Mercurial > rinkhals
annotate gamelib/animations.py @ 237:4a87bfa5cc63
Twiddle animation cycle
| author | Neil Muller <drnlmuller@gmail.com> |
|---|---|
| date | Sat, 05 Sep 2009 09:48:48 +0000 |
| parents | d0760fccce14 |
| children | 1a7000c8211c |
| rev | line source |
|---|---|
| 202 | 1 """Animation Loops""" |
| 2 | |
| 3 from pgu.vid import Sprite | |
| 4 | |
| 5 import imagecache | |
| 6 from misc import Position | |
| 7 | |
| 8 class Animation(Sprite): | |
| 9 """Animation loop. | |
| 10 | |
| 11 These are derived from sprites, since they behave similiary in most | |
| 12 respects, but, to ensure draw ordering, we don't add them to | |
| 13 the sprites list. | |
| 14 | |
| 15 Ideally, animations should be quite short.""" | |
| 237 | 16 # In the current implementation, sequences longer than 4 frames |
|
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d3d5352f5853
Twek speed loop. Document animation assumptions
Neil Muller <drnlmuller@gmail.com>
parents:
202
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17 # will cause issues as this will overrun the next move loop. |
| 237 | 18 # (assuming all animations are triggered by the move loop, of course) |
| 202 | 19 |
| 20 def __init__(self, sequence, tile_pos): | |
| 21 # Create the first frame | |
| 22 self.iter = iter(sequence) | |
| 23 Sprite.__init__(self, self.iter.next(), (-1000, -1000)) | |
| 24 if hasattr(tile_pos, 'to_tuple'): | |
| 25 self.pos = tile_pos | |
| 26 else: | |
| 27 self.pos = Position(tile_pos[0], tile_pos[1]) | |
| 28 self.removed = False | |
| 29 | |
| 30 def fix_pos(self, tv): | |
| 31 ppos = tv.tile_to_view(self.pos.to_tuple()) | |
| 32 self.rect.x = ppos[0] | |
| 33 self.rect.y = ppos[1] | |
| 34 | |
| 35 def animate(self): | |
| 36 """Step to the next frame. | |
| 37 | |
| 38 Set removed flag when we hit the end of the sequence""" | |
| 39 try: | |
| 40 self.setimage(self.iter.next()) | |
| 41 except StopIteration: | |
| 42 self.removed = True | |
| 43 | |
| 44 class MuzzleFlash(Animation): | |
| 45 | |
|
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d0760fccce14
Hold flash for a bit longer
Neil Muller <drnlmuller@gmail.com>
parents:
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46 FLASH_LEFT = imagecache.load_image('sprites/muzzle_flash.png') |
|
d0760fccce14
Hold flash for a bit longer
Neil Muller <drnlmuller@gmail.com>
parents:
233
diff
changeset
|
47 FLASH_RIGHT = imagecache.load_image('sprites/muzzle_flash.png', |
|
d0760fccce14
Hold flash for a bit longer
Neil Muller <drnlmuller@gmail.com>
parents:
233
diff
changeset
|
48 ("right_facing",)) |
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d0760fccce14
Hold flash for a bit longer
Neil Muller <drnlmuller@gmail.com>
parents:
233
diff
changeset
|
49 |
|
d0760fccce14
Hold flash for a bit longer
Neil Muller <drnlmuller@gmail.com>
parents:
233
diff
changeset
|
50 SEQUENCE_LEFT = [FLASH_LEFT, FLASH_LEFT] |
|
d0760fccce14
Hold flash for a bit longer
Neil Muller <drnlmuller@gmail.com>
parents:
233
diff
changeset
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51 SEQUENCE_RIGHT = [FLASH_RIGHT, FLASH_RIGHT] |
| 202 | 52 |
| 53 def __init__(self, chicken): | |
| 54 if chicken.facing == 'right': | |
| 55 Animation.__init__(self, self.SEQUENCE_RIGHT, chicken.pos) | |
| 56 else: | |
| 57 Animation.__init__(self, self.SEQUENCE_LEFT, chicken.pos) | |
| 58 |