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main.py
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main.py
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import asyncio
import ctypes
import math
from pathlib import Path
import platform
import sys
import time
import numpy as np
import os
import pygame
import pygame.font
from pygame.sprite import Sprite
class GravitySimulator:
"""Overall class to manage the main program."""
def __init__(self):
"""
Initialize the main program.
Initialization dependencies:
settings: none
menu: none
camera: none
stats: settings
grav_objs: camera, settings
simulator: stats, settings
"""
# Use c library to perform simulation
self.is_c_lib = True
if self.is_c_lib:
try:
self.c_lib = ctypes.cdll.LoadLibrary(
str(Path(__file__).parent / "c_lib.wasm")
)
except:
print("System message: Loading c_lib failed. Running with numpy.")
self.is_c_lib = False
if self.is_c_lib:
self.c_lib.compute_energy.restype = ctypes.c_double
pygame.init()
self.settings = Settings(
pygame.display.Info().current_w,
pygame.display.Info().current_h,
)
self.screen = pygame.display.set_mode(
(self.settings.screen_width, self.settings.screen_height),
)
#pygame.display.set_caption("Gravity Simulator")
self.clock = pygame.time.Clock()
self.menu = Menu(self)
self.camera = Camera()
self.stats = Stats(self)
self.grav_objs = pygame.sprite.Group()
self.simulator = Simulator(self)
async def run_prog(self):
"""The main loop for the program"""
while True:
self._check_events()
self._update_events()
self._simulation()
self._check_energy_error()
self._update_screen()
self.clock.tick(self.settings.MAX_FPS)
await asyncio.sleep(0)
def _check_events(self):
self.simulator.check_current_integrator()
self.settings.check_current_changing_parameter()
for event in pygame.event.get():
match event.type:
case pygame.KEYDOWN:
self._check_key_down_events(event)
case pygame.KEYUP:
self._check_key_up_events(event)
case pygame.MOUSEBUTTONDOWN:
self._check_mouse_button_down_events(event)
case pygame.MOUSEBUTTONUP:
self._check_mouse_button_up_events(event)
case pygame.MOUSEWHEEL:
self.settings.scroll_change_parameters(event.y)
case pygame.QUIT:
sys.exit()
def _update_events(self):
self.camera.update_movement()
self.grav_objs.update(self)
self.stats.update(self)
def _simulation(self):
if self.grav_objs and not self.stats.is_paused:
self.simulator.run_simulation(self)
self.simulator.unload_value(self)
def _check_energy_error(self):
if math.isnan(self.stats.total_energy):
self._kill_all_objects()
print("System message: removed all objects due to infinity energy error.")
def _kill_all_objects(self):
for grav_obj in self.grav_objs:
grav_obj.kill()
self.stats.total_energy = 0.0
self.simulator.is_initialize = True
def _update_screen(self):
self.screen.fill(Settings.BG_COLOR)
self.grav_objs.draw(self.screen)
if self.settings.is_hide_gui == False:
self.stats.draw(self)
if self.stats.is_holding_rclick == True:
self._new_star_draw_line_circle()
if self.menu.menu_active == True:
self.menu.draw()
pygame.display.flip()
def _check_key_up_events(self, event):
match event.key:
case up if up in [pygame.K_w, pygame.K_UP]:
self.camera.moving_up = False
case left if left in [pygame.K_a, pygame.K_LEFT]:
self.camera.moving_left = False
case down if down in [pygame.K_s, pygame.K_DOWN]:
self.camera.moving_down = False
case right if right in [pygame.K_d, pygame.K_RIGHT]:
self.camera.moving_right = False
def _check_key_down_events(self, event):
match event.key:
case up if up in [pygame.K_w, pygame.K_UP]:
self.camera.moving_up = True
case left if left in [pygame.K_a, pygame.K_LEFT]:
self.camera.moving_left = True
case down if down in [pygame.K_s, pygame.K_DOWN]:
self.camera.moving_down = True
case right if right in [pygame.K_d, pygame.K_RIGHT]:
self.camera.moving_right = True
case pygame.K_p:
if self.stats.is_paused == False:
self.stats.start_pause()
elif self.stats.is_paused == True:
self.stats.end_pause()
case pygame.K_f:
pygame.display.toggle_fullscreen()
case pygame.K_h:
self.settings.is_hide_gui = not self.settings.is_hide_gui
case pygame.K_r:
self.settings.reset_parameters()
case pygame.K_ESCAPE:
if self.menu.main_menu_active == False:
self.menu.menu_active = not self.menu.menu_active
def _check_mouse_button_down_events(self, event):
if event.button == 1: # left click
mouse_pos = pygame.mouse.get_pos()
self.stats.check_button(self, mouse_pos)
if self.menu.menu_active == True:
self.menu.check_button(self, mouse_pos)
elif event.button == 3: # right click
if self.menu.menu_active == False:
mouse_pos = pygame.mouse.get_pos()
self.stats.start_holding_rclick()
self.new_star_mouse_pos = mouse_pos
self.new_star_camera_pos = self.camera.pos
def _check_mouse_button_up_events(self, event):
if event.button == 3: # right click up
if self.stats.is_holding_rclick == True:
self.new_star_drag_mouse_pos = (
pygame.mouse.get_pos()
) # for object's velocity
self.stats.end_holding_rclick()
Grav_obj.create_star(
self,
self.new_star_mouse_pos,
self.new_star_camera_pos,
self.new_star_drag_mouse_pos,
self.camera.pos,
)
def _new_star_draw_line_circle(self):
pygame.draw.line(
self.screen,
"white",
(
self.new_star_mouse_pos[0]
+ (self.new_star_camera_pos[0] - self.camera.pos[0]),
self.new_star_mouse_pos[1]
+ (self.new_star_camera_pos[1] - self.camera.pos[1]),
),
pygame.mouse.get_pos(),
)
m = 1 * 0.5 * self.stats.holding_rclick_time * self.settings.new_star_mass_scale
R = Grav_obj.SOLAR_RADIUS * (m ** (1.0 / 3.0))
img_R = (
R
* (699.0 / 894.0) # Actual Sun size in images/sun.png with size (894 x 894)
* self.settings.star_img_scale
)
new_star_circle_pos = [
self.new_star_mouse_pos[0]
+ (self.new_star_camera_pos[0] - self.camera.pos[0]),
self.new_star_mouse_pos[1]
+ (self.new_star_camera_pos[1] - self.camera.pos[1]),
]
pygame.draw.circle(self.screen, "orange", new_star_circle_pos, img_R, width=1)
class Camera:
def __init__(self):
self._pos = [0, 0]
self.speed = [10, 10]
# Movement flag
self.moving_right = False
self.moving_left = False
self.moving_up = False
self.moving_down = False
@property
def pos(self):
return tuple(self._pos)
def update_movement(self):
if self.moving_right == True:
self._pos[0] += self.speed[0]
if self.moving_left == True:
self._pos[0] -= self.speed[0]
if self.moving_up == True:
self._pos[1] -= self.speed[1]
if self.moving_down == True:
self._pos[1] += self.speed[1]
class Text_box:
"""A class to build text boxes"""
def __init__(
self,
grav_sim,
font_size: int,
size_factor_x: float = None,
size_factor_y: float = None,
size_x: int = None,
size_y: int = None,
font: str = None,
msg: str = None,
text_box_color: tuple = None,
text_color: tuple = (255, 255, 255),
center: tuple = None,
text_box_left_top: tuple = (0, 0),
) -> None:
"""Initialize text box attributes."""
self.screen = grav_sim.screen
self.screen_rect = self.screen.get_rect()
# Set the dimensions and properties of the text box.
if size_factor_x != None:
self.width = size_factor_x * grav_sim.settings.screen_width
else:
self.width = size_x
if size_factor_y != None:
self.height = size_factor_y * grav_sim.settings.screen_height
else:
self.height = size_y
self.textbox_color = text_box_color
self.text_color = text_color
main_dir_path = os.path.dirname(__file__)
path_manrope = os.path.join(main_dir_path, "assets/fonts/Manrope-Regular.ttf")
if font == "Manrope":
self.font = pygame.font.Font(path_manrope, font_size)
else:
self.font = pygame.font.SysFont(font, font_size)
# Build the text box's rect object and center it.
self.center = center
self.text_box_left_top = text_box_left_top
self.rect = pygame.Rect(
self.text_box_left_top[0],
self.text_box_left_top[1],
self.width,
self.height,
)
if self.center:
self.rect.center = self.center
# The message needs to be printed only once.
if msg:
self.print_msg(msg)
def print_msg(self, msg) -> None:
"""Turn msg into a rendered image and center text on the text box."""
self.msg_image = self.font.render(
msg, True, self.text_color, self.textbox_color
)
self.msg_image_rect = self.msg_image.get_rect()
if self.center:
self.msg_image_rect.center = self.rect.center
else:
self.msg_image_rect.left = self.text_box_left_top[0]
self.msg_image_rect.top = self.text_box_left_top[1]
def draw(self) -> None:
"""Draw blank text box and then draw message."""
if self.textbox_color:
self.screen.fill(self.textbox_color, self.rect)
self.screen.blit(self.msg_image, self.msg_image_rect)
class Grav_obj(Sprite):
# Conversion factor from km^3 s^-2 to AU^3 d^-2
CONVERSION_FACTOR = (86400**2) / (149597870.7**3)
# GM values (km^3 s^-2)
# ref: https://ssd.jpl.nasa.gov/doc/Park.2021.AJ.DE440.pdf
GM_SI = {
"Sun": 132712440041.279419,
"Mercury": 22031.868551,
"Venus": 324858.592000,
"Earth": 398600.435507,
"Mars": 42828.375816,
"Jupiter": 126712764.100000,
"Saturn": 37940584.841800,
"Uranus": 5794556.400000,
"Neptune": 6836527.100580,
"Moon": 4902.800118,
"Pluto": 975.500000,
"Ceres": 62.62890,
"Vesta": 17.288245,
}
# GM values (AU^3 d^-2)
GM = {
"Sun": 132712440041.279419 * CONVERSION_FACTOR,
"Mercury": 22031.868551 * CONVERSION_FACTOR,
"Venus": 324858.592000 * CONVERSION_FACTOR,
"Earth": 398600.435507 * CONVERSION_FACTOR,
"Mars": 42828.375816 * CONVERSION_FACTOR,
"Jupiter": 126712764.100000 * CONVERSION_FACTOR,
"Saturn": 37940584.841800 * CONVERSION_FACTOR,
"Uranus": 5794556.400000 * CONVERSION_FACTOR,
"Neptune": 6836527.100580 * CONVERSION_FACTOR,
"Moon": 4902.800118 * CONVERSION_FACTOR,
"Pluto": 975.500000 * CONVERSION_FACTOR,
"Ceres": 62.62890 * CONVERSION_FACTOR,
"Vesta": 17.288245 * CONVERSION_FACTOR,
}
# Solar system masses (M_sun^-1)
SOLAR_SYSTEM_MASSES = {
"Sun": 1.0,
"Mercury": GM_SI["Mercury"] / GM_SI["Sun"],
"Venus": GM_SI["Venus"] / GM_SI["Sun"],
"Earth": GM_SI["Earth"] / GM_SI["Sun"],
"Mars": GM_SI["Mars"] / GM_SI["Sun"],
"Jupiter": GM_SI["Jupiter"] / GM_SI["Sun"],
"Saturn": GM_SI["Saturn"] / GM_SI["Sun"],
"Uranus": GM_SI["Uranus"] / GM_SI["Sun"],
"Neptune": GM_SI["Neptune"] / GM_SI["Sun"],
"Moon": GM_SI["Moon"] / GM_SI["Sun"],
"Pluto": GM_SI["Pluto"] / GM_SI["Sun"],
"Ceres": GM_SI["Ceres"] / GM_SI["Sun"],
"Vesta": GM_SI["Vesta"] / GM_SI["Sun"],
}
# Gravitational constant (kg^-1 m^3 s^-2):
G_SI = 6.67430e-11
# Gravitational constant (M_sun^-1 AU^3 d^-2):
G = GM["Sun"]
# Solar system position and velocities data
# Units: AU-D
# Coordinate center: Solar System Barycenter
# Data dated on A.D. 2024-Jan-01 00:00:00.0000 TDB
# Computational data generated by NASA JPL Horizons System https://ssd.jpl.nasa.gov/horizons/
SOLAR_SYSTEM_POS = {
"Sun": [-7.967955691533730e-03, -2.906227441573178e-03, 2.103054301547123e-04],
"Mercury": [
-2.825983269538632e-01,
1.974559795958082e-01,
4.177433558063677e-02,
],
"Venus": [
-7.232103701666379e-01,
-7.948302026312400e-02,
4.042871428174315e-02,
],
"Earth": [-1.738192017257054e-01, 9.663245550235138e-01, 1.553901854897183e-04],
"Mars": [-3.013262392582653e-01, -1.454029331393295e00, -2.300531433991428e-02],
"Jupiter": [3.485202469657674e00, 3.552136904413157e00, -9.271035442798399e-02],
"Saturn": [8.988104223143450e00, -3.719064854634689e00, -2.931937777323593e-01],
"Uranus": [1.226302417897505e01, 1.529738792480545e01, -1.020549026883563e-01],
"Neptune": [
2.983501460984741e01,
-1.793812957956852e00,
-6.506401132254588e-01,
],
"Moon": [-1.762788124769829e-01, 9.674377513177153e-01, 3.236901585768862e-04],
"Pluto": [1.720200478843485e01, -3.034155683573043e01, -1.729127607100611e00],
"Ceres": [-1.103880510367569e00, -2.533340440444230e00, 1.220283937721780e-01],
"Vesta": [-8.092549658731499e-02, 2.558381434460076e00, -6.695836142398572e-02],
}
SOLAR_SYSTEM_VEL = {
"Sun": [4.875094764261564e-06, -7.057133213976680e-06, -4.573453713094512e-08],
"Mercury": [
-2.232165900189702e-02,
-2.157207103176252e-02,
2.855193410495743e-04,
],
"Venus": [
2.034068201002341e-03,
-2.020828626592994e-02,
-3.945639843855159e-04,
],
"Earth": [
-1.723001232538228e-02,
-2.967721342618870e-03,
6.382125383116755e-07,
],
"Mars": [1.424832259345280e-02, -1.579236181580905e-03, -3.823722796161561e-04],
"Jupiter": [
-5.470970658852281e-03,
5.642487338479145e-03,
9.896190602066252e-05,
],
"Saturn": [
1.822013845554067e-03,
5.143470425888054e-03,
-1.617235904887937e-04,
],
"Uranus": [
-3.097615358317413e-03,
2.276781932345769e-03,
4.860433222241686e-05,
],
"Neptune": [
1.676536611817232e-04,
3.152098732861913e-03,
-6.877501095688201e-05,
],
"Moon": [
-1.746667306153906e-02,
-3.473438277358121e-03,
-3.359028758606074e-05,
],
"Pluto": [2.802810313667557e-03, 8.492056438614633e-04, -9.060790113327894e-04],
"Ceres": [
8.978653480111301e-03,
-4.873256528198994e-03,
-1.807162046049230e-03,
],
"Vesta": [
-1.017876585480054e-02,
-5.452367109338154e-04,
1.255870551153315e-03,
],
}
# Solar radius (AU)
SOLAR_RADIUS = 0.004650467261
def __init__(
self,
grav_sim,
params: dict,
img_path: str = None,
name: str = None,
):
super().__init__()
self.screen = grav_sim.screen
self.screen_rect = self.screen.get_rect()
self.camera = grav_sim.camera
self.settings = grav_sim.settings
self.params = params
self.diameter = 2 * self.params["R"]
if name == "Sun":
self.img_diameter = self.diameter * self.settings.star_img_scale
else:
self.img_diameter = self.diameter * self.settings.planet_img_scale
if img_path:
try:
load_image = pygame.image.load(img_path).convert_alpha()
self.image = pygame.transform.scale(
load_image, (self.img_diameter, self.img_diameter)
)
self.rect = self.image.get_rect()
except FileNotFoundError:
sys.exit(
"Error: Image not found. Make sure the image path provided for Grav_obj is correct."
)
def update(self, gravity_sim):
if self.remove_out_of_range_objs():
gravity_sim.simulator.is_initialize = True
else:
self.update_apparent_pos()
def remove_out_of_range_objs(self):
"""Remove object when position is out of range"""
if abs(self.params["r1"]) > self.settings.MAX_RANGE or abs(self.params["r2"]) > self.settings.MAX_RANGE or abs(self.params["r3"]) > self.settings.MAX_RANGE:
self.kill()
print("System message: Out of range object removed.")
return True
else:
return False
def update_apparent_pos(self):
"""Update the apparent position of all grav_objs with camera"""
try:
self.rect.center = (
self.params["r1"] * self.settings.distance_scale
+ self.screen_rect.centerx
- self.camera.pos[0],
-self.params["r2"] * self.settings.distance_scale
+ self.screen_rect.centery
- self.camera.pos[1],
)
except TypeError:
pass
def create_star(grav_sim, mouse_pos, camera_pos, drag_mouse_pos, drag_camera_pos):
main_dir_path = os.path.dirname(__file__)
path_sun = os.path.join(main_dir_path, "assets/images/sun.png")
m = (
1
* 0.5
* grav_sim.stats.holding_rclick_time
* grav_sim.settings.new_star_mass_scale
)
R = Grav_obj.SOLAR_RADIUS * (m ** (1.0 / 3.0))
new_star_r1 = (mouse_pos[0] - grav_sim.screen.get_rect().centerx + camera_pos[0]) / grav_sim.settings.distance_scale
new_star_r2 = -(mouse_pos[1] - grav_sim.screen.get_rect().centery + camera_pos[1])/ grav_sim.settings.distance_scale
new_star_r3 = 0.0
# Check if two objects has the exact same position, which would causes error
flag = True
for grav_obj in grav_sim.grav_objs:
if new_star_r1 == grav_obj.params["r1"] and new_star_r2 == grav_obj.params["r2"] and new_star_r3 == grav_obj.params["r3"]:
flag = False
if flag == True:
grav_obj = Grav_obj(
grav_sim,
{
"r1": new_star_r1,
"r2": new_star_r2,
"r3": new_star_r3,
"v1": -(
(drag_mouse_pos[0] - mouse_pos[0])
+ (drag_camera_pos[0] - camera_pos[0])
)
* grav_sim.settings.new_star_speed_scale * Settings.NEW_STAR_SPEED_CONVERT_FACTOR,
"v2": (
(drag_mouse_pos[1] - mouse_pos[1])
+ (drag_camera_pos[1] - camera_pos[1])
)
* grav_sim.settings.new_star_speed_scale * Settings.NEW_STAR_SPEED_CONVERT_FACTOR,
"v3": 0.0,
"m": m,
"R": R,
},
path_sun,
name="Sun",
)
grav_sim.grav_objs.add(grav_obj)
grav_sim.simulator.is_initialize = True
grav_sim.simulator.is_initialize_integrator = (
grav_sim.simulator.current_integrator
)
@staticmethod
def create_solor_system(grav_sim):
"""
Create the solar system
Data dated on A.D. 2024-Jan-01 00:00:00.0000 TDB
Computational data generated by NASA JPL Horizons System https://ssd.jpl.nasa.gov/horizons/
"""
main_dir_path = os.path.dirname(__file__)
path_sun = os.path.join(main_dir_path, "assets/images/sun.png")
path_mercury = os.path.join(main_dir_path, "assets/images/mercury.png")
path_venus = os.path.join(main_dir_path, "assets/images/venus.png")
path_earth = os.path.join(main_dir_path, "assets/images/earth.png")
path_mars = os.path.join(main_dir_path, "assets/images/mars.png")
path_jupiter = os.path.join(main_dir_path, "assets/images/jupiter.png")
path_saturn = os.path.join(main_dir_path, "assets/images/saturn.png")
path_uranus = os.path.join(main_dir_path, "assets/images/uranus.png")
path_neptune = os.path.join(main_dir_path, "assets/images/neptune.png")
# r1 - r3: Positions (AU), v1 - v3: Velocities (AU/d), m: Mass (Solar masses)
sun = Grav_obj(
grav_sim,
{
"r1": Grav_obj.SOLAR_SYSTEM_POS["Sun"][0],
"r2": Grav_obj.SOLAR_SYSTEM_POS["Sun"][1],
"r3": Grav_obj.SOLAR_SYSTEM_POS["Sun"][2],
"v1": Grav_obj.SOLAR_SYSTEM_VEL["Sun"][0],
"v2": Grav_obj.SOLAR_SYSTEM_VEL["Sun"][1],
"v3": Grav_obj.SOLAR_SYSTEM_VEL["Sun"][2],
"m": Grav_obj.SOLAR_SYSTEM_MASSES["Sun"],
"R": Grav_obj.SOLAR_RADIUS,
},
path_sun,
name="Sun",
)
mercury = Grav_obj(
grav_sim,
{
"r1": Grav_obj.SOLAR_SYSTEM_POS["Mercury"][0],
"r2": Grav_obj.SOLAR_SYSTEM_POS["Mercury"][1],
"r3": Grav_obj.SOLAR_SYSTEM_POS["Mercury"][2],
"v1": Grav_obj.SOLAR_SYSTEM_VEL["Mercury"][0],
"v2": Grav_obj.SOLAR_SYSTEM_VEL["Mercury"][1],
"v3": Grav_obj.SOLAR_SYSTEM_VEL["Mercury"][2],
"m": Grav_obj.SOLAR_SYSTEM_MASSES["Mercury"],
"R": 1.63083872e-05,
},
path_mercury,
)
venus = Grav_obj(
grav_sim,
{
"r1": Grav_obj.SOLAR_SYSTEM_POS["Venus"][0],
"r2": Grav_obj.SOLAR_SYSTEM_POS["Venus"][1],
"r3": Grav_obj.SOLAR_SYSTEM_POS["Venus"][2],
"v1": Grav_obj.SOLAR_SYSTEM_VEL["Venus"][0],
"v2": Grav_obj.SOLAR_SYSTEM_VEL["Venus"][1],
"v3": Grav_obj.SOLAR_SYSTEM_VEL["Venus"][2],
"m": Grav_obj.SOLAR_SYSTEM_MASSES["Venus"],
"R": 4.04537843e-05,
},
path_venus,
)
earth = Grav_obj(
grav_sim,
{
"r1": Grav_obj.SOLAR_SYSTEM_POS["Earth"][0],
"r2": Grav_obj.SOLAR_SYSTEM_POS["Earth"][1],
"r3": Grav_obj.SOLAR_SYSTEM_POS["Earth"][2],
"v1": Grav_obj.SOLAR_SYSTEM_VEL["Earth"][0],
"v2": Grav_obj.SOLAR_SYSTEM_VEL["Earth"][1],
"v3": Grav_obj.SOLAR_SYSTEM_VEL["Earth"][2],
"m": Grav_obj.SOLAR_SYSTEM_MASSES["Earth"],
"R": 4.25875046e-05,
},
path_earth,
)
mars = Grav_obj(
grav_sim,
{
"r1": Grav_obj.SOLAR_SYSTEM_POS["Mars"][0],
"r2": Grav_obj.SOLAR_SYSTEM_POS["Mars"][1],
"r3": Grav_obj.SOLAR_SYSTEM_POS["Mars"][2],
"v1": Grav_obj.SOLAR_SYSTEM_VEL["Mars"][0],
"v2": Grav_obj.SOLAR_SYSTEM_VEL["Mars"][1],
"v3": Grav_obj.SOLAR_SYSTEM_VEL["Mars"][2],
"m": Grav_obj.SOLAR_SYSTEM_MASSES["Mars"],
"R": 2.26574081e-05,
},
path_mars,
)
jupiter = Grav_obj(
grav_sim,
{
"r1": Grav_obj.SOLAR_SYSTEM_POS["Jupiter"][0],
"r2": Grav_obj.SOLAR_SYSTEM_POS["Jupiter"][1],
"r3": Grav_obj.SOLAR_SYSTEM_POS["Jupiter"][2],
"v1": Grav_obj.SOLAR_SYSTEM_VEL["Jupiter"][0],
"v2": Grav_obj.SOLAR_SYSTEM_VEL["Jupiter"][1],
"v3": Grav_obj.SOLAR_SYSTEM_VEL["Jupiter"][2],
"m": Grav_obj.SOLAR_SYSTEM_MASSES["Jupiter"],
"R": 4.6732617e-04,
},
path_jupiter,
)
saturn = Grav_obj(
grav_sim,
{
"r1": Grav_obj.SOLAR_SYSTEM_POS["Saturn"][0],
"r2": Grav_obj.SOLAR_SYSTEM_POS["Saturn"][1],
"r3": Grav_obj.SOLAR_SYSTEM_POS["Saturn"][2],
"v1": Grav_obj.SOLAR_SYSTEM_VEL["Saturn"][0],
"v2": Grav_obj.SOLAR_SYSTEM_VEL["Saturn"][1],
"v3": Grav_obj.SOLAR_SYSTEM_VEL["Saturn"][2],
"m": Grav_obj.SOLAR_SYSTEM_MASSES["Saturn"],
"R": 3.89256877e-04 * (157 / 57), # Img scale for Saturn's ring
},
path_saturn,
)
uranus = Grav_obj(
grav_sim,
{
"r1": Grav_obj.SOLAR_SYSTEM_POS["Uranus"][0],
"r2": Grav_obj.SOLAR_SYSTEM_POS["Uranus"][1],
"r3": Grav_obj.SOLAR_SYSTEM_POS["Uranus"][2],
"v1": Grav_obj.SOLAR_SYSTEM_VEL["Uranus"][0],
"v2": Grav_obj.SOLAR_SYSTEM_VEL["Uranus"][1],
"v3": Grav_obj.SOLAR_SYSTEM_VEL["Uranus"][2],
"m": Grav_obj.SOLAR_SYSTEM_MASSES["Uranus"],
"R": 1.69534499e-04,
},
path_uranus,
)
neptune = Grav_obj(
grav_sim,
{
"r1": Grav_obj.SOLAR_SYSTEM_POS["Neptune"][0],
"r2": Grav_obj.SOLAR_SYSTEM_POS["Neptune"][1],
"r3": Grav_obj.SOLAR_SYSTEM_POS["Neptune"][2],
"v1": Grav_obj.SOLAR_SYSTEM_VEL["Neptune"][0],
"v2": Grav_obj.SOLAR_SYSTEM_VEL["Neptune"][1],
"v3": Grav_obj.SOLAR_SYSTEM_VEL["Neptune"][2],
"m": Grav_obj.SOLAR_SYSTEM_MASSES["Neptune"],
"R": 1.64587904e-04,
},
path_neptune,
)
grav_sim.grav_objs.add(sun)
grav_sim.grav_objs.add(mercury)
grav_sim.grav_objs.add(venus)
grav_sim.grav_objs.add(earth)
grav_sim.grav_objs.add(mars)
grav_sim.grav_objs.add(jupiter)
grav_sim.grav_objs.add(saturn)
grav_sim.grav_objs.add(uranus)
grav_sim.grav_objs.add(neptune)
@staticmethod
def create_figure_8(grav_sim):
"""
Create a figure-8 orbit
Data from the book Moving Planets Around: An Introduction to
N-Body Simulations Applied to Exoplanetary Systems, Ch.7, Page 109
As the data given use G = 1, the mass is converted by m / G, since a = GM/r^2.
"""
# Currently use sun as object. May or may not change later.
main_dir_path = os.path.dirname(__file__)
path_sun = os.path.join(main_dir_path, "assets/images/sun.png")
object_1 = Grav_obj(
grav_sim,
{
"r1": 0.970043,
"r2": -0.24308753,
"r3": 0.0,
"v1": 0.466203685,
"v2": 0.43236573,
"v3": 0.0,
"m": 1.0 / Grav_obj.G,
"R": Grav_obj.SOLAR_RADIUS, # The radius is arbitrary. Here we give it the solar radii as it have 1 solar mass
},
path_sun,
name="Sun",
)
object_2 = Grav_obj(
grav_sim,
{
"r1": -0.970043,
"r2": 0.24308753,
"r3": 0.0,
"v1": 0.466203685,
"v2": 0.43236573,
"v3": 0.0,
"m": 1.0 / Grav_obj.G,
"R": Grav_obj.SOLAR_RADIUS, # The radius is arbitrary. Here we give it the solar radii as it have 1 solar mass
},
path_sun,
name="Sun",
)
object_3 = Grav_obj(
grav_sim,
{
"r1": 0.0,
"r2": 0.0,
"r3": 0.0,
"v1": -0.93240737,
"v2": -0.86473146,
"v3": 0.0,
"m": 1.0 / Grav_obj.G,
"R": Grav_obj.SOLAR_RADIUS, # The radius is arbitrary. Here we give it the solar radii as it have 1 solar mass
},
path_sun,
name="Sun",
)
grav_sim.grav_objs.add(object_1)
grav_sim.grav_objs.add(object_2)
grav_sim.grav_objs.add(object_3)
@staticmethod
def create_pyth_3_body(grav_sim):
"""
Create a Pythagorean three-body orbit
Data from the book Moving Planets Around: An Introduction to
N-Body Simulations Applied to Exoplanetary Systems, Ch.7, Page 109
As the data given use G = 1, the mass is converted by m / G, since a = GM / r^2.
"""
# Currently use sun as object. May or may not change later.
main_dir_path = os.path.dirname(__file__)
path_sun = os.path.join(main_dir_path, "assets/images/sun.png")
object_1 = Grav_obj(
grav_sim,
{
"r1": 1.0,
"r2": 3.0,
"r3": 0.0,
"v1": 0.0,
"v2": 0.0,
"v3": 0.0,
"m": 3.0 / Grav_obj.G,
"R": Grav_obj.SOLAR_RADIUS, # The radius is arbitrary. Here we give it the solar radii as it have 1 solar mass
},
path_sun,
name="Sun",
)
object_2 = Grav_obj(
grav_sim,
{
"r1": -2.0,
"r2": -1.0,
"r3": 0.0,
"v1": 0.0,
"v2": 0.0,
"v3": 0.0,
"m": 4.0 / Grav_obj.G,
"R": Grav_obj.SOLAR_RADIUS, # The radius is arbitrary. Here we give it the solar radii as it have 1 solar mass
},
path_sun,
name="Sun",
)
object_3 = Grav_obj(
grav_sim,
{
"r1": 1.0,
"r2": -1.0,
"r3": 0.0,
"v1": 0.0,
"v2": 0.0,
"v3": 0.0,
"m": 5.0 / Grav_obj.G,
"R": Grav_obj.SOLAR_RADIUS, # The radius is arbitrary. Here we give it the solar radii as it have 1 solar mass
},
path_sun,
name="Sun",
)
grav_sim.grav_objs.add(object_1)
grav_sim.grav_objs.add(object_2)
grav_sim.grav_objs.add(object_3)
class Menu:
"""A class to build the menu"""
def __init__(self, grav_sim):
"""Initialize button attributes."""
self.screen = grav_sim.screen
self.screen_rect = self.screen.get_rect()
self.settings = grav_sim.settings
self.main_menu_active = True
self.menu_active = True
self.main_menu_caption = Text_box(
grav_sim,
72,
0,
0,
msg="Gravity Simulator",
font="Manrope",
center=(
self.screen_rect.centerx,
self.screen_rect.centery - 0.3 * self.settings.screen_height,
),
)
self.resume_button = Text_box(
grav_sim,
48,
0.25,
0.05,
msg="Resume",
text_box_color=(220, 220, 220),
text_color=(0, 0, 0),
center=(
self.screen_rect.centerx,
self.screen_rect.centery - 0.22 * self.settings.screen_height,
),
)
self.void_button = Text_box(
grav_sim,
48,
0.25,
0.05,
msg="Void",
text_box_color=(220, 220, 220),
text_color=(0, 0, 0),
center=(
self.screen_rect.centerx,
self.screen_rect.centery - 0.14 * self.settings.screen_height,
),
)
self.solar_system_button = Text_box(
grav_sim,
48,
0.25,
0.05,
msg="Solar System",
text_box_color=(220, 220, 220),
text_color=(0, 0, 0),
center=(
self.screen_rect.centerx,
self.screen_rect.centery - 0.06 * self.settings.screen_height,
),
)
self.figure_8_button = Text_box(
grav_sim,
48,
0.25,
0.05,
msg="Figure 8 orbit",
text_box_color=(220, 220, 220),
text_color=(0, 0, 0),
center=(
self.screen_rect.centerx,
self.screen_rect.centery - (-0.02) * self.settings.screen_height,
),
)
self.pyth_3_body_button = Text_box(
grav_sim,
48,
0.25,
0.05,
msg="Pythagorean three-body",
text_box_color=(220, 220, 220),
text_color=(0, 0, 0),
center=(
self.screen_rect.centerx,
self.screen_rect.centery - (-0.1) * self.settings.screen_height,
),
)
self.exit_button = Text_box(
grav_sim,
48,
0.25,
0.05,
msg="Exit",
text_box_color=(220, 220, 220),
text_color=(0, 0, 0),
center=(
self.screen_rect.centerx,
self.screen_rect.centery - (-0.18) * self.settings.screen_height,
),
)
self.main_menu_button = Text_box(
grav_sim,
48,
0.25,
0.05,
msg="Main Menu",
text_box_color=(220, 220, 220),
text_color=(0, 0, 0),
center=(
self.screen_rect.centerx,
self.screen_rect.centery - (-0.18) * self.settings.screen_height,
),
)
def draw(self):
"""Draw the menu buttons"""
if self.main_menu_active == True:
self.main_menu_caption.draw()
self.exit_button.draw()
else:
self.resume_button.draw()
self.main_menu_button.draw()
self.void_button.draw()
self.solar_system_button.draw()
self.figure_8_button.draw()
self.pyth_3_body_button.draw()
def check_button(self, grav_sim, mouse_pos):
"""Check if there is any click on the buttons"""
if self.main_menu_active == False:
if self.resume_button.rect.collidepoint(mouse_pos):
self.menu_active = False
if self.main_menu_button.rect.collidepoint(mouse_pos):
grav_sim.grav_objs.empty()
grav_sim.stats.reset(grav_sim)
self.main_menu_active = True
else:
if self.exit_button.rect.collidepoint(mouse_pos):
sys.exit()