#   create a field here : 1: add tiles, 2: place them
import pygame

from area.constants import WIDTH,HEIGHT,FIELD_WIDTH,FIELD_HEIGHT,TILE_SIZE,GREY,ROWS,COLS
from tile import Tile

tiles = []

fieldX = (WIDTH-FIELD_WIDTH)/2
# in center of the screen
fieldY = 100

# move field elements to field position

def positionFieldElements():
    for t in tiles:
        t.x += fieldX
        t.y += fieldY


def createTiles():
    for y in range(0, COLS):
        for x in range(0, ROWS):
            tile = Tile(x*TILE_SIZE, y*TILE_SIZE)
            tile.randomizeContent()
            tiles.append(tile)
    positionFieldElements()
    return tiles

def createField(win):
    createTiles()
    for t in tiles:
        image = pygame.image.load(t.image).convert()
        image = pygame.transform.scale(image, (TILE_SIZE, TILE_SIZE))
        win.blit(image, (t.x, t.y))
        pygame.display.flip()
        

def drawWindow(win):
    win.fill(GREY)
    createField(win)
    pygame.display.flip()
    

#experimental:
# def update_tiles(win, tractor):
#     tiles = createTiles()
#     for tile in tiles:
#         if tile.x == tractor.previous_x and tile.y == tractor.previous_y:
#             tile.x = tractor.x
#             tile.y = tractor.y

#             if tile.image is not None:
#                 new_tile = Tile(tile.x, tile.y)
#                 new_tile.image = tile.image


#                 tiles.append(new_tile)

#                 image = pygame.image.load(tile.image).convert()
#                 image = pygame.transform.scale(image, (TILE_SIZE, TILE_SIZE))
#                 win.blit(image, (tile.x + fieldX-1, tile.y + fieldY-1))



def get_tile_coordinates(index):
    if index < len(tiles):
        tile = tiles[index]
        return tile.x, tile.y
    else:
        return None