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annotate gamelib/sprite_cursor.py @ 232:0bd214cf9018

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Overlay cost on building sprite cursors.
author Simon Cross <hodgestar@gmail.com>
date Fri, 04 Sep 2009 23:59:52 +0000
parents f06010d34cd3
children 9cc7bc5cd10c
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1 """In-game sprite cursors for the gameboard.
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3 Currently mostly used when placing buildings.
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4 """
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6 import pygame
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7 import pygame.font
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8 from pygame.locals import SRCALPHA
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10 import imagecache
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11 import constants
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12 from pgu.vid import Sprite
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14 # ignore os.popen3 warning generated by pygame.font.SysFont
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15 import warnings
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16 warnings.filterwarnings("ignore", "os.popen3 is deprecated.")
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18 class SpriteCursor(Sprite):
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19 """A Sprite used as an on-board cursor."""
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21 def __init__(self, image_name, tv, cost=None):
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22 self._font = pygame.font.SysFont('Vera', 20, bold=True)
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23 image = imagecache.load_image(image_name, ["sprite_cursor"])
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24
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25 if cost is not None:
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26 image = image.copy()
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27 text = self._font.render(str(cost), True, constants.FG_COLOR)
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28 w, h = image.get_size()
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29 x, y = text.get_size()
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30 image.blit(text, (w - x, h - y))
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32 # Create the sprite somewhere far off screen
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33 Sprite.__init__(self, image, (-1000, -1000))
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34 self._tv = tv
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36 def set_pos(self, tile_pos):
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37 """Set the cursor position on the gameboard."""
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38 self.rect.x, self.rect.y = self._tv.tile_to_view(tile_pos)