Player/Main Script

extends CharacterBody3D

@onready var camera = $Cam/Camera
@onready var cam = $Cam

const MOUSE_SENSITIVITY = 0.25
const GRAVITY = -20.0
const JUMP_SPEED = 4.5
const SPEED = 6
const ACCEL = 12.0
const AIR_ACCEL = 1.5

var vel = Vector3.ZERO
var currentvel = Vector3.ZERO
var dir = Vector3.ZERO

func _ready():
    Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)

func _physics_process(delta):
    dir = Vector3.ZERO
    if Input.is_action_pressed("Forward"):
        dir -= camera.global_transform.basis.z
    if Input.is_action_pressed("Back"):
        dir += camera.global_transform.basis.z
    if Input.is_action_pressed("Left"):
        dir -= camera.global_transform.basis.x
    if Input.is_action_pressed("Right"):
        dir += camera.global_transform.basis.x

    dir = dir.normalized()

    var target_vel = dir * SPEED
    var accel = ACCEL if is_on_floor() else AIR_ACCEL

    currentvel = currentvel.lerp(target_vel, accel * delta)

    vel.x = currentvel.x
    vel.z = currentvel.z

    set_velocity(vel)
    set_up_direction(Vector3.UP)
    set_floor_stop_on_slope_enabled(true)
    set_max_slides(4)
    set_floor_max_angle(deg_to_rad(45))
    move_and_slide()
    vel = velocity

    vel.y += GRAVITY * delta
    if Input.is_action_just_pressed("Jump") and is_on_floor():
        vel.y = JUMP_SPEED

func _input(event):
    if event is InputEventMouseMotion:
        cam.rotate_x(deg_to_rad(event.relative.y * MOUSE_SENSITIVITY * 1))
        cam.rotation_degrees.x = clamp(cam.rotation_degrees.x, -40, 35)
        self.rotate_y(deg_to_rad(event.relative.x * MOUSE_SENSITIVITY * -1))