Int E0 Fn 0002 - Pcrobots V1.41 - "scan" - Scan For Other Robots In The [g]

AX = 0002h
BX = direction (0-359 degrees)
CX = resolution (0-45 degrees)

Return: AX = status
FFFFh if nothing detected
else robot ID (0-19)
BX = range to detected robot

Notes: the scan searches within CX degrees to either side of the specified
direction
the scanner will see right through walls, but shells will not pass
through walls
this call also terminates the current robot's turn

See Also: AX=0000h,AX=0001h,AX=0003h