How to Make Video Games 10 : Make Tetris 3

We continue making a Tetris clone in this video. Our goal this time is to get those Tetris shapes to stack on each other. A lot more goes into that then we may have thought. I'll be covering Simulating Game boards in Arrays, Printing Arrays, Removing Event Handling from Objects, Instantiating Objects, Debugging, Moving All Shapes in a Scene and a whole lot more.

I continue with my new teaching format in which I make mistakes and then fix them to help you learn.

Thank you to Patreon supporters like the following for helping me make this video

@kyleaisho
@thetwistedhat
@vjFaLk

[auraxfire]

By next month expect 150 buggy Tetris clones on the Android App Store.

[ezisreel]

Just found your videos from Brackeys I am glad it was a recommended channel.

[SunnyApples]

Thank you very much Derek! I love every upload. So far I have done Pong and Space Invaders 2 times, to get the most out of this series.
By the way, how do you see your Game series unfolding in the coming months? And how long will it last.
You know that feeling when you are following some series and you are afraid that you will run out of episodes? :D
Looking forward to things to come!

[Hunter-fytp]

Thanks Derek, love your tutorials!!! Always wanted to learn Unity with my C# experience:)

[angelinajolie]

Hi Derek ! I think the title should follow the previous titles' pattern: How to Make Video Games 10 : Make Tetris 3.so when one searches for it they appear one after the other on the right side of the screen on youtube just like a playlist.

[voltbf]

How do you just go from the cubes falling faster then before to them working normaly again, i cannot wrap my head around this, also what made them fall so fast..

[rohanfrancis]

Hey Derek What application do you use to make the sounds.

[victornaut]

Derek making game dev tutorials?
Now we're talking :D

[RafaSchmidt]

HI Derek :)  I have a one question - Why did you use static class instead of singleton for GameBoard? (its just form making this easier or do you think that storing information inside of static class without instance is good idea?)

[jerlhn]

I don't miss any of your tutorials

[jidian]

You lost me at10:10, I don't understand what UpdateGameBoard() is used for, and it's not working. Shapes dropping down very fast and the matrix on the left is not woking

[SliceofJason]

Wow Derek, you make the best tutorials! Could you possibly do an example program that navigates to and through a website, looking for keywords, and clicking buttons within the site? Use whatever language you think would best fit.

How do we know. What is the size of our array ?

[GameSmarttHD]

Could you explain what a transform is? I understand that each object has a transform component, but how does one refer to it? I'm unfamiliar with C# syntax. if the object is Cube and I want to get its x do I do Cube.Transform.x?

[IvanSkodje]

You should add 'Tetris' to the title so when people search for it, they will find it easier :)

[MiikaKontio]

Hi, how did you make it so that the shapes kind of rotate around their middle point. For example my IShape rotates around first cube on the left.

[roninred]

awesome.. waiting for the next part of this tutorial..

[ezalor]

Why did the GameObjectGroup screwed everything up for me? I mean in the IsInBorder I have different numbers than you, I tried to configure the exact position but it's not making any changes and the shapes keeps spawning onto each others.

[ZhuSM]

it might've been easier to have readjusted each of the individual coordinates to integer values for each cube in the wall objects for the sake of precision and not having to mess around with the arrows--you can avoid creating the game object with that; otherwise, thanks for the video! good stuff

[user.c]

i'm getting an error which when running pauses my game to make me aware of it

this is the error
IndexOutOfRangeException: Array index is out of range.
Shape.IsInGrid () (at Assets/Scripts C#/Shape.cs:110)

this is line 110 in the IsInGrid function
if (GameBoard.gameBoard[(int)vect.x, (int)vect.y] != null &&

could i get some help with this?