tabakrolletjie/scenes/night.py

   1 """ In the night, the mould attacks. """
   2
   3 import pygame.surface
   4 import pygame.locals as pgl
   5
   6 import pymunk
   7
   8 from .base import BaseScene
   9 from ..lights import LightManager
  10 from ..obstacles import ObstacleManager
  11 from ..enemies import Boyd
  12 from ..events import SceneChangeEvent
  13 from ..utils import debug_timer, shadowed_text
  14 from ..loader import loader
  15 from ..transforms import Overlay
  16 from ..turnip import Turnip
  17 from ..widgets import ImageButton
  18 from ..constants import NIGHT_LENGTH, DEBUG, FONTS, SCREEN_SIZE
  19
  20
  21 class NightScene(BaseScene):
  22
  23     DARKNESS = Overlay(colour=(0, 0, 0, 150))
  24
  25     def enter(self, gamestate):
  26         self._space = pymunk.Space()
  27         self._obstacles = ObstacleManager(self._space, gamestate)
  28         self._lights = LightManager(self._space, gamestate)
  29         self._mould = Boyd(gamestate, self._space)
  30         self._turnips = []
  31         for turnip_data in gamestate.turnips:
  32             turnip = Turnip(space=self._space, **turnip_data)
  33             self._turnips.append(turnip)
  34         self._soil = loader.load_image(
  35             "textures", "soil.png", transform=self.DARKNESS)
  36         self._tools = self.create_tools(gamestate)
  37         self._total_ticks = 0
  38         self._do_ticks = True
  39         self._paused = False
  40         self._eaten_tonight = 0
  41         self._night_over_text = []
  42
  43     def create_tools(self, gamestate):
  44         tools = []
  45         y = SCREEN_SIZE[1] - 40
  46         tools.append(ImageButton(
  47             '32', 'pause.png', name='pause play', pos=(SCREEN_SIZE[0] - 150, y)))
  48         tools.append(ImageButton(
  49             '32', 'exit.png', name='exit', pos=(SCREEN_SIZE[0] - 50, y)))
  50         return tools
  51
  52     @debug_timer("night.render")
  53     def render(self, surface, gamestate):
  54         surface.blit(self._soil, (0, 0))
  55
  56         self._mould.render(surface)
  57
  58         for turnip in self._turnips[:]:
  59             if turnip.eaten:
  60                 self._turnips.remove(turnip)
  61                 turnip.remove()
  62                 gamestate.eaten += 1
  63                 self._eaten_tonight += 1
  64             else:
  65                 turnip.render(surface)
  66
  67         self._lights.render_light(surface)
  68         self._obstacles.render(surface)
  69         self._lights.render_fittings(surface)
  70
  71         for tool in self._tools:
  72             tool.render(surface)
  73
  74         for text, text_pos in self._night_over_text:
  75             surface.blit(text, text_pos, None)
  76
  77     def event(self, ev, gamestate):
  78         if ev.type == pgl.KEYDOWN:
  79             if not self._do_ticks:
  80                 # Any keypress exits
  81                 self._to_day()
  82             if ev.key in (pgl.K_q, pgl.K_ESCAPE):
  83                 from .menu import MenuScene
  84                 SceneChangeEvent.post(scene=MenuScene())
  85             elif ev.key == pgl.K_e and DEBUG:
  86                 self._end_night()
  87             elif ev.key == pgl.K_SPACE:
  88                 self.toggle_pause()
  89         elif ev.type == pgl.MOUSEBUTTONDOWN:
  90             if not self._do_ticks:
  91                 # Any mouse press exits
  92                 self._to_day()
  93             if ev.button == 1:
  94                 self._lights.toggle_nearest(ev.pos, surfpos=True)
  95                 print self._lights.lit_by(ev.pos, surfpos=True)
  96
  97                 # Check tools
  98                 for tool in self._tools:
  99                     if tool.pressed(ev):
 100                         if tool.name == 'pause play':
 101                             self.toggle_pause()
 102                         elif tool.name == 'exit':
 103                             from .menu import MenuScene
 104                             SceneChangeEvent.post(scene=MenuScene())
 105
 106     def toggle_pause(self):
 107         self._paused = not self._paused
 108         pause_img = "play.png" if self._paused else "pause.png"
 109         for tool in self._tools:
 110             if tool.name == 'pause play':
 111                 tool.update_image("32", pause_img)
 112
 113     def _to_day(self):
 114         # End the night
 115         from .day import DayScene
 116         SceneChangeEvent.post(scene=DayScene())
 117
 118     def _end_night(self):
 119         self._do_ticks = False
 120         self._night_over_text = []
 121         overlay = pygame.surface.Surface(
 122             (SCREEN_SIZE[0], 240), pgl.SWSURFACE).convert_alpha()
 123         overlay.fill((0, 0, 0, 172))
 124         self._night_over_text.append((overlay, (0, 40)))
 125         self._night_over_text.append(
 126             (shadowed_text("The Night is Over", FONTS["bold"], 48), (300, 50)))
 127         self._night_over_text.append(
 128             (shadowed_text("Turnips eaten tonight: %d" % self._eaten_tonight,
 129                            FONTS["sans"], 32), (300, 130)))
 130         self._night_over_text.append(
 131             (shadowed_text("Surviving turnips: %d" % len(self._turnips),
 132                            FONTS["sans"], 32), (300, 170)))
 133         self._night_over_text.append(
 134             (shadowed_text("Press any key to continue", FONTS["sans"], 24),
 135              (350, 240)))
 136
 137     @debug_timer("night.tick")
 138     def tick(self, gamestate):
 139         if self._do_ticks and not self._paused:
 140             if self._total_ticks < NIGHT_LENGTH:
 141                 self._mould.tick(gamestate, self._space, self._lights)
 142                 self._lights.tick()
 143                 print "Power usage: ", self._lights.total_power_usage()
 144                 self._total_ticks += 1
 145             else:
 146                 self._end_night()
 147             if not self._mould.alive():
 148                 self._end_night()
 149
 150     def exit(self, gamestate):
 151         turnip_data = [turnip.serialize() for turnip in self._turnips]
 152         gamestate.turnips = turnip_data
 153         # TODO: Move this into the end_night function
 154         gamestate.days += 1
 155         self._mould.update_resistances(gamestate)