Unity3d向菜单项中的对象添加RigidBody

Question

I write external script for Unity3d and I have one problem. This problem is adding RigidBody to the object in MenuItem. Here's my code:

[MenuItem("NewTool/Physics/Cube (RigidBody)", false, 10)]
static void CubePhysButton(MenuCommand menuCommand) {

    GameObject gameCubePhys = GameObject.CreatePrimitive(PrimitiveType.Cube);
    Rigidbody cubePhys = gameCubePhys.GetComponent<Rigidbody>();
    cubePhys.AddForce(1, 1, 1);
    GameObjectUtility.SetParentAndAlign(gameCubePhys, menuCommand.context as GameObject);
    Undo.RegisterCreatedObjectUndo(gameCubePhys, "Create " + gameCubePhys.name);
    Selection.activeGameObject = gameCubePhys;


}

Here is Unity3d log:

MissingComponentException: There is no 'Rigidbody' attached to the "Cube" game object, but a script is trying to access it. You probably need to add a Rigidbody to the game object "Cube". Or your script needs to check if the component is attached before using it. UnityEngine.Rigidbody.AddForce (Vector3 force, ForceMode mode) UnityEngine.Rigidbody.AddForce (Single x, Single y, Single z) (at C:/buildslave/unity/build/Runtime/Dynamics/ScriptBindings/Dynamics.bindings.cs:171) CrossX.CubePhysButton (UnityEditor.MenuCommand menuCommand) (at Assets/Editor/CrossX.cs:68)

How do I solve this problem?

Answer 1

GameObject.CreatePrimitive creates a GameObject with a Mesh Renderer, Mesh Filter, and Collider. It does not add a RigidBody. Simply add one yourself:

GameObject gameCubePhys = GameObject.CreatePrimitive(PrimitiveType.Cube);
Rigidbody cubePhys = gameCubePhys.AddComponent<Rigidbody>();