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.surf import SurfActor
   8
   9 ROACH_COLORS = {
  10     "blue": (0, 0, 255, 255),
  11     "green": (0, 255, 0, 255),
  12     "purple": (255, 0, 255, 255),
  13 }
  14
  15
  16 class RoachActor(SurfActor):
  17     def __init__(self, frames):
  18         self._frames = frames
  19         self._frame = random.randint(0, len(frames) - 1)
  20         self._dt = 0
  21         self._cycle_dt = 0.2
  22         each_tick(self.update)
  23         super().__init__(surf=frames[self._frame])
  24
  25     def update(self, dt):
  26         self._dt += dt
  27         while self._dt > self._cycle_dt:
  28             self._dt -= self._cycle_dt
  29             self._frame += 1
  30             self._frame %= len(self._frames)
  31         self.surf = self._frames[self._frame]
  32
  33
  34 class RoachFactory:
  35
  36     def __init__(self, suffix, frames=4):
  37         self.suffix = suffix
  38         self.frames = 4
  39
  40     def roach_color(self, roach_data):
  41         return random.choice(list(ROACH_COLORS.values()))
  42
  43     def assemble_frame(self, i, color, roach_data):
  44         roach = images.load("roach%s/roach_%d" % (self.suffix, i + 1))
  45         eyes = images.load("roach%s/eyes_%d" % (self.suffix, i + 1))
  46         roach = roach.copy()
  47         roach.fill(color, None, BLEND_RGBA_MULT)
  48         roach.blit(eyes, (0, 0))
  49         return roach
  50
  51     def assemble(self, roach_data):
  52         color = self.roach_color(roach_data)
  53         frames = [
  54             self.assemble_frame(i, color, roach_data)
  55             for i in range(self.frames)]
  56         return RoachActor(frames)
  57
  58
  59 default_roaches = RoachFactory("")
  60 t32_roaches = RoachFactory("_32")
  61 t21_roaches = RoachFactory("_21")
  62 big_roaches = RoachFactory("_big")