I was working on a simple one-point perspective 3D-Engine in PyCharm which uses Turtle to render images. The code simply just renders three (badly-made) stars floating around and changing colours. I've also worked on the site repl.it tons of hours before, and thought that I would "upload" my code there so that I could continue working on it online from other places when I got time. But it seems as if there were a difference between the two compilers in PyCharm and Repl.it: The exact same code that works fine in PyCharm just spits out a Compiler Error in Repl.it. The exact error is ParseError: bad input on line 59 which is really annoying. Here below is the code. I don't expect anyone to read all the code, but rather just take a quick look at that specific line to see if it's just me being a moron. Just a heads up, it's very long!
import turtle
import time
import math
turtle.getscreen()
turtle.colormode(255)
turtle.bgcolor(0, 0, 0)
turtle.pensize(7)
turtle.speed(99)
def draw_line(start_x, start_y, start_z, end_x, end_y, end_z, shift_x, shift_y, shift_z):
fov = 10
turtle.penup()
print("Drawing Line -- First pos: " + str(fov*((start_x+shift_x)/(start_z+shift_z))) + ", Second pos: " + str(fov*((start_y+shift_y)/(start_z+shift_z))))
turtle.goto(fov*((start_x+shift_x)/(start_z+shift_z)), fov*((start_y+shift_y)/(start_z+shift_z)))
turtle.pendown()
turtle.goto(fov*((end_x+shift_x)/(end_z+shift_z)), fov*((end_y+shift_y)/(end_z+shift_z)))
turtle.penup()
def draw_star(pos_x, pos_y, pos_z):
turtle.tracer(0, 0)
draw_line(-10, -10, 1, 0, 10, 1, pos_x, pos_y, pos_z)
draw_line(0, 10, 1, 10, -10, 1, pos_x, pos_y, pos_z)
draw_line(10, -10, 1, -10, 3, 1, pos_x, pos_y, pos_z)
draw_line(-10, 3, 1, 10, 3, 1, pos_x, pos_y, pos_z)
draw_line(10, 3, 1, -10, -10, 1, pos_x, pos_y, pos_z)
draw_line(-10, -10, 1.1, 0, 10, 1.1, pos_x, pos_y, pos_z)
draw_line(0, 10, 1.1, 10, -10, 1.1, pos_x, pos_y, pos_z)
draw_line(10, -10, 1.1, -10, 3, 1.1, pos_x, pos_y, pos_z)
draw_line(-10, 3, 1.1, 10, 3, 1.1, pos_x, pos_y, pos_z)
draw_line(10, 3, 1.1, -10, -10, 1.1, pos_x, pos_y, pos_z)
draw_line(-10, -10, 1, -10, -10, 1.1, pos_x, pos_y, pos_z)
draw_line(0, 10, 1, 0, 10, 1.1, pos_x, pos_y, pos_z)
draw_line(10, -10, 1, 10, -10, 1.1, pos_x, pos_y, pos_z)
draw_line(-10, 3, 1, -10, 3, 1.1, pos_x, pos_y, pos_z)
draw_line(10, 3, 1, 10, 3, 1.1, pos_x, pos_y, pos_z)
print("Finished drawing star at " + str(pos_x) + " " + str(pos_y) + " " + str(pos_z))
turtle.update()
i = 0
i2 = 0
i3 = 0
clr = 0
back = False
while True:
turtle.clear()
valuelist = [math.cos(i/1.2), math.cos(i2/1.2), math.cos(i3/1.2)]
sortedlist = sorted(valuelist)
match (sortedlist.index(valuelist[len(valuelist) - 3])):
case 0:
turtle.pencolor(clr, 255-clr, clr)
turtle.pensize(5-(math.cos(i/1.2)*3))
draw_star(math.cos(i)*10-30, math.sin(i)*10, math.cos(i/1.2)/3)
case 1:
turtle.pencolor(255-clr, clr, clr)
turtle.pensize(5 - (math.cos(i2 / 1.2) * 3))
draw_star(math.cos(i2)*10, math.sin(i2)*10, math.cos(i2/1.2)/3)
case 2:
turtle.pencolor(clr, 255-clr, clr)
turtle.pensize(5 - (math.cos(i3 / 1.2) * 3))
draw_star(math.cos(i3)*10+30, math.sin(i3)*10, math.cos(i3/1.2)/3)
match (sortedlist.index(valuelist[len(valuelist) - 2])):
case 0:
turtle.pencolor(clr, 255 - clr, clr)
turtle.pensize(5 - (math.cos(i / 1.2) * 3))
draw_star(math.cos(i) * 10 - 30, math.sin(i) * 10, math.cos(i / 1.2) / 3)
case 1:
turtle.pencolor(255 - clr, clr, clr)
turtle.pensize(5 - (math.cos(i2 / 1.2) * 3))
draw_star(math.cos(i2) * 10, math.sin(i2) * 10, math.cos(i2 / 1.2) / 3)
case 2:
turtle.pencolor(clr, 255 - clr, clr)
turtle.pensize(5 - (math.cos(i3 / 1.2) * 3))
draw_star(math.cos(i3) * 10 + 30, math.sin(i3) * 10, math.cos(i3 / 1.2) / 3)
match (sortedlist.index(valuelist[len(valuelist) - 1])):
case 0:
turtle.pencolor(clr, 255 - clr, clr)
turtle.pensize(5 - (math.cos(i / 1.2) * 3))
draw_star(math.cos(i) * 10 - 30, math.sin(i) * 10, math.cos(i / 1.2) / 3)
case 1:
turtle.pencolor(255 - clr, clr, clr)
turtle.pensize(5 - (math.cos(i2 / 1.2) * 3))
draw_star(math.cos(i2) * 10, math.sin(i2) * 10, math.cos(i2 / 1.2) / 3)
case 2:
turtle.pencolor(clr, 255 - clr, clr)
turtle.pensize(5 - (math.cos(i3 / 1.2) * 3))
draw_star(math.cos(i3) * 10 + 30, math.sin(i3) * 10, math.cos(i3 / 1.2) / 3)
i = i + 0.2
i2 = i2 - 0.25
i3 = i3 + 0.3
if clr > 245:
back = True
if clr < 15:
back = False
if back:
clr = clr - 15
else:
clr = clr + 15
time.sleep(0.1)
Python's match syntax is new with python version 3.10. If the interpreter you're submitting this to is an earlier version you'll get a SyntaxError on line 59.
Note that version 3.10 just came out 2 months ago. This is still bleeding-edge syntax.