Beispiel #1
0
    def start(self):
        self.story = Story('first')
        self.world_state = WorldState(self)

        self.area_state = AreaState(self)
        self.area_state.set_area(self.story.world.get_start_area())

        self.push_state(self.world_state)
        self.push_state(self.area_state)
        self.loop()
Beispiel #2
0
class Game:
    def __init__(self):
        pygame.init()
        pygame.mouse.set_visible(False)
        self.size = width, height = screen_width, screen_height
        self.screen = pygame.display.set_mode(self.size)
        self.states = []
        self.exit = False

    def push_state(self, state):
        if len(self.states):
            self.states[-1].pause()
        self.states.append(state)
        state.enter()

    def top_state(self):
        return self.states[-1]

    def pop_state(self):
        if len(self.states):
            self.states[-1].exit()
            self.states.pop()
        if len(self.states):
            self.states[-1].resume()
        else:
            self.exit = True

    def start(self):
        self.story = Story('first')
        self.world_state = WorldState(self)

        self.area_state = AreaState(self)
        self.area_state.set_area(self.story.world.get_start_area())

        self.push_state(self.world_state)
        self.push_state(self.area_state)
        self.loop()

    def loop(self):
        #time is specified in milliseconds
        #fixed simulation step duration
        step_size = 10
        #max duration to render a frame
        max_frame_time = 100

        time_last_frame = pygame.time.get_ticks()
        frames = 0
        time = 0

        ms_per_frame = 1000/frames_per_second

        while not self.exit:
            #handle events
            for e in pygame.event.get():
                #print str(e)
                if e.type == pygame.QUIT:
                    self.exit = True
                elif e.type == pygame.KEYUP:
                    if e.key == pygame.K_ESCAPE:
                        self.pop_state()
                    if self.exit:
                        break
                    self.top_state().process_event(e)
                elif e.type == pygame.MOUSEBUTTONDOWN:
                    self.top_state().process_event(e)

            if self.exit:
                break

            now = pygame.time.get_ticks()
            time_since_last_frame = now - time_last_frame

            if time_since_last_frame < ms_per_frame:
                pygame.time.wait(ms_per_frame - time_since_last_frame)
                now = pygame.time.get_ticks()

            time_since_last_frame = now - time_last_frame
            time_last_frame = now
            proportion = float(time_since_last_frame) / ms_per_frame

            self.top_state().update(proportion)
            if frametime_enabled:
                before = pygame.time.get_ticks()
            self.top_state().draw(self.screen)
            if frametime_enabled:
                after = pygame.time.get_ticks()
                frames = frames + 1
                time = time + (after-before)
            pygame.display.flip()

        if frametime_enabled:
            print 'average render time: %f' % (float(time)/frames)