mirror of
https://github.com/love2d/love.git
synced 2026-08-12 16:40:57 +02:00
Garrett Brown
130 lines
3.0 KiB
C++
130 lines
3.0 KiB
C++
/**
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* Copyright (c) 2006-2020 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#include "WheelJoint.h"
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// Module
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#include "Body.h"
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#include "World.h"
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#include "Physics.h"
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namespace love
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{
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namespace physics
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{
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namespace box2d
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{
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love::Type WheelJoint::type("WheelJoint", &Joint::type);
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WheelJoint::WheelJoint(Body *body1, Body *body2, float xA, float yA, float xB, float yB, float ax, float ay, bool collideConnected)
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: Joint(body1, body2)
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, joint(NULL)
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{
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b2WheelJointDef def;
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def.Initialize(body1->body, body2->body, Physics::scaleDown(b2Vec2(xA,yA)), b2Vec2(ax,ay));
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def.localAnchorB = body2->body->GetLocalPoint(Physics::scaleDown(b2Vec2(xB, yB)));
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def.collideConnected = collideConnected;
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joint = (b2WheelJoint *)createJoint(&def);
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}
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WheelJoint::~WheelJoint()
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{
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}
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float WheelJoint::getJointTranslation() const
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{
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return Physics::scaleUp(joint->GetJointTranslation());
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}
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float WheelJoint::getJointSpeed() const
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{
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return Physics::scaleUp(joint->GetJointLinearSpeed());
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}
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void WheelJoint::setMotorEnabled(bool enable)
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{
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return joint->EnableMotor(enable);
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}
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bool WheelJoint::isMotorEnabled() const
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{
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return joint->IsMotorEnabled();
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}
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void WheelJoint::setMotorSpeed(float speed)
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{
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joint->SetMotorSpeed(speed);
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}
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float WheelJoint::getMotorSpeed() const
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{
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return joint->GetMotorSpeed();
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}
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void WheelJoint::setMaxMotorTorque(float torque)
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{
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joint->SetMaxMotorTorque(Physics::scaleDown(Physics::scaleDown(torque)));
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}
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float WheelJoint::getMaxMotorTorque() const
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{
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return Physics::scaleUp(Physics::scaleUp(joint->GetMaxMotorTorque()));
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}
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float WheelJoint::getMotorTorque(float inv_dt) const
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{
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return Physics::scaleUp(Physics::scaleUp(joint->GetMotorTorque(inv_dt)));
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}
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void WheelJoint::setStiffness(float hz)
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{
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joint->SetStiffness(hz);
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}
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float WheelJoint::getStiffness() const
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{
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return joint->GetStiffness();
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}
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void WheelJoint::setDamping(float ratio)
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{
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joint->SetDamping(ratio);
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}
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float WheelJoint::getDamping() const
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{
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return joint->GetDamping();
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}
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int WheelJoint::getAxis(lua_State *L)
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{
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b2Vec2 axis = joint->GetLocalAxisA();
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getBodyA()->getWorldVector(axis.x, axis.y, axis.x, axis.y);
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lua_pushnumber(L, axis.x);
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lua_pushnumber(L, axis.y);
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return 2;
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}
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} // box2d
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} // physics
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} // love
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