extends CharacterBody2D

const WALK_ACCEL = 50.0
const WALK_TOPSPEED = 160.0

const FLY_ACCEL = 50.0
const FLY_TOPSPEED = 200.0

const GRAVITY = 15.0
const FAST_FALL_VELOCITY = 500.0

var downward_velocity = 0.0
var max_downward_velocity = 1200.0
var fast_fall_max_downward_velocity = 1500.0

var fuel = 100.0
const jetpack_velocity = 10.0

var score = 0

var aim_direction = 1

const BULLET = preload("res://weapons/spreadshot/spread_shot.tscn")
const GRAZE_PARTICLES = preload("res://sprites/Player/graze_particles.tscn")

func _physics_process(delta: float) -> void:
	var axis = Input.get_axis("ui_left","ui_right")
	if axis != 0: aim_direction = axis
	#region ground movement
	if axis != 0:
		if velocity.y < 0:
			move(FLY_ACCEL,FLY_TOPSPEED)
		else:
			move(WALK_ACCEL,WALK_TOPSPEED)
		if is_on_floor():
			%Sprite.play("walk")
		else:
			%Sprite.play("fly")
	else:
		velocity.x = move_toward(velocity.x, 0, WALK_ACCEL)
		%Sprite.play("idle")
	#endregion
		#region gun
	if Input.is_action_just_pressed("shoot"):
		%ShootSound.play()
		var bullet = BULLET.instantiate()
		bullet.global_position = global_position
		get_parent().add_child(bullet)
	#endregion
	#region jetpack flight
	if Input.is_action_pressed("fly"):
		if fuel > 0.0:
			%Sprite.play("fly")
			fuel -= 40.0 * delta
			downward_velocity = 0.0
			if %JetpackSound.is_playing() == false: %JetpackSound.play()
			if %JetpackSound.pitch_scale < 1.25:
				%JetpackSound.pitch_scale += 0.4 * delta
			velocity.y -= jetpack_velocity
			emit_fire(true)
			
		else:
			emit_fire(false)
	else:
			if %JetpackSound.pitch_scale > 0.4:
				%JetpackSound.pitch_scale -= 0.1 * delta
			emit_fire(false)

	#endregion
	if is_on_floor(): 
		downward_velocity = 0.0
		GlobalFunctions.append_score()
		fuel = 100.0
		silence_jetpack(delta)
	else:
		if Input.is_action_pressed("fast_fall"):
			silence_jetpack(delta)
		else:
			%JetpackSound.volume_db = 0.0
		
		if Input.is_action_pressed("fast_fall"):
			downward_velocity += FAST_FALL_VELOCITY
			downward_velocity = clamp(downward_velocity,0.0,fast_fall_max_downward_velocity)
			velocity.y = clamp(velocity.y,velocity.y,fast_fall_max_downward_velocity)
		else:
			downward_velocity += GRAVITY
			downward_velocity = clamp(downward_velocity,0.0,max_downward_velocity)
			velocity.y = clamp(velocity.y,velocity.y,max_downward_velocity)
			fuel -= 1 * delta
		
		
		
		#jetpack pitch
		
	velocity.y += downward_velocity * delta
	move_and_slide()
	#if event.is_action_pressed()
#endregion


func move(acceleration,topspeed):
	var axis = Input.get_axis("ui_left","ui_right")
	velocity.x += (axis * acceleration)
	%Sprite.scale.x = axis
	velocity.x = clamp(velocity.x,-topspeed,topspeed)

func silence_jetpack(delta):
	%JetpackSound.pitch_scale = 1.0
	%JetpackSound.volume_db -= 50 * delta

func emit_fire(emit:bool=true,lifetime:float=0.24):
		get_tree().get_nodes_in_group("fire_particles")[0].emitting = emit
		get_tree().get_nodes_in_group("fire_particles")[0].lifetime = lifetime
		get_tree().get_nodes_in_group("fire_particles")[1].emitting = emit
		get_tree().get_nodes_in_group("fire_particles")[1].lifetime = lifetime

func _on_area_2d_body_entered(body: Node2D) -> void:
	if body.is_in_group("death"):
		get_tree().reload_current_scene()


func _on_area_2d_area_entered(area: Area2D) -> void:
	#if area.is_in_group("death") or area.is_in_group("hurt"):
		#get_tree().reload_current_scene()
	pass


func _on_hurtbox_area_entered(area: Area2D) -> void:
	get_tree().reload_current_scene()


func _on_graze_hitbox_area_entered(area: Area2D) -> void:
	if area.is_in_group("enemy_bullet"):
		if area.get_parent().grazed == false:
			GlobalFunctions.queue_score(0)
			var graze_particle = GRAZE_PARTICLES.instantiate()
			graze_particle.global_position = global_position
			get_parent().add_child(graze_particle)
			area.get_parent().grazed = true