Graphics Reference
In-Depth Information
Getting ready
For our physics engine, we will use BulletSharp, a .NET wrapper of the popular
Bullet
Physics
library used in many AAA game and movie titles. Consider the following steps:
1.
Download the
BulletSharp
library from
https://code.google.com/p/
bulletsharp/
. It is also included in the
\External
folder within the downloadable
content for this topic.
2.
Add a reference to the
\External\bulletsharp-2.82\Release SharpDX\
BulletSharp.dll
assembly.
Referencing the
SharpDX
version of the
BulletSharp
assembly
uses the existing
SharpDX
vector and matrix structures.
3.
We use an example scene to demonstrate the physics engine. This is available
within the downloadable content.
4.
A debug renderer class,
PhysicsDebugDraw
, is included in the completed project
for debugging the rigid body shapes and constraints. This depends on
.\Shaders\
PhysicsDebug.hlsl
and the
BufferedDebugDraw
class.
5.
Finally, we will need a project that has the
MeshRenderer
class available.
How to do it…
We will begin by loading our 3D scene and generate their corresponding rigid bodies in
the Bullet Physics Library.
1.
Add the
PhysicsScene1.fbx
3D scene to the project and set Build Action
to MeshContentTask.
2.
At the start of
D3DApp.Run
where we initialize our renderers, load
PhysicsScene1.cmo
(the compiled mesh object file) and create the
MeshRenderer
instances, as follows:
// Create and initialize the mesh renderer
var loadedMesh =
Common.Mesh.LoadFromFile("PhysicsScene1.cmo");
List<MeshRenderer> meshes = new List<MeshRenderer>();
meshes.AddRange(from mesh in loadedMesh
select ToDispose(new MeshRenderer(mesh)));
foreach (var m in meshes) {
m.Initialize(this);
m.World = Matrix.Identity;
}
var meshWorld = Matrix.Identity;
