newton collision

mrbig · Post by **mrbig** » Tue May 18, 2004 8:54 pm

my boxes are not hitting the map or eney of the other objects on the map
they don't fall throu the floor but they like stop above the floor

Code: Select all

video::IVideoDriver* driver = device->getVideoDriver();
	scene::ISceneManager* sm = device->getSceneManager();
	quakeLevelMesh = sm->getMesh("stage1.bsp");;
	
	if (quakeLevelMesh)
		quakeLevelNode = sm->addOctTreeSceneNode(quakeLevelMesh->getMesh(0));
	NewtonCollision *g_newtonmap = NewtonCreateTreeCollision(nWorld, NULL);
	NewtonTreeCollisionBeginBuild(g_newtonmap);
	int cMeshBuffer, j;
	int v1i, v2i, v3i;
	scene::IMeshBuffer *mb;

	float vArray[9]; // vertex array (3*3 floats)

	int tmpCount = 0;

	for (cMeshBuffer=0; cMeshBuffer<quakeLevelMesh->getMesh(0)->getMeshBufferCount(); cMeshBuffer++)
	{	
		mb = quakeLevelMesh->getMesh(0)->getMeshBuffer(cMeshBuffer);

		video::S3DVertex2TCoords* mb_vertices = (irr::video::S3DVertex2TCoords*)mb->getVertices();

		u16* mb_indices  = mb->getIndices();

		// add each triangle from the mesh
		for (j=0; j<mb->getIndexCount(); j+=3)
		{
			v1i = mb_indices[j];
			v2i = mb_indices[j+1];
			v3i = mb_indices[j+2];
	
			vArray[0] = mb_vertices[v1i].Pos.X;
			vArray[1] = mb_vertices[v1i].Pos.Y;
			vArray[2] = mb_vertices[v1i].Pos.Z;
			vArray[3] = mb_vertices[v2i].Pos.X;
			vArray[4] = mb_vertices[v2i].Pos.Y;
			vArray[5] = mb_vertices[v2i].Pos.Z;
			vArray[6] = mb_vertices[v3i].Pos.X;
			vArray[7] = mb_vertices[v3i].Pos.Y;
			vArray[8] = mb_vertices[v3i].Pos.Z;

			NewtonTreeCollisionAddFace(g_newtonmap, 3, (float*)vArray, 12, 1);
		}

	}
	NewtonTreeCollisionEndBuild(g_newtonmap, 0);
	NewtonBody *g_newtonmapbody = NewtonCreateBody(nWorld, g_newtonmap);
// set the newton world size based on the bsp size
	float boxP0[3]; 
	float boxP1[3]; 
	float matrix[4][4]; 
	NewtonBodyGetMatrix (g_newtonmapbody, &matrix[0][0]); 
	NewtonCollisionCalculateAABB (g_newtonmap, &matrix[0][0],  &boxP0[0], &boxP1[0]); 
	// you can pad the box here if you wish
	//boxP0.y -= somevalue; 
	//boxP1.y += somevaluef; 
	NewtonSetWorldSize (nWorld, (float*)boxP0, (float*)boxP1);
			if (quakeLevelNode)
		{
			quakeLevelNode->setPosition(core::vector3df(-1300,-70,-1249));
			quakeLevelNode->setVisible(true);
			
			// create map triangle selector
			mapSelector = sm->createOctTreeTriangleSelector(quakeLevelMesh->getMesh(0),
				quakeLevelNode, 128);

			// set additive blending if wanted
			if (additive)
				quakeLevelNode->setMaterialType(video::EMT_LIGHTMAP_ADD);
		}

mrbig · Post by **mrbig** » Tue May 18, 2004 9:05 pm

don't know what happend to that pic

jox · Post by **jox** » Tue May 18, 2004 9:16 pm

The image you included is: http://iron-core-studios.cjb.net/phy.bmp

1. bmp format doesn't work in web browsers
2. that domain doesn't exist

Unarekin · Post by **Unarekin** » Wed May 19, 2004 1:08 am

Try changing the height of the box collision primitive used for the boxes.

Guest · Post by **Guest** » Wed May 19, 2004 9:44 am

Try this

vArray[0] = mb_vertices[v1i].Pos.X;
vArray[1] = mb_vertices[v1i].Pos.Y;
vArray[2] = mb_vertices[v1i].Pos.Z;
vArray[6] = mb_vertices[v2i].Pos.X;
vArray[7] = mb_vertices[v2i].Pos.Y;
vArray[8] = mb_vertices[v2i].Pos.Z;
vArray[3] = mb_vertices[v3i].Pos.X;
vArray[4] = mb_vertices[v3i].Pos.Y;
vArray[5] = mb_vertices[v3i].Pos.Z;

Guest · Post by **Guest** » Wed May 19, 2004 4:37 pm

comment out the following line:

quakeLevelNode->setPosition(core::vector3df(-1300,-70,-1249));

and set your camera position different. if you really want to reset the position of the level, you have to pass these changes to newton when reading the vertices

mrbig · Post by **mrbig** » Wed May 19, 2004 7:09 pm

thx that did it