partial one

cb.en.u4cse16249_wallAndBall.py

+from vpython import *
+#GlowScript 2.7 VPython
+ball = sphere(pos=vector(-5,0,0),radius=1,color=color.red,make_trail=True)
+wall = box(pos=vector(6,0,0),size=vector(0.2,12,12),color=color.green)
+wallL= box(pos=vector(-6,0,0),size=vector(0.2,12,12),color=color.green)
+wall1 =box(pos=vector(0,6,0),size=vector(-12,0,12),color=color.green)
+wall2 =box(pos=vector(0,-6,0),size=vector(-12,0,12),color=color.green)
+vscale=0.1
+ball.velocity=vector(25,3,0)
+varr=arrow(pos=ball.pos,axis=vscale*ball.velocity,color=color.yellow)
+delta=0.005
+t=0
+while(t>=0):
+    rate(100)
+    if(ball.pos.y>wall1.pos.y):
+        ball.color=color.white
+        ball.velocity.x=-ball.velocity.x
+        ball.velocity.y=-ball.velocity.y
+        varr.axis=ball.velocity*vscale
+        ball.pos=ball.pos+(ball.velocity*(delta))
+        varr.pos=varr.pos+(ball.velocity*(delta))
+        t=t+delta
+    if(ball.pos.x==wall.pos.x):
+        ball.velocity.x=-ball.velocity.x
+        varr.axis=ball.velocity*vscale
+        ball.pos=ball.pos+(ball.velocity*(delta))
+        varr.pos=varr.pos+(ball.velocity*(delta))
+        t=t+delta
+    else if(ball.pos.x==wallL.pos.x):
+        ball.velocity.x=-ball.velocity.x
+        varr.axis=ball.velocity*vscale
+        ball.pos=ball.pos+(ball.velocity*(delta))
+        varr.pos=varr.pos+(ball.velocity*(delta))
+        t=t+delta
+    else:
+        ball.pos=ball.pos+ball.velocity*delta
+        varr.pos=varr.pos+(ball.velocity*(delta))
+        t=t+delta
+