extends KinematicBody

signal equip( p_slot, p_item )
signal unequip( p_slot )

var character = null

var rotation_speed_factor = 0.01
var move_speed = 2.5
var run_speed = 5.0
var max_speed = 12.0

export var gravity = -9.0

var velocity: = Vector3.ZERO
var is_running = false
var can_turn = false

var ground_contacts = 0

var is_jump_started = false
var is_jumping = false
var jump_strength = 250.0
var is_falling = false
var is_on_ground = true

var is_readying_weapon = false
var is_weapon_ready = false
var can_attack = true

var is_dying = false
var is_dead = false

var direction = Vector3.ZERO
var orientation = 0.0

enum PLAYER_RELATION {
	neutre,
	friend,
	ennemy    
}
export( PLAYER_RELATION ) var player_relation = PLAYER_RELATION.neutre

export( String ) var creature_filename = null setget set_creature_filename
func set_creature_filename( p_filename ):
	creature_filename = p_filename
	self.load_from_name( p_filename )


func _process( delta ):

	# Calculate a move direction vector relative to the camera
	# The basis stores the (right, up, -forwards) vectors of our camera.
	var forwards: Vector3 = $look_at.global_transform.basis.z * direction.z
	var right: Vector3 = $look_at.global_transform.basis.x * direction.x
	if forwards:
		right = Vector3.ZERO
	var move_direction: = forwards + right
	if move_direction.length() > 1.0:
		move_direction = move_direction.normalized()
	move_direction.y = 0
	
	# Rotation.
	if (self.has_node( "creature" ) and $creature.can_turn()) or self.is_readying_weapon or self.is_weapon_ready:
		self.rotate_y( rotation_speed_factor * orientation )

	# Movement.
	velocity = self.calculate_velocity(velocity, move_direction, delta)
	if not self.is_readying_weapon and not self.is_weapon_ready:
		if not self.is_jumping and not self.is_jump_started and not self.is_falling:
			velocity = self.move_and_slide_with_snap(velocity, Vector3.DOWN, Vector3.UP, true)
		else:
			velocity = self.move_and_slide(velocity, Vector3.UP, true)
	# Animation.
	if self.has_node( "creature" ):
		if self.is_dead:
			$creature.play( "dead_loop" )
		elif self.is_dying:    
			$creature.play( "dying", 2.0 )
		elif self.is_readying_weapon:
			$creature.play( "1h_pistol_ready_start" )
		elif self.is_weapon_ready:
			$creature.play( "1h_pistol_ready_loop" )
		elif direction and not self.is_jump_started and not self.is_jumping and not self.is_falling:
			if direction.z < 0.0:
				if self.is_running:
					$creature.play( "run" , 2.0 )
				else:
					$creature.play( "walk" )
			elif direction.z > 0.0:
				if self.is_running:
					$creature.play_backwards( "run", 2.0 )
				else:
					$creature.play_backwards( "walk" )
			elif direction.x > 0.0:
				$creature.play( "strafe_right" )
			elif direction.x < 0.0:
				$creature.play( "strafe_left" )
		elif self.is_jump_started and not self.is_jumping:
			$creature.play( "jump_start" )
		elif self.is_jumping or self.is_falling:
			if not self.is_on_ground:
				$creature.play( "jump_loop" )
			else:
				$creature.play( "jump_end", 2 )
		elif not self.orientation == 0.0:
			if self.orientation < 0.0:
				$creature.play( "turn_right", 2.0 )
			elif self.orientation > 0.0:
				$creature.play( "turn_left", 2.0 )
		else:
			$creature.play( "idle" )
		
	  
func calculate_velocity(
		velocity_current: Vector3,
		move_direction: Vector3,
		delta: float
	) -> Vector3:
		
#        var velocity_new := move_direction
		var velocity_new = Vector3.ZERO
		if not self.is_jump_started:
			velocity_new = move_direction
		
		if self.is_running:
			velocity_new *= run_speed
		else:
			velocity_new *= move_speed
		if velocity_new.length() > max_speed:
			velocity_new = velocity_new.normalized() * max_speed
		velocity_new.y = velocity_current.y + gravity * delta
		if self.is_jumping:
			velocity_new.y += self.jump_strength * delta
			self.is_jumping = false
			self.is_falling = true
		if self.is_falling:
			velocity_new.x *= 2.0
			velocity_new.z *= 2.0
			
			
		return velocity_new
		
func load_from_name( p_name, p_emplacement = null ):
	var creature = Datas.Creature.new()
	creature.set_data( "name", p_name )
	creature.load( null, p_emplacement )
	if creature.get_data( "race" ) == Globals.RACE.human:
		if creature.get_data( "sex" ) == Globals.SEX.female:
			self.change_creature( "res://scenes/creatures/human/human_female.tscn" )
		elif creature.get_data( "sex" ) == Globals.SEX.male:
			self.change_creature( "res://scenes/creatures/human/human_male.tscn" )
	if $creature:
		$creature.load_from_name( p_name, p_emplacement )
		
func change_creature( new_model_path ):
	if $creature:
		var old_model = $creature
		self.remove_child( old_model )
		old_model.queue_free()
	var new_model = load( new_model_path )
	if new_model:
		new_model = new_model.instance()
		new_model.name = "creature"
		self.add_child( new_model )
		new_model.connect( "animation_finished", self, "_on_creature_animation_finished" )
		new_model.duplicate_meshes()
func set_blend_shape( p_blend_shape_name, p_value ):
	$creature.set_blend_shape( p_blend_shape_name, p_value )
	 

func _on_ground_area_body_entered(body):
	if not body == self:
		self.ground_contacts += 1
	if self.ground_contacts > 0:
#        self.is_falling = false
		self.is_on_ground = true


func _on_ground_area_body_exited(body):
	if not body == self:
		self.ground_contacts -= 1
	if self.ground_contacts <= 0:
		self.is_falling = true
		self.is_on_ground = false


func _on_creature_animation_finished(anim_name):
	if anim_name == "jump_start":
		self.is_jump_started = false
		self.is_jumping = true
	elif anim_name == "jump_end":
		self.is_falling = false
	elif anim_name == "turn_right":
		self.can_turn = false
	elif anim_name == "turn_left":
		self.can_turn = false
	elif anim_name == "1h_pistol_ready_start":
		self.is_readying_weapon = false
		self.is_weapon_ready = true
	elif anim_name == "dying":
		self.is_dying = false
		self.is_dead = true

func set_focus( p_focus = true ):
	if p_focus:
		$focus.show()
		if self.player_relation == PLAYER_RELATION.neutre:
			$focus.get_surface_material( 0 ).albedo_color = Color.white
		elif self.player_relation == PLAYER_RELATION.friend:
			$focus.get_surface_material( 0 ).albedo_color = Color.green
		elif self.player_relation == PLAYER_RELATION.ennemy:
			$focus.get_surface_material( 0 ).albedo_color = Color.red
	else:
		$focus.hide()

func get_weapons():
	var weapons = []
	if Datas.Equipment.SLOT.weapon_hands in $creature.slots:
		if $creature.slots[ Datas.Equipment.SLOT.weapon_hands ].item:
			weapons.push_back( $creature.slots[ Datas.Equipment.SLOT.weapon_hands ].item )

	if not weapons.size() > 0:
		if Datas.Equipment.SLOT.weapon_hand_right in $creature.slots:
			if $creature.slots[ Datas.Equipment.SLOT.weapon_hand_right ].item:
				weapons.push_back( $creature.slots[ Datas.Equipment.SLOT.weapon_hand_right ].item )
		if Datas.Equipment.SLOT.weapon_hand_left in $creature.slots:
			if $creature.slots[ Datas.Equipment.SLOT.weapon_hand_left ].item:
				weapons.push_back( $creature.slots[ Datas.Equipment.SLOT.weapon_hand_left ].item )
	return weapons
	
func get_main_weapon_node():
	var weapon = null
	if Datas.Equipment.SLOT.weapon_hands in $creature.slots:
		if $creature.slots[ Datas.Equipment.SLOT.weapon_hands ].item:
			if $creature/body_parts/body/skeleton/attachment_hand_R/handle.get_children().size() > 0:
				weapon = $creature/body_parts/body/skeleton/attachment_hand_R/handle.get_children()[0]
	if not weapon and Datas.Equipment.SLOT.weapon_hand_right in $creature.slots:
		if $creature.slots[ Datas.Equipment.SLOT.weapon_hand_right ].item:
			if $creature/body_parts/body/skeleton/attachment_hand_R/handle.get_children().size() > 0:
				weapon = $creature/body_parts/body/skeleton/attachment_hand_R/handle.get_children()[0] 
	if not weapon and Datas.Equipment.SLOT.weapon_hand_left in $creature.slots:
		if $creature.slots[ Datas.Equipment.SLOT.weapon_hand_left ].item:
			if $creature/body_parts/body/skeleton/attachment_hand_L/handle.get_children().size() > 0: 
				weapon = $creature/body_parts/body/skeleton/attachment_hand_R/handle.get_children()[0]
	return weapon
	
func attack():
	if self.can_attack:
		var weapon = null
		var attachment = null
		weapon = $creature.slots[ Datas.Equipment.SLOT.weapon_hand_right ].item
		attachment = $creature.slots[ Datas.Equipment.SLOT.weapon_hand_right ].attachment
		if not weapon:
			weapon = $creature.slots[ Datas.Equipment.SLOT.weapon_hand_left ].item
			attachment = $creature.slots[ Datas.Equipment.SLOT.weapon_hand_left ].attachment
		if not weapon:
			weapon = $creature.slots[ Datas.Equipment.SLOT.weapon_hands ].item
			attachment = $creature.slots[ Datas.Equipment.SLOT.weapon_hands ].attachment
			
		if weapon:
			print( "pan " + str(weapon.get_data( "damage" )) )

			var weapon_node = $creature/body_parts/body/skeleton.get_node( attachment )
			if weapon_node:
				weapon_node = weapon_node.get_node( "handle" ).get_children()[0]
#            if weapon_node is preload( "res://scenes/items/equipments/weapons/firearm.gd" ):
#                weapon_node.fire( self, [self] )
#
			self.can_attack = false
			$attack_delay.start()
		
func hit( p_damage, p_from = null ):
	$creature.creature.set_data( "current_life", $creature.creature.get_data( "current_life" )-p_damage )
	$head_infos_viewport/head_infos/bars/life.max_value = $creature.creature.get_max_life()
	$head_infos_viewport/head_infos/bars/life.value = $creature.creature.get_data( "current_life", 0 )
		
func die():
	self.is_dying = true
		
func _on_creature_equip(p_slot, p_item):
	var weapons = self.get_weapons()
	if weapons.size() > 0:
		var max_delay = null
		for weapon in weapons:
			if not max_delay:
				max_delay = weapon.get_data( "attack_delay" )
			else:
				max_delay = max( max_delay, weapon.get_data( "attack_delay" ) )
		$attack_delay.wait_time = max_delay
	emit_signal( "equip", p_slot, p_item )

func _on_creature_unequip(p_slot):
	emit_signal( "unequip", p_slot )


func _on_attack_delay_timeout():
	self.can_attack = true


func _on_creature_is_dead():
	self.die()