public void Test_New()
{
var mat = new PhysicsMaterial ();
Assert.AreEqual (1, mat.Restitution);
Assert.AreEqual (0.5f, mat.Friction);
Assert.AreEqual (0, mat.RollingFriction);
Assert.AreEqual (0, mat.LinearDamping);
Assert.AreEqual (0, mat.AngularDamping);
}
/// <summary>
/// コンストラクター
/// </summary>
/// <remarks>
/// デフォルトはスタティック オブジェクト。
/// </remarks>
public PhysicsBody()
{
var wld = Physics2D.GetInstance ().GetWorld () as FarseerPhysics.Dynamics.World;
if (wld == null) {
throw new InvalidOperationException ("Physics world is not created");
}
this.mask = 0xffffffff;
this.shape = null;
this.mat = null;
this.hash = -0x12345678;
// 本当はアタッチされるタイミングで Box2D.World に追加したいが、
// 無理みたいなので・・・
this.body = new Body (wld, this);
}
/// <summary>
/// 剛体物理オブジェクトを作成するコンストラクター
/// </summary>
public RigidBody()
{
this.shapes = new List<CollisionShape> ();
this.offsets = new List<Vector3> ();
this.material = null;
this.offset = new Vector3 (0, 0, 0);
this.collideWith = -1;
this.ignoreWith = 0;
this.mass = 1;
this.useGravity = true;
this.useContactResponse = true;
this.useCCD = true;
this.linearFactor = new Vector3 (1, 1, 1);
this.angularFactor = new Vector3 (1, 1, 1);
this.rigidBody = new BulletSharp.RigidBody(new BulletSharp.RigidBodyConstructionInfo (mass,
new DefaultMotionState (),
new CompoundShape(true)));
}
private static Node CreateFloor(string name, int x, int y, int width, int height, Quaternion rot)
{
var spr = new Sprite (width, height);
spr.AddTexture (Resource.GetTexture ("media/Rectangle-160x40.png"));
var col = new BoxCollision (spr.Width / 2, spr.Height / 2, 0);
col.SetOffset (spr.Width / 2, spr.Height / 2, 0);
var body = new PhysicsBody ();
var mat = new PhysicsMaterial ();
body.Shape = col;
body.Material = mat;
var node = new Node (name);
node.SetTranslation (x, y, 0);
node.SetRotation (rot);
node.Attach (spr);
node.Attach (col);
node.Attach (body);
return node;
}
/// <summary>
/// 物理特性の変更
/// </summary>
/// <remarks>
/// コリジョンの物理材質を変更します。
/// 値は次回 <see cref="OnPhysicsUpdate"/> が呼ばれたタイミングで物理エンジンに反映されます。
/// 物理特性に <c>null</c> に設定すると例外が発生します。
/// </remarks>
/// <param name="mat">物理特性</param>
public void SetMaterial(PhysicsMaterial mat)
{
if (mat == null) {
throw new ArgumentNullException ("Material is null");
}
this.mat = mat;
}
public void Test_Sphere_to_Box()
{
var mat = new PhysicsMaterial ();
mat.Restitution=1;
var sph = new Node ("Sphere");
sph.Attach(new RigidBody ());
sph.RigidBody.Mass = 1;
sph.RigidBody.Material = mat;
sph.RigidBody.AddShape( new SphereShape (1));
var box = new Node ("Box");
box.Attach(new RigidBody ());
box.RigidBody.Mass = 0;
box.RigidBody.Material = mat;
box.RigidBody.AddShape(new BoxShape (1,1,1));
var wld = new World ("");
wld.AddChild (sph);
wld.AddChild (box);
wld.PhysicsSimulator.SetGravity (0, -9.8f, 0);
sph.Translate (0, 10, 0);
for (var i = 0; i < 100; i++) {
wld.PhysicsUpdate (33);
Debug.WriteLine ("Sphere = {0}, Box = {1}", sph.Position, box.Position);
}
wld.Destroy ();
}
