extends KinematicBody2D

class_name Player

export(float) var WALK_ANIM_MULTIPLIER: float = 0.02
export(float) var WALK_SPEED: float = 300
export(float) var WALK_SPEED_LERP_W: float = 0.2
export(float) var JUMP_FORCE: float = 100
export(float) var COYOTE_TIME: float = 250
export(float) var JUMP_BUFFER: float = 220

var velocity = Vector2.ZERO
var coyote_timer: float = INF
var jump_buffer: float = INF

# Called when the node enters the scene tree for the first time.
func _ready():
	pass
	#$AnimationTree.set("parameters/walk_speed/scale", 0)

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(_delta):
	pass
	#print($AnimationPlayer.current_animation)

func _physics_process(delta):
	velocity.y += delta * GlobalData.GRAVITY
	jump_buffer += delta * 1000

	if Input.is_action_pressed("move_left"):
		velocity.x = lerp(velocity.x, -WALK_SPEED, WALK_SPEED_LERP_W)
		$Sprite.set_flip_h(false)
		$AnimationTree.set("parameters/is_moving/current", true)
	elif Input.is_action_pressed("move_right"):
		velocity.x = lerp(velocity.x, WALK_SPEED, WALK_SPEED_LERP_W)
		$Sprite.set_flip_h(true)
		$AnimationTree.set("parameters/is_moving/current", true)
	else:
		velocity.x = 0
		$AnimationTree.set("parameters/is_moving/current", false)
	
	if $FloorRaycastL.is_colliding() || $FloorRaycastR.is_colliding():
		$AnimationTree.set("parameters/is_grounded/current", true)
	else:
		$AnimationTree.set("parameters/is_grounded/current", false)
		
	if is_on_floor():
		coyote_timer = 0
		velocity.y = 0
	else:
		coyote_timer += delta * 1000
		
	if Input.is_action_just_pressed("jump"):
		jump_buffer = 0
			
	if coyote_timer < COYOTE_TIME && jump_buffer < JUMP_BUFFER:
		velocity.y = -JUMP_FORCE
		coyote_timer = INF
		jump_buffer = INF
		
	if is_on_ceiling():
		velocity.y = 1 # Just a bit downwards to not get stuck

	velocity.y = clamp(velocity.y, -INF, GlobalData.MAX_FALL_SPEED)

	# TODO fix walking down ramps with snap
	# snap needs to be ZERO when jumping

	# print($AnimationPlayer.current_animation, ", ", $AnimationTree.get("parameters/walk_speed/scale"))
	# warning-ignore:return_value_discarded
	move_and_slide(velocity, Vector2.UP)