Trajectory Plotter - main.py
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python
a year ago
9.1 kB
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import pygame, sys, data, functions, math
pygame.init()
#CONSTANTS
BACKGROUND = pygame.image.load("Star_Background.jpg")
FPS = 60
WINDOW_WIDTH = 1280
WINDOW_HEIGHT = 800
font1 = pygame.font.Font(None, 32)
font2 = pygame.font.Font("BELL.TTF", 100)
font2.set_underline(True)
font3 = pygame.font.Font("BELL.TTF", 28)
font4 = pygame.font.Font("BELL.TTF", 80)
font4.set_underline(True)
home_page_text1 = font2.render("Trajectory Plotter", True, (255, 255, 255))
home_page_text2 = font1.render("Press any button to continue... ", True,
(255, 255, 255))
info_page_text = font4.render("Welcome to the Trajectory Plotter!", True,
(255, 255, 255))
error_text = font1.render("Error: Invalid Input", True, (255, 0, 0))
paragraph = (
"This program is used to plot Hohmann interplanetary transfers.",
"All planet radii and orbital speeds are relative to real life",
"however, planets have been scalled up by 1000x to make them more",
"visible.", " ",
"Insert the names for the home planet and target planet in their corresponding",
"boxes and hit the plot button to see the trajectory of your space ship!",
"Ensure to spell planet names correctly.", " ",
"Clicking on a planetary body focuses on it for easy tracking.",
"Use the UP and DOWN arrow keys to zoom in and out.",
"Use the LEFT and RIGHT arrow keys to speed up or slow down time.")
#VARIABLES
running = True
home_page = True
plot_page = False
info_page = False
plotted = False
scalar = 1
centre = (640, 400)
focus = data.Sun
time_scalar = 1
error_counter = 0
num_boxes = 4
#Sets up the output window
WINDOW = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
pygame.display.set_caption("Trajectory Plotter")
while running:
#------------------------HOME PAGE------------------------
while home_page:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
#Continues to info page if any button is clicked
if (event.type == pygame.MOUSEBUTTONDOWN) or (event.type
== pygame.KEYDOWN):
info_page = True
home_page = False
WINDOW.blit(BACKGROUND, (0, 0))
WINDOW.blit(home_page_text1,
(640 - (home_page_text1.get_width() / 2), 350))
WINDOW.blit(home_page_text2,
(640 - (home_page_text2.get_width() / 2), 480))
pygame.display.update()
#------------------------INFO PAGE------------------------
while info_page:
data.info_button.active = False
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
#Continues to plot page if any button is clicked
if (event.type == pygame.MOUSEBUTTONDOWN) or (event.type
== pygame.KEYDOWN):
plot_page = True
info_page = False
#Displays info page and its relevent text
WINDOW.blit(BACKGROUND, (0, 0))
WINDOW.blit(info_page_text,
(640 - (info_page_text.get_width() / 2), 100))
for line in paragraph:
info_text = font1.render(line, True, (255, 255, 255))
WINDOW.blit(info_text, (640 - (info_text.get_width() / 2), 300 +
(30 * paragraph.index(line))))
pygame.display.update()
#------------------------PLOT PAGE------------------------
while plot_page:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
elif event.type == pygame.MOUSEBUTTONDOWN: #triggers event if mouse pressed
for obj in data.boxes:
if pygame.Rect(obj.xcoord, obj.ycoord, obj.width,
obj.height).collidepoint(event.pos):
obj.clicked = True
obj.input_text = ""
plotted = False
num_boxes = 4
else:
obj.clicked = False
for obj in data.planets: #checks to see if planet has been clicked on
if (math.sqrt(
(abs(centre[0] + obj.get_planet_position_x(scalar) -
event.pos[0]))**2 +
(abs(centre[1] + obj.get_planet_position_y(scalar) -
event.pos[1]))**2)
<= obj.planet_radius / (scalar * 10000)):
focus = obj
break
else:
pass
elif event.type == pygame.KEYDOWN: #triggers event if key pressed
for obj in data.boxes[0:2]:
if obj.clicked:
if event.key == pygame.K_RETURN: #saves entered value
obj.active = False
elif event.key == pygame.K_BACKSPACE: #deletes last character
obj.input_text = obj.input_text[:-1]
else:
if len(obj.input_text
) < 10: #limits text to 10 characters
obj.input_text += event.unicode #adds character to text
obj.input_text = obj.input_text.replace(
".", "")
obj.input_text = obj.input_text.replace(
" ", "")
obj.input_text = obj.input_text.capitalize()
else:
pass
else:
pass
if event.key == pygame.K_DOWN: #zooms out (a little bit)
scalar *= 1.2
elif event.key == pygame.K_UP: #zooms in (a little bit)
scalar /= 1.2
elif event.key == pygame.K_LEFT: #speeds down time
time_scalar /= 2
elif event.key == pygame.K_RIGHT: #speeds up time
time_scalar *= 2
mouse_position = pygame.mouse.get_pos() #gets mouse position
for obj in data.boxes: #checks if mouse is over box
if pygame.Rect(obj.xcoord, obj.ycoord, obj.width,
obj.height).collidepoint(mouse_position):
if obj.active is False: #changes box colour if mouse is over box
obj.colour = max(obj.colour[0] - 50,
0), max(obj.colour[1] - 50,
0), max(obj.colour[2] - 50, 0)
obj.active = True
else:
if obj.active is True:
obj.colour = max(obj.colour[0] + 50,
0), max(obj.colour[1] + 50,
0), max(obj.colour[2] + 50, 0)
obj.active = False
centre = (640 - focus.get_planet_position_x(scalar), #sets new centre
400 - focus.get_planet_position_y(scalar))
WINDOW.blit(BACKGROUND, (0, 0))
functions.draw_planet(centre, scalar, data.planets, WINDOW)
if data.plot_button.clicked == True: #validates inputs
if data.home_planet_box.input_text in data.planet_names and data.target_planet_box.input_text in data.planet_names and data.target_planet_box.input_text != data.home_planet_box.input_text:
plotted = True
else:
error_counter = 255
plotted = False
data.plot_button.clicked = False
if data.info_button.clicked == True: #shows info page
info_page = True
plot_page = False
data.info_button.clicked = False
if data.end_plot_button.clicked == True: #ends plotting
num_boxes = 4
plotted = False
data.end_plot_button.clicked = False
if error_counter > 0: #displays error message
error_text.set_alpha(error_counter)
WINDOW.blit(error_text, (640 - (error_text.get_width() / 2), 100))
error_counter -= 1
if plotted == True: #plots trajectory
functions.draw_plot(
centre, scalar, data.planet_names[
data.home_planet_box.input_text.capitalize()],
data.planet_names[
data.target_planet_box.input_text.capitalize()], WINDOW)
num_boxes = 5
functions.draw_box(font1, font3, data.boxes, num_boxes, WINDOW)
pygame.display.update()
if plotted == False:
functions.travel_time(data.planets, time_scalar)
pygame.time.Clock().tick(FPS)
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