extends RigidBody2D

export var max_distance = 64
export var max_tangential_accel = 32
export var max_travel_time = 2.0
export var push_force = 128
export var collision_minor_speed_threshold = 8
export var collision_major_speed_threshold = 32
export var collision_timedt_threshold = 0.1


var body_radius = 0
var mouse_position = Vector2.ZERO
var mouse_down = false
var push = false
var traveling = 0;

var in_air = true
var air_time = 0
var last_speed = 0


# Called when the node enters the scene tree for the first time.
func _ready():
	set_process(true)
	set_physics_process(true)
	set_process_input(true)
	body_radius = $CollisionShape2D.shape.radius
	$Particles.process_material.color = $Sprite.material.get_shader_param("rim_color");


func _input(event):
	if event is InputEventMouseMotion:
		mouse_position = get_global_mouse_position()
	if Input.is_action_just_pressed("ButtonA"):
		mouse_down = true
	elif Input.is_action_just_released("ButtonA"):
		mouse_down = false
		push = true


func _physics_process(delta):
	if mouse_down:
		return # We don't follow the mouse or move the squiq when mouse is down.
		
	if push:
		push = false
		traveling = max_travel_time
		var v_direction = (position - mouse_position).normalized()
		apply_central_impulse(v_direction * abs(v_direction.length()) * push_force)
	elif in_air:
		air_time += delta
	else:
		var distance = clamp(mouse_position.x - position.x, -max_distance, max_distance)
		var dpercent = distance / max_distance
		if abs(distance) > body_radius:
			var v_horizontal = Physics2DServer.area_get_param(get_world_2d().get_space(), Physics2DServer.AREA_PARAM_GRAVITY_VECTOR).rotated(deg2rad(-90))
			$Particles.process_material.tangential_accel = dpercent * max_tangential_accel;
			apply_central_impulse(v_horizontal * distance * delta)
		else:
			$Particles.process_material.tangential_accel = 0
	
	last_speed = linear_velocity.length()
	#print(last_speed)
	


func _process(delta):
	update()

func _draw():
	if mouse_down:
		var distance = min(position.distance_to(mouse_position), max_distance)
		var v_direction = (position - mouse_position).normalized().rotated(-rotation)
		var v_start = v_direction * body_radius
		var v_end = v_direction * distance
		var v_tipA = v_end - (v_direction.rotated(deg2rad(30)) * min(distance, 16))
		var v_tipB = v_end - (v_direction.rotated(-deg2rad(30)) * min(distance, 16))
		var c_line = Color(0.25, 1.0, 0.0)
		draw_line(v_start, v_end, c_line)
		draw_line(v_end, v_tipA, c_line)
		draw_line(v_end, v_tipB, c_line)



func _on_Player_body_entered(body):
	in_air = false
	#print(linear_velocity)
	if air_time > collision_timedt_threshold:
		var lvlen = linear_velocity.length()
		if lvlen >= collision_minor_speed_threshold and lvlen < collision_major_speed_threshold:
			print("ooOF")
		elif lvlen >= collision_major_speed_threshold:
			print("Oooooch!")
	air_time = 0


func _on_Player_body_exited(body):
	in_air = true
	print("I'm flying!")