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Diffstat (limited to 'Box2D/Dynamics/Joints/b2Joint.cpp')
| -rw-r--r-- | Box2D/Dynamics/Joints/b2Joint.cpp | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/Box2D/Dynamics/Joints/b2Joint.cpp b/Box2D/Dynamics/Joints/b2Joint.cpp new file mode 100644 index 0000000..84802bf --- /dev/null +++ b/Box2D/Dynamics/Joints/b2Joint.cpp @@ -0,0 +1,199 @@ +/* +* Copyright (c) 2006-2007 Erin Catto http://www.box2d.org +* +* This software is provided 'as-is', without any express or implied +* warranty. In no event will the authors be held liable for any damages +* arising from the use of this software. +* Permission is granted to anyone to use this software for any purpose, +* including commercial applications, and to alter it and redistribute it +* freely, subject to the following restrictions: +* 1. The origin of this software must not be misrepresented; you must not +* claim that you wrote the original software. If you use this software +* in a product, an acknowledgment in the product documentation would be +* appreciated but is not required. +* 2. Altered source versions must be plainly marked as such, and must not be +* misrepresented as being the original software. +* 3. This notice may not be removed or altered from any source distribution. +*/ + +#include <Box2D/Dynamics/Joints/b2Joint.h> +#include <Box2D/Dynamics/Joints/b2DistanceJoint.h> +#include <Box2D/Dynamics/Joints/b2WheelJoint.h> +#include <Box2D/Dynamics/Joints/b2MouseJoint.h> +#include <Box2D/Dynamics/Joints/b2RevoluteJoint.h> +#include <Box2D/Dynamics/Joints/b2PrismaticJoint.h> +#include <Box2D/Dynamics/Joints/b2PulleyJoint.h> +#include <Box2D/Dynamics/Joints/b2GearJoint.h> +#include <Box2D/Dynamics/Joints/b2WeldJoint.h> +#include <Box2D/Dynamics/Joints/b2FrictionJoint.h> +#include <Box2D/Dynamics/Joints/b2RopeJoint.h> +#include <Box2D/Dynamics/b2Body.h> +#include <Box2D/Dynamics/b2World.h> +#include <Box2D/Common/b2BlockAllocator.h> + +#include <new> + +b2Joint* b2Joint::Create(const b2JointDef* def, b2BlockAllocator* allocator) +{ + b2Joint* joint = NULL; + + switch (def->type) + { + case e_distanceJoint: + { + void* mem = allocator->Allocate(sizeof(b2DistanceJoint)); + joint = new (mem) b2DistanceJoint((b2DistanceJointDef*)def); + } + break; + + case e_mouseJoint: + { + void* mem = allocator->Allocate(sizeof(b2MouseJoint)); + joint = new (mem) b2MouseJoint((b2MouseJointDef*)def); + } + break; + + case e_prismaticJoint: + { + void* mem = allocator->Allocate(sizeof(b2PrismaticJoint)); + joint = new (mem) b2PrismaticJoint((b2PrismaticJointDef*)def); + } + break; + + case e_revoluteJoint: + { + void* mem = allocator->Allocate(sizeof(b2RevoluteJoint)); + joint = new (mem) b2RevoluteJoint((b2RevoluteJointDef*)def); + } + break; + + case e_pulleyJoint: + { + void* mem = allocator->Allocate(sizeof(b2PulleyJoint)); + joint = new (mem) b2PulleyJoint((b2PulleyJointDef*)def); + } + break; + + case e_gearJoint: + { + void* mem = allocator->Allocate(sizeof(b2GearJoint)); + joint = new (mem) b2GearJoint((b2GearJointDef*)def); + } + break; + + case e_wheelJoint: + { + void* mem = allocator->Allocate(sizeof(b2WheelJoint)); + joint = new (mem) b2WheelJoint((b2WheelJointDef*)def); + } + break; + + case e_weldJoint: + { + void* mem = allocator->Allocate(sizeof(b2WeldJoint)); + joint = new (mem) b2WeldJoint((b2WeldJointDef*)def); + } + break; + + case e_frictionJoint: + { + void* mem = allocator->Allocate(sizeof(b2FrictionJoint)); + joint = new (mem) b2FrictionJoint((b2FrictionJointDef*)def); + } + break; + + case e_ropeJoint: + { + void* mem = allocator->Allocate(sizeof(b2RopeJoint)); + joint = new (mem) b2RopeJoint((b2RopeJointDef*)def); + } + break; + + default: + b2Assert(false); + break; + } + + return joint; +} + +void b2Joint::Destroy(b2Joint* joint, b2BlockAllocator* allocator) +{ + joint->~b2Joint(); + switch (joint->m_type) + { + case e_distanceJoint: + allocator->Free(joint, sizeof(b2DistanceJoint)); + break; + + case e_mouseJoint: + allocator->Free(joint, sizeof(b2MouseJoint)); + break; + + case e_prismaticJoint: + allocator->Free(joint, sizeof(b2PrismaticJoint)); + break; + + case e_revoluteJoint: + allocator->Free(joint, sizeof(b2RevoluteJoint)); + break; + + case e_pulleyJoint: + allocator->Free(joint, sizeof(b2PulleyJoint)); + break; + + case e_gearJoint: + allocator->Free(joint, sizeof(b2GearJoint)); + break; + + case e_wheelJoint: + allocator->Free(joint, sizeof(b2WheelJoint)); + break; + + case e_weldJoint: + allocator->Free(joint, sizeof(b2WeldJoint)); + break; + + case e_frictionJoint: + allocator->Free(joint, sizeof(b2FrictionJoint)); + break; + + case e_ropeJoint: + allocator->Free(joint, sizeof(b2RopeJoint)); + break; + + default: + b2Assert(false); + break; + } +} + +b2Joint::b2Joint(const b2JointDef* def) +{ + b2Assert(def->bodyA != def->bodyB); + + m_type = def->type; + m_prev = NULL; + m_next = NULL; + m_bodyA = def->bodyA; + m_bodyB = def->bodyB; + m_index = 0; + m_collideConnected = def->collideConnected; + m_islandFlag = false; + m_userData = def->userData; + + m_edgeA.joint = NULL; + m_edgeA.other = NULL; + m_edgeA.prev = NULL; + m_edgeA.next = NULL; + + m_edgeB.joint = NULL; + m_edgeB.other = NULL; + m_edgeB.prev = NULL; + m_edgeB.next = NULL; +} + +bool b2Joint::IsActive() const +{ + return m_bodyA->IsActive() && m_bodyB->IsActive(); +} |