CollisionDetection | A book and examples on collision detection | Game Engine library

type of vtkTubeFilter cells is TriangleStrip while collision required Triangle cell. vtkTriangleFilter can convert cell type to Triangle cell.

Finally solved. It was in the php-part. I replaced the fetching of the activeCategory directly in mysql with a parameter that I sent with Axios. Somehow the activeCategory-fetching led to to this strange behaviour, that it randmly executed the insert-statement once or twice.

Here's one way you could do it:

1. you need a Game object that will handle the update logic, store all current entities, deal with the game loop... IMO, this is where you should keep track of when was the last Ball fired and whether to fire a new one.

   In this demo, this object also handles current time, delta time, and requesting animation frames, but some might argue that this logic could be externalised, and just call some sort of Game.update(deltaTime) on each frame.

1. you need different objects for all entities in your game. I created an Entity class because I want to make sure all game entities have the minimum required to function (ie. update, draw, x, y...).

   There is a Ball class that extends Entity and is responsible for knowing it's own parameters (speed, size, ...), how to update and draw itself, ...

   There is a Paddle class that I left bare for you to complete.

The bottom line is it's all a matter of separation of concerns. Who should know what about whom? And then pass variables around.

As for your other question:

Do I need to create multiple requestAnimationFrame loops for each ball?

It's definitely possible, but I'd argue that having a centralized place that handles lastUpdate, deltaTime, lastBallCreated makes things much simpler. And in practice, devs tends to try and have a single animation frame loop for this.

script exists just in Start() method; so that' why it is not visible in the Update() method. Declare it globally, and then reuse it (in case if those are static class methods).

i rebased my fork with the current master branch. Removed all the files in the src directory. Then did a git hard reset. Then ran git pull. Ran the remove build cache script again. Then kicked off another build. Build is working fine again with the current master branch. So i am guessing the issue was with my src directory not being in sync with the fork repo.

You first define your rotating positions as an array of BasicBlocks. This is an array of references to each Basic Block that constitutes a rotated position.

When you do block.moveLeft(), you change the x value to a different number from the original. This means that the objects saved in the array of each position have changed to have that new x value and so when you try to rotate, the positions don't make sense anymore.

Example:

Look at tetrominoS. Its first position is

One way to do it is to have 20 as a property of your class. This property would be a "speed" property. You can then access it using "this.speed". Once you detect a collision set the speed to 0 and you will "freeze" your character.

For example moveRight would become

Disclaimer:
If you expect an answer for your specific code here, you'll be disappointed, so if you do not intend to start from scratch or something like that, I'm sorry for the whole text.

I think you're misundertanding the purpose of a Game Loop.

There are some things wrong with your code, but I'll stick with the basis of your question, which also happen to be the basis of every game, the Game Loop.

Let's start with Frames. You probably know what a Frame is. It is like a drawing on the screen of a single moment in time. For example, when you watch a movie, you're actually watching a lot of pictures (frames) being drawn very fast, one after another, which gives the illusion of movement (usually 30 "pictures" per second).

The Game Loop is the responsible for drawing the frames of the game, one after another, it executes functions, methods, changes variables and based on the results, it finally draws on the screen what is happening on the game.

The Game loop is basically what makes everything in the game possible to happen, it's like what time is for us in real life: without time passing, there would be no past, present or future, we would be stuck in a single frame forever. The same happens on a game, withou a Game Loop, there would be no iterations, nor changes or frame updates.

Knowing that, the first thing you must do is always having a "central" game loop, and never split it. Always name other methods as "updates" and call them from the master game loop. So a most correct structure for your code would be (this is just pseudocode similar to js, not any language in particular):

If I get you right you just want to reset the game. Just do