Making jetpack joyride's jetpack physics

[Bob_Knob]

Godot Version

4.3

Question

im making a jetpack joyride clone game and im working on the jetpack rn im trying to make the physics more like jetpack joyride since my current ones dont carry momentum as soon as you stop using jetpack it just falls at max speed which isnt as fun so I took this

velocity += get_gravity() * delta

and made turned it into this

if Input.is_action_just_pressed("ui_accept"):
		velocity.y = JUMP_VELOCITY
	if Input.is_action_just_released("ui_accept"):
		velocity += get_gravity() * delta

but it never falls and just keeps going up with jump key released this is my full code can anyone help?`

extends CharacterBody2D

const SPEED = 300
const JUMP_VELOCITY = -400.0
const gravity = 500
var direction = 1
#469 from players position
func _physics_process(delta: float) -> void:
	Global.player_position = global_position
		
	
	if !is_on_floor():
		$"Character Sprite".play("Flying")
	else:
		$"Character Sprite".play("idle")
	
	# Handle jump.
	if Input.is_action_just_pressed("ui_accept"):
		velocity.y = JUMP_VELOCITY
	if Input.is_action_just_released("ui_accept"):
		velocity += get_gravity() * delta
	# Get the input direction and handle the movement/deceleration.
	# As good practice, you should replace UI actions with custom gameplay actions.
	if direction:
		velocity.x = direction * SPEED
	else:
		velocity.x = move_toward(velocity.x, 0, SPEED)

	move_and_slide()

[paintsimmon]

You have is_action_just_released which means it only runs for the one frame after you release the key. You should replace it with else: so it runs when the player hasn’t just pressed the key.

[Bob_Knob]

now you cant hold it and it treats it like a normal jump

[Bob_Knob]

I added the else and changed

 input.is_action_just_pressed

to

input.is_action_pressed