extends AnimatedSprite3D
class_name View

@onready var 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 on_end:bool	

var trans_list = []
var move_sprite_frames:SpriteFrames

func _ready():
	# 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_with_condition("any","hit1","trigger_hit","is_floating","=",false)
	trigger_with_condition("any","mhit","trigger_mhit","is_floating","=",false)
	trigger_with_condition("any","lhit","trigger_lhit","is_floating","=",false)
	run("hit1","hit2_loop")
	run("hit3","idle_loop")
	run("mhit3","idle_loop")
	trans("hit2_loop","hit3","is_stagger","=",false)
	trans("mhit2_loop","mhit3","is_stagger","=",false)
	trans("lhit2_loop","lhit3","is_stagger","=",false)
	run("mhit1","mhit2_loop")
	run("lhit1","lhit2_loop")
	run("lhit3","idle_loop")
	
	#空中受击
	trigger_with_condition("any","airhit1","trigger_hit","is_floating","=",true)
	run("airhit1","airhit2_loop")
	trans("airhit2_loop","airhit3","speed_y","<",0)
	run("airhit3","airhit4_loop")
	trans("airhit4_loop","airhit5","is_on_floor","=",true)
	run("airhit5","ground1_loop")
	trans("ground1_loop","ground2","is_stagger","=",false)
	run("ground2","idle_loop")
	
func _process(delta):
	update_view()
	if not status.is_skill_running and status.is_pause == is_playing():
		if status.is_pause:pause();
		else:play();
	if status.is_pause:return
	update_flip()
	update_trans(false)
	update_texture()
	update_flash_white()

func init(default:SpriteFrames):
	sprite_frames = default
	move_sprite_frames = default
	play("idle_loop")

func reset():
	sprite_frames = move_sprite_frames
	play("idle_loop")

func run(from:StringName,to:StringName):
	_add_trans(from,to,"","","","",true)
	
func run_with_condition(from:StringName,to:StringName,condition,compareType,conditionValue):
	_add_trans(from,to,condition,compareType,conditionValue,"",true)
		
func trans(from:StringName,to:StringName,condition,compareType,conditionValue):
	_add_trans(from,to,condition,compareType,conditionValue,"",false)

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

func trigger_with_condition(from:StringName,to:StringName,trigger_name:StringName,condition,compareType,conditionValue):
	_add_trans(from,to,condition,compareType,conditionValue,trigger_name,false)

func _add_trans(from:StringName,to:StringName,condition,compareType,conditionValue,trigger_name:StringName,on_end:bool):
	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
	new_trans.on_end = on_end
	trans_list.append(new_trans)
				
func update_trans(on_end:bool):
	for trans in trans_list:
		if on_end != trans.on_end:
			continue
		if not (trans.from == "any" or trans.from == animation):
			continue
		if trans.condition != "":
			var conditionValue = status.get(trans.condition)
			match trans.compareType:
				">":if conditionValue <= trans.conditionValue:continue
				"<":if conditionValue >= trans.conditionValue:continue
				"=":if conditionValue != trans.conditionValue:continue
		if trans.trigger_name != "":
			if status.get(trans.trigger_name):
				status.set(trans.trigger_name,false)
			else:continue
		play(trans.to)

func update_flip():
	scale.x = 1 if status.is_right else -1

func update_view():
	position = status.basic_offset + status.shake_offset
	
func _on_animation_finished():
	update_trans(true)
	
func update_texture():
	var tex = sprite_frames.get_frame_texture(animation,frame)
	var material = material_override as ShaderMaterial
	material.set_shader_parameter("tex",tex)
	
func update_flash_white():
	var material = material_override as ShaderMaterial
	material.set_shader_parameter("flash_white",status.flash_white_rate)

func clone(target:AnimatedSprite3D):
	target.sprite_frames = sprite_frames
	target.animation = animation
	target.frame = frame
	target.frame_progress = frame_progress
	target.scale = scale