forked from mirror/openmw-tes3mp
88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
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#include "trace.h"
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#include <map>
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#include <btBulletDynamicsCommon.h>
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#include <btBulletCollisionCommon.h>
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#include "physic.hpp"
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enum traceWorldType
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{
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collisionWorldTrace = 1,
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pickWorldTrace = 2,
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bothWorldTrace = collisionWorldTrace | pickWorldTrace
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};
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enum collaborativePhysicsType
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{
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No_Physics = 0, // Both are empty (example: statics you can walk through, like tall grass)
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Only_Collision = 1, // This object only has collision physics but no pickup physics (example: statics)
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Only_Pickup = 2, // This object only has pickup physics but no collision physics (example: items dropped on the ground)
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Both_Physics = 3 // This object has both kinds of physics (example: activators)
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};
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struct NewPhysTraceResults
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{
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Ogre::Vector3 endPos;
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Ogre::Vector3 hitNormal;
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float fraction;
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//const Object* hitObj;
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};
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static bool NewPhysicsTrace(NewPhysTraceResults* const out, const Ogre::Vector3& start, const Ogre::Vector3& end,
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const Ogre::Vector3& BBHalfExtents, const Ogre::Vector3& rotation, bool isInterior,
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OEngine::Physic::PhysicEngine* enginePass)
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{
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const btVector3 btstart(start.x, start.y, start.z + BBHalfExtents.z);
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const btVector3 btend(end.x, end.y, end.z + BBHalfExtents.z);
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const btQuaternion btrot(rotation.y, rotation.x, rotation.z); //y, x, z
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const btBoxShape newshape(btVector3(BBHalfExtents.x, BBHalfExtents.y, BBHalfExtents.z));
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//const btCapsuleShapeZ newshape(BBHalfExtents.x, BBHalfExtents.z * 2 - BBHalfExtents.x * 2);
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const btTransform from(btrot, btstart);
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const btTransform to(btrot, btend);
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btCollisionWorld::ClosestConvexResultCallback newTraceCallback(btstart, btend);
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newTraceCallback.m_collisionFilterMask = Only_Collision;
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enginePass->dynamicsWorld->convexSweepTest(&newshape, from, to, newTraceCallback);
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// Copy the hit data over to our trace results struct:
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out->fraction = newTraceCallback.m_closestHitFraction;
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const btVector3& tracehitnormal = newTraceCallback.m_hitNormalWorld;
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out->hitNormal.x = tracehitnormal.x();
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out->hitNormal.y = tracehitnormal.y();
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out->hitNormal.z = tracehitnormal.z();
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const btVector3& tracehitpos = newTraceCallback.m_hitPointWorld;
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out->endPos.x = tracehitpos.x();
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out->endPos.y = tracehitpos.y();
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out->endPos.z = tracehitpos.z();
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return newTraceCallback.hasHit();
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}
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void newtrace(traceResults* const results, const Ogre::Vector3& start, const Ogre::Vector3& end, const Ogre::Vector3& BBHalfExtents, const float rotation, bool isInterior, OEngine::Physic::PhysicEngine* enginePass) //Traceobj was a Aedra Object
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{
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NewPhysTraceResults out;
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bool hasHit = NewPhysicsTrace(&out, start, end, BBHalfExtents, Ogre::Vector3(0.0f, 0.0f, 0.0f),
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isInterior, enginePass);
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if(!hasHit)
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{
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results->endpos = end;
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results->planenormal = Ogre::Vector3(0.0f, 0.0f, 1.0f);
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results->fraction = 1.0f;
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}
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else
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{
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results->fraction = out.fraction;
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results->planenormal = out.hitNormal;
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results->endpos = (end-start)*results->fraction + start;
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}
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}
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