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 .actors.surf import SurfActor
   7
   8
   9 class RoachActor(SurfActor):
  10     def __init__(self, frames):
  11         self._frames = frames
  12         self._frame = random.randint(0, len(frames) - 1)
  13         self._dt = 0
  14         self._cycle_dt = 0.2
  15         each_tick(self.update)
  16         super().__init__(surf=frames[self._frame])
  17
  18     def update(self, dt):
  19         self._dt += dt
  20         while self._dt > self._cycle_dt:
  21             self._dt -= self._cycle_dt
  22             self._frame += 1
  23             self._frame %= len(self._frames)
  24         self.surf = self._frames[self._frame]
  25
  26
  27 class RoachFactory:
  28
  29     def __init__(self, suffix, frames=4):
  30         self.suffix = suffix
  31         self.frames = 4
  32
  33     def assemble_frame(self, i, roach_data):
  34         base = images.load("roach%s/roach_%d" % (self.suffix, i + 1))
  35         return base
  36
  37     def assemble(self, roach_data):
  38         frames = [
  39             self.assemble_frame(i, roach_data) for i in range(self.frames)]
  40         return RoachActor(frames)
  41
  42
  43 default_roaches = RoachFactory("")
  44 t32_roaches = RoachFactory("_32")
  45 t21_roaches = RoachFactory("_21")
  46 big_roaches = RoachFactory("_big")