private void DoCollisionDetectionWithTerrain(IPhysicsObject physicsObject)
{
Vector3 position = physicsObject.GetPosition();
if (game.terrain.heightMapInfo.IsOnHeightmap(position))
{
float objectBottom = physicsObject.GetBoundingBox().Min.Y;
//Utility.BoundingBoxRenderer.Render(game, physicsObject.GetBoundingBox(), game.GraphicsDevice, game.worldCamera.ViewMatrix, game.worldCamera.ProjectionMatrix, Color.White);
Vector3 v = physicsObject.GetVelocity();
// In the bounding box, the bottom corners have indices 2,3,6,7. We're
// interested in checking just the collisions of the bottom corners of
// the object with the terrain.
Vector3[] corners = physicsObject.GetBoundingBox().GetCorners();
int[] bottomCorners = { 2, 3, 6, 7 };
foreach (int i in bottomCorners)
{
float terrainElevation;
Vector3 terrainNormal;
if (game.terrain.heightMapInfo.IsOnHeightmap(corners[i]))
{
game.terrain.heightMapInfo.GetHeightAndNormal(corners[i], out terrainElevation, out terrainNormal);
if (corners[i].Y <= terrainElevation)
{
HandleCollisionWithSurface(physicsObject, terrainNormal, 0.7f);
// Notify the physics object that a collision with the terrain had occurred.
physicsObject.HandleCollisionWithTerrain();
return;
}
}
}
}
}
