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