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I think this is more of a 3D math question over programming. I have a Kinematic Ridgidbody Main camera with a .03m sphere collider that is free roaming, looking around various large scene objects while mesh colliders. Currently i can see collisions, as all my OnCollisionEnter/Stay/Exit all throw debug logs. However i want to keep the camera from passing through the object and even bounce back a bit on the angle of reflection from the camera's angle of movement and the collision point's normal reality to the collision point. (I might have to settle with the angle of incidence from the camera itself if mesh object's geometry is too complex. As you can see with the code below I've been trying different things, and at low speeds, the camera bounces off the object at various angles given the mesh collider's state. I want to prevent pass-through of the object by the camera indefinitely.
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The reason the camera can pass through other objects is that it's kinematic. You could try changing it to a non-kinematic rigidbody and moving it by applying forces to it, but that could be a bit tricky to get right. A simpler option would be to keep the camera kinematic and use a combination of raycasting and Physics.CheckSphere. Before moving the camera, raycast to the point you want to move to and make sure you won't be colliding with anything. You can also use Physics.CheckSphere to determine if there is enough space at the destination for your camera's collider sphere to reside without touching other colliders. I tried to temporarly make the camera non kinematic, but i guess once its moving that wont really help. For some reason, the terrain works fine. Is that a special property of the floor that Unity handles or am I missing something?
Jun 09 '10 at 05:47 PM
Vince
Is the camera being controlled by the player? Or is it following something? There might be a premade script you could use (such as the First Person Controller http://unity3d.com/support/documentation/Manual/HOWTO-First%20Person%20Walkthrough.html).
Jun 10 '10 at 02:54 AM
Ehren
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