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add CollisionInfo::getShapePairKey()

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This commit is contained in:
Andrew Meadows 2014-07-30 13:11:45 -07:00
parent 176d8d157d
commit f579d2a0e2
2 changed files with 14 additions and 0 deletions
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10
libraries/shared/src/CollisionInfo.cpp
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@ -26,6 +26,16 @@ CollisionInfo::CollisionInfo() :
_addedVelocity(0.f) {
}
quint64 CollisionInfo::getShapePairKey() const {
if (_shapeB == NULL || _shapeA == NULL) {
// zero is an invalid key
return 0;
}
quint32 idA = _shapeA->getID();
quint32 idB = _shapeB->getID();
return idA < idB ? ((quint64)idA << 32) + (quint64)idB : ((quint64)idB << 32) + (quint64)idA;
}
CollisionList::CollisionList(int maxSize) :
_maxSize(maxSize),
_size(0) {

4
libraries/shared/src/CollisionInfo.h
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@ -15,6 +15,7 @@
#include <glm/glm.hpp>
#include <glm/gtc/quaternion.hpp>
#include <QtGlobal>
#include <QVector>
class Shape;
@ -47,6 +48,9 @@ public:
Shape* getShapeA() const { return const_cast<Shape*>(_shapeA); }
Shape* getShapeB() const { return const_cast<Shape*>(_shapeB); }
/// \return unique key for shape pair
quint64 getShapePairKey() const;
const Shape* _shapeA; // pointer to shapeA in this collision
const Shape* _shapeB; // pointer to shapeB in this collision