1. Added suicide function.
-When you fall after being hit by an obstacle in some areas, you may have too long flight time.
Therefore, a suicide function has been added so that you can choose a quick death.
Note) The suicide function is conditional when floating in the air, but the condition is also established during Normal jumps.
We tried to impose a number of restrictions, but we decided to leave it to the users' freedom to press the suicide key.
Be careful not to accidentally press them during the game!