TouhouGD/script/character/battle.gd

extends Node3D
class_name Battle

@export var hit_back_limit_curve: Curve
@export var pause_time_limit_curve: Curve

@onready var character: Character = (get_owner() as Character)
@onready var status: Status = (%Status as Status)
@onready var skill: Skill = (%Skill as Skill)
@onready var move: Move = (%Move as Move)
@onready var battle_attack_area: BattleAttackArea = (%BattleAttackArea as BattleAttackArea)


func attack1() -> void:
	if not status.skill_cfg:
		return
	var attack_info: Struct.AttackInfo = Struct.AttackInfo.new()
	attack_info.attack = status.skill_cfg.attack1
	attack_info.attack_box = status.skill_cfg.attack1_box
	attack_info.attack_dir = status.skill_dir
	attack_info.with_stop = status.skill_cfg.attack1_with_stop
	attack_info.ignore_push = status.skill_cfg.ignore_push
	add_attack(attack_info)


func attack2() -> void:
	if not status.skill_cfg:
		return
	var attack_info: Struct.AttackInfo = Struct.AttackInfo.new()
	attack_info.attack = status.skill_cfg.attack2
	attack_info.attack_box = status.skill_cfg.attack2_box
	attack_info.attack_dir = status.skill_dir
	attack_info.with_stop = status.skill_cfg.attack2_with_stop
	attack_info.ignore_push = status.skill_cfg.ignore_push
	add_attack(attack_info)


func character_attack1() -> void:
	var attack_info: Struct.AttackInfo = Struct.AttackInfo.new()
	attack_info.attack = status.cfg.attack1
	attack_info.attack_box = status.cfg.attack1_box
	attack_info.attack_dir = status.move_dir
	add_attack(attack_info)


func character_attack2() -> void:
	var attack_info: Struct.AttackInfo = Struct.AttackInfo.new()
	attack_info.attack = status.cfg.attack2
	attack_info.attack_box = status.cfg.attack2_box
	attack_info.attack_dir = status.move_dir
	add_attack(attack_info)


func add_attack(attack_info: Struct.AttackInfo) -> void:
	if not attack_info.attack or not attack_info.attack_box:
		return
	if character.has_buff("hit_ground_cd") and attack_info.attack == ResourceManager.cfg_attack_rebound:
		return
	var result: Character
	if attack_info.attack_box.is_throw:
		var target: Character = Global.character_mgr.get_character(status.throw_target)
		if target:
			result = target
	elif attack_info.attack_box.is_direct:
		var target: Character = Global.character_mgr.get_character(status.target)
		if target:
			result = target
	else:
		battle_attack_area.refresh_attack_area(attack_info)
		var offset_xz: Vector2 = attack_info.attack_dir * attack_info.attack_box.offset.x
		var offset_y: float    = attack_info.attack_box.offset.y
		var offset: Vector3    = Vector3(offset_xz.x, offset_y, offset_xz.y)
		var shape: Shape3D     = attack_info.attack_box.shape
		_debug_draw_attack_box(shape, offset)
		return
	on_attack_character(result, attack_info)


func _debug_draw_attack_box(shape: Shape3D, offset: Vector3) -> void:
	if not get_tree().debug_collisions_hint:
		return
	if shape is BoxShape3D:
		var box_scale: Vector3 = shape.size
		character.cast_particle(ResourceManager.particle_debug_box, false, offset, box_scale)
	elif shape is CylinderShape3D:
		var box_scale: Vector3 = Vector3(shape.radius, shape.height, shape.radius)
		character.cast_particle(ResourceManager.particle_debug_cylinder, false, offset, box_scale)
	return


func on_attack_character(result: Character, attack_info: Struct.AttackInfo) -> void:
	if not result:
		return
	if attack_info.attack_box.is_hit_self != (result.team() == character.team()):
		return
	status.is_hit_character = true
	var hit_result: Struct.HitResultInfo = settle(character.id(), result.id(), attack_info)
	on_attack_hit(hit_result)


func settle(from: int, to: int, attack_info: Struct.AttackInfo) -> Struct.HitResultInfo:
	var attack: AttackCfg                = attack_info.attack
	var attack_dir: Vector2              = attack_info.attack_dir
	var with_stop: bool                  = attack_info.with_stop
	var ignore_push: bool                = attack_info.ignore_push
	var hit_result: Struct.HitResultInfo = Struct.HitResultInfo.new()

	var character_from: Character = Global.character_mgr.get_character(from) as Character
	var character_to: Character   = Global.character_mgr.get_character(to) as Character
	if !character_from or !character_to:
		return hit_result

	var cfg_from: CharacterCfg = character_from.cfg()
	var cfg_to: CharacterCfg   = character_to.cfg()

	var is_dead                = character_to.get_status("is_dead")
	var is_stun                = character_to.get_status("is_stun")
	var hp                     = character_to.get_status("hp")
	var shield                 = character_to.get_status("shield")
	var has_shield: bool       = shield > 0
	var is_stagger: bool       = character_to.has_buff("stagger")
	var is_on_floor: bool      = character_to.get_status("is_on_floor")
	var is_self_on_floor: bool = character_from.get_status("is_on_floor")

	var is_floating: bool = attack.is_floating or not is_on_floor
	var is_rebound: bool  = attack.is_rebound and (character_from == character_to)
	var is_bullet: bool   = int(character_from.cfg().type) == Enum.ECharacterType.Bullet

	var is_break_shield: bool     = false
	var is_break_stun: bool       = false
	var is_block: bool            = false
	var is_kill: bool             = false
	var is_break_skill: bool      = false
	var is_break_skill_real: bool = false

	#基本伤害
	var damage: float = attack.damage_rate * cfg_from.attack

	#硬直等级
	var break_level_def: int = character_to.get_break_level_def()
	var break_level_sub: int = clampi(attack.break_level - break_level_def, -1, 4)
	is_break_skill_real = break_level_sub > 0
	is_break_skill = is_break_skill_real or not is_on_floor
	#硬直等级伤害修正
	if break_level_sub == -1:
		damage = 0
	elif break_level_sub == 0:
		damage *= 0.5

	is_floating = is_break_skill and is_floating
	is_block = not is_break_skill

	#造成伤害
	if has_shield:
		damage = min(shield, damage)
		character_to.set_shield(shield-damage)
		is_break_shield = damage == shield
		if is_break_shield:
			character_to.remove_buff("shield_recover_cd")
			character_to.remove_buff("shield_recover")
			has_shield = false
		else:
			character_to.remove_buff("shield_recover")
			character_to.add_buff("shield_recover_cd", cfg_to.shield.recover_cd)
	else:
		damage = min(hp, damage)
		character_to.set_status("hp", hp-damage)
		is_kill = (damage>0) and (damage == hp)
		if is_kill:
			character_to.add_buff("die", 1)

	#卡帧时间计算
	var pause_time: float
	if is_break_skill:
		var break_level_sum_rate: float
		break_level_sum_rate = attack.break_level / 4.0
		pause_time = pause_time_limit_curve.sample(break_level_sum_rate)

	#格挡 带盾破防 破盾以及击杀具有固定值
	if is_block:
		pause_time = 0.05
		break_level_sub = 0
	elif has_shield and is_break_skill and not is_stagger:
		pause_time = 0.1
		break_level_sub = 2
	elif is_break_shield:
		pause_time = 0.2
		break_level_sub = 3
	elif is_kill:
		pause_time = 0.3
		break_level_sub = 4
	
	if not attack.damage_type == Enum.EDamageType.Blunt:
		pause_time *= 0.6

	#眩晕值累加
	if not is_stun:
		var stun_damage: float = attack.stun_attack
		var stun               = character_to.get_status("stun")
		var stun_max           = character_to.get_status("stun_max")
		stun_damage = min(stun_max-stun, stun_damage)
		character_to.set_status("stun", stun+stun_damage)
		is_break_stun = stun_damage == stun_max-stun
		if is_break_stun:
			is_stun = true
			character_to.set_status("is_stun", true)
			character_to.remove_buff("stun_recover_cd")
			character_to.remove_buff("stun_recover")
			character_to.add_buff("stun_recover_break_cd", cfg_to.stun.recover_break_cd)
		else:
			character_to.remove_buff("stun_recover")
			character_to.add_buff("stun_recover_cd", cfg_to.stun.recover_cd)

	#mp累加
	if not is_bullet:
		character_from.add_mp_sub(damage * cfg_from.mp.add_rate_attack, true)
	character_to.add_mp_sub(damage * cfg_to.mp.add_rate_hit, true)

	#被动锁定目标转移
	if not status.is_lock and not is_dead and not is_bullet:
		character_from.set_status("target", character_to.id())

	#受击结束警戒
	character_to.set_status("ai_is_alert", true)

	#投技检测
	if is_break_skill and attack.is_throw_check and not character_to.get_status("is_be_throw") and status.throw_target == 0:
		character_to.set_status("is_be_throw", true)
		status.throw_target = character_to.id()
		is_floating = true

	#投技结束
	if attack.is_throw_end:
		character_to.set_status("is_be_throw", false)
		status.throw_target = 0

	#碰撞距离计算
	var character_dir: Vector2 = character_to.pos2D() - character_from.pos2D()
	var dist: float            = character_dir.length()
	var radius_sum: float      = character_from.radius() + character_to.radius()
	var dist_rate: float       = clamp(dist / radius_sum, 0, 1)

	if is_break_skill:
		#取消技能
		if character_to.get_status("is_skill_running"):
			character_to.cancel_skill()

		#停止移动
		character_to.move_stop()

		#受击动画
		var trigger_hit: String = ""
		if is_rebound: trigger_hit="rebound"
		elif is_floating: trigger_hit = "air_hit_down" if attack.hit_up_speed<0 else "air_hit_up"
		elif is_stun: trigger_hit="stun_hit"
		elif break_level_sub == 4: trigger_hit="lhit"
		elif break_level_sub == 3: trigger_hit="mhit"
		elif break_level_sub == 2: trigger_hit="mhit"
		elif break_level_sub == 1: trigger_hit="hit"
		character_to.set_view_trigger(trigger_hit)

		var hit_up_speed: float   = attack.hit_up_speed
		var hit_back_speed: float = attack.hit_back_speed

		#浮空 击落 强制位移
		if is_floating:
			character_to.add_buff("stagger", -1)
			character_to.add_buff("floating", -1)
			if attack_dir.x!=0:
				character_to.set_status("is_right", attack_dir.x<0)
		else:
			match break_level_sub:
				1: character_to.add_buff("stagger", 0.3)
				2: character_to.add_buff("stagger", 0.6)
				3: character_to.add_buff("stagger", 0.6)
				4: character_to.add_buff("stagger", 0.9)
			hit_up_speed = 0
			if hit_back_limit_curve:
				hit_back_speed = max(hit_back_limit_curve.sample(dist_rate), hit_back_speed)
		if not is_break_skill_real:
			hit_up_speed *= 0.75

		character_to.set_hit_move(attack_dir, hit_back_speed, hit_up_speed)
		character_to.add_buff("hit_back", attack.hit_back_duration)
		character_to.add_buff("hit_up", attack.hit_up_duration)

	#停止自身位移
	if not is_bullet:
		#character_from.move_tick(pause_time)
		if with_stop:
			character_from.move_stop()
			character_from.set_status("skill_move_stop", true)

	#攻击到不可移动的物体 造成自身后退
	var is_against_wall: bool = character_to.move_tick(pause_time)
	if is_self_on_floor and not is_bullet and not ignore_push and (is_against_wall or not is_break_skill):
		var self_hit_back_speed = max(hit_back_limit_curve.sample(dist_rate), 2)
		character_from.move_stop()
		character_from.set_status("skill_move_stop", true)
		character_from.set_hit_move(-attack_dir, self_hit_back_speed, 0)
		character_from.add_buff("hit_back", attack.hit_up_duration)

	#受击pt掉落
	if damage>0:
		if is_kill || is_break_shield:
			Global.item_mgr.create_pt(Enum.EPtType.MP, Setting.pt_mp_break_or_kill, character_to.pos())
			Global.item_mgr.create_pt(Enum.EPtType.HP, Setting.pt_hp_break_or_kill, character_to.pos())
		else:
			Global.item_mgr.create_pt(Enum.EPtType.MP, damage * Setting.pt_mp_damage_rate, character_to.pos())

	#受击特效
	if not attack.is_throw_end:
		var particle_hit: PackedScene
		match attack.damage_type:
			Enum.EDamageType.Sharp:
				match break_level_sub:
					-1: particle_hit = ResourceManager.particle_hit_sharp_block
					0: particle_hit = ResourceManager.particle_hit_sharp_block
					1: particle_hit = ResourceManager.particle_hit_sharp_normal
					2: particle_hit = ResourceManager.particle_hit_sharp_mid
					3: particle_hit = ResourceManager.particle_hit_sharp_heavy
					4: particle_hit = ResourceManager.particle_hit_sharp_heavy
			Enum.EDamageType.Blunt:
				match break_level_sub:
					-1: particle_hit = ResourceManager.particle_hit_blunt_block
					0: particle_hit = ResourceManager.particle_hit_blunt_block
					1: particle_hit = ResourceManager.particle_hit_blunt_normal
					2: particle_hit = ResourceManager.particle_hit_blunt_mid
					3: particle_hit = ResourceManager.particle_hit_blunt_heavy
					4: particle_hit = ResourceManager.particle_hit_blunt_heavy
			_: pass
		if particle_hit:
			character_to.cast_particle(particle_hit, false)
	#受击通用特效
	character_to.cast_particle(ResourceManager.particle_hit_common, false)
	#受击材质特效
	if damage > 0:
		var material: Enum.EMaterial = cfg_to.material_on if has_shield else cfg_to.material_off
		match material:
			Enum.EMaterial.Cloth: character_to.cast_particle(ResourceManager.particle_material_cloth, false)
			_: pass

	#抖动
	if is_block:
		character_from.add_buff("shake_x", 0.2, true)
	else:
		character_to.add_buff("shake_x", 0.2, true)

	#闪白
	character_to.add_buff("flash_white", 0.04)

	#卡帧
	if not is_bullet:
		character_from.set_pause_time(pause_time)
		character_to.set_pause_time(pause_time)

	#全局特效
	var has_global_effect: bool = character_from.is_player() or character_to.is_player()
	if has_global_effect:
		Global.camera_mgr.effect(pause_time)

	#伤害跳字
	character_to.show_hit_damage(damage)

	#状态跳字
	if is_break_shield: character_to.show_hit_text("Break")
	elif is_break_stun: character_to.show_hit_text("Stun")
	elif not is_break_skill: character_to.show_hit_text("Block")

	hit_result.is_break = is_break_skill
	return hit_result


func add_hp(value: float) -> void:
	if status.is_dead:
		return
	var hp     = character.get_status("hp")
	var hp_max = character.get_status("hp_max")
	character.set_status("hp", min(hp_max, hp+value))


func add_mp_sub(value: float, from_battle: bool):
	var mp         = character.get_status("mp")
	var mp_max     = character.get_status("mp_max")
	var mp_sub     = character.get_status("mp_sub")
	var mp_sub_max = character.get_status("mp_sub_max")

	value = min(mp_sub_max-mp_sub, value)
	var mp_sub_full = value == mp_sub_max-mp_sub
	var mp_full     = mp == mp_max
	if mp_sub_full:
		#mp_sub已满
		if mp_full:
			#mp已满
			character.set_status("mp_sub", mp_sub_max)
			character.remove_buff("mp_recover_cd")
			character.remove_buff("mp_recover")
		else:
			#mp未满
			character.set_status("mp", mp+1)
			character.set_status("mp_sub", 0)
	else:
		character.set_status("mp_sub", max(mp_sub+value, 0))

	if from_battle:
		character.remove_buff("mp_recover")
		character.add_buff("mp_recover_cd", status.cfg.mp.recover_cd)


func cost_mp(value: int):
	var mp     = character.get_status("mp")
	var mp_max = character.get_status("mp_max")
	var mp_new = mp-value
	mp_new = min(mp_new, mp_max)
	mp_new = max(mp_new, 0)
	character.set_status("mp", mp_new)
	character.remove_buff("mp_recover")
	character.add_buff("mp_recover_cd", status.cfg.mp.recover_cd)


func cost_mp_sub():
	character.set_status("mp_sub", 0)
	character.remove_buff("mp_recover")
	character.add_buff("mp_recover_cd", status.cfg.mp.recover_cd)


func check_ground(): skill.on_check_ground(0)


func check_ground1(): skill.on_check_ground(1)


func check_ground2(): skill.on_check_ground(2)


func check_charging1(): skill.on_check_charging(1)


func check_charging2(): skill.on_check_charging(2)


func check_charging3(): skill.on_check_charging(3)


func cast_sub_character(): skill.on_cast_sub_character()


func hold(): skill.on_hold()


func stop():
	move.stop()


func change_dir() -> void:
	var cast_dir: Vector2 = status.move_dir
	var target: Character = Global.character_mgr.get_character(status.target)
	if target:
		cast_dir = target.pos2D() - character.pos2D()
	status.skill_dir = cast_dir.normalized()
	status.is_right = cast_dir.x > 0


func on_attack_hit(hit_result: Struct.HitResultInfo) -> void:
	if not status.skill_cfg:
		return
	var skill_name: String = status.skill_cfg.get_res_name()
	on_skill_trigger(skill_name, "hit")
	if hit_result.is_break:
		on_skill_trigger(skill_name, "hit_break")


func on_skill_release(skill_name: String) -> void:
	on_skill_trigger(skill_name, "release")


func on_skill_cast(skill_name: String) -> void:
	on_skill_trigger(skill_name, "cast")


func on_skill_trigger(skill_name: String, trigger_name: String) -> void:
	var func_name: String = "on_%s_%s" % [skill_name, trigger_name]
	if has_method(func_name):
		call(func_name)


#====skill_trigger====

func on_hero01_long_stab01_cast():
	if status.skill_repeat_count >= 5:
		skill.cast_skill_by_name("hero01_long_stab02", status.move_dir)


func on_hero01_fist_skill01_hit_break():
	var target: int = status.throw_target
	skill.cast_skill_by_name("hero01_fist_skill01_add", status.move_dir)
	status.throw_target = target


func on_hero01_fist_air_skill_charging_hit():
	status.stance = Enum.EStance.SpecialFist


func on_hero01_fist_skill_charging_release():
	match status.charging_level:
		0: skill.cast_skill_by_name("hero01_fist_skill_charging01", status.move_dir)
		_: skill.cast_skill_by_name("hero01_fist_skill_charging02", status.move_dir)

func on_hero01_soul_slash_cast():
	if not status.sub_character_id:
		return
	var sub_char: Character = Global.character_mgr.get_character(status.sub_character_id)
	if not sub_char:
		return
	sub_char.set_pos(character.pos())
	var skill_cfg = skill.get_skill_by_name("hero01_long_skill01")
	if not skill_cfg:
		return
	sub_char.cast_skill(skill_cfg, status.skill_move_dir)