Unity 3d statics how to#
Unity 3d statics code#

Whereas trigger function works a little different. Unity does not want to detect collision between two static objects so normal collision is detected only if one of the Gameobject is a movable by physics. Kinematic Rigidbody denotes that the object is not moved by physics but can be moved by script or animation. Rigidbody collider denotes a moving object like a ball. Consider static colliders as object that donвЂ™t move like wall. If you did not understand the matrix completely then here is a simple comparison to help you. Knowing these basic things about colliders will help you set them up easily in your game. In all the other cases the on trigger enter is called. Trigger collision doesnвЂ™t work if both the colliders are static colliders. The collision matrix is a little different in the case of triggers. You have to use the OnTriggerEnter function if the collider is Marked as a trigger. With that, you can know if a collision has happened without actually creating a collision. But the time of one object entering another objectвЂ™s space can trigger a function. It allows the other object to pass through it. When you mark a collider as a trigger, it no longer behaves like a solid object. Ref: Unity docs Unity collider marked as Trigger Find the collision matrix for unity colliders in the image below.

If you use the OnCollisionEnter function in any of the above cases, the function will not be called during a Collision. ItвЂ™s the same case with two kinematic Rigidbody. That is, if you have two Gameobject marked as static colliders then collision between them will not be detected. Unity will detect a collision only if one of the objects is a Rigidbody. The behavior of the object changes if it is marked as a trigger. In Unity you can mark a collider as trigger using the check box in the inspector window. The performance loss is very less in moving a kinematic Rigidbody compared to a Static object. The main reason to use a kinematic Rigidbody is to tell Unity that the object does not respond to forces but will be movable by script during runtime. So, the next question is then why use a kinematic Rigidbody. Kinematic rigidbody colliderДЄ kinematic Rigidbody is a Rigidbody that behaves like a static object. Check the screenshot for how a Rigidbody is attached to a game object. In Unity, Rigidbody is used on an object which will move a lot during gameplay. Rigidbody colliderДЄ Rigidbody collider works like a real-world object. Though, they can be moved using transform, moving a static collider leads to performance loss during runtime. They do not move when an object Collides to with them. If a Rigidbody is not attached to a collider then itвЂ™s a static collider. Do not confuse static Gameobject with the static collider. Static colliders are considered to be non-moving objects by Unity. The collider used in all these are the same, the type is for how the object to which the collider is added behaves when collided with. Further, there are types of colliders, static collider, Rigidbody collider, kinematic Rigidbody collider, etc. All your codes and collision detection will change for 2D and 3D. So, you have to be very careful which collider you are using. Unity has divided the colliders into 2D and 3D.

Unity 3d statics how to#

If you are totally new to Unity, check out how to learn Unity. In this post, we will see how to use colliders in Unity and where to use OnCollisionEnter and OnTriggerEnter functions.

Unity 3d statics code#

Without a basic understanding of how Unity Colliders work, it will be very difficult to code the game mechanics. Also, you need to understand is how colliders and Rigidbody work together to efficiently use them. In Unity, a collider can be added to any game object as a component.

Detecting and utilizing the collision is implemented in a different manner in different game engines. Collision detection is required for all types of games.