Dart Project - Building a Client Side Tetris Game - Part Two

In this video, we finish the Tetris game by building out the game logic. Its a basic Tetris game that can be easily expanded. Fixed and re-uploaded added a small piece in the middle; sorry about the lower tone of voice.

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[TensorProgramming]

Had to reupload this video due to some technical difficulties. While I was doing it, I figured I might as well add a section explaining the clear lines logic in a way that is more visual. Sorry about the change in my tone of voice; had to keep it down due to people sleeping in the other room. Hope you guys enjoy.

[zaynhamza]

18:01 how did you assign (Element) to (board)?
(board) type is (CanvasElement) :)
I tried changing it to element and vise versa, but nothing worked
please help

[曹文涛-hl]

very clearly and useful tutorial, thanks.

[bryanhunsberger]

Tensor: I'm learning here, so sometimes my questions might be missing some very basic concepts. When you create the method validMove, you call the class Tile and the specific [something] "tile". Tile is the class with x, y values. tiles is the list of 4 two variable Tile entities. But the only reference to tile I see is when you define the method for rotateRight and that sufficient to then call it...or is the expression (Tile tile in currentBlock.tiles) defining that in and of itself.


I guess what I'm asking is, how does the compiler know what "tile" is? How does it know to evaluate each individual xy of the list tiles? Is it looking back at the first reference in the rotate method or are you defining that word, and could have said any word?

[bryanhunsberger]

Shoot, one more question! This last line in your handleKeyboard method: if (event.keyCode == 32) while (pieceMoving('down')) {} This does two things, right? 1. if space is hit, it loops the down method to drop the piece, but it is also the line that sends a down to pieceMoving according to the timer's updateGame, correct? So this line is two in one as well....allows for space bar to drop it all the way in a loop, and is keeping the piece dropping if nothing is pressed at all? I can sort of gather that this is happening, but I can't quite put together why this is happening. What's kind of voodoo is going on with that amazing "while" at the end?

[bryanhunsberger]

Tensor, one more question. In this line: if(!(pieceIsMoving = validMove()))....you are both evaluating for pieceIsMoving to NOT equal (!=) validMove as well as setting the value of pieceIsMoving to validMove in the same expression line, right? Both evaluating and setting the value at the same time?

[kirill]

Great tutorial. But when you started the explanation of moving, rotating, limiting etc. I felt anxious and my imposter syndrome was back 😅

Didn't think it would be so complicated. Real world Flutter apps are so much more easier.

[namanmakhija]

everytime i try to run webdev serve it shows webdev is not recognized as an internal pr external command please help

[rasyidcode]

Hello sir, thanks for the tutorial :)
I got some error on this line :
{
boardState[t.x][t.y] = 1; //this line
rowState[t.y]++;
});
t.y actually -1 so that the error become 'index out of range' since we defined some of the tiles inside block that has -1 on y-axis.

ps: sorry for my broken english

[RobertWildling]

Again: fantastic! Now playing Tetris... instead of learning... (please make a video on how to stop playing... ;-) ...)