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When it should play like this:
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(The order of the frames are: 1, 2, 3, 2, and repeat, in "ping-pong"/"loop" style)
2. If you unpress and press "alt-jump" while falling, when you touch the ground you automatically gain a boost:
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The game should check that you unpressed and pressed "alt-jump" key only while being on the floor.
3. If you performed a spin-jumped and climbed, swam or warped before touching the floor, the frame speed of the propeller will keep the same:
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The framespeed should be switched back to normal if the player is doing anything else than falling with a spin-jump.
4. Following the steps of the previous item, if you hold "down" while swimming the player X speed will be limited a lot:
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