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affectors attract

This commit is contained in:
Henrique Santiago 2011-12-16 04:24:04 -02:00
parent 26eb3b42a6
commit bf28a92e31
3 changed files with 18 additions and 26 deletions
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35
modules/particle.otpa
View File

@ -1,36 +1,25 @@
ParticleSystem ParticleSystem
AttractionAffector AttractionAffector
destination: 150 150 destination: 200 200
acceleration: 128
velocity-reduction-percent: 10
Emitter Emitter
position: 100 100 position: 200 200
burstRate: 99 burstRate: 1
burstCount: 1 burstCount: 128
particle-duration: 999 particle-duration: 2
particle-position-radius: 0 particle-position-radius: 0
particle-velocity: 32 particle-velocity: 128
particle-velocity-angle: 0 particle-min-velocity-angle: 0
particle-max-velocity-angle: 360
particle-acceleration: 0 particle-acceleration: 0
particle-size: 24 24 particle-size: 32 32
particle-color: #ffff0044 particle-color: #33ff3344
particle-texture: circle2.png particle-texture: circle2.png
Emitter
position: 150 150
burstRate: 99
burstCount: 1
particle-duration: 999
particle-position-radius: 0
particle-velocity: 0
particle-acceleration: 0
particle-size: 24 24
particle-color: #ffff0044
particle-texture: circle2.png

7
src/framework/graphics/particleaffector.cpp
View File

@ -56,6 +56,8 @@ bool AttractionAffector::load(const OTMLNodePtr& node)
m_destination = childNode->value<Point>(); m_destination = childNode->value<Point>();
else if(childNode->tag() == "acceleration") else if(childNode->tag() == "acceleration")
m_acceleration = childNode->value<float>(); m_acceleration = childNode->value<float>();
else if(childNode->tag() == "velocity-reduction-percent")
m_reduction = childNode->value<float>();
} }
return true; return true;
} }
@ -70,6 +72,7 @@ void AttractionAffector::update(const ParticlePtr& particle, double elapsedTime)
if(d.length() == 0) if(d.length() == 0)
return; return;
PointF pVelocity = particle->getVelocity(); PointF pVelocity = particle->getVelocity() + (d / d.length() * m_acceleration * elapsedTime);
particle->setVelocity(pVelocity + (d / d.length()) * m_acceleration * elapsedTime);
particle->setVelocity(pVelocity - pVelocity * m_reduction/100.0 * elapsedTime);
} }

2
src/framework/graphics/particleaffector.h
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@ -48,7 +48,7 @@ public:
private: private:
Point m_destination; Point m_destination;
float m_acceleration; float m_acceleration, m_reduction;
}; };
#endif #endif