Double jump system with jump counter for character

Pattern: Variables JumpCount(int)=0, MaxJumps(int)=2. Jump input → Branch(JumpCount < MaxJumps) → True: LaunchCharacter(0,0,JumpZVelocity) → SET JumpCount+1. OnLanded event → SET JumpCount=0. Don't use built-in Jump for multi-jump — use LaunchCharacter instead.