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protect physics against bad entity properties

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This commit is contained in:
Andrew Meadows 2016-06-21 13:55:11 -07:00
parent 937bd0c1be
commit 4c9ec7ca43
2 changed files with 30 additions and 23 deletions
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5
libraries/physics/src/EntityMotionState.cpp
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@ -152,6 +152,11 @@ PhysicsMotionType EntityMotionState::computePhysicsMotionType() const {
} }
assert(entityTreeIsLocked()); assert(entityTreeIsLocked());
if (_entity->getShapeType() == SHAPE_TYPE_STATIC_MESH
|| (_body && _body->getCollisionShape()->getShapeType() == TRIANGLE_MESH_SHAPE_PROXYTYPE)) {
return MOTION_TYPE_STATIC;
}
if (_entity->getDynamic()) { if (_entity->getDynamic()) {
if (!_entity->getParentID().isNull()) { if (!_entity->getParentID().isNull()) {
// if something would have been dynamic but is a child of something else, force it to be kinematic, instead. // if something would have been dynamic but is a child of something else, force it to be kinematic, instead.

48
libraries/physics/src/ObjectMotionState.cpp
View file

@ -203,35 +203,37 @@ void ObjectMotionState::handleEasyChanges(uint32_t& flags) {
} }
} }
if (flags & Simulation::DIRTY_LINEAR_VELOCITY) { if (_body->getCollisionShape()->getShapeType() != TRIANGLE_MESH_SHAPE_PROXYTYPE) {
btVector3 newLinearVelocity = glmToBullet(getObjectLinearVelocity()); if (flags & Simulation::DIRTY_LINEAR_VELOCITY) {
if (!(flags & Simulation::DIRTY_PHYSICS_ACTIVATION)) { btVector3 newLinearVelocity = glmToBullet(getObjectLinearVelocity());
float delta = (newLinearVelocity - _body->getLinearVelocity()).length(); if (!(flags & Simulation::DIRTY_PHYSICS_ACTIVATION)) {
if (delta > ACTIVATION_LINEAR_VELOCITY_DELTA) { float delta = (newLinearVelocity - _body->getLinearVelocity()).length();
flags |= Simulation::DIRTY_PHYSICS_ACTIVATION; if (delta > ACTIVATION_LINEAR_VELOCITY_DELTA) {
flags |= Simulation::DIRTY_PHYSICS_ACTIVATION;
}
} }
} _body->setLinearVelocity(newLinearVelocity);
_body->setLinearVelocity(newLinearVelocity);
btVector3 newGravity = glmToBullet(getObjectGravity()); btVector3 newGravity = glmToBullet(getObjectGravity());
if (!(flags & Simulation::DIRTY_PHYSICS_ACTIVATION)) { if (!(flags & Simulation::DIRTY_PHYSICS_ACTIVATION)) {
float delta = (newGravity - _body->getGravity()).length(); float delta = (newGravity - _body->getGravity()).length();
if (delta > ACTIVATION_GRAVITY_DELTA || if (delta > ACTIVATION_GRAVITY_DELTA ||
(delta > 0.0f && _body->getGravity().length2() == 0.0f)) { (delta > 0.0f && _body->getGravity().length2() == 0.0f)) {
flags |= Simulation::DIRTY_PHYSICS_ACTIVATION; flags |= Simulation::DIRTY_PHYSICS_ACTIVATION;
}
} }
_body->setGravity(newGravity);
} }
_body->setGravity(newGravity); if (flags & Simulation::DIRTY_ANGULAR_VELOCITY) {
} btVector3 newAngularVelocity = glmToBullet(getObjectAngularVelocity());
if (flags & Simulation::DIRTY_ANGULAR_VELOCITY) { if (!(flags & Simulation::DIRTY_PHYSICS_ACTIVATION)) {
btVector3 newAngularVelocity = glmToBullet(getObjectAngularVelocity()); float delta = (newAngularVelocity - _body->getAngularVelocity()).length();
if (!(flags & Simulation::DIRTY_PHYSICS_ACTIVATION)) { if (delta > ACTIVATION_ANGULAR_VELOCITY_DELTA) {
float delta = (newAngularVelocity - _body->getAngularVelocity()).length(); flags |= Simulation::DIRTY_PHYSICS_ACTIVATION;
if (delta > ACTIVATION_ANGULAR_VELOCITY_DELTA) { }
flags |= Simulation::DIRTY_PHYSICS_ACTIVATION;
} }
_body->setAngularVelocity(newAngularVelocity);
} }
_body->setAngularVelocity(newAngularVelocity);
} }
if (flags & Simulation::DIRTY_MATERIAL) { if (flags & Simulation::DIRTY_MATERIAL) {