Tutorial sur les collisions

GuyTina · Post by **GuyTina** » Mon Feb 28, 2005 10:52 am

Bonjour tout le Monde.

Avez-vous d'autre tutoriaux ou demos sur les collisions?

Merci beaucoup

Cordialement

gromito · Post by **gromito** » Mon Feb 28, 2005 11:07 am

un code que j ai ecrit qui permet les collisions et le ramassage de plusieurs boites lorsque l one st a proximité et qu on les vise.

J ai mis quelques commentaires sur le code.

Code: Select all

#include <irrlicht.h>

using namespace irr;
using namespace video;
using namespace scene;
using namespace core;
using namespace gui;

char sbuffer[50];
IrrlichtDevice *device=0;

//Ajout de la gestion des évenements
class MyEventReceiver : public IEventReceiver
{
    public:
        virtual bool OnEvent(SEvent event)
        {
            if(event.EventType==EET_MOUSE_INPUT_EVENT) {
                if(event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN) {
                    //Action lors du clique gauche
                    printf("click!\n");
                }
            }
            return true;
        }
};                    

int main()
{
    bool munition1 = true;
    bool munition2 = true;
    bool munition3 = true;
    
    MyEventReceiver receiver;

    //Creation de la fenetre d'affichage
    device = createDevice(EDT_OPENGL, dimension2d<s32>( 800, 600), 16, false, false, false);
    //Gestionnaire de video	
    IVideoDriver* driver = device->getVideoDriver();
	//gestionnaire de video
    ISceneManager* smgr = device->getSceneManager();
    //gestionnair e du GUI
    IGUIEnvironment* guienv = device->getGUIEnvironment();
    
	//Ajout de texte à l'ecran
    guienv->addStaticText( L"demo de gromito", rect<int>( 10, 10, 200, 22), true);

    //Chargement de la map
	IAnimatedMesh* mapmesh = smgr->getMesh("maps/niveau01.3DS");
	IAnimatedMeshSceneNode* map = smgr->addAnimatedMeshSceneNode( mapmesh );
	map->setMaterialTexture( 0, driver->getTexture("maps/Wall06.jpg"));
	
	//Chargement munitions 1	
    IAnimatedMesh* ammomesh1 = smgr->getMesh("maps/mp.3ds");
	IAnimatedMeshSceneNode* ammo1=smgr->addAnimatedMeshSceneNode(ammomesh1);
    ammo1->setPosition(vector3df(0,20,500));
    ammo1->setScale( vector3df( 2, 2, 2));

	//Chargement munitions 2	
    IAnimatedMesh* ammomesh2 = smgr->getMesh("maps/mp.3ds");
	IAnimatedMeshSceneNode* ammo2=smgr->addAnimatedMeshSceneNode(ammomesh2);
    ammo2->setPosition(vector3df(0,20,100));
    ammo2->setScale( vector3df( 2, 2, 2));
    
	//Chargement munitions 3	
    IAnimatedMesh* ammomesh3 = smgr->getMesh("maps/mp.3ds");
	IAnimatedMeshSceneNode* ammo3=smgr->addAnimatedMeshSceneNode(ammomesh3);
    ammo3->setPosition(vector3df(500,20,0));
   ammo3->setScale( vector3df( 2, 2, 2));
    
    //Chargement d'un mechant
    IAnimatedMesh* persomesh = smgr->getMesh("maps/sydney.md2");
    IAnimatedMeshSceneNode* perso = smgr->addAnimatedMeshSceneNode(persomesh);
    perso->setScale( vector3df( 2, 2, 2));
    perso->setPosition(vector3df( -178, -135, -3259));
    perso->setMaterialTexture( 0, driver->getTexture("maps/sydney.bmp"));
    perso->setMD2Animation( EMAT_STAND);	

	//Ajout de la source de la lumiere
    map->setMaterialFlag(EMF_LIGHTING, false);
    ammo1->setMaterialFlag(EMF_LIGHTING, false);
    ammo2->setMaterialFlag(EMF_LIGHTING, false);
    ammo3->setMaterialFlag(EMF_LIGHTING, false);
    perso->setMaterialFlag( EMF_LIGHTING, false);


	//Ajout de la camera
    ICameraSceneNode* camera=smgr->addCameraSceneNodeFPS();
	camera->setPosition(vector3df(100,100,0));    //Positionnement de la camera
	camera->setFarValue( 10000);

	//Gestion des collisions	
	IMetaTriangleSelector* metaselector;
	metaselector = smgr->createMetaTriangleSelector();
	
    //Collisions entre la camera et la map
    ITriangleSelector* mapselector = smgr->createOctTreeTriangleSelector(mapmesh->getMesh(0), map, 128);
	metaselector->addTriangleSelector(mapselector);
	mapselector->drop();
		
	//Collision entre la camera et munitions1
	ITriangleSelector* ammoselector1 = smgr->createTriangleSelector(ammomesh1->getMesh(0), ammo1);
	metaselector->addTriangleSelector(ammoselector1);
	ammoselector1->drop();
	
	//Collision entre la camera et munitions2
	ITriangleSelector* ammoselector2 = smgr->createTriangleSelector(ammomesh2->getMesh(0), ammo2);
	metaselector->addTriangleSelector(ammoselector2);
	ammoselector2->drop();
	
	//Collision entre la camera et munitions3
	ITriangleSelector* ammoselector3 = smgr->createTriangleSelector(ammomesh3->getMesh(0), ammo3);
	metaselector->addTriangleSelector(ammoselector3);
	ammoselector3->drop();
	
	//Collision entre la camera et le perso
	ITriangleSelector* persoselector = smgr->createTriangleSelector( persomesh->getMesh(0), perso);
	metaselector->addTriangleSelector(persoselector);
	persoselector->drop();

	ISceneNodeAnimator* anim = smgr->createCollisionResponseAnimator(
		metaselector, camera, core::vector3df(30,50,30),
		vector3df(0,-100,0), 100.0f, vector3df(0,50,0));
	camera->addAnimator(anim);
	anim->drop();	
	//Curseur non visible
	device->getCursorControl()->setVisible(false);
	
	//Ajout de l'image de la crosshair
	ITexture* images = driver->getTexture("maps/crosshair.bmp");
    driver->makeColorKeyTexture(images,position2d<s32>(0,0));


    
	while(device->run())
	{
		driver->beginScene(true, true, video::SColor(0,200,200,200));
        //Dessin de la scene
        smgr->drawAll();
	    //Ajout de la crosshair
        position2d<s32> m = device->getCursorControl()->getPosition();
        driver->draw2DImage(images,m, rect<s32>(0,0,16,16), 0, SColor(100,255,255,255), true);
        //Dessin du GUI 
	    guienv->drawAll();
        //Fin de la scene				
	    driver->endScene();
       
       //Calcul de la collision entre le perso et les munitions
              vector3d<f32> direction = camera->getTarget()-camera->getPosition();
              direction.normalize();
              line3d<f32> bullet;
              bullet.start = camera->getPosition();
              bullet.end = camera->getPosition()+direction * 100;		
              triangle3d<f32> dummy;
              vector3d<f32> mapcollision;
              vector3d<f32> modelcollision;
              bool gotmodel1 = smgr->getSceneCollisionManager()->getCollisionPoint(bullet,ammoselector1,modelcollision,dummy);
              bool gotmodel2 = smgr->getSceneCollisionManager()->getCollisionPoint(bullet,ammoselector2,modelcollision,dummy);
              bool gotmodel3 = smgr->getSceneCollisionManager()->getCollisionPoint(bullet,ammoselector3,modelcollision,dummy);		
              if(gotmodel1){
		           printf("ramassage arme");		
		           munition1 = false;
		           ammo1->setPosition(vector3df( 10000, 10000, 10000));
    		  }
    		  if(gotmodel2){
		           printf("ramassage arme");		
		           munition2 = false;
		           ammo2->setPosition(vector3df( 10000, 10000, 10000));
    		  }
    		  if(gotmodel3){
		           printf("ramassage arme");		
		           munition3 = false;
		           ammo3->setPosition(vector3df( 10000, 10000, 10000));
    		  }
   	   	
       vector3df<f32> cam_position;
   	   cam_position = camera->getPosition();
	   int len = sprintf(sbuffer,"Position camera: %f %f %f\n \0", cam_position.X,cam_position.Y,cam_position.Z);
	   //printf("len: %d - %s", len, sbuffer);            
		

	}
	device->drop();	
	return 0;
}

en espérant que ca va t aider.

Remerciements... · Post by **Remerciements...** » Mon Feb 28, 2005 12:09 pm

Bonjour tout le Monde.

Je te remercie beaucoup pour ta réponse et surtout pour ton code qui va m'etre tres utile.

En été il fait tres chaud dans ta ville ,j'ai de la famille à Pont du Chateau,moi je suis pres de Nancy...

Je te remercie.

Cordialement

GabySoft · Post by **GabySoft** » Sat Mar 05, 2005 12:11 pm

Excuse me, this works in the v. 0.8 ?

gromito · Post by **gromito** » Mon Mar 07, 2005 10:40 am

yes but you just change

Code: Select all

ISceneNodeAnimator* anim = smgr->createCollisionResponseAnimator(
      metaselector, camera, core::vector3df(30,50,30),
      vector3df(0,-100,0), 100.0f, vector3df(0,50,0));

en

Code: Select all

ISceneNodeAnimator* anim = smgr->createCollisionResponseAnimator(
      metaselector, camera, core::vector3df(30,50,30),
      vector3df(0,-100,0), vector3df(0,50,0), 100.0f);

that's all