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annotate nagslang/screens/area.py @ 27:3e4d8091268c

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A werewolf always knows where she's going.
author Simon Cross <hodgestar@gmail.com>
date Sun, 01 Sep 2013 16:03:04 +0200
parents e93eac7cf8c2
children 2995723e8ccf
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1 """Display a game area."""
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3 import math
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4
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5 import pygame
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6 import pymunk
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7 import pymunk.pygame_util
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9 from nagslang.screens.base import Screen
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10 from nagslang.events import ScreenChange
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13 class AreaScreen(Screen):
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15 def setup(self, world):
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16 self.add_walls(world)
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17 self.add_protagonist(world)
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19 def add_walls(self, world):
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20 self.walls = []
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21 body = pymunk.Body()
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22 body.position = (400, 300)
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23 corners = [(-200, -150), (-200, 150), (200, 150), (200, -150)]
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24 corner = corners[-1]
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25 for next_corner in corners:
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26 self.walls.append(pymunk.Segment(body, corner, next_corner, 5))
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27 corner = next_corner
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28 self.space.add(*self.walls)
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30 def add_protagonist(self, world):
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31 self.protagonist_body = pymunk.Body(100, 1000)
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32 self.protagonist_body.position = (400, 300)
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33 self.protagonist = pymunk.Circle(self.protagonist_body, 30)
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34 self.space.add(self.protagonist_body, self.protagonist)
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36 def protagonist_move(self, dx, dy, angle):
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37 self.protagonist_body.angle = angle
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38 self.protagonist_body.apply_impulse((dx * 2000, dy * 2000))
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40 def handle_event(self, ev):
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41 if ev.type == pygame.locals.KEYDOWN:
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42 if ev.key == pygame.locals.K_ESCAPE:
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43 ScreenChange.post('menu')
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44 elif ev.key == pygame.locals.K_UP:
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45 self.protagonist_move(0, 1, math.pi / 2)
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46 elif ev.key == pygame.locals.K_DOWN:
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47 self.protagonist_move(0, -1, -math.pi / 2)
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48 elif ev.key == pygame.locals.K_LEFT:
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49 self.protagonist_move(-1, 0, math.pi)
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50 elif ev.key == pygame.locals.K_RIGHT:
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51 self.protagonist_move(1, 0, 0)
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53 def render(self, surface):
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54 surface.fill(pygame.color.Color(0, 0, 0))
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55 pymunk.pygame_util.draw(surface, *self.walls)
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56 pymunk.pygame_util.draw(surface, self.protagonist)