Lesson 11. The Siege

#castle creating function
#the minimum length of the walls is 20. if the walls are shorter the stairs won't be generated correctly
#the length of the walls has to be EVEN or the corners won't be generated correctly
#the recommended wall height is 4. Only then the creepers can get activated and explode
def castleBuilder(wallLength, wallHeight):
    wallLengthCopy = wallLength / 2
    builder.teleport_to(pos(-5, 0, 5))
    builder.set_origin()
    builder.mark()
    i = 0
    #the loop creating 3 layer wall around the player
    while i < 3:
        j = 0
        while j < 4:
            builder.move(FORWARD, wallLength)
            builder.raise_wall(MOSSY_STONE_BRICKS, wallHeight)
            builder.turn(RIGHT_TURN)
            j += 1
        wallLength += -2
        builder.move(RIGHT, 1)
        builder.move(FORWARD, 1)
        builder.mark()
        i += 1
    builder.move(UP, wallHeight - 1)
    builder.face(WEST)
    builder.move(BACK, 15)
    builder.mark()
    i = 0
    #the loop creating stairs
    while i < wallHeight - 1:
        builder.shift(1, -1, 0)
        builder.line(STONE_BRICK_STAIRS)
        i += 1
    builder.teleport_to_origin()
    builder.move(UP, wallHeight)
    builder.face(NORTH)
    builder.mark()
    i = 0
    #the loop creating corners
    while i < 4:
        j = 0
        while j < wallLengthCopy:
            builder.place(SEA_LANTERN)
            builder.move(FORWARD, 2)
            j += 1
        builder.turn(RIGHT_TURN)
        i += 1
player.on_chat("castle", castleBuilder)