Attribute system

enum operator{
    add,
    base_mult,
    mult
}


function Attribute(_default) constructor{
    base = _default;
    minimum = -infinity;
    maximum = infinity
    modifiers = [[],[],[]];
    calculated = false;
    calculated_value = 0;

    get_value = function(){
        if !calculated{
            calculate_value();
        }

        return calculated_value;
    }

    //TODO
    //variable_name = _variable_name;
    //apply = function(){
    //  variable_instance_set(other.id,variable_name,get_value());
    //}

    //name  = _name;

    set_max = function(_max){
        maximum = _max;
        calculated = false;
    }

    set_min = function(_min){
        minimum = _min;
        calculated = false;
    }

    set_min_max = function(_min,_max){
        minimum = _min;
        maximum = _max;
        calculated = false;
    }

    add_modifier = function(_mod){
        switch(_mod.op_type){
            case 0: array_push(modifiers[0], _mod); break;
            case 1: array_push(modifiers[1], _mod); break;
            case 2: array_push(modifiers[2], _mod); break;
        }

        calculated = false
    }

    clear_modifiers = function(){
        for(var op=0;op<array_length(modifiers);op++){
            array_delete(modifiers[op],0,array_length(modifiers[0]))
        }
    }

    remove_modifier = function(_modifier_name){
        for(var op=0;op<array_length(modifiers);op++){
            for(var modifier=0;modifier<array_length(modifiers[op]);modifier++){
                var current_modifier = modifiers[op][modifier];
                if current_modifier.name==_modifier_name{
                    delete current_modifier;
                    array_delete(modifiers[op],modifier,1);
                    calculated = false
                    return true
                }
            }
        }
        return false
    }

    calculate_value = function(){
        var calc = base;

        for(var a=0; a<array_length(modifiers[0]); a++){
            calc+=modifiers[0][a].amount;
        }

        for(var a=0;a<array_length(modifiers[1]);a++){
            calc += calc*modifiers[1][a].amount;
        }

        for(var a=0;a<array_length(modifiers[2]);a++){
            calc = calc*(1+modifiers[2][a].amount);
        }

        calculated_value = clamp(calc,minimum,maximum);
        calculated = true;

    }
}

function AttributeModifier(_name,_amount,_op_type) constructor{
    name = _name;
    amount = _amount;
    op_type = _op_type;
}