def _shoot(self, game):
from pygame.locals import K_SPACE
if self.stype and game.keystate[K_SPACE]:
u = unitVector(self.orientation)
newones = game._createSprite([self.stype], (self.lastrect.left + u[0] * self.lastrect.size[0],
self.lastrect.top + u[1] * self.lastrect.size[1]))
if len(newones) > 0 and isinstance(newones[0], OrientedSprite):
newones[0].orientation = unitVector(self.orientation)
self._reduceAmmo()
def _shoot(self, game):
from pygame.locals import K_SPACE
if self.stype and game.keystate[K_SPACE]:
u = unitVector(self.orientation)
newones = game._createSprite([self.stype], (self.lastrect.left + u[0] * self.lastrect.size[0],
self.lastrect.top + u[1] * self.lastrect.size[1]))
if len(newones) > 0 and isinstance(newones[0], OrientedSprite):
newones[0].orientation = unitVector(self.orientation)
self._reduceAmmo()
def conveySprite(sprite, partner, game):
""" Moves the partner in target direction by some step size. """
tmp = sprite.lastrect
v = unitVector(partner.orientation)
sprite.physics.activeMovement(sprite, v, speed=partner.strength)
sprite.lastrect = tmp
game._updateCollisionDict(sprite)
def conveySprite(sprite, partner, game):
""" Moves the partner in target direction by some step size. """
tmp = sprite.lastrect
v = unitVector(partner.orientation)
sprite.physics.activeMovement(sprite, v, speed=partner.strength)
sprite.lastrect = tmp
game._updateCollisionDict(sprite)
def slipForward(sprite, partner, game, prob=0.5):
""" Slip forward in the direction of the current orientation, sometimes."""
if prob > random():
tmp = sprite.lastrect
v = unitVector(sprite.orientation)
sprite.physics.activeMovement(sprite, v, speed=1)
sprite.lastrect = tmp
game._updateCollisionDict(sprite)
def slipForward(sprite, partner, game, prob=0.5):
""" Slip forward in the direction of the current orientation, sometimes."""
if prob > random():
tmp = sprite.lastrect
v = unitVector(sprite.orientation)
sprite.physics.activeMovement(sprite, v, speed=1)
sprite.lastrect = tmp
game._updateCollisionDict(sprite)
def _draw(self, game):
""" With a triangle that shows the orientation. """
VGDLSprite._draw(self, game)
if self.draw_arrow:
col = (self.color[0], 255 - self.color[1], self.color[2])
pygame.draw.polygon(
game.screen, col,
triPoints(self.rect, unitVector(self.orientation)))
def bounceDirection(sprite, partner, game, friction=0):
""" The centers of the objects determine the direction"""
stepBack(sprite, partner, game)
inc = sprite.orientation
snorm = unitVector((-sprite.rect.centerx + partner.rect.centerx,
- sprite.rect.centery + partner.rect.centery))
dp = snorm[0] * inc[0] + snorm[1] * inc[1]
sprite.orientation = (-2 * dp * snorm[0] + inc[0], -2 * dp * snorm[1] + inc[1])
sprite.speed *= (1. - friction)
def activeMovement(self, sprite, action, speed=None):
""" Here the assumption is that the controls determine the direction of
acceleration of the sprite. """
if speed is None:
speed = sprite.speed
v1 = action[0] / float(sprite.mass) + sprite.orientation[0] * speed
v2 = action[1] / float(sprite.mass) + sprite.orientation[1] * speed
sprite.orientation = unitVector((v1, v2))
sprite.speed = vectNorm((v1, v2)) / vectNorm(sprite.orientation)
def activeMovement(self, sprite, action, speed=None):
""" Here the assumption is that the controls determine the direction of
acceleration of the sprite. """
if speed is None:
speed = sprite.speed
v1 = action[0] / float(sprite.mass) + sprite.orientation[0] * speed
v2 = action[1] / float(sprite.mass) + sprite.orientation[1] * speed
sprite.orientation = unitVector((v1, v2))
sprite.speed = vectNorm((v1, v2)) / vectNorm(sprite.orientation)
def bounceDirection(sprite, partner, game, friction=0):
""" The centers of the objects determine the direction"""
stepBack(sprite, partner, game)
inc = sprite.orientation
snorm = unitVector((-sprite.rect.centerx + partner.rect.centerx,
- sprite.rect.centery + partner.rect.centery))
dp = snorm[0] * inc[0] + snorm[1] * inc[1]
sprite.orientation = (-2 * dp * snorm[0] + inc[0], -2 * dp * snorm[1] + inc[1])
sprite.speed *= (1. - friction)
def windGust(sprite, partner, game):
""" Moves the partner in target direction by some step size, but stochastically
(step, step-1 and step+1 are equally likely) """
s = choice([partner.strength, partner.strength + 1, partner.strength - 1])
if s != 0:
tmp = sprite.lastrect.copy()
v = unitVector(partner.orientation)
sprite.physics.activeMovement(sprite, v, speed=s)
sprite.lastrect = tmp
game._updateCollisionDict(sprite)
def _aim(self, game):
action = self._readAction(game)
if action in [UP, DOWN]:
if action == DOWN:
angle = self.angle_diff
else:
angle = -self.angle_diff
from math import cos, sin
self.orientation = unitVector((self.orientation[0]*cos(angle)-self.orientation[1]*sin(angle),
self.orientation[0]*sin(angle)+self.orientation[1]*cos(angle)))
def windGust(sprite, partner, game):
""" Moves the partner in target direction by some step size, but stochastically
(step, step-1 and step+1 are equally likely) """
s = choice([partner.strength, partner.strength + 1, partner.strength - 1])
if s != 0:
tmp = sprite.lastrect.copy()
v = unitVector(partner.orientation)
sprite.physics.activeMovement(sprite, v, speed=s)
sprite.lastrect = tmp
game._updateCollisionDict(sprite)
def bounceForward(sprite, partner, game): # FLAG
""" The partner sprite pushed, so if possible move in the opposite direction. """
# print "in beginning of bounceForward"
# embed()
sprite.physics.activeMovement(sprite, unitVector(partner.lastdirection))
game._updateCollisionDict(sprite)
# print "in second part of bounceForward"
# embed()
# return ('bounceForward', colorDict[str(partner.color)], colorDict[str(sprite.color)])
return ('bounceForward', sprite.ID, partner.ID)
def _aim(self, game):
action = self._readAction(game)
if action in [UP, DOWN]:
if action == DOWN:
angle = self.angle_diff
else:
angle = -self.angle_diff
from math import cos, sin
self.orientation = unitVector((self.orientation[0]*cos(angle)-self.orientation[1]*sin(angle),
self.orientation[0]*sin(angle)+self.orientation[1]*cos(angle)))
def pullWithIt(sprite, partner, game):
""" The partner sprite adds its movement to the sprite's. """
if not oncePerStep(sprite, game, 'lastpull'):
return
tmp = sprite.lastrect
v = unitVector(partner.lastdirection)
sprite._updatePos(v, partner.speed * sprite.physics.gridsize[0])
if isinstance(sprite.physics, ContinuousPhysics):
sprite.speed = partner.speed
sprite.orientation = partner.lastdirection
sprite.lastrect = tmp
def pullWithIt(sprite, partner, game):
""" The partner sprite adds its movement to the sprite's. """
if not oncePerStep(sprite, game, 'lastpull'):
return
tmp = sprite.lastrect
v = unitVector(partner.lastdirection)
sprite._updatePos(v, partner.speed * sprite.physics.gridsize[0])
if isinstance(sprite.physics, ContinuousPhysics):
sprite.speed = partner.speed
sprite.orientation = partner.lastdirection
sprite.lastrect = tmp
def wallStop(sprite, partner, game, friction=0): # FLAG
""" Stop just in front of the wall, removing that velocity component,
but possibly sliding along it. """
if not oncePerStep(sprite, game, 'laststop'):
return
stepBack(sprite, partner, game)
if abs(sprite.rect.centerx - partner.rect.centerx) > abs(sprite.rect.centery - partner.rect.centery):
sprite.orientation = (0, sprite.orientation[1] * (1. - friction))
else:
sprite.orientation = (sprite.orientation[0] * (1. - friction), 0)
sprite.speed = vectNorm(sprite.orientation) * sprite.speed
sprite.orientation = unitVector(sprite.orientation)
def wallStop(sprite, partner, game, friction=0):
""" Stop just in front of the wall, removing that velocity component,
but possibly sliding along it. """
if not oncePerStep(sprite, game, 'laststop'):
return
stepBack(sprite, partner, game)
if abs(sprite.rect.centerx - partner.rect.centerx) > abs(sprite.rect.centery - partner.rect.centery):
sprite.orientation = (0, sprite.orientation[1] * (1. - friction))
else:
sprite.orientation = (sprite.orientation[0] * (1. - friction), 0)
sprite.speed = vectNorm(sprite.orientation) * sprite.speed
sprite.orientation = unitVector(sprite.orientation)
def bounceForward(sprite, partner, game):
""" The partner sprite pushed, so if possible move in the opposite direction. """
sprite.physics.activeMovement(sprite, unitVector(partner.lastdirection))
game._updateCollisionDict(sprite)
return ('bounceForward', colorName(partner.color), colorName(sprite.color))
def _draw(self, game):
""" With a triangle that shows the orientation. """
VGDLSprite._draw(self, game)
if self.draw_arrow:
col = (self.color[0], 255 - self.color[1], self.color[2])
pygame.draw.polygon(game.screen, col, triPoints(self.rect, unitVector(self.orientation)))
def bounceForward(sprite, partner, game):
""" The partner sprite pushed, so if possible move in the opposite direction. """
sprite.physics.activeMovement(sprite, unitVector(partner.lastdirection))
game._updateCollisionDict(sprite)