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2D Physics engine/calculate.py

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+import math
+import time
+
+def eq1():
+    df = 0
+    di = input('enter di(m):>')
+    v = input('enter v(m/s):>')
+    t = input('enter t(s):>')
+    di = int(di)
+    v = int(v)
+    t = int(t)
+    vt = v * t
+    vt = int(vt)
+    df = di + vt
+    print(df, ' meters')
+
+def eq2():
+    vf = 0
+    a = input('enter a(m/s^2):>')
+    t = input('enter t(s):>')
+    vi = input('enter vi(m/s):>')
+    if a == '9.80':
+        a = 9.80
+    t = int(t)
+    vi = int(vi)
+    at = a * t
+    at = int(at)
+    vf = at + vi
+    print(vf, 'm/s')
+
+def eq3():
+    df = 0
+    di = input('enter di(m):>')
+    vi = input('enter vi(m/s):>')
+    t = input('enter t(s):>')
+    a = input('enter a(m/s^2):>')
+    di = int(di)
+    vi = int(vi)
+    t = int(t)
+    a = int(a)
+    at = a * t
+    vit = vi * t
+    onehalf = 0.5
+    onehalfat = onehalf * at
+    onehalfatsq = onehalfat ** 2
+    df = di + vit + onehalfatsq
+    print(df, 'meters')
+
+def eq4():
+    vf = 0
+    vi = input('enter vi(m/s):>')
+    a = input('enter a(m/s^2):>')
+    deltad = input('enter deltad(m):>')
+    vi = int(vi)
+    a = int(a)
+    deltad = int(deltad)
+    visq = vi ** 2
+    twoa = a * 2
+    twoadeltad = twoa * deltad
+    vf = math.sqrt(visq + twoadeltad)
+    print(vf, 'm/s')

2D Physics engine/main.py

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+import calculate
+import time
+
+def main():
+    print('Physics simulator')
+    print('type your number equation(1-4) or ')
+    print('type ball to simulate a ball drop')
+    inp = input(':>')
+    if inp == '1':
+        calculate.eq1()
+    if inp == '2':
+        calculate.eq2()
+    if inp == '3':
+        calculate.eq3()
+    if inp == '4':
+        calculate.eq4()
+    if inp == 'ball':
+        import simulate
+        simulate.main()
+    else:
+        time.sleep(1)
+        main()
+
+main()

2D Physics engine/simulate.py

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+
+import pygame
+
+pygame.init()
+
+global w, h
+
+w,h = 1024,1024
+screen = pygame.display.set_mode((w,h))
+
+def main(a = 9.8, hdamp = 0.1, damp = 0.05):
+    ball_x = input('enter x:>')
+    ball_y = input('enter y:>')
+    ball_x = int(ball_x)
+    ball_y = int(ball_y)
+    ball_x_v = input('enter horizontal velocity(m/s):>')
+    ball_y_v = input('enter vertical velocity(m/s):>')
+    ball_y = int(ball_y)
+    ball_x_v = int(ball_x_v)
+    ball_y_v = int(ball_y_v)
+    w,h = 1280,1280
+    screen = pygame.display.set_mode((w,h))
+
+    while True:
+
+        screen.fill((0,0,0))
+
+        ball_y_v += (a / 125)
+
+        ball_x += ball_x_v
+        ball_y += ball_y_v
+
+        if ball_x <= 0:
+
+                ball_x_v = -ball_x_v*(1-damp)
+                ball_x = 1
+
+        if ball_y <= 0:
+
+            ball_y_v = -ball_y_v*(1-damp)
+
+            ball_x_v = ball_x_v*(1-hdamp)
+
+            ball_y = 1
+
+        if ball_x >= w:
+
+            ball_x_v = -ball_x_v*(1-damp)
+
+            ball_x = w - 1 
+
+        if ball_y >=h:
+
+            ball_y_v = -ball_y_v*(1-damp)
+
+            ball_y = h - 1
+
+
+        pygame.draw.circle(screen, (255,255,255), (int(ball_x), int(ball_y)), 5)
+
+        pygame.display.update()
+
+if __name__ == '__main__':
+
+    main()