new (function() {
    var self = this;
 
    this.calculateDistance2D = function(p, q) {
        var dx = p.x - q.x;        
        var dy = p.y - q.y;        
        var dist = Math.sqrt(dx*dx + dy*dy);
        return dist;
    };
 
    this.getOtherById = function(id) {
        for (var i in g.other) {
            if (g.other[i].id == id) {
                return g.other[i];
            }
        }
        return false;
    };
 
    this.isNearHero = function(other) {
        if (!hero.x || !other.x) {
            return true;
        }
        var p = {
            x: hero.x,
            y: hero.y
        }
        var x = {
            x: other.x,
            y: other.y
        }
        for (var n in g.npc) {
            if(g.npc[n].wt > 79) {
                var q = {
                    x: g.npc[n].x,
                    y: g.npc[n].y
                }
                if (self.calculateDistance2D(p, q) <= 9 || self.calculateDistance2D(x, q) <= 9) {
                    return true;
                }
            }
        }
        return false;
    };
 
    this.isBrutalPvpTime = function() {
        var time = new Date().toLocaleString("en-US", {timeZone: "Europe/Warsaw"});
        time = new Date(time);
        let hours = time.getHours();
        let mins = time.getMinutes();
        if ((hours >= 23 || hours <= 6) && mins > 0) {
            return true;
        }
        return false;
    };
 
    this.canAttack = function(task) {
        let args = task.split('&');
        for (var i in args) {
            if (args[i].startsWith("id")) {
                let otherArgs = args[i].split("=");
                if (!otherArgs[1].startsWith("-")) {
                    let id = parseInt(otherArgs[1]);
                    if (id) {
                        let other = self.getOtherById(id);
                        if (other.nick === undefined || hero.nick === undefined) {
                            message("Wystąpił dziwny błąd w dodatku z blokadą ataku.");
                            return false;
                        }  
                        if (g.party[hero.id] !== undefined && g.party[hero.id] != false) {
                            message(`<span style="color: #ad0202;">Nie bij tej osoby jebany debilu!</span>`);
                            return false;
                        }
                        let maxLevelAdvantage = self.isNearHero(other) ? 5 : 25;
                        if ((other.lvl > hero.lvl) || (hero.lvl - other.lvl) <= maxLevelAdvantage) {
                            return true;
                        }
                    }
                } else {
                    return true;
                }
            }
        }
        return false;
    };
 
    (function(game) {
        _g = function(a, d) {
            if (a !== undefined && /fight&a=attack/.test(a)) {
                if (!self.isBrutalPvpTime() && !self.canAttack(a)) {
                    message(`<span style="color: #ad0202;">Nie możesz zaatakować tej osoby!</span>`);
                    return;
                }
            }
            game(a, d);
        };
    })(_g);
})();