import Bot from "../../Game/Bot";
import PIFS from "../../PIFS";
import MatchView from "../../Views/MatchView";
import { JCMGO } from "../Core/JCMGO";

/**
 * 游戏逻辑系统（游戏逻辑和显示分离）
 */
export default class GameSystem {
    public masterId: number = -1;
    public playerInfos: Map<number, any>;
    public boys: BoyEntity[] = [];
    public countDown: number = 120 * 1000;
    public isGameStart: boolean = false;
    public isGameOver: boolean = false;

    public onRoomAddPlayer(e: JCMGO.RoomAddPlayerBst) {
        if (e.isSelf) {
            this.masterId = e.playerIndex;
            console.log("i join room, playerIndex:", e.playerIndex);
        } else {
            console.log("other join room, playerIndex:", e.playerIndex);
        }
    }

    public onRoomRemovePlayer(e: JCMGO.RoomRemovePlayerBst) {
        if (e.isSelf) {
            console.log("i leave room, playerIndex:", e.playerIndex);
            return;
        }
        console.log("other leave room, playerIndex:", e.playerIndex);
        let playerId = e.playerIndex;
        this.playerInfos[playerId] = null;
        //如果我现在是机器人支持者，将对（离开的玩家角色，机器人角色）检测并添加机器人脚本
        if (this.isGameStart && this.isBotSupporter()) {
            window.gm.boys.forEach(boy => {
                if (!this.playerInfos[boy.index]) {
                    if (!boy.getComponent(Bot)) boy.addComponent(Bot);
                }
            });
        }
    }

    public completeMatching(e: JCMGO.RoomEndMatchingBst) {
        this.playerInfos = e.roomInfo.playerInfos;
        PIFS.setMatchPlayerInfos(e.roomInfo.playerInfos, e.timestamp);
        MatchView.handleMatchSuccess();
    }

    public startGame() {
        this.isGameStart = true;
        this._createBoys();
        window.gm.createBoys();
        if (MatchView.Instance) MatchView.Instance.close();
        cc.find("Canvas/BgMusic").getComponent(cc.AudioSource).enabled = true;
    }

    public handleFrame(frame: JCMGO.Frame) {
        if (frame.inputs instanceof Array) {
            for (let input of frame.inputs as any[]) {
                if (input.t === 1) {
                    this._handleBoyState(input);
                    continue;
                }
                if (input.t === 2) {
                    this._handleBoyBeKilled(input);
                    continue;
                }
            }
        }
        this._handleTimePass(frame.dt);
    }

    /**帧同步处理-角色状态 */
    private _handleBoyState(input) {
        let id = input.id;
        let boy = this.boys.find(boy => boy.id === id);
        if (boy) {
            boy.position = cc.v2(parseFloat(input.x), parseFloat(input.y));
            boy.angle = parseFloat(input.a);
            boy.scaleX = parseFloat(input.sx);
        }
    }

    /**帧同步处理-角色被杀 */
    private _handleBoyBeKilled(input) {
        let id = input.id;
        let killerId = input.ki;
        let deadPosition = cc.v2(parseFloat(input.x), parseFloat(input.y));
        let boy = this.boys.find(boy => boy.id === id);
        if (killerId === 100 && !boy.dead) { //被大锯子杀死
            boy.dead = true;
            boy.deadPosition = deadPosition;
            if (this._isOnlyOneAlive()) this._setGameOver();
        } else { //被其他角色杀死
            let killer = this.boys.find(boy => boy.id === killerId);
            if (!killer.dead && !boy.dead) {
                boy.dead = true;
                boy.deadPosition = deadPosition;
                if (this._isOnlyOneAlive()) this._setGameOver();
            }
        }
    }

    /**帧同步处理-时间流逝 */
    private _handleTimePass(dt: number) {
        if (this.isGameOver) return;
        this.countDown -= dt;
        if (this.countDown <= 0) {
            this.countDown = 0;
            this._setGameOver();
        }
    }

    /**我是不是机器人支持者 */
    public isBotSupporter() {
        for (let i = 0; i < this.masterId; i++) {
            if (this.playerInfos[i]) return false;
        }
        //房间内没有id比我小的玩家时，我才会成为机器人支持者
        return true;
    }

    /**创建游戏角色 */
    private _createBoys() {
        for (let i = 0; i < 4; i++) {
            let boy = new BoyEntity();
            boy.id = i;
            let box = window.gcr.boxs[i];
            boy.position = box.position.add(cc.v2(0, box.height/2+10));
            boy.angle = 0;
            boy.scaleX = 1.8;
            boy.dead = false;
            this.boys.push(boy);
        }
    }
    
    /**是不是只有一个人活着 */
    private _isOnlyOneAlive() {
        let aliveCount = 0;
        this.boys.forEach(boy => {
            if (!boy.dead) aliveCount++; 
        });
        return aliveCount === 1;
    }

    /**设置游戏结束 */
    private _setGameOver() {
        if (this.isGameOver) return;
        this.isGameOver = true;
        window.gm.gameOver(this.boys.find(v => !v.dead).id);
    }
}
class BoyEntity {
    id: number;
    position: cc.Vec2;
    angle: number;
    scaleX: number;
    dead: boolean;
    deadPosition: cc.Vec2;
}