def __init__(self, event_manager, entity_id):
SingleListener.__init__(self, event_manager)
self.entity_id = entity_id
self._area = None
self._age = 0
# This `exists` variable is funny. It comes in play because of how the
# physics engine is built. Imagine that for some reason (creature
# walks in lava, bonus gets picked up), an entity disappears from the
# world due to its physical interaction with the environment. The
# natural thing to do is to remove that entity from the world. However,
# that will break the physics engine since the dictionaries will change
# size during iterations. So instead, we mark the 'dead' entity by
# setting its `exists` variable to False. That saves the physics
# engine, but now we must take care that it ignores every entity that
# does not exist.
self.exists = True
# Physics.
self.body = physics.CircularBody(self.BODY_MASS, geometry.Vector(),
self.SOLID, materials.MATERIAL_FLESH,
self.BODY_RADIUS)
self._walk_force = physics.ConstantForce(geometry.Vector())
self.friction_force = physics.KineticFrictionForce(0)
self.body.forces.add(self._walk_force)
self.body.forces.add(self.friction_force)
self._walk_strentgh = self.WALK_STRENGTH
self.is_moving = False
# Final stuff.
self.post(events.EntityCreatedEvent(entity_id))
LOGGER.debug("Entity %i created.", entity_id)
def __init__(self, event_manager, entity_id):
SingleListener.__init__(self, event_manager)
self.entity_id = entity_id
self._area = None
self._age = 0
# This `exists` variable is funny. It comes in play because of how the
# physics engine is built. Imagine that for some reason (creature
# walks in lava, bonus gets picked up), an entity disappears from the
# world due to its physical interaction with the environment. The
# natural thing to do is to remove that entity from the world. However,
# that will break the physics engine since the dictionaries will change
# size during iterations. So instead, we mark the 'dead' entity by
# setting its `exists` variable to False. That saves the physics
# engine, but now we must take care that it ignores every entity that
# does not exist.
self.exists = True
# Physics.
self.body = physics.CircularBody(self.BODY_MASS,
geometry.Vector(),
self.SOLID,
materials.MATERIAL_FLESH,
self.BODY_RADIUS)
self._walk_force = physics.ConstantForce(geometry.Vector())
self.friction_force = physics.KineticFrictionForce(0)
self.body.forces.add(self._walk_force)
self.body.forces.add(self.friction_force)
self._walk_strentgh = self.WALK_STRENGTH
self.is_moving = False
# Final stuff.
self.post(events.EntityCreatedEvent(entity_id))
LOGGER.debug("Entity %i created.", entity_id)
def unregister(self):
"""Also unregisters its content."""
for area in self._areas.values():
area.unregister()
for entity in self.entities.values():
entity.unregister()
SingleListener.unregister(self)
def __init__(self, event_manager, world, area_id):
SingleListener.__init__(self, event_manager)
self.area_id = area_id
self.world = world
# Only keep weak references to the entities because they are owned by
# the World itself, not by the area. They can move between areas, or
# even be in no area at all.
self.entities = weakref.WeakValueDictionary()
# The tile map is a data structure that describes the fixed features of
# the landscape. By fix, I mean that these features cannot move.
# However, one can imagine that some of these features appear,
# disappear or change. For example, a door can open.
self.tile_map = tile.TileMap()
# The entity map is here ONLY for performance purposes. It allows a
# relatively quick access to the entities in a region. This helps us
# limiting the number of entities to look for during collisions, or
# when a creature is looking around for nearby victims.
self.entity_map = EntityMap()
# Useful for collision detection: entities are colliding if the
# distance between them is smaller than the sum of their radii. Keeping
# track of the biggest possible radius helps you delimiting the area
# containing the entities you may be colliding with. Nothing beyond
# your_radius + biggest_radius can touch you.
self._biggest_entity_radius = 0
LOGGER.debug("Area %i created.", area_id)
def __init__(self, event_manager, world, area_id):
SingleListener.__init__(self, event_manager)
self.area_id = area_id
self.world = world
# Only keep weak references to the entities because they are owned by
# the World itself, not by the area. They can move between areas, or
# even be in no area at all.
self.entities = weakref.WeakValueDictionary()
# The tile map is a data structure that describes the fixed features of
# the landscape. By fix, I mean that these features cannot move.
# However, one can imagine that some of these features appear,
# disappear or change. For example, a door can open.
self.tile_map = tile.TileMap()
# The entity map is here ONLY for performance purposes. It allows a
# relatively quick access to the entities in a region. This helps us
# limiting the number of entities to look for during collisions, or
# when a creature is looking around for nearby victims.
self.entity_map = EntityMap()
# Useful for collision detection: entities are colliding if the
# distance between them is smaller than the sum of their radii. Keeping
# track of the biggest possible radius helps you delimiting the area
# containing the entities you may be colliding with. Nothing beyond
# your_radius + biggest_radius can touch you.
self._biggest_entity_radius = 0
LOGGER.debug("Area %i created.", area_id)
def unregister(self):
"""Also unregisters its content."""
for area in self._areas.values():
area.unregister()
for entity in self.entities.values():
entity.unregister()
SingleListener.unregister(self)
def __init__(self, event_manager):
SingleListener.__init__(self, event_manager)
self.area = None
self.coords = None
self.factory = None
self.period = None
self._timer = 0
self._active = True
def __init__(self, event_manager):
SingleListener.__init__(self, event_manager)
self.area = None
self.coords = None
self.factory = None
self.period = None
self._timer = 0
self._active = True
def __init__(self, event_manager):
SingleListener.__init__(self, event_manager)
self.key_up_events = {}
self.key_down_events = {}
self.setup()
def __init__(self, event_manager):
SingleListener.__init__(self, event_manager)
self._entity_id_max = -1
self.entities = {}
self._area_id_max = -1
self._areas = {}
def __init__(self, event_manager):
SingleListener.__init__(self, event_manager)
self._entity_id_max = -1
self.entities = {}
self._area_id_max = -1
self._areas = {}
