def __init__(self, params=None):
pygame.init()
if params is not None:
self.SCREEN_HEIGHT, self.SCREEN_WIDTH = int(float(params['display']['height']) * SCALE), \
int(float(params['display']['width']) * SCALE)
self.FIELD_LIMITS = int(float(params['field_top_left_x']) * SCALE), \
int(float(params['field_top_left_y']) * SCALE), \
int(float(params['field_bottom_right_x']) * SCALE), \
int(float(params['field_bottom_right_y']) * SCALE)
self.FIELD_SIZE = self.FIELD_LIMITS[2] - self.FIELD_LIMITS[
0], self.FIELD_LIMITS[3] - self.FIELD_LIMITS[1]
self.GRID_SIZE = int(float(params['cell']['width']) * SCALE), int(
float(params['cell']['height']) * SCALE)
# zoom and centering
self.offset = 0, 0
self.zoom_factor = 1.0
self._old_screen = self.SCREEN_WIDTH, self.SCREEN_HEIGHT
# setup the screen and the box field of play
self.initialize_screen()
# agents
self.agents = pygame.sprite.Group()
self.agent_image = pygame.image.load(
'assets/blueagent.bmp').convert_alpha()
self.controller = SocialForceController(self)
# self.controller = RandomController(self)
# time related items
self.clock = pygame.time.Clock()
self.paused = False
self.simulation_timer = Timer(10, self.simulation_update)
# create the grid
self.setup_grid()
# additional options (remove this)
self.options = dict(draw_grid=True)
# setup objects (waypoints, obstacles)
self.waypoints = dict()
self.obstacles = []
self._agent_count = 0
# initialize the time
self.time_passed = 0
