This function add acceleration to the player. Acceleration change is caped to +-10.0 units per call. This function can only be used in Voxel_Step().
x,y,z : Acceleration vector to add to the current player acceleration value. Values are caped to +-10 units per call.
A boolean result with the true value if the function succeeded, false otherwise.
To do.
// Listing #1: Todo.
To do