Cumulo-Climb

• Combo rules that only reward the weak point

Landing on a fresh cloud adds flat points; only a landing on the cloud's weak point calls RegisterBoost, which bumps the combo and scores points times combo. The first version awarded combo on every landing and the score inflated on its own, so the two breaking cases are explicit: the player remembers the last cloud he stood on and jumping off it again calls LoseCombo, and so does a jump that misses the weak point. The combo timer only ticks while grounded, so time in the air never costs a combo, only hesitation on a cloud does.

• Animation tree and pickups

The animator reads a moving flag derived from horizontal velocity or being airborne, and rising versus falling from the sign of vertical velocity, so the sprite cannot drift from what the body is doing; the earlier version fired animations at the call site and did. Boots and wings swap the sprite set through one SetBoots call. A stun disables the Animator outright and shows a left or right stunned sprite by facing, because a state tree cannot be trusted not to override a one-off pose. The boost afterimage is a coroutine that spawns fading ghost sprites at an interval for a set duration.