This is a flappy bird game #$--------------------------------------------------------------------$

# An array of $4$ obstacles, each obstacle has $5$ variables:

# topPipe, bottomPipe, isPassedOn, topPipeType, bottomPipeType

# Each top$/$bottom pipe is a Rectangle, it has $4$ single$-$valued variables: x$,$ y$,$ width, height

# isPassedOn: $0$ if the flappy bird has not passed the obstacle, $1$ otherwise

# topPipeType$/$bottomPipeType: $0,1,2($three different types of pipes$)$

Please do task $3-5$