from Main.constants import *
import pygame


def cruiseControl(cruiseControl, horizontal_change, vertical_change, tractor_horizontal_index, tractor_vertical_index):
    if not cruiseControl:
        horizontal_change = 0
        vertical_change = 0
    if tractor_horizontal_index < 1 or tractor_horizontal_index >= HORIZONTAL_TILES_NUMBER - 1:
        horizontal_change = 0
    if tractor_vertical_index < 1 or tractor_vertical_index >= VERTICAL_TILES_NUMBER - 1:
        vertical_change = 0
    return horizontal_change, vertical_change


def manualTurning(event, tractor_horizontal_index, tractor_vertical_index, horizontal_change=0, vertical_change=0):
    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_LEFT and tractor_horizontal_index > 0:
            vertical_change = 0
            horizontal_change = -1
        elif event.key == pygame.K_RIGHT and tractor_horizontal_index < HORIZONTAL_TILES_NUMBER - 1:
            horizontal_change = 1
            vertical_change = 0
        elif event.key == pygame.K_UP and tractor_vertical_index > 0:
            vertical_change = -1
            horizontal_change = 0
        elif event.key == pygame.K_DOWN and tractor_vertical_index < VERTICAL_TILES_NUMBER - 1:
            vertical_change = 1
            horizontal_change = 0

    return horizontal_change, vertical_change