|id||Index of the mp_grid that is to be drawn|
This function will draw the specified mp_grid, marking free
cells as green and forbidden cells as red. This function is
essential as a debug tool but it should be noted that it is
very slow and only works when used in the draw event
of the instance.
The above code will draw the mp_grid indexed in the variable "grid" as a semi-transparent overlay (but only if the instance running the code has a depth lower than all the rest).