def load_entities(charnames):
wds = list()
skins = list()
for charname in charnames:
path = os.path.join(usf_root, 'data', 'characters', charname)
path2 = os.path.join(usf_root, 'data', 'characters_unfinished', charname)
if os.path.exists(path):
if not os.path.exists(
os.path.join(path,path.split(os.path.sep)[-1])+".xml"
):
create_character_xml(path)
skins.append(EntitySkin(path))
if inotifyx:
wds.append(inotifyx.add_watch(fd, path, inotifyx.IN_MODIFY))
elif os.path.exists(path2):
if not os.path.exists(
os.path.join(path2,path2.split(os.path.sep)[-1])+".xml"
):
create_character_xml(path2)
skins.append(EntitySkin(path2))
if inotifyx:
wds.append(inotifyx.add_watch(fd, path2, inotifyx.IN_MODIFY))
else:
logging.error("no directory of this name in characters.")
return skins, wds
def __init__(self, **kwargs):
super(Entity, self).__init__(**kwargs)
number = kwargs.get('num')
if number:
self._num = number
else:
self._num = Entity.counter
Entity.counter += 1
self._game = kwargs.get('game')
self._upgraded = kwargs.get('upgraded', False)
self._lighten = False
self._shield = {'on': False, 'power': 1.0, 'date': 0}
self._carried_by = kwargs.get('carried_by', None)
# the entity is reversed when looking left.
self._percents = 0
self._lives = kwargs.get('lives', 3)
self._invincible = False
self._visible = kwargs.get('visible', False)
entity_skinname = kwargs.get(
'entity_skinname',
'characters' + os.sep + 'stick')
if entity_skinname is not None:
animation = kwargs.get('animation', 'static')
self._name = entity_skinname.split(os.sep)[-1]
self.entity_skin = EntitySkin(
entity_skinname,
not self._game or not self._game.screen,
animation=animation)
self._armor = self.entity_skin.armor
self._rect = pygame.Rect(0, 0, 0, 0)
self._rect[:2] = (
self._place[0] - self._rect[2] / 2,
self._place[1] - self._rect[3])
self._rect[2:] = self.entity_skin.animation.rect[2:]
self.entity_skin.update(0,
server=(self._game is None or self._game.screen is None))
self._game.events.add_event(
'ShieldUpdateEvent',
(None, None),
{'world': self._game, 'player': self})
class Entity(Actor):
"""
Provide an entity object, which will take care of lives, movements,
collisions of an Entity. Players and Items are Entities.
This is a big class, and it uses a few counterintuitive concepts. First,
its vectors are defined relatively, that means moving "forward/backward"
instead of moving "left/right." Also, the vector representing the walking
movement of the entity is seperated from the main vector.
"""
# Precalculation of some sin-cos list to speed up collision detection.
# number of points cannot be changed currently due to not adaptative
# collision method.
nb_points = 8
ai = False
ai_ = None
list_sin_cos = [[
math.sin(i * math.pi / (nb_points / 2) + math.pi / nb_points),
math.cos(i * math.pi / (nb_points / 2) + math.pi / nb_points)]
for i in range(nb_points)]
list_sin_cos_1 = map(lambda (x, y): (x + 1, y + 1), list_sin_cos)
# this counter will allow us to correctly update entities.
counter = 0
def __init__(self, **kwargs):
super(Entity, self).__init__(**kwargs)
number = kwargs.get('num')
if number:
self._num = number
else:
self._num = Entity.counter
Entity.counter += 1
self._game = kwargs.get('game')
self._upgraded = kwargs.get('upgraded', False)
self._lighten = False
self._shield = {'on': False, 'power': 1.0, 'date': 0}
self._carried_by = kwargs.get('carried_by', None)
# the entity is reversed when looking left.
self._percents = 0
self._lives = kwargs.get('lives', 3)
self._invincible = False
self._visible = kwargs.get('visible', False)
entity_skinname = kwargs.get(
'entity_skinname',
'characters' + os.sep + 'stick')
if entity_skinname is not None:
animation = kwargs.get('animation', 'static')
self._name = entity_skinname.split(os.sep)[-1]
self.entity_skin = EntitySkin(
entity_skinname,
not self._game or not self._game.screen,
animation=animation)
self._armor = self.entity_skin.armor
self._rect = pygame.Rect(0, 0, 0, 0)
self._rect[:2] = (
self._place[0] - self._rect[2] / 2,
self._place[1] - self._rect[3])
self._rect[2:] = self.entity_skin.animation.rect[2:]
self.entity_skin.update(0,
server=(self._game is None or self._game.screen is None))
self._game.events.add_event(
'ShieldUpdateEvent',
(None, None),
{'world': self._game, 'player': self})
@property
def num(self):
"""
return entity number
"""
return self._num
@property
def hardshape(self):
"""
return current hardshape from entity_skin
"""
return self.entity_skin.hardshape
@property
def name(self):
"""
name of the entity
"""
return self._name
@property
def lives(self):
"""
return current number of lives of the entity
"""
return self._lives
def set_lives(self, value):
"""
change current number of lives of the entity
"""
assert isinstance(value, int)
self._lives = value
@property
def armor(self):
""" return current armor state
"""
return self._armor
@property
def percents(self):
"""
return current percents
"""
return self._percents
def set_percents(self, value):
"""
change percents value
"""
self._percents = value
def add_percents(self, value):
"""
increment the current player percents
"""
self._percents += value
self._percents = max(self.percents, 0)
@property
def shield(self):
"""
return current state of the shield
"""
return self._shield
@property
def upgraded(self):
"""
return True if the player is currently upgraded
"""
return self._upgraded
def set_upgraded(self, value):
"""
Set the upgraded state of the player, True or False
"""
assert value in (True, False)
self._upgraded = value
@property
def visible(self):
"""
set if the entity is currently visible on screen
"""
return self._visible
def set_visible(self, value):
"""
Set the visibility statue of the entity
"""
self._visible = value
@property
def invincible(self):
"""
status of the entity vulnerability to hits
"""
return self._invincible
def set_invincible(self, value):
"""
set the entity invulnerability status
"""
assert value in (True, False)
self._invincible = value
@property
def lighten(self):
"""
True if the entity should be currently displayed lightened
"""
return self._lighten
def set_lighten(self, value):
"""
Set lighten attribute of entity to value
"""
assert value in (True, False)
self._lighten = value
def backup(self):
"""
save important attributes of the state of the player, to a dict
"""
assert isinstance(self._vector, list)
d = {
'_lives': self.lives,
'_place': self.place[:],
'_rect': pygame.Rect(self.rect[:]),
'_vector': self._vector[:],
'_walking_vector': self.walking_vector[:]}
# would be easier with a dict comprehension, but not yet in 2.6
for k in ('_reversed', '_percents', '_upgraded', '_present',
'_visible'):
d[k] = self.__dict__[k]
return d
def restore(self, backup):
"""
restore the game to the state described in backup
"""
self.__dict__.update(backup)
assert isinstance(self._vector, list)
@property
def agressiv_points(self):
"""
return agressive points of the current frame
"""
return self.entity_skin.animation.agressivpoints
def test_hit(self, entity):
"""
test entity aggressive points collisions with other entity
"""
for point in self.agressiv_points:
if entity.rect.colliderect(
self.rect[0] + point[0][0] - 3,
self.rect[1] + point[0][1] - 3,
6,
6):
entity.hit(point, self.reversed)
def hit(self, point, reverse):
"""
enforce the effect of a collision with an aggressive point. the
point is a list of x, y,dx, dy coords, and reverse is a flag indicating
if the attacking entity is reversed (to apply projection vectors)
"""
if self.shield['on']:
self.shield['power'] -= (math.sqrt(
point[1][0] ** 2 + point[1][1] ** 2)
/ CONFIG.general.SHIELD_SOLIDITY)
self.shield['power'] = max(0, self.shield['power'])
self._percents += (math.sqrt(point[1][0] ** 2 + point[1][1] ** 2)
/ (30 * (100 - self.armor)) / 2)
else:
direction = reverse != self.reversed and -1 or 1
self.set_vector([direction * point[1][0] * (1 + self._percents),
point[1][1] * (1 + self._percents)])
self._percents += math.sqrt((
point[1][0] ** 2 + point[1][1] ** 2) / (30 * (100 - self.armor)))
self.entity_skin.change_animation(
'take',
self._game,
params={'entity': self})
def alive(self):
"""
True if the player still has lives left
"""
return self.lives > 0
def _draw_debug(self, coords, zoom, surface, debug_params):
"""
This method just calls all specific debug draw methods
"""
self._draw_debug_levelmap(surface, debug_params)
self._draw_debug_hardshape(coords, zoom, surface, debug_params)
self._draw_debug_footrect(coords, zoom, surface, debug_params)
self._draw_debug_current_animation(coords, surface, debug_params)
def _draw_debug_levelmap(self, surface, debug_params):
"""
show the level map directly, useful to debugging
"""
if debug_params["levelmap"]:
draw_rect(
surface,
pygame.Rect(self.place[0] / 8, self.place[1] / 8, 2, 2),
pygame.Color('red'))
def _draw_debug_hardshape(self, coords, zoom, surface, debug_params):
"""
if hardshape debug is set, draw the hardshape of the player on the screen
"""
if self.visible:
if debug_params.get('hardshape', False):
draw_rect(
surface,
pygame.Rect(
coords[0] + self.hardshape[0] * zoom,
coords[1] + self.hardshape[1] * zoom,
self.hardshape[2] * zoom,
self.hardshape[3] * zoom),
pygame.Color(255, 0, 0, 127))
for n, i in enumerate(self.update_points()):
draw_rect(
surface,
pygame.Rect((
coords[0] + (i[0] - self.rect[0]) * zoom,
coords[1] + (i[1] - self.rect[1]) * zoom,
2, 2)),
n > 3 and pygame.Color('green') or
pygame.Color('blue'))
def _draw_debug_footrect(self, coords, zoom, surface, debug_params):
"""
if footrect debug is set, draw the footrect collision rect to the screen
"""
if self.visible:
if debug_params.get('footrect', False):
r = self.foot_rect
draw_rect(
surface,
pygame.Rect(
coords[0] + (r[0] - self.rect[0]) * zoom,
coords[1] + (r[1] - self.rect[1]) * zoom,
r[2] * zoom,
r[3] * zoom),
pygame.Color(255, 255, 0, 127))
def _draw_debug_current_animation(self, coords, surface, debug_params):
"""
if the current_animation debug is set, write the name of the current
animation near of the character
"""
if self.visible:
if debug_params.get('current_animation', False):
surface.blit(
loaders.text(self.entity_skin.current_animation,
fonts['mono']['25']),
(coords[0], coords[1] - self.entity_skin.animation.rect[3]))
def draw(self, coords, zoom, surface, debug_params=dict()):
"""
Draw the entity on the surface(i.e: the screen), applying coordinates
offsets and zoom scaling as necessary, implementation depends on the
definition of the global "SIZE", as a 2 elements list of in integers,
containing respective height and width of the screen.
coords is a tuple containing the current position of the camera, zoom is
the current zoom of the camera.
"""
# Draw a point on the map at the entity position.
if not self.present:
return
if self.visible:
if not self.reversed:
place = (
self.rect[0] - self.hardshape[0],
self.rect[1] - self.hardshape[1])
else:
place = (
self.rect[0],
self.rect[1] - self.hardshape[1])
real_coords = (
int(place[0] * zoom) + coords[0],
int(place[1] * zoom) + coords[1])
self._draw_debug(real_coords, zoom, surface, debug_params)
if self.entity_skin.animation.trails and self.old_pos:
for i, (x, y) in enumerate(reversed(self.old_pos)):
img = self.entity_skin.animation.trails[
len(self.old_pos) - (i + 1)]
surface.blit(
loaders.image(
img,
reversed=self.reversed,
zoom=zoom)[0],
(
int(x * zoom) + coords[0] - (
not self.reversed and self.hardshape[0] or 0),
int(y * zoom) + coords[1] - self.hardshape[1]))
skin_image = loaders.image(
self.entity_skin.animation.image,
reversed=self.reversed,
lighten=self.lighten,
zoom=zoom)
surface.blit(
skin_image[0],
real_coords)
if self.shield['on']:
image = loaders.image(
os.path.sep.join(
(CONFIG.system_path, 'misc', 'shield.png')),
zoom=zoom * self.shield['power'] * 3)
shield_coords = (
coords[0] + int(
self.rect[0]
+ self.entity_skin.shield_center[0]
- .5 * image[1][2]) * zoom,
coords[1] + int(
self.rect[1]
+ self.entity_skin.shield_center[1]
- .5 * image[1][3]) * zoom)
surface.blit(image[0], shield_coords)
def update(self, deltatime, gametime, game):
"""
Global function to update everything about entity, deltatime is the
time ellapsed since the precedent frame, gametime is the time since
beginning of the game
"""
self.old_pos = [self.rect[:2], ] + self.old_pos
if (not self.entity_skin.animation.trails or len(self.old_pos) >
len(self.entity_skin.animation.trails)):
self.old_pos.pop()
if self.present:
self.entity_skin.update(gametime, self.reversed, self.upgraded)
self._update_physics(deltatime, game)
def _update_rect(self):
"""
update entity rect using position and harshape place/size, necessary
when entity moved or animation frame changed.
"""
h = self.hardshape
self._rect = [
self._place[0] - h[2] / 2 - h[0],
self._place[1] - h[1],
h[2],
h[3]]
def _foot_collision_rect(self):
"""
return current foot collision rect
"""
return pygame.Rect(
self.rect[0] + self.hardshape[0],
self.rect[1] + self.hardshape[3],
self.hardshape[2],
15)
def point(self, n):
"""
Return a collision point of the entity
"""
h = self.hardshape
r = self._rect
# i think r[0] and r[1] should be used in these formulas, but they break
# it, so maybe i'm wrong
return (int(Entity.list_sin_cos_1[n][0] * h[2] / 2 + r[0]),
int(Entity.list_sin_cos_1[n][1] * h[3] / 2 + r[1]))
def update_points(self, x=0, y=0):
""" Points are created as follows::
+-------------------+
| 7 0 |
| 6 1 |
| |
| 5 2 |
| 4 3 |
+-------------------+
As can be seen, they are oriented clock-wise, beginning in the
upper-right corner and ending in the upper-left.
"""
h = self.hardshape
r = self._rect
n = Entity.nb_points
# reference version, non-optimized and should be easier to
# understand
#l = Entity.list_sin_cos
#return [
# (
# int(l[i][0] * h[2] / 2 + h[2] / 2 + h[0] + r[0] + x),
# int(l[i][1] * h[3] / 2 + h[3] / 2 + h[1] + r[1] + y))
# for i in xrange(Entity.nb_points)]
# optimised version
h2_2 = h[2] / 2
h3_2 = h[3] / 2
hrx, hry = h[0] + r[0] + x, h[1] + r[1] + y
l2 = Entity.list_sin_cos_1
return [
(
int(l2[i][0] * h2_2 + hrx),
int(l2[i][1] * h3_2 + hry))
for i in xrange(n)]
def collide_top(self, game):
"""
if one of the two lower points collide, the entity bounces up and its
horizontal speed is lowered
"""
return (game.level.collide_rect(self.point(self.TOP_LEFT))
or game.level.collide_rect(self.point(self.TOP_RIGHT)))
def collide_bottom(self, game):
"""
test of points and consequences on vectors if one of the two upper
points collide, the entity bounces down.
"""
return (game.level.collide_rect(self.point(self.BOTTOM_RIGHT))
or game.level.collide_rect(self.point(self.BOTTOM_LEFT)))
def collide_front(self, game):
"""
if one of the two left points collide and the entity is not
reversed or one of the two right points collide and the entity is
reversed and the player is pushed forward.
"""
return (self.reversed and (
game.level.collide_rect(self.point(self.UPPER_RIGHT)) or
game.level.collide_rect(self.point(self.LOWER_RIGHT))) or
not self.reversed and (
game.level.collide_rect(self.point(self.LOWER_LEFT))
or game.level.collide_rect(self.point(self.UPPER_LEFT))))
def collide_back(self, game):
"""
if one of the two left points collide and the entity is reversed or one
of the two right points collide and the entity is not reversed and the
player bounce back.
"""
return (not self.reversed and (
game.level.collide_rect(self.point(self.UPPER_RIGHT)) or
game.level.collide_rect(self.point(self.LOWER_RIGHT))) or
self.reversed and (
game.level.collide_rect(self.point(self.UPPER_LEFT)) or
game.level.collide_rect(self.point(self.LOWER_LEFT))))
def _world_collide(self, game):
"""
This test collision of the entity with the map (game.level.map).
Method:
Generation of a contact test "circle" (only 8 points actualy).
Then we test points of this circle and modify entity vector based on
points that gets collided, moving the entity in the right direction to
get out of each collision.
"""
if not self.physic:
if game.level.collide_rect(self.point(self.TOP_LEFT)):
self.set_lives(0)
# this test should optimise most situations.
elif game.level.collide_rect(self.rect[:2], self.rect[2:]) != -1:
self._on_ground = False
if self.collide_top(game):
self._on_ground = True
self._vector[1] = -math.fabs(
self.vector[1] * CONFIG.general.BOUNCE)
self._vector[0] /= 2
while self.collide_top(game):
self.move((0, -1))
elif self.collide_bottom(game):
if self.vector[1] < 0:
self._vector[1] = int(
-self.vector[1] * CONFIG.general.BOUNCE)
self._vector[0] /= 2
while self.collide_bottom(game):
self.move((0, 1))
if self.collide_front(game):
self._vector[0] = math.fabs(self.vector[0]) / 2
while self.collide_front(game):
self.move((2, 0))
elif self.collide_back(game):
self._vector[0] = -math.fabs(self.vector[0]) / 2
while self.collide_back(game):
self.move((-2, 0))
def _update_physics(self, deltatime, game):
"""
This function applies current movemements and various environemental
vectors to the entity, and calculates collisions.
"""
# Move in walking direction.
self.move((
self.walking_vector[0] * deltatime,
self.walking_vector[1] * deltatime))
self.foot_rect = self._foot_collision_rect()
#self._on_ground = game.level.collide_rect(
#self.foot_rect[:2],
#self.foot_rect[2:])
# follow the floor if it's moving
floor_vector = self._update_floor_vector(game.level.moving_blocs)
# get environmental vector if we collide some vector-block
environnement_vector = self._get_block_vector(
game.level.vector_blocs)
environnement_friction = self._get_env_collision(
game.level.water_blocs)
self._vector = [
self.vector[0] + environnement_vector[0],
self.vector[1] + environnement_vector[1]]
self._place = [
self.place[0] + floor_vector[0],
self.place[1] + floor_vector[1]]
# Gravity
if self.gravity and self.physic and not self.on_ground:
self._vector[1] += float(CONFIG.general.GRAVITY) * deltatime
elif not self.physic:
#FIXME : it is a bit hackish
self._vector[1] += -0.00001
# Application of air friction.
f = CONFIG.general.AIR_FRICTION * environnement_friction
if self.physic: # FIXME: and not a bullet
self._vector[0] -= (f * self.vector[0] * deltatime)
self._vector[1] -= (f * self.vector[1] * deltatime)
# apply the vector to entity.
self.move((self.vector[0] * deltatime, self.vector[1] * deltatime))
if not self.physics:
return
# Avoid collisions with the map
self._world_collide(game)
@property
def rect(self):
"""
return current player rect
"""
return pygame.Rect(self._rect)
def move(self, (x, y)):
"""
move the entity relatively to his referencial (if he looks left, moving
positively on x means going left).
"""
if self._reversed:
x = -x
self.set_place((self._place[0] + x, self._place[1] + y))
self._update_rect()
