mirror of https://github.com/axmolengine/axmol.git
337 lines
9.4 KiB
C++
337 lines
9.4 KiB
C++
/****************************************************************************
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Copyright (c) 2013 Chukong Technologies Inc.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __CCPHYSICS_JOINT_H__
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#define __CCPHYSICS_JOINT_H__
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#include "base/ccConfig.h"
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#if CC_USE_PHYSICS
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#include "base/CCRef.h"
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#include "math/CCGeometry.h"
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struct cpConstraint;
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NS_CC_BEGIN
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class Node;
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class PhysicsBody;
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class PhysicsWorld;
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/*
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* @brief An PhysicsJoint object connects two physics bodies together.
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*/
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class CC_DLL PhysicsJoint
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{
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protected:
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PhysicsJoint();
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virtual ~PhysicsJoint() = 0;
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public:
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inline PhysicsBody* getBodyA() const { return _bodyA; }
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inline PhysicsBody* getBodyB() const { return _bodyB; }
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inline PhysicsWorld* getWorld() const { return _world; }
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inline int getTag() const { return _tag; }
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inline void setTag(int tag) { _tag = tag; }
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inline bool isEnabled() const { return _enable; }
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/** Enable/Disable the joint */
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void setEnable(bool enable);
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inline bool isCollisionEnabled() const { return _collisionEnable; }
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/** Enable/disable the collision between two bodies */
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void setCollisionEnable(bool enable);
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/** Remove the joint from the world */
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void removeFormWorld();
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/** Set the max force between two bodies */
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void setMaxForce(float force);
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/** Get the max force setting */
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float getMaxForce() const { return _maxForce; }
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protected:
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bool init(PhysicsBody* a, PhysicsBody* b);
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bool initJoint();
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virtual bool createConstraints() { return false; }
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std::vector<cpConstraint*> _cpConstraints;
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PhysicsBody* _bodyA;
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PhysicsBody* _bodyB;
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PhysicsWorld* _world;
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bool _enable;
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bool _collisionEnable;
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bool _destoryMark;
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int _tag;
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float _maxForce;
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bool _initDirty;
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friend class PhysicsBody;
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friend class PhysicsWorld;
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friend class PhysicsDebugDraw;
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};
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/*
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* @brief A fixed joint fuses the two bodies together at a reference point. Fixed joints are useful for creating complex shapes that can be broken apart later.
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*/
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class CC_DLL PhysicsJointFixed : public PhysicsJoint
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{
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public:
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static PhysicsJointFixed* construct(PhysicsBody* a, PhysicsBody* b, const Vec2& anchr);
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virtual bool createConstraints() override;
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protected:
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PhysicsJointFixed() {}
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virtual ~PhysicsJointFixed() {}
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Vec2 _anchr;
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};
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/*
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* @brief A limit joint imposes a maximum distance between the two bodies, as if they were connected by a rope.
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*/
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class CC_DLL PhysicsJointLimit : public PhysicsJoint
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{
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public:
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static PhysicsJointLimit* construct(PhysicsBody* a, PhysicsBody* b, const Vec2& anchr1, const Vec2& anchr2);
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static PhysicsJointLimit* construct(PhysicsBody* a, PhysicsBody* b, const Vec2& anchr1, const Vec2& anchr2, float min, float max);
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Vec2 getAnchr1() const;
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void setAnchr1(const Vec2& anchr1);
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Vec2 getAnchr2() const;
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void setAnchr2(const Vec2& anchr2);
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float getMin() const;
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void setMin(float min);
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float getMax() const;
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void setMax(float max);
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virtual bool createConstraints() override;
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protected:
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PhysicsJointLimit() {}
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virtual ~PhysicsJointLimit() {}
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Vec2 _anchr1;
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Vec2 _anchr2;
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float _min;
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float _max;
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};
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/*
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* @brief A pin joint allows the two bodies to independently rotate around the anchor point as if pinned together.
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*/
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class CC_DLL PhysicsJointPin : public PhysicsJoint
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{
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public:
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static PhysicsJointPin* construct(PhysicsBody* a, PhysicsBody* b, const Vec2& pivot);
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static PhysicsJointPin* construct(PhysicsBody* a, PhysicsBody* b, const Vec2& anchr1, const Vec2& anchr2);
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virtual bool createConstraints() override;
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protected:
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PhysicsJointPin() {}
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virtual ~PhysicsJointPin() {}
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bool _useSpecificAnchr;
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Vec2 _anchr1;
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Vec2 _anchr2;
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};
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/** Set the fixed distance with two bodies */
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class CC_DLL PhysicsJointDistance : public PhysicsJoint
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{
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public:
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static PhysicsJointDistance* construct(PhysicsBody* a, PhysicsBody* b, const Vec2& anchr1, const Vec2& anchr2);
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float getDistance() const;
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void setDistance(float distance);
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virtual bool createConstraints() override;
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protected:
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PhysicsJointDistance() {}
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virtual ~PhysicsJointDistance() {}
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Vec2 _anchr1;
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Vec2 _anchr2;
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};
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/** Connecting two physics bodies together with a spring. */
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class CC_DLL PhysicsJointSpring : public PhysicsJoint
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{
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public:
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static PhysicsJointSpring* construct(PhysicsBody* a, PhysicsBody* b, const Vec2& anchr1, const Vec2& anchr2, float stiffness, float damping);
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Vec2 getAnchr1() const;
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void setAnchr1(const Vec2& anchr1);
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Vec2 getAnchr2() const;
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void setAnchr2(const Vec2& anchr2);
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float getRestLength() const;
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void setRestLength(float restLength);
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float getStiffness() const;
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void setStiffness(float stiffness);
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float getDamping() const;
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void setDamping(float damping);
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virtual bool createConstraints() override;
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protected:
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PhysicsJointSpring() {}
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virtual ~PhysicsJointSpring() {}
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Vec2 _anchr1;
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Vec2 _anchr2;
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float _stiffness;
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float _damping;
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};
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/** Attach body a to a line, and attach body b to a dot */
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class CC_DLL PhysicsJointGroove : public PhysicsJoint
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{
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public:
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static PhysicsJointGroove* construct(PhysicsBody* a, PhysicsBody* b, const Vec2& grooveA, const Vec2& grooveB, const Vec2& anchr2);
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Vec2 getGrooveA() const;
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void setGrooveA(const Vec2& grooveA);
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Vec2 getGrooveB() const;
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void setGrooveB(const Vec2& grooveB);
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Vec2 getAnchr2() const;
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void setAnchr2(const Vec2& anchr2);
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virtual bool createConstraints() override;
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protected:
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PhysicsJointGroove() {}
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virtual ~PhysicsJointGroove() {}
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Vec2 _grooveA;
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Vec2 _grooveB;
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Vec2 _anchr2;
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};
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/** Likes a spring joint, but works with rotary */
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class CC_DLL PhysicsJointRotarySpring : public PhysicsJoint
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{
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public:
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static PhysicsJointRotarySpring* construct(PhysicsBody* a, PhysicsBody* b, float stiffness, float damping);
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float getRestAngle() const;
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void setRestAngle(float restAngle);
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float getStiffness() const;
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void setStiffness(float stiffness);
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float getDamping() const;
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void setDamping(float damping);
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virtual bool createConstraints() override;
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protected:
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PhysicsJointRotarySpring() {}
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virtual ~PhysicsJointRotarySpring() {}
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float _stiffness;
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float _damping;
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};
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/** Likes a limit joint, but works with rotary */
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class CC_DLL PhysicsJointRotaryLimit : public PhysicsJoint
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{
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public:
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static PhysicsJointRotaryLimit* construct(PhysicsBody* a, PhysicsBody* b, float min, float max);
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static PhysicsJointRotaryLimit* construct(PhysicsBody* a, PhysicsBody* b);
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float getMin() const;
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void setMin(float min);
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float getMax() const;
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void setMax(float max);
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virtual bool createConstraints() override;
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protected:
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PhysicsJointRotaryLimit() {}
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virtual ~PhysicsJointRotaryLimit() {}
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float _min;
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float _max;
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};
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/** Works like a socket wrench. */
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class CC_DLL PhysicsJointRatchet : public PhysicsJoint
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{
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public:
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static PhysicsJointRatchet* construct(PhysicsBody* a, PhysicsBody* b, float phase, float ratchet);
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float getAngle() const;
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void setAngle(float angle);
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float getPhase() const;
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void setPhase(float phase);
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float getRatchet() const;
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void setRatchet(float ratchet);
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virtual bool createConstraints() override;
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protected:
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PhysicsJointRatchet() {}
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virtual ~PhysicsJointRatchet() {}
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float _phase;
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float _ratchet;
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};
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/** Keeps the angular velocity ratio of a pair of bodies constant. */
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class CC_DLL PhysicsJointGear : public PhysicsJoint
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{
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public:
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static PhysicsJointGear* construct(PhysicsBody* a, PhysicsBody* b, float phase, float ratio);
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float getPhase() const;
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void setPhase(float phase);
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float getRatio() const;
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void setRatio(float ratchet);
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virtual bool createConstraints() override;
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protected:
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PhysicsJointGear() {}
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virtual ~PhysicsJointGear() {}
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float _phase;
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float _ratio;
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};
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/** Keeps the relative angular velocity of a pair of bodies constant */
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class CC_DLL PhysicsJointMotor : public PhysicsJoint
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{
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public:
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static PhysicsJointMotor* construct(PhysicsBody* a, PhysicsBody* b, float rate);
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float getRate() const;
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void setRate(float rate);
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virtual bool createConstraints() override;
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protected:
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PhysicsJointMotor() {}
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virtual ~PhysicsJointMotor() {}
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float _rate;
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};
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NS_CC_END
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#endif // CC_USE_PHYSICS
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#endif // __CCPHYSICS_JOINT_H__
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