Robo's commands (cheat sheet)
move(); step forward · turnLeft(); / turnRight(); rotate
canMove() path ahead clear? · canMoveLeft() / canMoveRight()
atFlag() standing on the flag? · gemsLeft() gems still out there
paint(); paint the square Robo is on · say("hi"); talk on the radio
Walk over 💎 to collect · Walk over 🔑 to grab it · A 🔑 unlocks one 🚪 door