extends CharacterBody3D

var impact_player = preload("res://Assets/Effects/ImpactBlood.tscn")

var max_health = 100
var health = max_health:
	set(value):
		if not dead:
			if main.player_list.players.has(self.get_multiplayer_authority()):
				main.player_list.players[self.get_multiplayer_authority()].health = value
				main.push_local_player_info()
	get:
		if not dead:
			return main.player_list.players[self.get_multiplayer_authority()].health
		else:
			return 0

@export var mouse_sensitivity := 0.15

@onready var main = 		get_tree().root.get_node("Main")
@onready var gui = 			main.get_node("GUI")
@onready var settings = 	gui.settings
@onready var hud = 			main.get_node("HUD")
@onready var crosshair = 	hud.get_node("Crosshair")
@onready var vignette = 	hud.get_node("Vignette")

@onready var banner_busy = preload("res://Assets/Effects/Busy.png")
@onready var banner_chat = preload("res://Assets/Effects/Typing.png")

@onready var head = $Head
@onready var camera = $Head/Camera
#@onready var tween = $Head/Camera/Tween

@onready var ground_check = $GroundCheck
#@onready var climb_tween = $ClimbTween # undergoing redesign in Godot 4
#@onready var climb_check = $ClimbCheck
@onready var body = $Body
@onready var mesh = $Mesh

@onready var weapon = $Head/Camera/Hand/Weapon

var gibs_vfx = preload("res://Assets/Effects/Gibs.tscn")
var blood_decal = preload("res://Assets/Decals/Blood/BloodSplash.tscn")

# climb functions - temporarily disabled
#@onready var body_height = body.shape.height
#@onready var body_y = body.position.y
#@onready var mesh_height = mesh.mesh.mid_height
#@onready var mesh_y = mesh.position.y
#@onready var climb_check_y = climb_check.position.y
@onready var ground_check_y = ground_check.position.y

var input_active = false

var base_fov = 90
var view_zoom_target := 1.0
var view_zoom_direction = true
var view_zoom := view_zoom_target :
	set(zoom):
		view_zoom = zoom
		camera.fov = base_fov / zoom
		crosshair.modulate.a = clamp(1 - (zoom - 1), 0, 1)
		vignette.modulate.a = (zoom - 1) / 3

var revenge_pid: int #store PID of the player who killed you recently

# climbing code - disabled for now
#var climb_height := 0.75
#var climb_time := 0.15
#var climb_state := 0.0 :
#	set(factor):
#		#print("climb_state is now ", factor)
#		climb_state = factor
#		body.shape.height = body_height - factor * climb_height
#		body.position.y = body_y + factor * climb_height / 2
#
#		mesh.mesh.mid_height = mesh_height - factor * climb_height
#		mesh.position.y = mesh_y + factor * climb_height / 2
#
#		ground_check.position.y = ground_check_y + factor * climb_height / 2
#		climb_check.position.y = climb_check_y + factor * climb_height / 2

var direction := Vector3.ZERO
var accel := 0
var speed := 0
var medium = "ground"
var accel_type := {
	"ground": 12,
	"air": 1,
	"water": 4
	}
var speed_type := {
	"ground": 10,
	"air": 10,
	"water": 5
	}
var gravity := 28
var jump := 14 * 1

var jetpack_active = false

var jetpack_thrust = 48 # force applied against gravity
var jetpack_tank = 0.5 # maximum fuel (jetpack use time
var jetpack_fuel = jetpack_tank # current fuel (use time) left
var jetpack_recharge = 0.25 # how long to recharge to full
var jetpack_min = 1.0/8
var jetpack_was_active = false

var velocity := Vector3.ZERO
var gravity_vec := Vector3.ZERO

var previously_on_floor := false

var lagging_movement_velocity = Vector3.ZERO

var dead = false#: # used to workaround Godot crash when destroying player_nodes
#	set(value):
#		match value:
#			true: 
#				#input_active = false
#				self.hide()
#				$Body.disabled = true
#				hud.pain = 3
#				crosshair.hide()
#				#$Head/Camera.transform.origin.y
#				#set_physics_process(false)
#			false:
#				#input_active = true
#				self.show()
#				$Body.disabled = false
#				$SpawnSFX.play()
#				$SpawnVFX.emitting = true
#				hud.pain = 0
#				crosshair.show()
#				#$Head/Camera.transform.origin = Vector3(0,0,0)
#				#set_physics_process(true)
#		dead = value
#
var focus_banner_alpha = 0
var focus_banner_inc = 5
var focus_banner_dec = 1
var focus_banner_show = false

var last_viewed_banner = null

func view_banner(show:bool):
	focus_banner_show = show

@rpc(authority, reliable) func focus_banner(show:bool, type:=0 ):
	if show:
		$FocusBanner.show()
	else:
		$FocusBanner.hide()
	
	match type:
		0: $FocusBanner.mesh.surface_get_material(0).set("albedo_texture", banner_busy)
		1: $FocusBanner.mesh.surface_get_material(0).set("albedo_texture", banner_chat)
	

@rpc(authority, unreliable) func update_movement(player_transform, head_rotation, lin_velocity, jetpack):
	global_transform = player_transform
	head.set_rotation(head_rotation)
	jetpack_active = jetpack
	motion_velocity = lin_velocity

#@rpc(any_peer, call_local, reliable) func set_dead(is_dead: bool):
	#print("Recieved RPC call for set_dead ", is_dead)
	
#	if not is_dead:
#		spawn()
	
#	self.dead = is_dead
	
#	if is_multiplayer_authority():
#		print("Rebroadcasting RPC call for set_dead ", dead)
#		rpc(&'set_dead', dead)

@rpc(any_peer, reliable) func damage_feedback(kill=false):
	if is_multiplayer_authority():
		var victim = get_tree().multiplayer.get_remote_sender_id()
		if kill:
			crosshair.kill()

			var pid = get_multiplayer_authority()
			main.player_list.players[pid].score += 1 # we get a point
			main.rpc(&'player_list_update', main.player_list.get(pid).serialize(), pid) # tell everyone
				
			main.check_game_win_condition()
			
			# check for firstblood
			if main.player_list.players[pid].score == 1:
				var firstblood = true
				for i in main.player_list.players.keys():
					if i != pid and main.player_list.players[i].score > 0:
						firstblood = false
				if firstblood:
					main.get_node("Announcer").speak(main.get_node("Announcer").firstblood) # design a proper API
					
			# check for revenge (payback) - don't play if this is a duel, it'd be silly
			if main.player_list.players.size() > 2 and victim == revenge_pid:
				main.get_node("Announcer").speak(main.get_node("Announcer").payback)
				revenge_pid = -1 # reset revenge
		else:
			crosshair.hit()
	else:
		print("damage feedback called on puppet, ignoring")
		return

func _ready() -> void:
	#Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
	view_zoom_target = 1.0
	
	var banner_material = $FocusBanner.mesh.surface_get_material(0).duplicate()
	$FocusBanner.mesh.surface_set_material(0, banner_material)
	
	focus_banner(false)

	if is_multiplayer_authority(): # prevent puppets from attempting to steer the authority - this just causes RPC errors
		input_active = true
		$Head/Camera.current = true
	else:
		input_active = false
		$Head/Camera.current = false
	
	$Jetpack/JetpackSound.playing = true
	$Jetpack/JetpackSound.stream_paused = true

	$SpawnVFX.emitting = true
	
func aim(event) -> void:
	var mouse_motion = event as InputEventMouseMotion
	
	if mouse_motion:
		var adjusted_mouse_sensitivity = 1.0
		if "Sensitivity" in settings.keys():
			adjusted_mouse_sensitivity = mouse_sensitivity * settings["Sensitivity"]
		
		rotation.y -= deg2rad(mouse_motion.relative.x * adjusted_mouse_sensitivity / view_zoom)
		
		var current_tilt: float = head.rotation.x
		current_tilt -= deg2rad(mouse_motion.relative.y * adjusted_mouse_sensitivity / view_zoom)
		head.rotation.x = clamp(current_tilt, deg2rad(-90), deg2rad(90))

func _input(event) -> void:
	if dead:
		return
	
	if not input_active:
		return
	
	#assert(is_multiplayer_authority() == true, "input_active is true, even though the node is not multiplayer_authority")
	if is_multiplayer_authority() == false:
		print("Input is active, but we're not the authority. WTF?!")
		input_active = false
		return
	
	if Input.is_action_just_pressed("view_zoom"):
#		tween.remove_all()
#		tween.interpolate_property(self, "view_zoom", view_zoom, 4.0, 0.5, Tween.TRANS_SINE, Tween.EASE_IN_OUT)
#		tween.start()
		view_zoom_direction = true
		view_zoom_target = 4.0
	
	if Input.is_action_just_released("view_zoom"):
#		tween.remove_all()
#		tween.interpolate_property(self, "view_zoom", view_zoom, 1.0, 0.25, Tween.TRANS_SINE, Tween.EASE_IN_OUT)
#		tween.start()
		view_zoom_direction = false
		view_zoom_target = 1.0
		
	aim(event)
	
	var can_shoot = true if view_zoom <= 1.05 else false
	
	if can_shoot and Input.is_action_just_pressed("trigger_primary"):
		weapon.trigger(0, true)
	elif Input.is_action_just_released("trigger_primary"):
		weapon.trigger(0, false)
	if can_shoot and Input.is_action_just_pressed("trigger_secondary"):
		weapon.trigger(1, true)
	elif Input.is_action_just_released("trigger_secondary"):
		weapon.trigger(1, false)

func _process(delta):
	$Jetpack/GPUParticles3D.emitting = jetpack_active
	
	if jetpack_active:
		$Jetpack/JetpackSound.stream_paused = false
		$Jetpack/OmniLight3D.show()
		$Jetpack/OmniLight3D.light_energy = randf_range(2, 5)
	else:
		$Jetpack/JetpackSound.stream_paused = true
		$Jetpack/OmniLight3D.hide()
	
	# show focus banner on demand
	
	if focus_banner_show:
		focus_banner_alpha = min(focus_banner_alpha + focus_banner_inc * delta, 1.0)
	else:
		focus_banner_alpha = max(focus_banner_alpha - focus_banner_dec * delta, 0.0)
		
	$FocusBanner.mesh.surface_get_material(0).set("albedo_color", Color(1,1,1, focus_banner_alpha))
	
	#print("PLayer: ", name, "; Focus banner alpha: ", focus_banner_alpha, "; Focus banner show: ", focus_banner_show)
		
	if not input_active:
		return
		
	# demand seeing other player's banner:
	#print("Last viewed banner is ", last_viewed_banner)
	if $"Head/Camera/RayCast3D".is_colliding():
		#print("Probe got ", $"Head/Camera/RayCast3D".get_collider().name)
		if $"Head/Camera/RayCast3D".get_collider().has_method(&"view_banner"):
			$"Head/Camera/RayCast3D".get_collider().view_banner(true)
			last_viewed_banner = $"Head/Camera/RayCast3D".get_collider()
	elif last_viewed_banner:
		last_viewed_banner.view_banner(false)
	
	
	#assert(is_multiplayer_authority() == true, "input_active is true, even though the node is not multiplayer_authority")
	
	if is_multiplayer_authority() == false:
		print("input_active is true, while we're not the authority. WTF?")
		input_active = false
		return
	
	if view_zoom_direction and view_zoom < view_zoom_target:
		view_zoom = min(view_zoom_target, view_zoom + delta * 4)
	elif not view_zoom_direction and view_zoom > view_zoom_target:
		view_zoom = max(view_zoom_target, view_zoom - delta * 4)
	
	hud.get_node("Stats").get_node("JetpackBar").value = (jetpack_fuel / jetpack_tank) * 100
	
	# weapon spread
	weapon.spread = max(lerp(weapon.spread, weapon.spread_min, weapon.spread_lerp), weapon.spread_min)

@rpc(call_local, any_peer, reliable) func moan():
	var anims = ["01", "02", "03", "04"]
	$Pain.play(anims[randi() % 4])
	
@rpc(call_local, any_peer, reliable) func take_damage(attacker: int, hit_position: Vector3, hit_normal: Vector3, damage:int, source_position: Vector3, damage_type, push: float):
	var attacker_node = main.get_node("Players").get_node(str(attacker))
	
	if is_multiplayer_authority():
		print("Taken damage: ", damage, " by: ", attacker, " from: ", source_position)
		hud.damage(damage)
		health -= damage # reduce health
		
		if health <= 0: # are we dead?
			print("Died")
			rpc(&'die', attacker)
			
			attacker_node.rpc(&'damage_feedback', true) # let the attacker know he's got a kill
		else:
			attacker_node.rpc(&'damage_feedback', false) # let the attackr know he's got a hit
		
		main.update_hud()
		
	if not dead:
		rpc(&'moan') # all puppets must scream!
			
	# spawn the bullet hit effect
	var impact_vfx = impact_player.instantiate()
	impact_vfx.global_transform = impact_vfx.global_transform.looking_at(hit_normal)
	impact_vfx.global_transform.origin = hit_position
	get_tree().root.add_child(impact_vfx)

@rpc(any_peer, call_local, reliable) func spawn(spawn_transform: Transform3D):
	dead = false

	self.global_transform = spawn_transform
	
	health = max_health
	$Head/Camera.position.y = 0
	$Head/Camera.rotation.z = 0
	jetpack_fuel = jetpack_tank
	
	self.show()
	$Body.disabled = false
	$SpawnSFX.play()
	$SpawnVFX.emitting = true
	
	if is_multiplayer_authority(): # don't touch these on puppets
		hud.pain = 0
		crosshair.show()

@rpc(any_peer, call_local, reliable) func die(killer_pid: int):
	if killer_pid == -1: # we're disconnecting from the game
			#main.chat.chat_notification("Player [/i][b][color=" + main.player_list.players[self.get_multiplayer_authority()].color.to_html() + "]" + main.player_list.players[self.get_multiplayer_authority()].name + "[/color][/b][i] left the game.")
			pass
	else:	
		var gibs = gibs_vfx.instantiate()
		get_tree().root.add_child(gibs)
		gibs.global_transform = self.global_transform
		
		var decal = blood_decal.instantiate()
		get_tree().root.add_child(decal)
		decal.global_transform = self.global_transform
				
		if is_multiplayer_authority(): # don't touch these on puppets
			hud.pain = 3
			crosshair.hide()
			
		#main.chat.rpc(&'chat_notification', "Player [/i][b][color=" + main.player_list.players[self.get_multiplayer_authority()].color.to_html() + "]" + main.player_list.players[self.get_multiplayer_authority()].name + "[/color][/b][i] was killed by " + main.player_list.players[killer_pid].name )
		main.chat.chat_notification("Player [/i][b][color=" + main.player_list.players[self.get_multiplayer_authority()].color.to_html() + "]" + main.player_list.players[self.get_multiplayer_authority()].name + "[/color][/b][i] was killed by " + main.player_list.players[killer_pid].name )
		
		revenge_pid = killer_pid
		
		$Head/Camera.position.y = -1 # lower the head to the ground, let the player see their gibs
		$Head/Camera.rotation.x = 0 # reset the tilt so the camera looks forward
		$Head/Camera.rotation.z = -20
		
		jetpack_active = false
		view_zoom_target = 1.0
		view_zoom = 1
		
	dead = true
	main.destroy_player(self.get_multiplayer_authority())
	self.hide()
	$Body.disabled = true

	#if get_tree().get_rpc_sender_id() != get_multiplayer_authority():
#		print ("Death requested by a non-master. Ignoring")
#		return
	#main.rpc(&'destroy_player', self.get_multiplayer_authority())


	#queue_free()

func update_player(info) -> void:
	update_color(info.color)

func update_color(color) -> void: #change player's wolrldmodel color

	var player_material = mesh.mesh.surface_get_material(0).duplicate()
	player_material.albedo_color = color
	mesh.set_surface_override_material(0, player_material)

func _physics_process(delta):
	if dead: # workaround for Godot player destruction crash
		motion_velocity = Vector3.ZERO
		return
	
	if not is_multiplayer_authority():
		move_and_slide()
		return

	direction = Vector3.ZERO
	
	if is_on_floor() and ground_check.is_colliding() and not jetpack_active:
		#snap = -get_floor_normal()
		medium = "ground"
		gravity_vec = Vector3.ZERO
	else:
		#snap = Vector3.DOWN
		medium = "air"
		gravity_vec += Vector3.DOWN * gravity * delta
		
	if input_active:
		if Input.is_action_just_pressed("move_jump") and is_on_floor():
			#snap = Vector3.ZERO
			gravity_vec = Vector3.UP * jump
			$JumpSFX.rpc(&"play")
		
		if Input.is_action_pressed("move_forward"):
			direction -= transform.basis.z
		if Input.is_action_pressed("move_backward"):
			direction += transform.basis.z
		if Input.is_action_pressed("move_left"):
			direction -= transform.basis.x
		if Input.is_action_pressed("move_right"):
			direction += transform.basis.x
		
		jetpack_was_active = jetpack_active
		
		if jetpack_was_active:
			jetpack_active = Input.is_action_pressed("move_special") if jetpack_fuel > 0 else false
		else:
			jetpack_active = Input.is_action_just_pressed("move_special") if jetpack_fuel > jetpack_min else false
	
	if jetpack_active:
		gravity_vec[1] += jetpack_thrust * delta
		jetpack_fuel -= delta
	elif jetpack_fuel < jetpack_tank:
		jetpack_fuel = min(jetpack_tank, jetpack_fuel + jetpack_recharge * delta)
	
	#print("Jetpack fuel: ", jetpack_fuel, " active: ", jetpack_active, " delta: ", delta, " gravity vec: ", gravity_vec)

	if direction.length() > 0: # normalized() will return a null
		direction = direction.normalized()
	
	# weapon bob
	if direction.length() > 0:
		if is_on_floor():
			$Head/Camera/Hand/Weapon.transform.origin.y = lerp($Head/Camera/Hand/Weapon.transform.origin.y, sin(main.uptime * 10) / 15, 4 * delta)
	else:
		$Head/Camera/Hand/Weapon.transform.origin.y *= 1 - delta * 8
		$Head/Camera/Hand/Weapon.transform.origin.y += sin(main.uptime * 2) / 1000 * delta
	$Head/Camera/Hand/Weapon.transform.origin.y -= motion_velocity.y * delta / 60
	
	if Input.is_action_just_pressed("move_jump") and is_on_floor():
	#	var tween = create_tween()
		$Head/Camera/Hand/Weapon.transform.origin.y -= 0.025
		#$Head/Camera/Hand/Weapon.transform.origin.y -= 0.05
	
	if is_on_floor() and not previously_on_floor:
		$Head/Camera/Hand/Weapon.transform.origin.y -= 1
#	if 
#		$Head/Camera/Hand/Weapon.transform.origin.y -= 0.25
	
	speed = speed_type[medium]
	accel = accel_type[medium]
	
	velocity = velocity.lerp(direction * speed, accel * delta)
	
	motion_velocity = velocity + gravity_vec
	move_and_slide()
	
	if not is_on_floor() and not ground_check.is_colliding(): # while in mid-air collisions affect momentum
		velocity.x = motion_velocity.x
		velocity.z = motion_velocity.z
		gravity_vec.y = motion_velocity.y
	
	previously_on_floor = is_on_floor()
	
	#lagging_movement_velocity.lerp(motion_velocity, delta)
	
	rpc(&'update_movement', global_transform, head.get_rotation(), motion_velocity, jetpack_active)
	
	# (stair) climbing
	#   ↓ disabled - Tween is undergoing redesign in Godot 4
#	if get_slide_count() > 1 and climb_check.is_colliding() and false:
#		#print("climb started at climb state: ", climb_state)
#		var test_y = climb_height * (1 - climb_state)
#		#print("test_y: ", test_y)
#		var climb_test_start = global_transform.translated(Vector3(0, test_y, 0))
#		var climb_test_step =  Vector3(0,0,-0.1).rotated(Vector3.UP, rotation.y)
#		if not test_move(climb_test_start, climb_test_step): # no collision
#			var step = climb_check.get_collision_point().y
#			var start = global_transform.origin.y
##			print("step: ", step, " start: ", start)
#			climb_state = clamp((step - start) / climb_height, 0, 1)
#			global_transform.origin.y += climb_height * climb_state
#			#print("climb state to start: ", climb_state)
##			print("Climb height: ", step - start, " Climb state: ", climb_state)
#			climb_tween.remove_all()
#			climb_tween.interpolate_property(self, "climb_state", climb_state, 0.0, climb_time, Tween.TRANS_CUBIC, Tween.EASE_IN)
#			climb_tween.start()