Matching and stacking
- Game Development course
- Advanced
- Lesson 28/71
- 4 min
Learn to match and stack identical items.
The stack idea
Items of the same type are gathered in one slot as a stack. For example 5 apples sit in one slot; the slot count does not rise. Every slot has a stack limit and this limit is not exceeded.
int yiginAdedi = 5;
int yiginLimiti = 10;This way inventory space is not wasted.
Matching
Understanding whether two items are the same is called matching. If the item type and the name are the same, they can be merged. Items of different types never enter the same stack.
bool eslesme = (birAd == ikiAd);Matching is the first step of the merge operation.
Practice Merge the stacks
In a class named YiginBirlestir, define an int birAdet field with the value 3 and an int ikiAdet field with the value 5. In the Start method, add these two values and assign the result to an integer named toplam. Print the text "Toplam yigin: " joined with toplam using Debug.Log.
Starter code
using UnityEngine;
public class YiginBirlestir : MonoBehaviour
{
// int birAdet alanini 3, int ikiAdet alanini 5 degeriyle tanimla
void Start()
{
// birAdet ile ikiAdet degerlerini toplayip toplam degiskenine ata
// "Toplam yigin: " metnini toplam ile birlestirip yazdir
}
}Sample solution
using UnityEngine;
public class YiginBirlestir : MonoBehaviour
{
int birAdet = 3;
int ikiAdet = 5;
void Start()
{
int toplam = birAdet + ikiAdet;
Debug.Log("Toplam yigin: " + toplam);
}
}Expected output
Toplam yigin: 8
Questions and answers
Review the lesson questions together with their answers. To test yourself, solve the lesson interactively.
1 What happens when 5 apples are added to the inventory?
int yiginAdedi = 5;- The 5 apples stack in a single slot Correct answer
- The slot count rises automatically
- 5 separate slots are used
- The items do not fit in the inventory
Explanation: Items of the same type stack in one slot; the slot count rises with the number of types, not with the item count.
2 Complete the merge operation
int toplamYigin = 3 ____ 5; int toplamYigin = 3 + 5;Explanation: When two stacks are merged their counts are added, so the plus operation is used.
3 Merge terms
| Term | Meaning |
|---|---|
Stack |
A pile of the same items |
Merge |
Combining two stacks |
Match |
Finding that items are the same |
Yığın limiti |
The maximum count a slot carries |