crown-engine/engine/physics/joint.cpp

/*
 * Copyright (c) 2012-2014 Daniele Bartolini and individual contributors.
 * License: https://github.com/taylor001/crown/blob/master/LICENSE
 */

#include "joint.h"
#include "actor.h"
#include "vector3.h"
#include "physics_resource.h"
#include "scene_graph.h"
#include "math_utils.h"

#include "PxVec3.h"
#include "PxMat44.h"
#include "PxRigidActor.h"
#include "PxRigidDynamic.h"
#include "PxRigidStatic.h"
#include "PxBoxGeometry.h"

#include "PxFixedJoint.h"
#include "PxSphericalJoint.h"
#include "PxRevoluteJoint.h"
#include "PxPrismaticJoint.h"
#include "PxDistanceJoint.h"
#include "PxJointLimit.h"
#include "PxTolerancesScale.h"
#include "actor.h"

using physx::PxPhysics;
using physx::PxScene;

using physx::PxTransform;
using physx::PxVec3;
using physx::PxMat44;
using physx::PxRigidActor;
using physx::PxBoxGeometry;
using physx::PxReal;
using physx::PxPi;
using physx::PxConstraintFlag;

using physx::PxJoint;
using physx::PxFixedJoint;
using physx::PxFixedJointCreate;

using physx::PxSphericalJoint;
using physx::PxSphericalJointCreate;
using physx::PxSphericalJointFlag;
using physx::PxJointLimitCone;

using physx::PxRevoluteJoint;
using physx::PxRevoluteJointCreate;
using physx::PxRevoluteJointFlag;

using physx::PxPrismaticJoint;
using physx::PxPrismaticJointCreate;
using physx::PxPrismaticJointFlag;

using physx::PxDistanceJoint;
using physx::PxDistanceJointCreate;
using physx::PxDistanceJointFlag;
using physx::PxJointLinearLimitPair;
using physx::PxTolerancesScale;
using physx::PxJointAngularLimitPair;

namespace crown
{

Joint::Joint(PxPhysics* physics, const PhysicsResource* pr, const uint32_t index, const Actor& actor_0, const Actor& actor_1)
	: m_resource(pr)
	, m_index(index)
{
	const PhysicsJoint* joint = physics_resource::joint(m_resource, m_index);

	PxVec3 anchor_0(joint->anchor_0.x, joint->anchor_0.y, joint->anchor_0.z);
	PxVec3 anchor_1(joint->anchor_1.x, joint->anchor_1.y, joint->anchor_1.z);

	switch(joint->type)
	{
		case JointType::FIXED:
		{
			m_joint = PxFixedJointCreate(*physics, actor_0.m_actor, PxTransform(anchor_0), actor_1.m_actor, PxTransform(anchor_1));

			break;
		}
		case JointType::SPHERICAL:
		{
			PxJointLimitCone limit_cone(joint->y_limit_angle, joint->z_limit_angle, joint->contact_dist);
			limit_cone.restitution = joint->restitution;
			limit_cone.damping = joint->damping;
			limit_cone.contactDistance = joint->distance;

			m_joint = PxSphericalJointCreate(*physics, actor_0.m_actor, PxTransform(anchor_0), actor_1.m_actor, PxTransform(anchor_1));
			static_cast<PxSphericalJoint*>(m_joint)->setLimitCone(limit_cone);
			static_cast<PxSphericalJoint*>(m_joint)->setSphericalJointFlag(PxSphericalJointFlag::eLIMIT_ENABLED, true);

			break;
		}
		case JointType::REVOLUTE:
		{
			PxJointAngularLimitPair limit_pair(joint->lower_limit, joint->upper_limit, joint->contact_dist);
			limit_pair.damping = joint->damping;

			m_joint = PxRevoluteJointCreate(*physics, actor_0.m_actor, PxTransform(anchor_0), actor_1.m_actor, PxTransform(anchor_1));
			static_cast<PxRevoluteJoint*>(m_joint)->setLimit(limit_pair);
			static_cast<PxRevoluteJoint*>(m_joint)->setRevoluteJointFlag(PxRevoluteJointFlag::eLIMIT_ENABLED, true);

			static_cast<PxRevoluteJoint*>(m_joint)->setDriveVelocity(10.0f);
			static_cast<PxRevoluteJoint*>(m_joint)->setRevoluteJointFlag(PxRevoluteJointFlag::eDRIVE_ENABLED, true);

			break;
		}
		case JointType::PRISMATIC:
		{
			PxJointLinearLimitPair limit_pair(PxTolerancesScale(), joint->lower_limit, joint->upper_limit, joint->contact_dist);
			limit_pair.damping = joint->damping;

			m_joint = PxPrismaticJointCreate(*physics, actor_0.m_actor, PxTransform(anchor_0), actor_1.m_actor, PxTransform(anchor_1));
			static_cast<PxPrismaticJoint*>(m_joint)->setLimit(limit_pair);
			static_cast<PxPrismaticJoint*>(m_joint)->setPrismaticJointFlag(PxPrismaticJointFlag::eLIMIT_ENABLED, true);

			break;
		}
		case JointType::DISTANCE:
		{
			m_joint = PxDistanceJointCreate(*physics, actor_0.m_actor, PxTransform(anchor_0), actor_1.m_actor, PxTransform(anchor_1));
			static_cast<PxDistanceJoint*>(m_joint)->setMaxDistance(joint->max_distance);
			static_cast<PxDistanceJoint*>(m_joint)->setDistanceJointFlag(PxDistanceJointFlag::eMAX_DISTANCE_ENABLED, true);

			break;
		}
		case JointType::D6:
		{
			// Must be implemented

			break;
		}
	}

	if (joint->breakable) m_joint->setBreakForce(joint->break_force, joint->break_torque);
}

Joint::~Joint()
{

}

} // namespace crown