2555F240-3CF4-4643-8B22-6D939A443066.png

    void OnGUI() {
        if (GUILayout.Button ("創建立方體", GUILayout.Height (50))) {
            var objCube = GameObject.CreatePrimitive (PrimitiveType.Cube);
            objCube.AddComponent<Rigidbody> ();
            objCube.name = "Cube";

            Renderer renderer = objCube.GetComponent<Renderer> ();
            renderer.material.color = Color.blue;
            objCube.transform.position = new Vector3 (0.0f, 10.0f, 0.0f);
        }

        if (GUILayout.Button ("創建球體", GUILayout.Height (50))) {
            var objSphere = GameObject.CreatePrimitive (PrimitiveType.Sphere);
            objSphere.AddComponent<Rigidbody> ();
            objSphere.name = "Sphere";

            Renderer renderer = objSphere.GetComponent<Renderer> ();
            renderer.material.color = Color.red;
            objSphere.transform.position = new Vector3 (0.0f, 10.0f, 0.0f);
        }
    }

【0】GameObject.CreatePrimitive()方法，用于創建一個原始對象。

public enum PrimitiveType
    {
        Sphere,
        Capsule,
        Cylinder,
        Cube,
        Plane,
        Quad
    }

【1】AddComponent<>()方法，用于給對象添加一個組件（腳本也是組件）。
【2】renderer.material.color，設置渲染材質的顏色或者貼圖。
【3】transform.position，設置對象的位置。