Excellent! We'll now move on to shooting laser beams.
A robot can shoot a laser beam in the direction it is facing. A laser beam is visualized with asterisks (*) and can be either horizontal:
- - - - * * A<- - - - - - - B<-
or vertical:
- Av- - - * - - - * - - - * B<-
We'll need four helper functions: one for shooting in each direction (left, right, up, or down). We'll start with shooting left.
Write a laser_shoot_left(board, robot, lives_left) function that presents shooting left. We'll use this function when the shooting robot is facing left. It should decrease lives_left of the robot (if there is one on the left of robot, in the same row). It should put a '*' in those places on left of the robot which are empty ('-') to reflect where the laser beam was shot.
Example 1: no hit
- - - - * * A<- - - - - - - B<-
Example 2: robot B hit
- - - - * B^* A< - - - - - - - -
The get_position() and get_opponent_name() helper functions may come in handy here as well, so we've put them in the template code.
For each field with a vertical left laser beam, perform the following check:
if board[robot_row][i] == get_opponent_name(robot): lives_left[get_opponent_name(robot)] -= 1 else: board[robot_row][i] = '*'
