1 """ Base class for vehicles. """
3 from itertools import chain, islice, repeat
4 from pygame.constants import BLEND_RGBA_MULT
5 from pgzero.actor import Actor
6 from pgzero.loaders import images
7 from ..actors.orientatedsurf import OrientatedSurfActor
11 """ Vehicle base class. """
14 approximate_radius = 200
15 selected_seat_overlay_color = (255, 0, 0, 255)
18 self.seats = self.init_seats()
19 self.game_pos = (0, 0)
21 def roach_management_overlay(self):
22 return Actor("vehicles/%s/background" % (self.vehicle_type,))
25 raise NotImplementedError("Vehicles should specify a list of seats")
27 def seating(self, world):
28 roach_seating = world.vehicles[self.vehicle_type].seating
29 roach_seating_numbers = enumerate(zip(roach_seating, self.seats))
32 for seat_pos, (roach, _) in roach_seating_numbers if roach
35 def seat_roach(self, world, roach, seat_pos):
36 vehicle = world.vehicles[self.vehicle_type]
37 seats = len(self.seats)
38 seating = list(vehicle.seating)
39 seating = list(islice(
40 chain(seating, repeat(None, seats)), 0, seats))
41 seating[seat_pos] = roach
42 # line below records new seating on the world proxy
43 vehicle.seating = seating
45 def roach_at(self, world, seat_pos):
46 roach_seating = world.vehicles[self.vehicle_type].seating
47 if seat_pos >= len(roach_seating):
49 return roach_seating[seat_pos]
54 def current(cls, world):
55 return cls.by_type(world.vehicles.current)
58 def by_type(cls, vehicle_type):
59 return cls._vehicle_types.get(vehicle_type)()
62 def register(cls, vehicle_cls):
63 cls._vehicle_types[vehicle_cls.__name__.lower()] = vehicle_cls
66 def register_all(cls):
67 from .walking import Walking
70 def get_avatar(self, world):
71 raise NotImplementedError("Vehicles should know how to create their own avatars.")
75 """ A space in a vehicle for a roach.
77 * pos -- (x, y) position of the seat relative to the centre of the vehicle.
78 x and y may be numbers from approximately -1.0 to 1.0. They will be
79 multiplied by the approximate_radius of the vehicle.
80 * roach -- name of the roach occupying the seat, if any.
81 * allowed -- f(roach) for checking whether a roach may occupy the
85 def __init__(self, vehicle, pos, roach=None, allowed=None):
86 self.vehicle = vehicle
89 self.allowed = allowed or (lambda roach: True)
90 vrad = vehicle.approximate_radius
91 self.vehicle_pos = (pos[0] * vrad, pos[1] * vrad)
95 "vehicles/%s/seat" % (self.vehicle.vehicle_type,))
96 selected_seat = seat.copy()
98 self.vehicle.selected_seat_overlay_color, None, BLEND_RGBA_MULT)
99 return SeatActor(seat, selected_seat)
102 class SeatActor(OrientatedSurfActor):
103 def __init__(self, seat, selected_seat):
104 self._selected = False
106 self._selected_seat = selected_seat
107 super().__init__(surf=self._seat, angle=0)
111 return self._selected
114 def selected(self, value):
115 self._selected = value
116 self.surf = self._selected_seat if value else self._seat
119 Vehicle.register_all()