Jumping, stomping and bouncing

This uses the complete SquashPlayer.cs; jumping needs no extra script or duplicate signal connection.

Jump

IsActionJustPressed("jump") together with IsOnFloor() sets vertical velocity to JumpSpeed = 8. Holding Space does not jump every frame, and a new airborne press does not add velocity. Gravity 24 reduces vertical velocity with physics delta.

Before MoveAndSlide(), falling records downward movement. The collision may already clear vertical velocity afterward, making a test of the new Velocity.Y too late to identify the incoming fall.

Stomp

After movement, code reads GetSlideCollisionCount() and GetSlideCollision(i). A successful stomp needs all of these:

• the character was falling before movement;
• GetNormal().Y > 0.5, a predominantly upward contact normal;
• the collider is a SquashMob;
• TrySquash() returns true.

Comparing object heights alone is insufficient: a nearby lower object does not prove a collision. Ordinary floor contact awards no points because its collider is a StaticBody3D.

Bounce

A successful stomp sets BounceSpeed = 6 and keeps controls active. The method returns immediately so the same physics update cannot declare defeat from the area overlapping a hazard being deleted. Its flag and QueueFree() prevent duplicate score.

Expected result: landing on a cube's top earns one point and bounces the player upward. Side contact without the qualifying normal is not a stomp. See side-contact defeat.