extends AnimatedSprite3D
class_name View

@onready var status: Status = (%Status as Status)


class Trans:
	var condition: StringName
	var compareType: String
	var conditionValue
	var from: StringName
	var to: StringName
	var trigger_name: StringName

var trans_dict: Dictionary = {} # {condition/trigger:{from:Trans[]}}
var status_change_cache = []
var move_sprite_frames: SpriteFrames

func init(default: SpriteFrames):
	sprite_frames = default
	move_sprite_frames = default
	
	status.character_status_changed.connect(_on_character_status_changed)
	animation_finished.connect(_on_animation_finished)
	animation_changed.connect(_on_animation_changed)
	frame_changed.connect(_on_frame_changed)
	trans_register()
	play_animation("idle_loop")

func reset():
	sprite_frames = move_sprite_frames
	if status.is_on_floor:
		play_animation("idle_loop")
	else:
		play_animation("jump4_loop")

func trans_register() -> void:
	# 地面行走
	trans("idle_loop", "run1", "speed_xz", ">", 1)
	run("run1", "run2_loop")
	trans("run1", "run3", "speed_xz", "<", 1)
	trans("run2_loop", "run3", "speed_xz", "<", 1)
	run("run3", "idle_loop")
	trans("run3", "run1", "speed_xz", ">", 1)

	# 跳跃
	trigger("any", "jump1", "trigger_jump")
	run("jump1", "jump2_loop")
	trans("jump2_loop", "jump3", "speed_y", "<=", 0)
	run("jump3", "jump4_loop")
	trans("jump4_loop", "jump5", "is_on_floor", "=", true)
	run("jump5", "idle_loop")
	trans("jump5", "run1", "speed_xz", ">", 1)

	#地面受击
	trigger("any", "hit", "trigger_hit")
	trigger("any", "mhit", "trigger_mhit")
	trigger("any", "lhit", "trigger_lhit")
	run("hit", "idle_loop")
	run("mhit", "idle_loop")
	run("lhit", "idle_loop")

	#地面眩晕受击
	trigger("any", "stunhit", "trigger_stun_hit")
	run("stunhit", "ground_stun1_loop")

	#空中受击
	trigger("any", "airhit1", "trigger_air_hit_up")
	trigger("any", "airhit4_loop", "trigger_air_hit_down")
	run("airhit1", "airhit2_loop")
	trans("airhit2_loop", "airhit3", "speed_y", "<=", 0)
	run("airhit3", "airhit4_loop")
	trans("airhit4_loop", "airhit5_select", "is_on_floor", "=", true)

	#空中受击落地
	run_with_condition("airhit5_select", "airhit5_stun", "is_stun", "=", true)
	run_with_condition("airhit5_select", "airhit5", "is_stun", "=", false)
	run("airhit5_stun", "ground_stun1_loop")
	run("airhit5", "ground1_loop")

	#起身
	trans("ground1_loop", "ground2", "is_stagger", "=", false)
	run("ground2", "idle_loop")
	trans("ground_stun1_loop", "ground_stun2", "is_stun", "=", false)
	run("ground_stun2", "idle_loop")


	#落地反弹
	trigger("any", "rebound", "trigger_rebound")
	run("rebound", "airhit2_loop")

func _process(_delta) -> void:
	if status.is_be_throw: return
	if status.is_pause: return
	for status_change_cache_single in status_change_cache:
		update_trans(status_change_cache_single)
	status_change_cache.clear()
	
func _on_character_status_changed(status_name, _value) -> void:
	if status_name in trans_dict:
		status_change_cache.append(status_name)
		return
	if status_name == "is_right":
		scale.x = 1 if status.is_right else -1
	if status.is_be_throw: return
	if status_name == "is_skill_running" or status_name == "is_pause":
		if not status.is_skill_running and status.is_pause == is_playing():
			if status.is_pause: pause()
			else: play_animation(animation)
	if status_name == "basic_offset" or status_name == "shake_offset":
		position = status.basic_offset + status.shake_offset
	#	global_position = Util.snap_vector3(global_position)
	if status.is_pause: return
	if status_name in ["deformation_rate", "flash_white_rate"]:
		update_material()
	

func _on_animation_finished():
	update_trans("animation_end")

func _on_animation_changed() -> void:
	update_material_tex()

func _on_frame_changed() -> void:
	update_material_tex()


func run(from: StringName, to: StringName):
	_add_trans(from, to, "animation_end", "", "", "", "")


func run_with_condition(from: StringName, to: StringName, condition, compareType, conditionValue):
	_add_trans(from, to, "animation_end", condition, compareType, conditionValue, "")


func trans(from: StringName, to: StringName, condition, compareType, conditionValue):
	_add_trans(from, to, condition, condition, compareType, conditionValue, "")


func trigger(from: StringName, to: StringName, trigger_name: StringName):
	_add_trans(from, to, trigger_name, "", "", "", trigger_name)


func _add_trans(from: StringName, to: StringName, key: String, condition, compareType, conditionValue, trigger_name: StringName):
	var new_trans = Trans.new()
	new_trans.condition = condition
	new_trans.compareType = compareType
	new_trans.conditionValue = conditionValue
	new_trans.from = from
	new_trans.to = to
	new_trans.trigger_name = trigger_name

	if not key in trans_dict:
		trans_dict[key] = {}
	if not from in trans_dict[key]:
		trans_dict[key][from] = []
	trans_dict[key][from].append(new_trans)


func update_trans(key: String) -> void:
	if not key in trans_dict:
		return
	if status.current_animation in trans_dict[key]:
		update_trans_single(trans_dict[key][status.current_animation])
	if "any" in trans_dict[key]:
		update_trans_single(trans_dict[key]["any"])


func update_trans_single(trans_list) -> void:
	for trans_single in trans_list:
		if trans_single.condition != "":
			var value = status.get_status(trans_single.condition)
			match trans_single.compareType:
				">": if value <= trans_single.conditionValue: continue
				"<": if value >= trans_single.conditionValue: continue
				">=": if value < trans_single.conditionValue: continue
				"<=": if value > trans_single.conditionValue: continue
				"=": if value != trans_single.conditionValue: continue
		if trans_single.trigger_name != "":
			if status.get_status(trans_single.trigger_name):
				status.set_status(trans_single.trigger_name, false)
			else:
				continue
		play_animation(trans_single.to)


func update_view():
	position = status.basic_offset + status.shake_offset
#	global_position = Util.snap_vector3(global_position)


func update_material() -> void:
	call_deferred("_update_material")
	return


func _update_material():
	if not sprite_frames:
		return
	var material: ShaderMaterial = material_override as ShaderMaterial
	var material2: ShaderMaterial = material_override.next_pass as ShaderMaterial
	var deformation_rate: float = status.deformation_rate * (0.6 if status.is_floating else 0.4)
	if material:
		material.set_shader_parameter("flash_white", status.flash_white_rate)
		material.set_shader_parameter("deformation_dir", status.deformation_dir)
		material.set_shader_parameter("deformation_rate", deformation_rate)
	if material2:
		material2.set_shader_parameter("flash_white", status.flash_white_rate)
		material2.set_shader_parameter("deformation_dir", status.deformation_dir)
		material2.set_shader_parameter("deformation_rate", deformation_rate)


func update_material_tex() -> void:
	call_deferred("_update_material_tex")
	return


func _update_material_tex():
	if not sprite_frames:
		return
	var material: ShaderMaterial = material_override as ShaderMaterial
	var material2: ShaderMaterial = material_override.next_pass as ShaderMaterial
	var tex: Texture2D = sprite_frames.get_frame_texture(animation, frame)
	if material:
		material.set_shader_parameter("tex", tex)
	if material2:
		material2.set_shader_parameter("tex", tex)


func play_animation(animation_name: String) -> void:
	status.set_status("current_animation", animation_name)
	if not sprite_frames:
		return
	if not sprite_frames.has_animation(animation_name):
		update_trans("animation_end")
		return
	if animation_name == animation:
		frame = 0
		frame_progress = 0
		play()
	else:
		play(animation_name, Setting.animation_speed_scale)