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What is the default physics material in Unity?
Unity’s internal, default physics material has no bounce at all. Meaning every object will not bounce unless your override the default physics material or apply a physics material to the objects in your scene with a bounciness value higher than 0.
How to calculate bounce angle in three dimensions?
In a perfectly elastic, frictionless collision, v′ = w − u; that is, the motion is reflected about the normal at the point of collision, as in the diagram given in Bill’s answer. This approach works just the same in three dimensions too.
How do you calculate bounce angle in C #?
See the link for an explanation of how to compute it. The dot product n · n evaluates to the square of the length of the normal vector; if you always keep your normals in the form of unit vectors then n · n = 1 and you can omit the division.
Why do you write special case code for bounce angle?
You might think that because your walls are aligned with the coordinate axes that it makes sense to write special case code (for a vertical wall, negate the x-coordinate of the velocity; for a horizontal wall, negate the y-coordinate of the velocity).
What do you use to stop object from Rolling in Unity?
This is called rolling resistance. Unity cannot simulate this behaviour accurately, so instead artificial stopping forces must be used. In Unity the best force to use to stop an object from rolling forever is “angular drag”.
What is Min penetration for penalty in Unity?
Most physics engines have some kind of parameter dictating how much two objects can be interpenetrating or intersecting until they are pushed away from one another. This parameter is called Min Penetration For Penalty in Unity.
When do you need to update the physics engine?
When writing code that moves, rotates, or scales rigidbodies, it is important to keep this in the FixedUpdate loop. Writing this code in the Update loop will potentially lead to unstable results, since the Update function may be called at 1000 Hz, while the physics engine and the FixedUpdate function are each called at 50 Hz by default.