System design

Learn the modular design of an inventory system.

Modular design

Instead of writing an inventory system as one piece, splitting it into small modules makes the work easier. Each module does only one job: storing data, managing slots, or updating the interface. This way when one module changes the others are not affected.

string veriModulu = "ItemData";
string arayuzModulu = "SlotUI";

Modular systems stay organized as they grow.

The design plan

Before starting the system a plan is needed. First decide how the data is held, then how the operations are done, and finally how the interface looks. This order sets the place of the modules.

string planSirasi = "Veri > Mantik > Arayuz";

Planning ahead prevents rewriting the code later.

Exercise Record the plan

In a class named TasarimPlani, define a string adim field with the value "Veri". In the Start method, set the adim value first to "Mantik", then to "Arayuz", and print the final value joined with the text "Son adim: " using Debug.Log.

Show example solution

using UnityEngine;

public class TasarimPlani : MonoBehaviour
{
    string adim = "Veri";

    void Start()
    {
        adim = "Mantik";
        adim = "Arayuz";
        Debug.Log("Son adim: " + adim);
    }
}

Test yourself

What is the biggest advantage of modular design?
- The system runs slower
- All code is gathered in one file
- One module changes without affecting the others
- More variables are needed
Show answer

One module changes without affecting the others — Because each module does only one job, a change in one does not leak into the others.

Write the last step of the plan

    string planSirasi = "Veri > Mantik > ____";

Show answer

    string planSirasi = "Veri > Mantik > Arayuz";

Design terms

Modüler tasarım

Splitting the system into small parts
Modül

An independent part that does one job
Tasarım planı

The order prepared before writing
Veri katmanı

The section where information is stored

Next lesson: ItemData ScriptableObject

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