player.gd

extends KinematicBody2D

const GRAVITY = 20
const SPEED = 300
const JUMP_HEIGHT = -600
const FLOOR_NORMAL = Vector2(0, -1)

var velocity = Vector2()

func _physics_process(delta):
    velocity.y += GRAVITY

    velocity.x = 0
    if Input.is_action_pressed('ui_left'):
        velocity.x = -SPEED
    elif Input.is_action_pressed('ui_right'):
        velocity.x = SPEED

    if Input.is_action_just_pressed('ui_cancel'):
        position = Vector2(512, 80)
        velocity = Vector2()

    if is_on_floor():
        velocity.y += GRAVITY * 10

    if is_on_floor() and Input.is_action_just_pressed('ui_select'):
        velocity.y = JUMP_HEIGHT

    velocity = move_and_slide(velocity, FLOOR_NORMAL, 25)