frand() * MaxAngleDegrees);
71 tgt.rotateXZBy(os::Randomizer::frand() * MaxAngleDegrees);
72 p.vector = tgt;
73 }
74
75 p.endTime = now + MinLifeTime;
76 if (MaxLifeTime != MinLifeTime)
77 p.endTime += os::Randomizer::rand() % (MaxLifeTime - MinLifeTime);
78
79 if (MinStartColor==MaxStartColor)
80 p.color=MinStartColor;
81 else
82 p.color = MinStartColor.getInterpolated(MaxStartColor, os::Randomizer::frand());
83
84 p.startColor = p.color;
85 p.startVector = p.vector;
86
87 if (MinStartSize==MaxStartSize)
88 p.startSize = MinStartSize;
89 else
90 p.startSize = MinStartSize.getInterpolated(MaxStartSize, os::Randomizer::frand());
91 p.size = p.startSize;
92
93 Particles.push_back(p);
94 }
95
96 outArray = Particles.pointer();
97
98 return Particles.size();
99 }
100
101 return 0;
102}
103
104
105//! Writes attributes of the object.
106void CParticleBoxEmitter::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options) const
107{
108 core::vector3df b = Box.getExtent();
109 b *= 0.5f;
110 out->addVector3d("Box", b);
111 out->addVector3d("Direction", Direction);
112 out->addFloat("MinStartSizeWidth", MinStartSize.Width);
113 out->addFloat("MinStartSizeHeight", MinStartSize.Height);
114 out->addFloat("MaxStartSizeWidth", MaxStartSize.Width);
115 out->addFloat("MaxStartSizeHeight", MaxStartSize.Height);
116 out->addInt("MinParticlesPerSecond", MinParticlesPerSecond);
117 out->addInt("MaxParticlesPerSecond", MaxParticlesPerSecond);
118 out->addColor("MinStartColor", MinStartColor);
119 out->addColor("MaxStartColor", MaxStartColor);
120 out->addInt("MinLifeTime", MinLifeTime);
121 out->addInt("MaxLifeTime", MaxLifeTime);
122 out->addInt("MaxAngleDegrees", MaxAngleDegrees);
123}
124
125
126//! Reads attributes of the object.
127void CParticleBoxEmitter::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options)
128{
129 // read data and correct input values here
130
131 core::vector3df b = in->getAttributeAsVector3d("Box");
132
133 if (b.X <= 0)
134 b.X = 1.0f;
135 if (b.Y <= 0)
136 b.Y = 1.0f;
137 if (b.Z <= 0)
138 b.Z = 1.0f;
139
140 Box.MinEdge.X = -b.X;
141 Box.MinEdge.Y = -b.Y;
142 Box.MinEdge.Z = -b.Z;
143 Box.MaxEdge.X = b.X;
144 Box.MaxEdge.Y = b.Y;
145 Box.MaxEdge.Z = b.Z;
146
147 Direction = in->getAttributeAsVector3d("Direction");
148 if (Direction.getLength() == 0)
149 Direction.set(0,0.01f,0);
150
151 int idx = -1;
152 idx = in->findAttribute("MinStartSizeWidth");
153 if ( idx >= 0 )
154 MinStartSize.Width = in->getAttributeAsFloat(idx);
155 idx = in->findAttribute("MinStartSizeHeight");
156 if ( idx >= 0 )
157 MinStartSize.Height = in->getAttributeAsFloat(idx);
158 idx = in->findAttribute("MaxStartSizeWidth");
159 if ( idx >= 0 )
160 MaxStartSize.Width = in->getAttributeAsFloat(idx);
161 idx = in->findAttribute("MaxStartSizeHeight");
162 if ( idx >= 0 )
163 MaxStartSize.Height = in->getAttributeAsFloat(idx);
164
165 MinParticlesPerSecond = in->getAttributeAsInt("MinParticlesPerSecond");
166 MaxParticlesPerSecond = in->getAttributeAsInt("MaxParticlesPerSecond");
167
168 MinParticlesPerSecond = core::max_(1u, MinParticlesPerSecond);
169 MaxParticlesPerSecond = core::max_(MaxParticlesPerSecond, 1u);
170 MaxParticlesPerSecond = core::min_(MaxParticlesPerSecond, 200u);
171 MinParticlesPerSecond = core::min_(MinParticlesPerSecond, MaxParticlesPerSecond);
172
173 MinStartColor = in->getAttributeAsColor("MinStartColor");
174 MaxStartColor = in->getAttributeAsColor("MaxStartColor");
175 MinLifeTime = in->getAttributeAsInt("MinLifeTime");
176 MaxLifeTime = in->getAttributeAsInt("MaxLifeTime");
177 MaxAngleDegrees = in->getAttributeAsInt("MaxAngleDegrees");
178
179 MinLifeTime = core::max_(0u, MinLifeTime);
180 MaxLifeTime = core::max_(MaxLifeTime, MinLifeTime);
181 MinLifeTime = core::min_(MinLifeTime, MaxLifeTime);
182
183}
184
185
186} // end namespace scene
187} // end namespace irr
188
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