def display( self, screen ):
if self.grounded:
xt, yt = Scrolling().location_pixels_to_meters( *self.aim )
vx, vy = physics.vxy( self.x0, xt, self.ax,
self.y0, yt, self.ay,
self.max_vx )
else:
vx, vy = self.vxy
# TODO: display curve of jump
times = [ i/10. for i in range(21) ]
x_points = [physics.position( self.x0, vx, self.ax, t ) for t in times]
y_points = [physics.position( self.y0, vy, self.ay, t ) for t in times]
points = zip( x_points, y_points )
points = [Scrolling().location_meters_to_pixels(*xy) for xy in points]
pygame.draw.aalines( screen, c.RED, False, points )
def calculate_trajectory(self):
mouse_x, mouse_y = pygame.mouse.get_pos()
mouse_vector = Vector(mouse_x, mouse_y)
angle = physics.angle(mouse_vector, self.mouse_position)
power = physics.distance(self.mouse_position, mouse_vector)
if power > self.max_power:
power = self.max_power
trajectory = physics.position(angle, power, self.position)
return trajectory
def calculate_y( self, dt ):
y = self.owner.bottom
self.owner.bottom = physics.position( y, self.vy, self.ay, dt )
self.vy = physics.velocity( self.vy, self.ay, dt )
def calculate_x( self, dt ):
self.owner.x = physics.position( self.owner.x, self.vx, self.ax, dt )
self.vx = physics.velocity( self.vx, self.ax, dt )