128 lines
3.6 KiB
Python
128 lines
3.6 KiB
Python
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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import os, sys, random #,termios, tty, time,
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from math import sin, cos, tan, sqrt
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from time import sleep
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# pi is not defined by default
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pi = 3.1416
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deg2rad = pi / 180
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########################################################################################
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def berechneflugbahn(xmax, ymax, steps, startwinkel, startgeschwindigkeit, xmin=0, ymin=0, starthoehe=0, gravitation=9.81, xstep=1):
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x = 0
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y = x**2
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# in scala the resulting coordinates will be returned
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scala = []
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startwinkel = startwinkel * deg2rad
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# Calculate time of flight, actually not used
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flugdauer = startgeschwindigkeit * sin(startwinkel) / gravitation
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# Calculate maximum height
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hoehe = 0.5 * gravitation * flugdauer**2 + starthoehe
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# calculate length of flight, actually not used
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wurfweite = (
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startgeschwindigkeit
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* cos(startwinkel)
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* (startgeschwindigkeit * sin(startwinkel) + sqrt(startgeschwindigkeit**2 * sin(startwinkel) ** 2 + 2 * gravitation * starthoehe))
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) / gravitation
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first_run = True
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# cowlength is 2, if cow is an UTF8-Icon, otherwise 1
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for x in range(xmin, steps , xstep):#steps - 1
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# the formula, which generates the y position for the corresponding x, shamelessly ripped from some schoolbook and modified.
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y = (-(gravitation / (2 * startgeschwindigkeit**2 * cos(startwinkel) ** 2)) * x**2) + (tan(startwinkel) * x + starthoehe)
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# Ensure, that nothing has to be drawn outside the viewport
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if x >= xmax:
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x = xmax
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if y >= ymax:
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y = ymax
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elif y <= ymin:
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y = ymin
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# Stash away the coordinates into scala, which will be returned
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scala += [x, int((y * 100 + 50) / 100)]
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if y == ymin and not first_run:
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break
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first_run = False
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return scala
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#############################################################################################
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# berechneflugbahn(cow, xmin, xmax, ymin, ymax, startwinkel, startgeschwindigkeit, starthoehe):
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# some useful control
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clear, home, curoff, curon = "'\x1b[2J\x1b[H", "\x1b[H", "\x1b[?25l", "\x1b[?25h"
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g_erde = 9.81 # gravitation examples
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mond = 1.6
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jupiter = 24
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# set position of cursor
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def curpos(x, y):
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print("\033[%d;%dH" % (ymax - y, x), end="", flush=True)
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if __name__ == "__main__":
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# Randomly choose a cow
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cows = "🐵🐒🦍🦧🐕🐯🦝🐩🐅🐴🐎🦄🦌🐗🐂🐃🐄🐪🐫🦙🦒🐹🦘🦡🐧🕊️ 🦅🦆🦉🐍🦎🐊🦜🦚🦩🐲🐉🦕"
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cowlistlength = len(cows)
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cow = cows[random.randint(0, cowlistlength - 1)]
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# Needed: find our screensize. We are in textmode here
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termsize_xy = os.get_terminal_size()
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### I m p o r t a n t p a r a m e t e r s ###
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# X-Resolution of the display
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xmax = termsize_xy[0] - 1
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xsteps = xmax * 2
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ymax = termsize_xy[1]
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ymin = 0
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xmin = 0
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startwinkel = 34
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startgeschwindigkeit = 20
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starthoehe = 0
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schlafzeit = 0.05
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###
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# needed for erasing old position
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xold = xmin
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yold = ymin
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x = xmin
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y = xmin
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# Call the function, which calculates the coordinates)
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ergebnis = berechneflugbahn(xmax, ymax, xsteps, startwinkel, startgeschwindigkeit, starthoehe, gravitation=g_erde, xstep=2)
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print(curoff)
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# here we draw the cow
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for count in range(xmin, len(ergebnis), 2):
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xold, yold = x, y
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x, y = ergebnis[count], ergebnis[count + 1]
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curpos(x, y)
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print(cow, end="")
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sleep(schlafzeit)
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curpos(xold, yold)
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print("☁️ ", end="")
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sleep(2)
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sys.exit(home + curon)
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