if y < 0 {
vspeed = abs(vspeed)
}
if y > room_height {
vspeed = -abs(vspeed)
}
if x < 0 {
hspeed = abs(hspeed)
}
if x > room_width {
hspeed = -abs(hspeed)
}
if y < 0 {
vspeed = abs(vspeed)
}
if y > room_height {
vspeed = -abs(vspeed)
}
if x < 0 {
hspeed = abs(hspeed)
}
if x > room_width {
hspeed = -abs(hspeed)
}
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