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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/*
* Copyright (C) 2006-2010 - Frictional Games
*
* This file is part of HPL1 Engine.
*/
#include "hpl1/engine/impl/PhysicsJointScrewNewton.h"
#include "hpl1/engine/impl/PhysicsBodyNewton.h"
#include "hpl1/engine/impl/PhysicsWorldNewton.h"
#include "hpl1/engine/math/Vector3.h"
namespace hpl {
//////////////////////////////////////////////////////////////////////////
// CONSTRUCTORS
//////////////////////////////////////////////////////////////////////////
//-----------------------------------------------------------------------
cPhysicsJointScrewNewton::cPhysicsJointScrewNewton(const tString &asName,
iPhysicsBody *apParentBody, iPhysicsBody *apChildBody,
iPhysicsWorld *apWorld, const cVector3f &avPivotPoint, const cVector3f avPinDir)
: iPhysicsJointNewton<iPhysicsJointScrew>(asName, apParentBody, apChildBody, apWorld, avPivotPoint) {
mvPin = avPinDir;
mvPin.Normalise();
VEC3_CONST_ARRAY(pvPoint, avPivotPoint);
VEC3_CONST_ARRAY(pDir, avPinDir);
mpNewtonJoint = NewtonConstraintCreateCorkscrew(mpNewtonWorld, pvPoint, pDir, mpNewtonChildBody,
mpNewtonParentBody);
NewtonJointSetUserData(mpNewtonJoint, (void *)this);
NewtonCorkscrewSetUserCallback(mpNewtonJoint, LimitCallback);
mfMaxDistance = 0;
mfMinDistance = 0;
mvPinDir = avPinDir;
mvPivotPoint = avPivotPoint;
}
//-----------------------------------------------------------------------
cPhysicsJointScrewNewton::~cPhysicsJointScrewNewton() {
}
//-----------------------------------------------------------------------
//////////////////////////////////////////////////////////////////////////
// PUBLIC METHODS
//////////////////////////////////////////////////////////////////////////
//-----------------------------------------------------------------------
void cPhysicsJointScrewNewton::SetMaxDistance(float afX) {
mfMaxDistance = afX;
}
void cPhysicsJointScrewNewton::SetMinDistance(float afX) {
mfMinDistance = afX;
}
float cPhysicsJointScrewNewton::GetMaxDistance() {
return mfMaxDistance;
}
float cPhysicsJointScrewNewton::GetMinDistance() {
return mfMinDistance;
}
//-----------------------------------------------------------------------
cVector3f cPhysicsJointScrewNewton::GetVelocity() {
float fSpeed = NewtonCorkscrewGetJointVeloc(mpNewtonJoint);
return mvPin * fSpeed;
}
cVector3f cPhysicsJointScrewNewton::GetAngularVelocity() {
return cVector3f(0, 0, 0);
}
cVector3f cPhysicsJointScrewNewton::GetForce() {
cVector3f vForce;
NewtonCorkscrewGetJointForce(mpNewtonJoint, &vForce.x);
return vForce;
}
//-----------------------------------------------------------------------
float cPhysicsJointScrewNewton::GetDistance() {
return NewtonCorkscrewGetJointPosit(mpNewtonJoint);
}
float cPhysicsJointScrewNewton::GetAngle() {
return NewtonCorkscrewGetJointAngle(mpNewtonJoint);
}
//-----------------------------------------------------------------------
//////////////////////////////////////////////////////////////////////////
// STATIC CALLBACKS
//////////////////////////////////////////////////////////////////////////
//-----------------------------------------------------------------------
unsigned cPhysicsJointScrewNewton::LimitCallback(const NewtonJoint *pScrew, NewtonHingeSliderUpdateDesc *pDesc) {
cPhysicsJointScrewNewton *pScrewJoint = (cPhysicsJointScrewNewton *)NewtonJointGetUserData(pScrew);
// pScrewJoint->OnPhysicsUpdate();
float fDistance = NewtonCorkscrewGetJointPosit(pScrew);
// Log("Dist: %f\n",fDistance);
if (pScrewJoint->mfMinDistance == 0 && pScrewJoint->mfMaxDistance == 0)
return 0;
// Avoid oscillation
CheckLimitAutoSleep(pScrewJoint, pScrewJoint->mfMinDistance, pScrewJoint->mfMaxDistance, fDistance);
if (fDistance < pScrewJoint->mfMinDistance) {
pScrewJoint->OnMinLimit();
pDesc->m_accel = NewtonCorkscrewCalculateStopAccel(pScrew, pDesc, pScrewJoint->mfMinDistance);
pDesc->m_minFriction = 0;
return 1;
} else if (fDistance > pScrewJoint->mfMaxDistance) {
pScrewJoint->OnMaxLimit();
pDesc->m_accel = NewtonCorkscrewCalculateStopAccel(pScrew, pDesc, pScrewJoint->mfMaxDistance);
pDesc->m_maxFriction = 0;
return 1;
} else {
if (pScrewJoint->mpParentBody == NULL || pScrewJoint->mpParentBody->GetMass() == 0) {
if ((pScrewJoint->mfStickyMaxDistance != 0 &&
fabs(fDistance - pScrewJoint->mfMaxDistance) < pScrewJoint->mfStickyMaxDistance) ||
(pScrewJoint->mfStickyMinDistance != 0 &&
fabs(fDistance - pScrewJoint->mfMinDistance) < pScrewJoint->mfStickyMinDistance)) {
pScrewJoint->mpChildBody->SetAngularVelocity(0);
pScrewJoint->mpChildBody->SetLinearVelocity(0);
}
}
pScrewJoint->OnNoLimit();
}
return 0;
}
//-----------------------------------------------------------------------
} // namespace hpl
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