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openmw-tes3mp/apps/openmw/mwworld/physicssystem.cpp
Nathan Jeffords 0108be2e4f updated MWWorld::PhysicsSystem::getFacedXXX functions
* changed the names and return values to be consistent
 * made the distance to search a parameter
 * change the distance returned to world units instead of percentage of query distance
2013-01-07 23:00:00 -08:00

417 lines
14 KiB
C++

#include "physicssystem.hpp"
#include <stdexcept>
#include <OgreRoot.h>
#include <OgreRenderWindow.h>
#include <OgreSceneManager.h>
#include <OgreViewport.h>
#include <OgreCamera.h>
#include <OgreTextureManager.h>
#include <components/nifbullet/bullet_nif_loader.hpp>
//#include "../mwbase/world.hpp" // FIXME
#include "../mwbase/environment.hpp"
#include "ptr.hpp"
#include "class.hpp"
using namespace Ogre;
namespace MWWorld
{
PhysicsSystem::PhysicsSystem(OEngine::Render::OgreRenderer &_rend) :
mRender(_rend), mEngine(0), mFreeFly (true)
{
playerphysics = new playerMove;
// Create physics. shapeLoader is deleted by the physic engine
NifBullet::ManualBulletShapeLoader* shapeLoader = new NifBullet::ManualBulletShapeLoader();
mEngine = new OEngine::Physic::PhysicEngine(shapeLoader);
playerphysics->mEngine = mEngine;
}
PhysicsSystem::~PhysicsSystem()
{
delete mEngine;
delete playerphysics;
}
OEngine::Physic::PhysicEngine* PhysicsSystem::getEngine()
{
return mEngine;
}
std::pair<float, std::string> PhysicsSystem::getFacedHandle (MWWorld::World& world, float queryDistance)
{
btVector3 dir(0, 1, 0);
dir = dir.rotate(btVector3(1, 0, 0), mPlayerData.pitch);
dir = dir.rotate(btVector3(0, 0, 1), mPlayerData.yaw);
dir.setX(-dir.x());
btVector3 origin(
mPlayerData.eyepos.x,
mPlayerData.eyepos.y,
mPlayerData.eyepos.z);
origin += dir * 5;
btVector3 dest = origin + dir * queryDistance;
std::pair <std::string, float> result;
/*auto*/ result = mEngine->rayTest(origin, dest);
result.second *= queryDistance;
return std::make_pair (result.second, result.first);
}
std::vector < std::pair <float, std::string> > PhysicsSystem::getFacedHandles (float queryDistance)
{
btVector3 dir(0, 1, 0);
dir = dir.rotate(btVector3(1, 0, 0), mPlayerData.pitch);
dir = dir.rotate(btVector3(0, 0, 1), mPlayerData.yaw);
dir.setX(-dir.x());
btVector3 origin(
mPlayerData.eyepos.x,
mPlayerData.eyepos.y,
mPlayerData.eyepos.z);
origin += dir * 5;
btVector3 dest = origin + dir * queryDistance;
std::vector < std::pair <float, std::string> > results;
/* auto */ results = mEngine->rayTest2(origin, dest);
std::vector < std::pair <float, std::string> >::iterator i;
for (/* auto */ i = results.begin (); i != results.end (); ++i)
i->first *= queryDistance;
return results;
}
std::vector < std::pair <float, std::string> > PhysicsSystem::getFacedHandles (float mouseX, float mouseY, float queryDistance)
{
Ray ray = mRender.getCamera()->getCameraToViewportRay(mouseX, mouseY);
Ogre::Vector3 from = ray.getOrigin();
Ogre::Vector3 to = ray.getPoint(queryDistance);
btVector3 _from, _to;
// OGRE to MW coordinates
_from = btVector3(from.x, -from.z, from.y);
_to = btVector3(to.x, -to.z, to.y);
std::vector < std::pair <float, std::string> > results;
/* auto */ results = mEngine->rayTest2(_from,_to);
std::vector < std::pair <float, std::string> >::iterator i;
for (/* auto */ i = results.begin (); i != results.end (); ++i)
i->first *= queryDistance;
return results;
}
void PhysicsSystem::setCurrentWater(bool hasWater, int waterHeight)
{
playerphysics->hasWater = hasWater;
if(hasWater){
playerphysics->waterHeight = waterHeight;
}
for(std::map<std::string,OEngine::Physic::PhysicActor*>::iterator it = mEngine->PhysicActorMap.begin(); it != mEngine->PhysicActorMap.end();it++)
{
it->second->setCurrentWater(hasWater, waterHeight);
}
}
btVector3 PhysicsSystem::getRayPoint(float extent)
{
//get a ray pointing to the center of the viewport
Ray centerRay = mRender.getCamera()->getCameraToViewportRay(
mRender.getViewport()->getWidth()/2,
mRender.getViewport()->getHeight()/2);
btVector3 result(centerRay.getPoint(extent).x,-centerRay.getPoint(extent).z,centerRay.getPoint(extent).y);
return result;
}
btVector3 PhysicsSystem::getRayPoint(float extent, float mouseX, float mouseY)
{
//get a ray pointing to the center of the viewport
Ray centerRay = mRender.getCamera()->getCameraToViewportRay(mouseX, mouseY);
btVector3 result(centerRay.getPoint(extent).x,-centerRay.getPoint(extent).z,centerRay.getPoint(extent).y);
return result;
}
bool PhysicsSystem::castRay(const Vector3& from, const Vector3& to)
{
btVector3 _from, _to;
_from = btVector3(from.x, from.y, from.z);
_to = btVector3(to.x, to.y, to.z);
std::pair<std::string, float> result = mEngine->rayTest(_from, _to);
return !(result.first == "");
}
std::pair<bool, Ogre::Vector3>
PhysicsSystem::castRay(const Ogre::Vector3 &orig, const Ogre::Vector3 &dir, float len)
{
Ogre::Ray ray = Ogre::Ray(orig, dir);
Ogre::Vector3 to = ray.getPoint(len);
btVector3 btFrom = btVector3(orig.x, orig.y, orig.z);
btVector3 btTo = btVector3(to.x, to.y, to.z);
std::pair<std::string, float> test = mEngine->rayTest(btFrom, btTo);
if (test.first == "") {
return std::make_pair(false, Ogre::Vector3());
}
return std::make_pair(true, ray.getPoint(len * test.second));
}
std::pair<bool, Ogre::Vector3> PhysicsSystem::castRay(float mouseX, float mouseY)
{
Ogre::Ray ray = mRender.getCamera()->getCameraToViewportRay(
mouseX,
mouseY);
Ogre::Vector3 from = ray.getOrigin();
Ogre::Vector3 to = ray.getPoint(200); /// \todo make this distance (ray length) configurable
btVector3 _from, _to;
// OGRE to MW coordinates
_from = btVector3(from.x, -from.z, from.y);
_to = btVector3(to.x, -to.z, to.y);
std::pair<std::string, float> result = mEngine->rayTest(_from, _to);
if (result.first == "")
return std::make_pair(false, Ogre::Vector3());
else
{
return std::make_pair(true, ray.getPoint(200*result.second)); /// \todo make this distance (ray length) configurable
}
}
void PhysicsSystem::doPhysics(float dt, const std::vector<std::pair<std::string, Ogre::Vector3> >& actors)
{
//set the DebugRenderingMode. To disable it,set it to 0
//eng->setDebugRenderingMode(1);
//set the movement keys to 0 (no movement) for every actor)
for(std::map<std::string,OEngine::Physic::PhysicActor*>::iterator it = mEngine->PhysicActorMap.begin(); it != mEngine->PhysicActorMap.end();it++)
{
OEngine::Physic::PhysicActor* act = it->second;
act->setMovement(0,0,0);
}
playerMove::playercmd& pm_ref = playerphysics->cmd;
pm_ref.rightmove = 0;
pm_ref.forwardmove = 0;
pm_ref.upmove = 0;
//playerphysics->ps.move_type = PM_NOCLIP;
for (std::vector<std::pair<std::string, Ogre::Vector3> >::const_iterator iter (actors.begin());
iter!=actors.end(); ++iter)
{
//dirty stuff to get the camera orientation. Must be changed!
if (iter->first == "player") {
playerphysics->ps.viewangles.x =
Ogre::Radian(mPlayerData.pitch).valueDegrees();
playerphysics->ps.viewangles.y =
Ogre::Radian(mPlayerData.yaw).valueDegrees() + 90;
pm_ref.rightmove = iter->second.x;
pm_ref.forwardmove = -iter->second.y;
pm_ref.upmove = iter->second.z;
}
}
mEngine->stepSimulation(dt);
}
std::vector< std::pair<std::string, Ogre::Vector3> > PhysicsSystem::doPhysicsFixed (
const std::vector<std::pair<std::string, Ogre::Vector3> >& actors)
{
Pmove(playerphysics);
std::vector< std::pair<std::string, Ogre::Vector3> > response;
for(std::map<std::string,OEngine::Physic::PhysicActor*>::iterator it = mEngine->PhysicActorMap.begin(); it != mEngine->PhysicActorMap.end();it++)
{
Ogre::Vector3 coord = it->second->getPosition();
if(it->first == "player"){
coord = playerphysics->ps.origin ;
}
response.push_back(std::pair<std::string, Ogre::Vector3>(it->first, coord));
}
return response;
}
void PhysicsSystem::addHeightField (float* heights,
int x, int y, float yoffset,
float triSize, float sqrtVerts)
{
mEngine->addHeightField(heights, x, y, yoffset, triSize, sqrtVerts);
}
void PhysicsSystem::removeHeightField (int x, int y)
{
mEngine->removeHeightField(x, y);
}
void PhysicsSystem::addObject (const Ptr& ptr)
{
std::string mesh = MWWorld::Class::get(ptr).getModel(ptr);
Ogre::SceneNode* node = ptr.getRefData().getBaseNode();
handleToMesh[node->getName()] = mesh;
OEngine::Physic::RigidBody* body = mEngine->createAndAdjustRigidBody(mesh, node->getName(), node->getScale().x, node->getPosition(), node->getOrientation());
mEngine->addRigidBody(body);
}
void PhysicsSystem::addActor (const Ptr& ptr)
{
std::string mesh = MWWorld::Class::get(ptr).getModel(ptr);
Ogre::SceneNode* node = ptr.getRefData().getBaseNode();
//TODO:optimize this. Searching the std::map isn't very efficient i think.
mEngine->addCharacter(node->getName(), mesh, node->getPosition(), node->getScale().x, node->getOrientation());
}
void PhysicsSystem::removeObject (const std::string& handle)
{
//TODO:check if actor???
mEngine->removeCharacter(handle);
mEngine->removeRigidBody(handle);
mEngine->deleteRigidBody(handle);
}
void PhysicsSystem::moveObject (const Ptr& ptr)
{
Ogre::SceneNode* node = ptr.getRefData().getBaseNode();
std::string handle = node->getName();
Ogre::Vector3 position = node->getPosition();
if (OEngine::Physic::RigidBody* body = mEngine->getRigidBody(handle))
{
// TODO very dirty hack to avoid crash during setup -> needs cleaning up to allow
// start positions others than 0, 0, 0
if(dynamic_cast<btBoxShape*>(body->getCollisionShape()) == NULL){
btTransform tr = body->getWorldTransform();
tr.setOrigin(btVector3(position.x,position.y,position.z));
body->setWorldTransform(tr);
}
else{
//For objects that contain a box shape.
//Do any such objects exist? Perhaps animated objects?
mEngine->boxAdjustExternal(handleToMesh[handle], body, node->getScale().x, position, node->getOrientation());
}
}
if (OEngine::Physic::PhysicActor* act = mEngine->getCharacter(handle))
{
// TODO very dirty hack to avoid crash during setup -> needs cleaning up to allow
// start positions others than 0, 0, 0
if (handle == "player")
{
playerphysics->ps.origin = position;
}
else
{
act->setPosition(position);
}
}
}
void PhysicsSystem::rotateObject (const Ptr& ptr)
{
Ogre::SceneNode* node = ptr.getRefData().getBaseNode();
std::string handle = node->getName();
Ogre::Quaternion rotation = node->getOrientation();
if (OEngine::Physic::PhysicActor* act = mEngine->getCharacter(handle))
{
//Needs to be changed
act->setRotation(rotation);
}
if (OEngine::Physic::RigidBody* body = mEngine->getRigidBody(handle))
{
if(dynamic_cast<btBoxShape*>(body->getCollisionShape()) == NULL)
body->getWorldTransform().setRotation(btQuaternion(rotation.x, rotation.y, rotation.z, rotation.w));
else
mEngine->boxAdjustExternal(handleToMesh[handle], body, node->getScale().x, node->getPosition(), rotation);
}
}
void PhysicsSystem::scaleObject (const Ptr& ptr)
{
Ogre::SceneNode* node = ptr.getRefData().getBaseNode();
std::string handle = node->getName();
if(handleToMesh.find(handle) != handleToMesh.end())
{
removeObject(handle);
addObject(ptr);
}
if (OEngine::Physic::PhysicActor* act = mEngine->getCharacter(handle))
act->setScale(node->getScale().x);
}
bool PhysicsSystem::toggleCollisionMode()
{
playerphysics->ps.move_type = (playerphysics->ps.move_type == PM_NOCLIP ? PM_NORMAL : PM_NOCLIP);
for(std::map<std::string,OEngine::Physic::PhysicActor*>::iterator it = mEngine->PhysicActorMap.begin(); it != mEngine->PhysicActorMap.end();it++)
{
if (it->first=="player")
{
OEngine::Physic::PhysicActor* act = it->second;
bool cmode = act->getCollisionMode();
if(cmode)
{
act->enableCollisions(false);
mFreeFly = true;
return false;
}
else
{
mFreeFly = false;
act->enableCollisions(true);
return true;
}
}
}
throw std::logic_error ("can't find player");
}
bool PhysicsSystem::getObjectAABB(const MWWorld::Ptr &ptr, Ogre::Vector3 &min, Ogre::Vector3 &max)
{
std::string model = MWWorld::Class::get(ptr).getModel(ptr);
if (model.empty()) {
return false;
}
btVector3 btMin, btMax;
float scale = ptr.getCellRef().mScale;
mEngine->getObjectAABB(model, scale, btMin, btMax);
min.x = btMin.x();
min.y = btMin.y();
min.z = btMin.z();
max.x = btMax.x();
max.y = btMax.y();
max.z = btMax.z();
return true;
}
void PhysicsSystem::updatePlayerData(Ogre::Vector3 &eyepos, float pitch, float yaw)
{
mPlayerData.eyepos = eyepos;
mPlayerData.pitch = pitch;
mPlayerData.yaw = yaw;
}
}