Minecraft doesn't use individual cubes. Each chunk is one object. When you are breaking a "block", you're actually deforming the chunk's singular mesh. It just updates the polygons of the mesh. When you place a block onto the terrain, it just adds new vertices to the mesh, and removes the vertices underneath the new block. It still remains one mesh. That's why you don't see cubes when you clip underneath the surface. You're seeing one big mesh with only the external triangles generated. Why would anyone use thousands or millions of objects when it could just be ONE object? As for raycasting, you don't need to use physics for that. You're using a grid. You could design an extremely fast lookup system that would take almost no time at all to calculate, probably just the equivalent of few hashmap lookups, instead of having a literal physics engine to determine your grid.

Nice job ! Great to see people trying new tech like DOTS and sharing the issues they meet and how the solved it.

Nice! We got there in the end!

Amazing!

nice work! I am currently trying to understand dots with the physics library, hopefully you make it far in your project

Are there any features you would wish in this kind of game? Put them here in the comments and they will be added to the idea pool in my Trello board :)

DOTS is another word for triggering Burnout

looks great but it needs some optimization i recommend looking into Minecraft's code

For the entire video my question was: "Why he isn't using the unity 3d tilemap for the grid?" then i found out that you store the data of the tile inside the tile itself. That's the worst things you can do, not even Terraria does that! The way to go here is to have a world manager that each time you walk outside of a chunk the manager save the state of the chunk, then, when the player is near that chunk (at least 1 chunk out of screen of distance) the manager run the simulation to "fake" that the chunk continued to live on during the player's absence. Not only this, but ECS was developed for entities i.e., npcs, mobs, vehicles or in other word the part of your game that are kinda "alive". Tiles are essentially textures (or object) that exists without doing nothing, some games even instantiate tiles directly in the GPU, and because (especially if you don't "dig or build") they don't have to do nothing all changes are handled by the famous WorldManager I mentioned earlier. In this way you can have a lot of tile without destroying the users pc. Remember "use the right tool for the right job" if you already have a system (tilemap) that with a little bit of modification can help you achieve what you need don't force yourself to adapt an entrie different system (ecs) to your needs. And you can see that even at Unity they didn't think of using DOTS for everything infact you cannot create a "DOTS-only" project from Unity Hub you need at least one scene with some Mono object inside. This is only a suggestion, i'm not an english speaker so if it's came off as a rant i'm sorry. However you decide to go i wish you luck with your project!

So no physics at all now?

Great video but , the music is distracting

Invite invalid 😞