elif (phase == 2):
if launch_prepped == False:
# sets the spaceship's position to be equal to earth, but with diff major axis and ecc
spaceship.r = bodies[0].r
spaceship.initial_angle = bodies[0].angle
spaceship.angle = 0
spaceship.velocity = math.sqrt(
G * sun_mass * (2 / spaceship.r - 1 / spaceship.a)) #+ 11500
spaceship.a, spaceship.eccentricity = bodies[
0].get_transfer_ellipse(bodies[1])
delta_v = spaceship.velocity - math.sqrt(
G * sun_mass / spaceship.r)
spaceship.energy = bodies[0].energy
spaceship.energy += delta_v**2 / 2
spaceship.areal_v *= 1.1 # ((G*G*sun_mass*sun_mass*(spaceship.eccentricity**2 - 1))/(8*spaceship.energy))**0.5
spaceship.colour = (210, 210, 210)
spaceship.q = spaceship.a * (1 - spaceship.eccentricity**2)
launch_prepped = True
spaceship_surface.set_colorkey((0, 0, 0))
pygame.draw.circle(
spaceship_surface, spaceship.colour,
pxs(body_scale * spaceship.body_radius,
body_scale * spaceship.body_radius),
px(body_scale * spaceship.body_radius))
spaceship_surface = spaceship_surface.convert()
px_x, px_y = convert_coords(
math.cos(
math.radians(spaceship.angle + spaceship.initial_angle)) *
spaceship.r,
math.sin(
phase = 2
print ("Launching!")
elif(phase == 2):
if launch_prepped == False:
# sets the spaceship's position to be equal to earth, but with diff major axis and ecc
spaceship.r = bodies[0].r
spaceship.initial_angle = bodies[0].angle
spaceship.angle = 0
spaceship.velocity = math.sqrt(G*sun_mass*(2/spaceship.r - 1/spaceship.a))
spaceship.a, spaceship.eccentricity = bodies[0].get_transfer_ellipse(bodies[1])
delta_v = spaceship.velocity - math.sqrt(G*sun_mass/spaceship.r)
spaceship.energy = bodies[0].energy
spaceship.energy += delta_v**2/2
spaceship.areal_v *= 1.08 #((G*G*sun_mass*sun_mass*(spaceship.eccentricity**2 - 1))/(8*spaceship.energy))**0.5
spaceship.colour = (183,183,183)
spaceship.q = spaceship.a*(1 - spaceship.eccentricity**2)
launch_prepped = True
spaceship_surface.set_colorkey((0,0,0))
pygame.draw.circle(spaceship_surface, spaceship.colour, pxs(body_scale*spaceship.body_radius, body_scale*spaceship.body_radius), px(body_scale*spaceship.body_radius))
spaceship_surface = spaceship_surface.convert()
px_x, px_y = convert_coords(math.cos(math.radians(spaceship.angle + spaceship.initial_angle))*spaceship.r, math.sin(math.radians(spaceship.angle + spaceship.initial_angle))*spaceship.r)
screen.blit(spaceship_surface, (px_x-px(body_scale*spaceship.body_radius), px_y-px(body_scale*spaceship.body_radius)))
else:
spaceship_surface.set_colorkey((0,0,0))
pygame.draw.circle(spaceship_surface, spaceship.colour, pxs(body_scale*spaceship.body_radius, body_scale*spaceship.body_radius), px(body_scale*spaceship.body_radius))
spaceship_surface = spaceship_surface.convert()
centered_coords = spaceship.spaceship_update(ms*secs_per_msecs)
px_x, px_y = convert_coords(*centered_coords)
screen.blit(spaceship_surface, (px_x-px(body_scale*spaceship.body_radius), px_y-px(body_scale*spaceship.body_radius)))
