import { getHeroStatusOf, getHeroStatusOn } from '../state/hero';
import { Range, ensureArray, has, manhattan } from '@user/data-utils';
import EventEmitter from 'eventemitter3';
import { hook } from '@user/data-base';
import { HeroSkill, NightSpecial } from '../mechanism/misc';
import {
    EnemyInfo,
    DamageInfo,
    DamageDelta,
    HaloData,
    CriticalDamageDelta,
    MapDamage,
    HaloFn,
    IEnemyCollection,
    IDamageEnemy,
    HaloType
} from '@motajs/types';

// todo: 光环划分优先级，从而可以实现光环的多级运算

export interface UserEnemyInfo extends EnemyInfo {
    togetherNum?: number;
}

/** 光环属性 */
export const haloSpecials: Set<number> = new Set([
    8, 21, 25, 26, 27, 29, 31, 32
]);
/** 不可被同化的属性 */
export const unassimilatable: Set<number> = new Set(haloSpecials);
unassimilatable.add(8).add(30).add(33);
/** 特殊属性对应 */
export const specialValue: Map<number, SelectKey<Enemy, number | undefined>[]> =
    new Map();
specialValue
    .set(1, ['crit'])
    .set(6, ['n'])
    .set(7, ['hungry'])
    .set(8, ['together'])
    .set(10, ['courage'])
    .set(11, ['charge'])
    .set(15, ['value'])
    .set(18, ['value'])
    .set(20, ['ice'])
    .set(21, ['iceHalo'])
    .set(22, ['night'])
    .set(23, ['day'])
    .set(25, ['melt'])
    .set(26, ['iceCore'])
    .set(27, ['fireCore'])
    .set(28, ['paleShield'])
    .set(31, ['hpHalo'])
    .set(32, ['assimilateRange']);

interface EnemyCollectionEvent {
    extract: [];
    calculated: [];
}

export class EnemyCollection
    extends EventEmitter<EnemyCollectionEvent>
    implements IEnemyCollection
{
    floorId: FloorIds;
    list: Map<number, DamageEnemy> = new Map();

    range: Range = new Range();
    /** 地图伤害 */
    mapDamage: Record<string, MapDamage> = {};
    haloList: HaloData[] = [];

    /** 楼层宽度 */
    width: number = 0;
    /** 楼层高度 */
    height: number = 0;

    /** 乾坤挪移属性 */
    translation: [number, number] = [0, 0];

    constructor(floorId: FloorIds) {
        super();
        this.floorId = floorId;
        this.extract();
    }

    get(x: number, y: number) {
        const index = x + y * this.width;
        return this.list.get(index) ?? null;
    }

    /**
     * 解析本地图的怪物信息
     */
    extract() {
        this.list.clear();
        core.extractBlocks(this.floorId);
        const floor = core.status.maps[this.floorId];
        this.width = floor.width;
        this.height = floor.height;
        floor.blocks.forEach(v => {
            if (v.disable) return;
            if (v.event.cls !== 'enemy48' && v.event.cls !== 'enemys') return;
            const { x, y } = v;
            const index = x + y * this.width;
            const enemy = core.material.enemys[v.event.id as EnemyIds];
            this.list.set(
                index,
                new DamageEnemy(enemy, v.x, v.y, this.floorId, this)
            );
        });
        this.emit('extract');
        hook.emit('enemyExtract', this);
    }

    /**
     * 计算怪物真实属性
     */
    calRealAttribute() {
        this.haloList = [];
        this.translation = [0, 0];
        this.list.forEach(v => {
            v.reset();
        });
        this.list.forEach(v => {
            v.preProvideHalo();
        });
        this.list.forEach(v => {
            v.calAttribute();
            v.provideHalo();
        });
        this.list.forEach(v => {
            v.getRealInfo();
        });
    }

    /**
     * 计算怪物伤害
     * @param noCache 是否不使用缓存
     */
    calDamage(noCache: boolean = false) {
        if (noCache) this.calRealAttribute();
        this.list.forEach(v => {
            v.calDamage(void 0);
        });
    }

    /**
     * 计算地图伤害
     */
    calMapDamage() {
        this.mapDamage = {};
        const hero = getHeroStatusOn(realStatus, this.floorId);
        this.list.forEach(v => {
            v.calMapDamage(this.mapDamage, hero);
        });
    }

    /**
     * 向怪物施加光环
     * @param type 光环的范围类型
     * @param data 光环范围信息
     * @param halo 光环效果函数
     * @param recursion 是否递归施加，只有在光环预平衡阶段会使用到
     */
    applyHalo<K extends keyof HaloType>(
        type: K,
        data: HaloType[K],
        enemy: DamageEnemy,
        halo: HaloFn | HaloFn[],
        recursion: boolean = false
    ) {
        const arr = ensureArray(halo);
        const enemys = this.range.type(type).scan(this.list.values(), data);
        if (!recursion) {
            arr.forEach(v => {
                enemys.forEach(e => {
                    e.injectHalo(v, enemy.info);
                });
            });
        } else {
            enemys.forEach(e => {
                arr.forEach(v => {
                    e.injectHalo(v, enemy.info);
                    e.preProvideHalo();
                });
            });
        }
    }

    /**
     * 预平衡光环
     */
    preBalanceHalo() {
        this.list.forEach(v => {
            v.preProvideHalo();
        });
    }
}

export class DamageEnemy implements IDamageEnemy {
    id: EnemyIds;
    x?: number;
    y?: number;
    floorId?: FloorIds;
    enemy: Enemy;
    col?: EnemyCollection;

    /**
     * 怪物属性。
     * 属性计算流程：预平衡光环(即计算加光环的光环怪的光环) -> 计算怪物在没有光环下的属性
     * -> provide inject 光环 -> 计算怪物的光环加成 -> 计算完毕
     */
    info!: UserEnemyInfo;

    /** 向其他怪提供过的光环 */
    providedHalo: Set<number> = new Set();

    /**
     * 伤害计算进度，0 -> 预平衡光环 -> 1 -> 计算没有光环的属性 -> 2 -> provide inject 光环
     * -> 3 -> 计算光环加成 -> 4 -> 计算完毕
     */
    progress: number = 0;

    constructor(
        enemy: Enemy,
        x?: number,
        y?: number,
        floorId?: FloorIds,
        col?: EnemyCollection
    ) {
        this.id = enemy.id;
        this.enemy = enemy;
        this.x = x;
        this.y = y;
        this.floorId = floorId;
        this.col = col;
        this.reset();
    }

    reset() {
        const enemy = this.enemy;
        this.info = {
            hp: enemy.hp,
            atk: enemy.atk,
            def: enemy.def,
            special: new Set(enemy.special),
            damageDecline: 0,
            atkBuff_: 0,
            defBuff_: 0,
            hpBuff_: 0,
            enemy: this.enemy,
            x: this.x,
            y: this.y,
            floorId: this.floorId
        };

        for (const [key, value] of Object.entries(enemy)) {
            if (!(key in this.info) && has(value)) {
                // @ts-ignore
                this.info[key] = value;
            }
        }
        this.progress = 0;
        this.providedHalo.clear();

        // 在这里计算乾坤挪移
        if (this.col && enemy.special.includes(30)) {
            this.col.translation[0] += enemy.translation![0];
            this.col.translation[1] += enemy.translation![1];
        }
    }

    /**
     * 计算怪物在不计光环下的属性，在inject光环之前，预平衡光环之后执行
     */
    calAttribute() {
        if (this.progress !== 1 && has(this.x) && has(this.floorId)) return;
        this.progress = 2;
        const special = this.info.special;
        const info = this.info;
        const floorId = this.floorId ?? core.status.floorId;
        let [dx, dy] = [0, 0];
        const col = this.col ?? core.status.maps[this.floorId!]?.enemy;
        if (col) {
            [dx, dy] = col.translation;
        }

        // 智慧之源
        if (flags.hard === 2 && special.has(14)) {
            info.atk += flags[`inte_${floorId}`] ?? 0;
        }

        // 极昼永夜
        const night = NightSpecial.getNight(floorId);
        info.atk -= night;
        info.def -= night;

        // 融化，融化不属于怪物光环，因此不能用provide和inject计算，需要在这里计算
        const melt = flags[`melt_${floorId}`];
        if (has(melt) && has(this.x) && has(this.y)) {
            for (const [loc, per] of Object.entries(melt)) {
                const [mx, my] = loc.split(',').map(v => parseInt(v));
                if (
                    Math.abs(mx + dx - this.x) <= 1 &&
                    Math.abs(my + dy - this.y) <= 1
                ) {
                    info.atkBuff_ += per as number;
                    info.defBuff_ += per as number;
                }
            }
        }
    }

    /**
     * 获取怪物的真实属性信息，在inject光环后执行
     */
    getRealInfo() {
        if (this.progress < 3 && has(this.x) && has(this.floorId)) {
            throw new Error(
                `Unexpected early real info calculating. Progress: ${this.progress}`
            );
        }
        if (this.progress === 4) return this.info;
        this.progress = 4;

        // 此时已经inject光环，因此直接计算真实属性
        const info = this.info;

        if (info.special.has(33)) {
            const count = this.col?.list.size ?? 0;
            const [hp, atk, def] = this.enemy.horn ?? [0, 0, 0];
            info.hpBuff_ += hp * count;
            info.atkBuff_ += atk * count;
            info.defBuff_ += def * count;
        }

        info.atk = Math.floor(info.atk * (info.atkBuff_ / 100 + 1));
        info.def = Math.floor(info.def * (info.defBuff_ / 100 + 1));
        info.hp = Math.floor(info.hp * (info.hpBuff_ / 100 + 1));

        return this.info;
    }

    getHaloSpecials(): Set<number> {
        if (!this.floorId) return new Set();
        if (!has(this.x) || !has(this.y)) return new Set();
        const special = this.info.special ?? this.enemy.special;
        const res = new Set<number>();
        special.forEach(v => {
            if (haloSpecials.has(v) && !this.providedHalo.has(v)) {
                res.add(v);
            }
        });
        return res;
    }

    /**
     * 光环预提供，用于平衡所有怪的光环属性，避免出现不同情况下光环效果不一致的现象
     */
    preProvideHalo() {
        if (this.progress !== 0) return;
        this.progress = 1;
        if (!this.floorId) return;
        if (!has(this.x) || !has(this.y)) return;
        const special = this.getHaloSpecials();
        const col = this.col ?? core.status.maps[this.floorId!].enemy;
        let [dx, dy] = [0, 0];
        if (col) [dx, dy] = col.translation;

        // e 是被加成怪的属性，enemy 是施加光环的怪

        for (const halo of special) {
            switch (halo) {
                case 29: {
                    // 特殊光环
                    const e = this.enemy;
                    const type = 'square';
                    const r = Math.floor(e.haloRange!);
                    const d = r * 2 + 1;
                    const range = { x: this.x + dx, y: this.y + dy, d };

                    // 这一句必须放到applyHalo之前
                    this.providedHalo.add(29);
                    const halo = (e: UserEnemyInfo, enemy: UserEnemyInfo) => {
                        const s = enemy.specialHalo!;

                        for (const spe of s) {
                            e.special.add(spe);
                        }
                        // 如果是自身，就不进行特殊属性数值处理了
                        if (e === this.info) return;
                        // 然后计算特殊属性数值
                        for (const spec of s) {
                            // 如果目标怪物拥有杀戮光环，且光环会加成此属性，则忽略
                            if (e.specialHalo?.includes(spec)) continue;
                            const toChange = specialValue.get(spec);
                            if (!toChange) continue;
                            for (const key of toChange) {
                                // 这种光环应该获取怪物的原始数值，而不是真实数值
                                if (enemy.enemy.specialMultiply) {
                                    e[key] ??= 1;
                                    e[key] *= enemy[key] ?? 1;
                                } else {
                                    e[key] ??= 0;
                                    e[key] += enemy[key] ?? 0;
                                }
                            }
                        }
                    };

                    col.applyHalo(type, range, this, halo, true);
                    col.haloList.push({
                        type: 'square',
                        data: { x: this.x + dx, y: this.y + dy, d },
                        special: 29,
                        from: this
                    });
                }
            }
        }
    }

    /**
     * 向其他怪提供光环
     */
    provideHalo() {
        if (this.progress !== 2) return;
        this.progress = 3;
        if (!this.floorId) return;
        if (!has(this.x) || !has(this.y)) return;
        const col = this.col ?? core.status.maps[this.floorId].enemy;
        if (!col) return;
        const special = this.getHaloSpecials();
        const [dx, dy] = col.translation;

        const square7: HaloFn[] = [];
        const square5: HaloFn[] = [];

        // e 是被加成怪的属性，enemy 是施加光环的怪

        // 抱团
        if (special.has(8)) {
            col.applyHalo(
                'square',
                { x: this.x, y: this.y, d: 5 },
                this,
                (e: UserEnemyInfo, enemy) => {
                    if (
                        e.special.has(8) &&
                        (e.x !== this.x || this.y !== e.y)
                    ) {
                        e.atkBuff_ += enemy.together ?? 0;
                        e.defBuff_ += enemy.together ?? 0;
                        e.togetherNum ??= 0;
                        e.togetherNum++;
                    }
                }
            );
            this.providedHalo.add(8);
        }

        // 冰封光环
        if (special.has(21)) {
            square7.push(e => {
                e.damageDecline += this.info.iceHalo ?? 0;
            });
            this.providedHalo.add(21);
            col.haloList.push({
                type: 'square',
                data: { x: this.x + dx, y: this.y + dy, d: 7 },
                special: 21,
                from: this
            });
        }

        // 冰封之核
        if (special.has(26)) {
            square5.push(e => {
                e.defBuff_ += this.info.iceCore ?? 0;
            });
            this.providedHalo.add(26);
            col.haloList.push({
                type: 'square',
                data: { x: this.x + dx, y: this.y + dy, d: 5 },
                special: 26,
                from: this
            });
        }

        // 火焰之核
        if (special.has(27)) {
            square5.push(e => {
                e.atkBuff_ += this.info.fireCore ?? 0;
            });
            this.providedHalo.add(27);
            col.haloList.push({
                type: 'square',
                data: { x: this.x + dx, y: this.y + dy, d: 5 },
                special: 27,
                from: this
            });
        }

        // 再生光环
        if (special.has(31)) {
            square7.push(e => {
                e.hpBuff_ += this.info.hpHalo ?? 0;
            });
            this.providedHalo.add(31);
            col.haloList.push({
                type: 'square',
                data: { x: this.x + dx, y: this.y + dy, d: 7 },
                special: 31,
                from: this
            });
        }

        // 同化，它不会被光环类属性影响，因此放到这
        if (special.has(32)) {
            const e = this.info;
            const type = 'square';
            const r = Math.floor(e.assimilateRange!);
            const d = r * 2 + 1;
            const range = { x: this.x, y: this.y, d };

            col.applyHalo(type, range, this, (e, enemy) => {
                // 如果是自身，就不进行特殊属性数值处理了
                if (e === this.info) return;
                const s = e.special;

                for (const spe of s) {
                    if (unassimilatable.has(spe)) continue;
                    enemy.special.add(spe);
                }
                // 然后计算特殊属性数值
                for (const spec of s) {
                    if (unassimilatable.has(spec)) continue;
                    const toChange = specialValue.get(spec);
                    if (!toChange) continue;
                    for (const key of toChange) {
                        // 这种光环应该获取怪物的原始数值，而不是真实数值
                        if (enemy.enemy.specialMultiply) {
                            enemy[key] ??= 1;
                            enemy[key] *= e[key] ?? 1;
                        } else {
                            enemy[key] ??= 0;
                            enemy[key] += e[key] ?? 0;
                        }
                    }
                }
            });

            col.haloList.push({
                type: 'square',
                data: range,
                special: 32,
                from: this
            });
        }

        col.applyHalo(
            'square',
            { x: this.x + dx, y: this.y + dy, d: 7 },
            this,
            square7
        );
        col.applyHalo(
            'square',
            { x: this.x + dx, y: this.y + dy, d: 5 },
            this,
            square5
        );
    }

    /**
     * 接受其他怪的光环
     */
    injectHalo(halo: HaloFn, enemy: UserEnemyInfo) {
        halo(this.info, enemy);
    }

    /**
     * 计算怪物伤害
     */
    calDamage(hero: Partial<HeroStatus> = core.status.hero) {
        // todo: 缓存怪物伤害
        const enemy = this.getRealInfo();
        return this.calEnemyDamageOf(hero, enemy);
    }

    /**
     * 计算地图伤害
     * @param damage 存入的对象
     */
    calMapDamage(
        damage: Record<string, MapDamage> = {},
        hero: Partial<HeroStatus> = getHeroStatusOn(realStatus)
    ) {
        if (!has(this.x) || !has(this.y) || !has(this.floorId)) return damage;
        const enemy = this.enemy;
        const floor = core.status.maps[this.floorId];
        const w = floor.width;
        const h = floor.height;

        // 突刺
        if (this.info.special.has(15)) {
            const range = enemy.range ?? 1;
            const startX = Math.max(0, this.x - range);
            const startY = Math.max(0, this.y - range);
            const endX = Math.min(floor.width - 1, this.x + range);
            const endY = Math.min(floor.height - 1, this.y + range);
            const dam = Math.max((enemy.value ?? 0) - hero.def!, 0);
            const objs = core.getMapBlocksObj(this.floorId);

            for (let x = startX; x <= endX; x++) {
                for (let y = startY; y <= endY; y++) {
                    if (
                        !enemy.zoneSquare &&
                        manhattan(x, y, this.x, this.y) > range
                    ) {
                        continue;
                    }
                    const loc = `${x},${y}` as LocString;
                    if (objs[loc]?.event.noPass) continue;
                    this.setMapDamage(damage, loc, dam, '突刺');
                }
            }
        }

        // 射击
        if (this.info.special.has(24)) {
            const dirs: Dir[] = ['left', 'down', 'up', 'right'];
            const dam = Math.max((enemy.atk ?? 0) - hero.def!, 0);
            const objs = core.getMapBlocksObj(this.floorId);

            for (const dir of dirs) {
                let x = this.x;
                let y = this.y;
                const { x: dx, y: dy } = core.utils.scan[dir];
                while (x >= 0 && y >= 0 && x < w && y < h) {
                    x += dx;
                    y += dy;
                    const loc = `${x},${y}` as LocString;
                    const block = objs[loc];
                    if (
                        block &&
                        block.event.noPass &&
                        block.event.cls !== 'enemys' &&
                        block.id !== 141 &&
                        block.id !== 151
                    ) {
                        break;
                    }
                    this.setMapDamage(damage, loc, dam, '射击');
                }
            }
        }

        // 电摇嘲讽
        if (this.info.special.has(19)) {
            const objs = core.getMapBlocksObj(this.floorId);
            for (let nx = 0; nx < w; nx++) {
                const loc = `${nx},${this.y}` as LocString;
                const block = objs[loc];
                if (!block?.event.noPass) {
                    damage[loc] ??= { damage: 0, type: new Set() };
                    damage[loc].mockery ??= [];
                    damage[loc].mockery!.push([this.x, this.y]);
                }
            }
            for (let ny = 0; ny < h; ny++) {
                const loc = `${this.x},${ny}` as LocString;
                const block = objs[loc];
                if (!block?.event.noPass) {
                    damage[loc] ??= { damage: 0, type: new Set() };
                    damage[loc].mockery ??= [];
                    damage[loc].mockery!.push([this.x, this.y]);
                }
            }
        }

        // 追猎
        if (this.info.special.has(12)) {
            const objs = core.getMapBlocksObj(this.floorId);
            for (let nx = 0; nx < w; nx++) {
                const loc = `${nx},${this.y}` as LocString;
                const block = objs[loc];
                if (!block?.event.noPass) {
                    damage[loc] ??= { damage: 0, type: new Set() };
                    damage[loc].hunt ??= [];
                    damage[loc].hunt!.push([
                        this.x,
                        this.y,
                        nx < this.x ? 'left' : 'right'
                    ]);
                }
            }
            for (let ny = 0; ny < h; ny++) {
                const loc = `${this.x},${ny}` as LocString;
                const block = objs[loc];
                if (!block?.event.noPass) {
                    damage[loc] ??= { damage: 0, type: new Set() };
                    damage[loc].hunt ??= [];
                    damage[loc].hunt!.push([
                        this.x,
                        this.y,
                        ny < this.y ? 'up' : 'down'
                    ]);
                }
            }
        }

        return damage;
    }

    private setMapDamage(
        damage: Record<string, MapDamage>,
        loc: string,
        dam: number,
        type: string
    ) {
        damage[loc] ??= { damage: 0, type: new Set() };
        damage[loc].damage += dam;
        if (type) damage[loc].type.add(type);
    }

    private calEnemyDamageOf(hero: Partial<HeroStatus>, enemy: UserEnemyInfo) {
        const status = getHeroStatusOf(hero, realStatus, this.floorId);
        let damage = calDamageWith(enemy, status) ?? Infinity;
        let bestSkill = -1;

        // 自动切换技能
        if (HeroSkill.getAutoSkill()) {
            for (const skill of skills) {
                if (!HeroSkill.learnedSkill(skill)) continue;
                HeroSkill.enableSkill(skill);
                const status = getHeroStatusOf(hero, realStatus);

                const d = calDamageWith(enemy, status) ?? Infinity;

                if (d < damage) {
                    damage = d;
                    bestSkill = skill;
                }
                HeroSkill.disableSkill();
            }
        }

        return { damage, skill: bestSkill };
    }

    /**
     * 计算怪物临界，计算临界时，根据当前方向计算临界，但也会输出与当前最少伤害的伤害差值
     * @param num 要计算多少个临界
     * @param dir 从怪物位置指向勇士的方向
     * @param hero 勇士属性，最终结果将会与由此属性计算出的伤害相减计算减伤
     */
    calCritical(
        num: number = 1,
        hero: Partial<HeroStatus> = core.status.hero
    ): CriticalDamageDelta[] {
        // todo: 缓存临界
        const origin = this.calDamage(hero);
        const seckill = this.getSeckillAtk();
        return this.calCriticalWith(num, seckill, origin, hero);
    }

    /**
     * 二分计算怪物临界
     * @param num 计算的临界数量
     * @param min 当前怪物伤害最小值
     * @param seckill 秒杀怪物时的攻击
     * @param hero 勇士真实属性
     */
    private calCriticalWith(
        num: number,
        seckill: number,
        origin: DamageInfo,
        hero: Partial<HeroStatus>
    ): CriticalDamageDelta[] {
        // todo: 可以优化，根据之前的计算可以直接确定下一个临界的范围
        if (!isFinite(seckill)) return [];

        const res: CriticalDamageDelta[] = [];
        const def = hero.def!;
        const precision =
            (seckill < Number.MAX_SAFE_INTEGER ? 1 : seckill / 1e15) * 2;
        const enemy = this.getRealInfo();

        let curr = hero.atk!;
        let start = curr;
        let end = seckill;
        let ori = origin.damage;

        const status = { atk: curr, def };

        const calDam = () => {
            status.atk = curr;
            return this.calEnemyDamageOf(status, enemy).damage;
        };

        let i = 0;
        while (res.length < num) {
            if (end - start <= precision) {
                // 到达二分所需精度，计算临界准确值
                let cal = false;
                for (const v of [(start + end) / 2, end]) {
                    curr = v;
                    const dam = calDam();
                    if (dam < ori) {
                        res.push({
                            damage: dam,
                            atkDelta: Math.ceil(v - hero.atk!),
                            delta: -(dam - origin.damage)
                        });

                        start = v;
                        end = seckill;
                        cal = true;
                        ori = dam;
                        break;
                    }
                }
                if (!cal) break;
            }
            curr = Math.floor((start + end) / 2);

            const damage = calDam();

            if (damage < ori) {
                end = curr;
            } else {
                start = curr;
            }
            if (i++ >= 10000) {
                console.warn(
                    `Unexpected endless loop in calculating critical.` +
                        `Enemy Id: ${this.id}. Loc: ${this.x},${this.y}. Floor: ${this.floorId}`
                );
                break;
            }
        }

        if (res.length === 0) {
            curr = hero.atk!;
            const dam = calDam();
            res.push({
                damage: dam,
                atkDelta: 0,
                delta: 0
            });
        }

        return res;
    }

    /**
     * 计算n防减伤
     * @param num 要加多少防御
     * @param dir 从怪物位置指向勇士的方向
     * @param hero 勇士属性，最终结果将会与由此属性计算出的伤害相减计算减伤
     */
    calDefDamage(
        num: number = 1,
        hero: Partial<HeroStatus> = core.status.hero
    ): DamageDelta {
        const damage = this.calDamage({
            def: (hero.def ?? core.status.hero.def) + num
        });
        const origin = this.calDamage(hero);
        const finite = isFinite(damage.damage);

        return {
            damage: damage.damage,
            info: damage,
            delta: -(finite ? damage.damage - origin.damage : Infinity)
        };
    }

    /**
     * 获取怪物秒杀时所需的攻击
     */
    getSeckillAtk(): number {
        const info = this.getRealInfo();
        const add = info.def + info.hp - core.status.hero.mana;

        // 坚固，不可能通过攻击秒杀
        if (info.special.has(3)) {
            return Infinity;
        }

        // 列方程求解，拿笔算一下就知道了
        // 饥渴，会偷取勇士攻击
        if (info.special.has(7)) {
            if (info.damageDecline === 0) {
                return add / (1 - this.enemy.hungry! / 100);
            } else {
                return (
                    (info.hp / (1 - info.damageDecline / 100) -
                        core.status.hero.mana +
                        info.def) /
                    (1 - this.enemy.hungry! / 100)
                );
            }
        }

        // 霜冻
        if (info.special.has(20) && !core.hasEquip('I589')) {
            return (
                info.def +
                info.hp / (1 - this.enemy.ice! / 100) -
                core.status.hero.mana
            );
        }

        if (info.damageDecline !== 0) {
            return (
                info.def +
                info.hp / (1 - info.damageDecline / 100) -
                core.status.hero.mana
            );
        } else {
            return add;
        }
    }
}

/**
 * 计算伤害时会用到的勇士属性，攻击防御，其余的不会有buff加成，直接从core.status.hero取
 */
const realStatus: (keyof HeroStatus)[] = [
    'atk',
    'def',
    'hpmax',
    'mana',
    'magicDef'
];
/**
 * 主动技能列表
 */
const skills: HeroSkill.Skill[] = [HeroSkill.Blade, HeroSkill.Shield];

/**
 * 计算怪物伤害
 * @param info 怪物信息
 * @param hero 勇士信息
 */
export function calDamageWith(
    info: UserEnemyInfo,
    hero: Partial<HeroStatus>
): number | null {
    const { hp, mdef } = core.status.hero;
    let { atk, def, hpmax, mana, magicDef } = hero as HeroStatus;
    let { hp: monHp, atk: monAtk, def: monDef, special, enemy } = info;

    // 赏金，优先级最高
    if (special.has(34)) return 0;

    hpmax = Math.min(hpmax, def / 10);

    let damage = 0;

    // 饥渴
    if (special.has(7)) {
        const delta = Math.floor((atk * info.hungry!) / 100);
        atk -= delta;
        monAtk += delta;
    }

    let heroPerDamage: number;

    // 绝对防御
    if (special.has(9)) {
        heroPerDamage = atk + mana - monDef;
        if (heroPerDamage <= 0) return null;
    } else if (special.has(3)) {
        // 由于坚固的特性，只能放到这来计算了
        if (atk > enemy.def) heroPerDamage = 1 + mana;
        else return null;
    } else {
        heroPerDamage = atk - monDef;
        if (heroPerDamage > 0) heroPerDamage += mana;
        else return null;
    }

    // 霜冻
    if (special.has(20) && !core.hasEquip('I589')) {
        heroPerDamage *= 1 - info.ice! / 100;
    }

    heroPerDamage *= 1 - info.damageDecline / 100;

    let enemyPerDamage: number;

    // 魔攻
    if (special.has(2) || special.has(13)) {
        enemyPerDamage = monAtk;
        enemyPerDamage -= magicDef;
    } else {
        enemyPerDamage = monAtk - def;
    }

    // 连击
    if (special.has(4)) enemyPerDamage *= 2;
    if (special.has(5)) enemyPerDamage *= 3;
    if (special.has(6)) enemyPerDamage *= info.n!;

    if (enemyPerDamage < 0) enemyPerDamage = 0;

    // 苍蓝刻
    if (special.has(28)) {
        heroPerDamage *= 1 - info.paleShield! / 100;
    }

    let turn = Math.ceil(monHp / heroPerDamage);

    // 致命一击
    if (special.has(1)) {
        const times = Math.floor(turn / 5);
        damage += ((times * (info.crit! - 100)) / 100) * enemyPerDamage;
    }

    // 勇气之刃
    if (turn > 1 && special.has(10)) {
        damage += (info.courage! / 100 - 1) * enemyPerDamage;
    }

    // 勇气冲锋
    if (special.has(11)) {
        damage += (info.charge! / 100) * enemyPerDamage;
        turn += 5;
    }

    // 先攻
    if (special.has(17)) {
        damage += enemyPerDamage;
    }

    damage += (turn - 1) * enemyPerDamage;
    // 无上之盾
    if (flags.superSheild) {
        damage -= mdef / 10;
    }
    // 生命回复
    damage -= hpmax * turn;
    if (flags.hard === 1) damage *= 0.9;

    if (flags.chapter > 1 && damage < 0) {
        const dm = -info.hp * 0.25;
        if (damage < dm) damage = dm;
    }

    return Math.floor(damage);
}

export function ensureFloorDamage(floorId: FloorIds) {
    const floor = core.status.maps[floorId];
    floor.enemy ??= new EnemyCollection(floorId);
}

export function getSingleEnemy(id: EnemyIds) {
    const e = core.material.enemys[id];
    const enemy = new DamageEnemy(e);
    enemy.calAttribute();
    enemy.getRealInfo();
    enemy.calDamage(core.status.hero);
    return enemy;
}

export function getEnemy(
    x: number,
    y: number,
    floorId: FloorIds = core.status.floorId
) {
    const enemy = core.status.maps[floorId].enemy.get(x, y);
    return enemy;
}

declare global {
    interface Floor {
        enemy: EnemyCollection;
    }
}