snake-cli-ts/lib/core/Snake.js

Nodejs cli snake game

"use strict";
var __read = (this && this.__read) || function (o, n) {
    var m = typeof Symbol === "function" && o[Symbol.iterator];
    if (!m) return o;
    var i = m.call(o), r, ar = [], e;
    try {
        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
    }
    catch (error) { e = { error: error }; }
    finally {
        try {
            if (r && !r.done && (m = i["return"])) m.call(i);
        }
        finally { if (e) throw e.error; }
    }
    return ar;
};
var __spread = (this && this.__spread) || function () {
    for (var ar = [], i = 0; i < arguments.length; i++) ar = ar.concat(__read(arguments[i]));
    return ar;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var Point_1 = __importDefault(require("../helpers/Point"));
var Snake = (function () {
    function Snake(game) {
        this.game = game;
        this.x = 0;
        this.y = 0;
        this.dx = 0;
        this.dy = 0;
        this.lastDx = 0;
        this.lastDy = 0;
        this.body = [];
        this.lastBody = [];
        this.speed = 5;
        this.reset();
    }
    Snake.prototype.reset = function () {
        this.dx = 0;
        this.dy = 0;
        this.lastDx = 0;
        this.lastDy = 0;
        this.body = [];
        this.lastBody = [];
        this.x = Math.round(this.game.width / 2);
        this.y = Math.round(this.game.height / 2);
        this.body.push(new Point_1.default(this.x, this.y));
        this.speed =
            {
                easy: 5,
                medium: 10,
                hard: 15,
            }[this.game.get('difficulty')] || 5;
    };
    Snake.prototype.move = function () {
        var _a;
        this.x += this.dx;
        this.y += this.dy;
        (_a = this.game.foodManager.find(this.x, this.y)) === null || _a === void 0 ? void 0 : _a.use();
        if (this.game.config.moveThroughWall) {
            if (this.x === -1) {
                this.x = this.game.width - 1;
            }
            if (this.x === this.game.width) {
                this.x = 0;
            }
            if (this.y === this.game.height) {
                this.y = 0;
            }
            if (this.y === -1) {
                this.y = this.game.height - 1;
            }
        }
        this.lastBody = __spread(this.body);
        this.body.unshift(new Point_1.default(this.x, this.y));
        this.body.pop();
        this.lastDx = this.dx;
        this.lastDy = this.dy;
        return this;
    };
    Snake.prototype.eat = function (x, y) {
        this.body.push(new Point_1.default(x, y));
        return this;
    };
    Snake.prototype.collide = function (x, y) {
        return this.body.slice(1).find(function (p) { return p.x === x && p.y === y; });
    };
    Snake.prototype.isOutOfBox = function (x, y) {
        return x < 0 || x >= this.game.width || y < 0 || y >= this.game.height;
    };
    Snake.prototype.isDead = function () {
        if (this.collide(this.x, this.y)) {
            return true;
        }
        if (this.game.config.moveThroughWall === false && this.isOutOfBox(this.x, this.y)) {
            return true;
        }
        return false;
    };
    return Snake;
}());
exports.default = Snake;