def __init__( self, center, boundary, radius=10):
self.center = center
self.radius = max(MIN_RADIUS, min(radius, MAX_RADIUS))
self.boundary = boundary
self.rotation_angle = 0
self.rotation_velocity = MAX_ANGLE_VELOCITY - (self.radius-1.0)/MAX_RADIUS*MAX_ANGLE_VELOCITY;
# velocity specifies the number of pixels the object
# will be moved in a single movement operation.
self.mass = math.pi * self.radius**2.0
self.global_speed = 1.0;
self.velocity = get_v(self.radius) #random.randrange(100.0, 400.0, 1)/100.0
self.direction = random.random() * math.pi * 2
self.hit_wall_sound = SoundCell(new_sound_file( ))
#print "r=%g, v=%g alpha=%g" % (self.radius, self.velocity, self.rotation_velocity)
print "_init__ sprite..."
class GraphicalObject:
def __init__( self, center, boundary, radius=10):
self.center = center
self.radius = max(MIN_RADIUS, min(radius, MAX_RADIUS))
self.boundary = boundary
self.rotation_angle = 0
self.rotation_velocity = MAX_ANGLE_VELOCITY - (self.radius-1.0)/MAX_RADIUS*MAX_ANGLE_VELOCITY;
# velocity specifies the number of pixels the object
# will be moved in a single movement operation.
self.mass = math.pi * self.radius**2.0
self.global_speed = 1.0;
self.velocity = get_v(self.radius) #random.randrange(100.0, 400.0, 1)/100.0
self.direction = random.random() * math.pi * 2
self.hit_wall_sound = SoundCell(new_sound_file( ))
#print "r=%g, v=%g alpha=%g" % (self.radius, self.velocity, self.rotation_velocity)
print "_init__ sprite..."
#def __del__(self):
# print str("__dell__ sprite...")
# self.hit_wall_sound.soundFile(False)
def set_sound(self, state):
self.hit_wall_sound.set_sound(state)
def get_boundry(self):
return self.boundry
def get_radius(self):
return self.radius
def get_rotation_angle(self):
return self.rotation_angle
def shrink(self):
if self.radius > 5:
self.radius -= 3
def enlarge(self):
self.radius = self.radius + 3
def set_color(self, new_color):
self.color = new_color
def get_center(self):
return self.center
def set_radius( self, new_radius):
if new_radius > 3:
self.radius = new_radius
def get_velocity(self):
return self.velocity * self.global_speed
def get_direction(self):
return self.direction
# The move() method is supposed to be called something like 25 times a second.
def move(self):
v = self.get_velocity( );
self.center.setX(self.center.x() + v * math.cos(self.direction))
self.center.setY(self.center.y() - v * math.sin(self.direction))
hit_wall = self.correct_pos( );
self.rotation_angle += self.rotation_velocity
if self.rotation_angle >= 360:
self.rotation_angle = 0
if hit_wall:
self.hit_wall_sound.play( )
return hit_wall
def move_right(self):
self.center.setX(self.center.x() + self.get_velocity())
def move_left(self):
self.center.setX(self.center.x() - self.get_velocity())
def move_up(self):
self.center.setY(self.center.y() - self.get_velocity())
def move_down(self):
self.center.setY(self.center.y() + self.get_velocity())
def move_to( self, pos_x, pos_y):
self.center.setX(self.center.x() + pos_x)
self.center.setY(self.center.y() + pos_y)
def contains_point(self, pos):
# Here we use the Pythagorean theorem to calculate the distance
# from the given point to the center point of the ball.
distance_from_pos_to_center = math.sqrt(math.pow(self.center.x()- pos.x, 2) + math.pow(self.center.y()- pos.y, 2))
return distance_from_pos_to_center <= self.radius
def colides(self, other):
other_center = other.get_center( )
d = math.sqrt(math.pow(self.center.x()-other_center.x( ), 2) + math.pow(self.center.y()-other_center.y( ), 2))
r2 = self.get_radius( ) + other.get_radius( );
do_colide = (True if d<r2 else False)
#if do_colide:
# print "%g, %g" % (d, r2)
return do_colide
# reverts the direction of the movement
def revert(self):
self.direction = 2 * math.pi - self.direction
# sets the global speed multiplier of this
def set_global_speed(self, spped):
self.global_speed = max(0, min(spped, 1.0))
# correct the direction of the object if it is out of bounddry
def correct_pos(self):
(hit_wall, self.center, self.direction) = self.boundary.new_direction(self.get_center(), self.get_radius(), self.direction)
return hit_wall
