naja/widgets/robot.py

   1 """Widget to draw the player on the screen"""
   2
   3 import pygame.locals as pgl
   4
   5 from naja.constants import PLAYER_SIZE, BIT_SIZE, TILE_SIZE, BITS
   6 from naja.events import InvalidateTheWorld
   7 from naja.resources import resources
   8 from naja.resources.mutators import EIGHT_BIT
   9 from naja.widgets.base import Widget
  10
  11 IMG_MAP = {
  12         BITS.CYAN: 'board/robot_cyan.png',
  13         BITS.YELLOW: 'board/robot_yellow.png',
  14         BITS.MAGENTA: 'board/robot_magenta.png',
  15         }
  16
  17
  18 class RobotWidget(Widget):
  19     """Widget which holds a tile on the game board."""
  20     def __init__(self, state):
  21         pos = (state.player.position[0] * TILE_SIZE[0] + 32,
  22                state.player.position[1] * TILE_SIZE[1] + BIT_SIZE[1])
  23         super(RobotWidget, self).__init__(pos, PLAYER_SIZE)
  24         self.state = state
  25
  26     def prepare(self):
  27         # Look up the required bits on the board location
  28         self.pos = (self.state.player.position[0] * TILE_SIZE[0] + 32,
  29                     self.state.player.position[1] * TILE_SIZE[1] + BIT_SIZE[1])
  30         self.surface = resources.get_image('board/robot.png',
  31                                            transforms=(EIGHT_BIT,))
  32         for bit, img_name in IMG_MAP.iteritems():
  33             if self.state.player.bits.check_bit(bit):
  34                 bit_img = resources.get_image(img_name,
  35                                               transforms=(EIGHT_BIT,))
  36                 self.surface.blit(bit_img, (0, 0))
  37
  38     def draw(self, surface):
  39         surface.blit(self.surface, self.rect)
  40
  41     def handle_event(self, ev):
  42         if ev.type == pgl.KEYDOWN:
  43             if ev.key in (pgl.K_UP, pgl.K_w):
  44                 if self.state.player.move(BITS.NORTH):
  45                     InvalidateTheWorld.post()
  46                     return True
  47             if ev.key in (pgl.K_DOWN, pgl.K_s):
  48                 if self.state.player.move(BITS.SOUTH):
  49                     InvalidateTheWorld.post()
  50                     return True
  51             if ev.key in (pgl.K_LEFT, pgl.K_a):
  52                 if self.state.player.move(BITS.WEST):
  53                     InvalidateTheWorld.post()
  54                     return True
  55             if ev.key in (pgl.K_RIGHT, pgl.K_d):
  56                 if self.state.player.move(BITS.EAST):
  57                     InvalidateTheWorld.post()
  58                     return True
  59         super(RobotWidget, self).handle_event(ev)