Catch me if you can

Instructions:
There are two hunters in this game. Your goal as a hunter is to catch 2 preys before the other hunter by building walls to let yourself bouncing around. The game won't stop until one of the hunter catches 2 preys.

• Rule #1: The hunters move twice as fast as the prey, and it changes direction only by bouncing off a wall, which means you cannot control the moves of it.
• Rule #2: The preys, on the other hand, move randomly in whichever direction it wants provided it doesn't pass through a wall.
• Rule #3: The hunter catches the preys by building horizontal and vertical walls as its current position to get close to the prey and trap it.
• Rule #4: You can specify the number of walls that the hunters can build(N) and the time interval between building consecutive walls(W).

Hunter Red (A for vertical wall, S for horizontal wall)
Hunter Blue (K for vertical wall, L for horizontal wall)