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Add here the collider and it will be replicated in all the cells.ĭo not worry about the warning, enter the following values and the collider will be configured correctly: This is how the Tile prefab inspector is configured By double-clicking on a prefab, it will be opened showing its content so that you can modify it.

Double click on the prefab to open it.

Let’s add a new component to the Tile prefab: The reason is that in order for this mechanism to work, we need a collider that can intercept events like mouse clicks. To our disappointment, you will notice that clicking on the grid will not do anything: the cells will not be checked. We must now add this component to the cells when they are created, so let’s go back to GridManager.cs and add the bold line inside the InitGrid function: SpriteRenderer renderer = newTile.GetComponent() When we click on a cell, Unity notices it and takes care of calling the OnMouseDown in all the components of the GameObject concerned.

This feature is special, as it is automatically called by Unity for us.

Since there is a function for selecting, we have also added a function for deselecting, which will restore the original color of the cell.

This color will add to the main color, making the cell darker. Let’s just change the color of the current tile, making it turn gray. This function is called when you want to check the current cell.This caching technique will allow us to avoid calling GetComponent every time, which is considered a heavy operation and can slow down our game. By means of a GetComponent we store the reference in the variable declared in the previous point.We will need it to change the color of the cell. Declare a variable to store the TileRenderer of this cell.A static variable means that it is shared among all instances of a class, so for each tile, that variable will always have the same value.

Declare a static variable to store the currently selected tile.The lines we added deal with the selection, as we said a little while ago. Let’s create a script, call it Tile and write the following: private static Tile selected // 1 We must provide feedback to the user to show if a cell is checked or not, to make it change the color of the selected cell. If you click on a non-adjacent cell, the currently selected one will be deselected, the new one selected without any swap.

We created our grid, now we have to make it interactive! What we are going to do now is to give the possibility to select the cells with a click, and swap them with a neighboring cell by clicking on it. This is part 2 of the tutorial on How to Create a match 3 game in Unity, here you can find the links to other parts: Hey, welcome to the second part of the this amazing tutorial, I hope you enjoyed the first part but now it’s time to move forward and develop all the logic to move the cells inside our beautiful grid.