#display health information
player1.display_health_bar(screen)
player2.display_health_bar(screen)
#move obstacle
obstacle1.obstacleMove()
obstacle2.obstacleMove()
obstacle3.obstacleMove()
#check obstacle bounds
obstacle1.obstacleInBound()
obstacle2.obstacleInBound()
obstacle3.obstacleInBound()
#check if player got hit by an obstacle
obstacle1.obstacleOnHit(player1)
obstacle1.obstacleOnHit(player2)
obstacle2.obstacleOnHit(player1)
obstacle2.obstacleOnHit(player2)
obstacle3.obstacleOnHit(player1)
obstacle3.obstacleOnHit(player2)
#display obstacles
obstacle1.obstacleScreenPosition(screen)
obstacle2.obstacleScreenPosition(screen)
obstacle3.obstacleScreenPosition(screen)
#display map
gameMap.setGround(screen)
if ((player1.max_hp <= 0 or player2.max_hp <= 0)
