koperkapel/roaches.py

   1 """ Tools for creating roach actors. """
   2
   3 import random
   4 from pgzero.clock import each_tick
   5 from pgzero.loaders import images
   6 from pygame.constants import BLEND_RGBA_MULT
   7 from .actors.orientatedsurf import OrientatedSurfActor
   8 from .serums import roach_serum_color
   9
  10
  11 def roach_by_name(world, roach_name):
  12     roaches = [r for r in world.roaches if r.name == roach_name]
  13     if not roaches:
  14         return None
  15     return roaches[0]
  16
  17
  18 class RoachActor(OrientatedSurfActor):
  19     def __init__(self, frames):
  20         self._frames = frames
  21         self._frame = random.randint(0, len(frames) - 1)
  22         self._dt = 0
  23         self._cycle_dt = 0.2
  24         each_tick(self.update)
  25         super().__init__(surf=frames[self._frame], angle=0)
  26
  27     def update(self, dt):
  28         self._dt += dt
  29         while self._dt > self._cycle_dt:
  30             self._dt -= self._cycle_dt
  31             self._frame += 1
  32             self._frame %= len(self._frames)
  33         self.surf = self._frames[self._frame]
  34
  35
  36 class WorldRoach(object):
  37     """A roach proxy with no properties for display on the game level."""
  38
  39     def __init__(self):
  40         self.smart = False
  41         self.strong = False
  42         self.fast = False
  43
  44
  45 class RoachFactory:
  46
  47     def __init__(self, suffix, frames=4):
  48         self.suffix = suffix
  49         self.frames = 4
  50
  51     def assemble_frame(self, i, color, roach_data):
  52         roach = images.load("roach%s/roach_%d" % (self.suffix, i + 1))
  53         eyes = images.load("roach%s/eyes_%d" % (self.suffix, i + 1))
  54         frame = roach.copy()
  55         frame.fill(color, None, BLEND_RGBA_MULT)
  56         frame.blit(eyes, (0, 0))
  57         return frame
  58
  59     def assemble(self, roach_data):
  60         color = roach_serum_color(roach_data)
  61         frames = [
  62             self.assemble_frame(i, color, roach_data)
  63             for i in range(self.frames)]
  64         return RoachActor(frames)
  65
  66
  67 default_roaches = RoachFactory("")
  68 t32_roaches = RoachFactory("_32")
  69 t21_roaches = RoachFactory("_21")
  70 big_roaches = RoachFactory("_big")
  71 roaches_quartet = RoachFactory("_quartet")
  72 roaches_nonet = RoachFactory("_nonet")