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Fix ground alignment and box dimensions in Jitter2 example #320

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Fix ground alignment and box dimensions in Jitter2 example #320

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20 changes: 13 additions & 7 deletions examples/code-only/Example19_Jitter2Physics/Program.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -34,18 +34,24 @@ void Start(Scene rootScene)

PhysicsWorld.Init();

const float groundBoxDim = 15.0f;

// ground Entity setup
groundEntity = game.Create3DPrimitive(PrimitiveModelType.Plane);
groundEntity.Transform.Position = new Vector3(-10, -10, -10);
groundEntity.Transform.Scale = new Vector3(15, 0.5f, 15);
groundEntity.Transform.Scale = new Vector3(groundBoxDim, 1, groundBoxDim);
var groundPosition = groundEntity.Transform.Position;
groundEntity.Scene = rootScene;

// ground body setup
groundBody = PhysicsWorld.world.CreateRigidBody();
groundBody.MotionType = MotionType.Static;
groundBody.AddShape(new BoxShape(new JVector(15, .5f, 15)));
groundBody.Position = new JVector(groundPosition.X, groundPosition.Y, groundPosition.Z);
groundBody.AddShape(new BoxShape(groundBoxDim));

// Physics box is centered; shift down so its top matches the plane.
groundBody.Position = new JVector(groundPosition.X,
groundPosition.Y - 0.5f * groundBoxDim,
groundPosition.Z);

// spawning cubes
for (int i = 0; i <= 150; i++)
Expand All @@ -56,14 +62,14 @@ void Start(Scene rootScene)
});
var cubePosition = new Vector3(-10, 10 + i * 2, -10);

ent.Transform.Position = cubePosition;
ent.Transform.Scale = new Vector3(.5f);
ent.Transform.Position = cubePosition;
ent.Transform.Scale = new Vector3(0.5f);
ent.Scene = rootScene;

//cube body setup
var body = PhysicsWorld.world.CreateRigidBody();
body.AddShape(new BoxShape(0.25f));
body.SetMassInertia(1f);
body.AddShape(new BoxShape(0.5f));
body.SetMassInertia(1f);
body.Position = new JVector(cubePosition.X, cubePosition.Y, cubePosition.Z);

cubeEntities.Add(ent);
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