bl/logic/service/fight/input/fight.go

package input

import (
	element "blazing/common/data/Element"
	"blazing/common/utils"
	"blazing/logic/service/fight/info"
	"fmt"

	"github.com/shopspring/decimal"
)

func (u *Input) UseSkill(opp *Input, skill *info.SkillEntity) {

	skill.Crit = 0
	if skill.Category() == info.Category.STATUS { //属性技能不用算暴击
		return
	}
	CritRate := utils.Max(skill.CritRate, 1)

	//CritAtkFirst: 先出手时必定致命一击; 默认: 0
	if skill.CritAtkFirst != 0 && u.First {
		CritRate = 16
	}
	//CritAtkSecond: 后出手时必定致命一击; 默认: 0
	if skill.CritAtkSecond != 0 && !u.First {
		CritRate = 16
	}
	// CritSelfHalfHp: 自身体力低于一半时必定致命一击; 默认: 0
	if skill.CritSelfHalfHp != 0 && (u.CurrentPet.HP < int(u.CurrentPet.Info.MaxHp)/2) {
		CritRate = 16
	}
	//  CritFoeHalfHp: 对方体力低于一半时必定致命一击; 默认: 0
	if skill.CritSelfHalfHp != 0 && (opp.CurrentPet.HP < int(opp.CurrentPet.Info.MaxHp)/2) {
		CritRate = 16
	}

	//todo 暴击伤害
	if t, _, _ := u.Player.Roll(625*CritRate, 10000); t {
		skill.Crit = 1
	}

}

// 伤害落实  // 血量扣减节点比如触发回神，反弹也在这里实现
func (u *Input) Damage(ctx Ctx) {
	ctx.Input.DamageZone.BeforeADD = ctx.DamageZone.Damage
	ok := ctx.Input.Exec(func(t Effect) bool {

		t.Damage_ADD(ctx) //红伤落实前,我方增伤

		return true
	})

	ctx.Input.DamageZone.BeforeMul = ctx.DamageZone.Damage
	if ok {
		ok = ctx.Input.Exec(func(t Effect) bool {

			t.Damage_Mul(ctx) //红伤落实前,我方增伤

			return true
		})
	}

	ctx.Input.DamageZone.BeforeMul = ctx.DamageZone.Damage //反弹伤害记录
	if ok {
		ok = u.Exec(func(t Effect) bool {

			t.Damage_DIV(ctx) //红伤落实,内部有befer

			return true
		})
	}

	ctx.Input.DamageZone.BeforeSUB = ctx.DamageZone.Damage
	if ok {
		ok = u.Exec(func(t Effect) bool {

			t.Damage_SUB(ctx)

			return true
		})
	}

	ctx.Input.DamageZone.BeforeLock = ctx.DamageZone.Damage
	if ok {
		ok = u.Exec(func(t Effect) bool {

			t.Damage_Lock(ctx)

			return true
		})
	}

	if ctx.DamageZone.Type == info.DamageType.Red {
		ctx.AttackValue.LostHp = uint32(ctx.DamageZone.Damage.IntPart()) //红伤落实
	}

	if uint32(ctx.DamageZone.Damage.IntPart()) > u.CurrentPet.Info.Hp {

		u.CurrentPet.Info.Hp = 0
	} else {
		u.CurrentPet.Info.Hp = u.CurrentPet.Info.Hp - ctx.AttackValue.LostHp
	}

	//todo  待实现死亡effet

}

// 施加方，类型，等级，操作类别，是否成功
func (u *Input) SetProp(in *Input, prop, level int8, ptype info.EnumAbilityOpType) (ret bool) {
	canuseskill := u.Exec(func(t Effect) bool { //这个是能否使用技能
		//结算状态
		return t.Prop_Befer(in, prop, level, ptype) //返回本身结算,如果false,说明不能使用技能了

	})
	if !canuseskill {

		return false
	}
	var newValue int8
	abfunc := func(prop, level int8, ptype info.EnumAbilityOpType) (ret bool) {

		switch ptype {
		case info.AbilityOpType.ADD:
			newValue = utils.Min(u.AttackValue.Prop[prop]+int8(level), 6)

			if newValue > u.AttackValue.Prop[prop] {
				fmt.Println("属性值会增加")
				return true
			} else {
				fmt.Println("属性值不会增加")
				return false
			}

		case info.AbilityOpType.SUB:
			newValue = utils.Max(u.AttackValue.Prop[prop]+int8(level), -6)
			if newValue < u.AttackValue.Prop[prop] {
				fmt.Println("属性值会减少")
				return true
			} else {
				fmt.Println("属性值不会增加")
				return false
			}

		case info.AbilityOpType.RESET:
			if level > 0 && u.AttackValue.Prop[prop] > 0 { //消强
				newValue = 0
				return true

			}
			if level < 0 && u.AttackValue.Prop[prop] < 0 { //解弱
				newValue = 0
				return true
			}

		}

		return false
	}
	switch ptype {

	case info.AbilityOpType.AbilityOpStealStrengthen:

		temp := in.AttackValue.Prop[prop]

		if temp <= 0 { //对方没有强化
			return false
		}
		if abfunc(prop, temp, info.AbilityOpType.ADD) { //把对面的强化等级添加自身
			u.AttackValue.Prop[prop] = newValue              //成功把 强化更新
			in.SetProp(u, prop, 1, info.AbilityOpType.RESET) //吸取后消除对面强化

		}

	case info.AbilityOpType.AbilityOpReverse:
		temp := u.AttackValue.Prop[prop]

		switch {

		case level > 0: //反转强化
			if temp <= 0 { //没有强化
				return false
			}
			if abfunc(prop, temp*2, info.AbilityOpType.SUB) {
				u.AttackValue.Prop[prop] = newValue
				if temp == -u.AttackValue.Prop[prop] { //成功到对应弱化

					return true
				} else {
					return true

				}

			} else { //自身免弱或已到-6

				return false
			}
		default: //反转弱化
			if temp >= 0 { //没有弱化
				return false
			}
			if abfunc(prop, -temp*2, info.AbilityOpType.ADD) {
				u.AttackValue.Prop[prop] = newValue
				if temp == -u.AttackValue.Prop[prop] { //成功到对应强化

					return true
				} else {
					return true

				}

			} else { //自身免弱或已到-6

				return false
			}
		}

	case info.AbilityOpType.AbilityOpBounceWeaken:
		temp := u.AttackValue.Prop[prop]
		if temp >= 0 { //没有弱化
			return false
		}

		if in.SetProp(u, prop, temp, info.AbilityOpType.SUB) {

			u.SetProp(u, prop, -1, info.AbilityOpType.RESET) //消除自身弱化
			return true
		}
	default: //增加减少重置

		if abfunc(prop, level, ptype) {
			// 执行赋值
			u.AttackValue.Prop[prop] = newValue
			return true
		}

	}

	return false
}
func (i *Input) GetAction(opp *Input) {
	//使用1#技能,实际上要按照四个技能权重去使用
	i.FightC.UseSkill(i.Player, int32(i.FightC.GetCurrPET(i.Player).Skills[0].ID))

}

// 计算技能威力
func (i *Input) CalculatePower(deftype *Input, skill *info.SkillEntity) decimal.Decimal {

	// 1. 计算等级因子 (level * 0.4 + 2)
	levelFactor := decimal.NewFromInt(int64(i.CurrentPet.Info.Level)).
		Mul(decimal.NewFromFloat(0.4)).Add(decimal.NewFromInt(2))

	var (
		attackDec  decimal.Decimal //攻击值
		defenseDec decimal.Decimal //防御值

	)

	switch skill.Category() { //判断技能类型
	case info.Category.PHYSICAL:
		attackDec = decimal.NewFromInt(int64(i.GetProp(0, false)))
		defenseDec = decimal.NewFromInt(int64(deftype.GetProp(1, false)))

	case info.Category.SPECIAL:

		attackDec = decimal.NewFromInt(int64(i.GetProp(2, false)))
		defenseDec = decimal.NewFromInt(int64(deftype.GetProp(3, false)))

	default:
		return decimal.NewFromInt(0)
	}

	// 5. 基础伤害公式：等级因子 * 威力因子 * 攻击 / 防御 / 50 + 2
	baseDamage := levelFactor.
		Mul(decimal.NewFromInt(int64(skill.Power))).
		Mul(attackDec).
		Div(defenseDec).
		Div(decimal.NewFromInt(50)).
		Add(decimal.NewFromInt(2))

	var typeRate decimal.Decimal
	t, _ := element.NewElementCalculator().GetOffensiveMultiplier(skill.Type().ID, deftype.CurrentPet.Type().ID)

	typeRate = decimal.NewFromFloat(t)

	damage := baseDamage.
		Mul(skill.CriticalsameTypeBonus()). // 同属性加成
		Mul(typeRate).                      // 克制系数

		Mul(skill.Criticalrandom()) //随机波动

	return damage

}