from OpenGL.GL import *
from editortool.map.mapdefs import TILE_WIDTH, TILE_HEIGHT, TILE_DEPTH, CHUNK_WIDTH, CHUNK_HEIGHT, CHUNK_DEPTH

class Tile:
  def __init__(self, chunk, x, y, z, tileIndex):
    self.tileId = 0
    self.chunk = chunk
    self.x = x
    self.y = y
    self.z = z
    
    self.posX = x * TILE_WIDTH + chunk.x * CHUNK_WIDTH * TILE_WIDTH
    self.posY = y * TILE_HEIGHT + chunk.y * CHUNK_HEIGHT * TILE_HEIGHT
    self.posZ = z * TILE_DEPTH + chunk.z * CHUNK_DEPTH * TILE_DEPTH

  def buffer(self, vertexBuffer):
    if self.z != 0:
      return
    # if self.x != 0 or self.y != 0 or self.z != 0:
    #     return  # Only buffer the tile at (0,0,0)

    # Center tile.
    x = self.posX - TILE_WIDTH / 2.0
    y = self.posY - TILE_HEIGHT / 2.0
    z = self.posZ - TILE_DEPTH / 2.0
    w = TILE_WIDTH
    h = TILE_HEIGHT
    d = TILE_DEPTH

    # Quad on the XY plane at z
    vertexBuffer.vertices.extend([
      x,     y,     z,  # bottom left
      x + w, y,     z,  # bottom right
      x + w, y + h, z,  # top right

      x,     y,     z,  # bottom left
      x + w, y + h, z,  # top right
      x,     y + h, z   # top left
    ])