14 replies to this topic

[PrimuS]

Yet Another Minecraft Clone v0.2 (in 2D)
GM Version: GM8.1

Description:
Your regular Minecraft-like 2D (Terraria-like, you could say) terrain generator that i've made in my spare time. Without caves. Just plain terrain. And it is pretty lousy, also. So why would you download it? Well, for one single reason.
It has infinite world generation (i hope it is truly infinite, lol). Well, that's not such a huge improvement over the others, but you may want to look at it.
It uses a kind of a chunk system as Minecraft had some time ago. The chunks are areas of the map 320x2048 (20x128 blocks; adjustable) - one view wide - in size. They contain all the blocks (duh) and, possibly, items, mobs, and everything else. Only three chunks of the map are present at the same time. When you leave a chunk beyond your 'render area' (that's three chunks currently: one behind the player, one where the player is currently situated, and one ahead), it gets saved as a simple binary file with its filename containing the chunk id (i.e. 0-320 will be the 0th chunk, -320-0 will be the -1th chunk, etc.) and all the stuff from that chunk gets deleted from memory, so your game would not lag. When a chunk enters your 'render area', it loads into memory, using that file that was saved previously. Or, if the chunk is actually completely new and no chunk file is present, it gets generated randomly. Pretty simple.
Oh, and it also has biomes. Three of them. And trees (if you can actually call these things trees. And flowers. And random seed support through the random_set_seed() function; it works almost as in Minecraft.

I'm not sure if that was done in GM before, lol. Thought someone would find it useful.

Instructions:
WASD - movement
LMB - place block
RMB - remove block
F - show/hide the debug info
R - return to the spawn
Terrain begins at y = 1024, so if you see nothing when you start the game, move down a bit.

Download:
Version 0.2. (.EXE + .GM81; ~1.8MB)

Changelog:
22.02.12 -- v0.2:

Spoiler

- added file descriptor thingy that stores the world seed, generator state and player's position. It's actually a text file, because i was too lazy to convert seeds into doubles;
- added some sort of a main menu;
- added some helpful hotkeys;
- added an executable;
- chunk files now have '.cnk' extension instead of '.chunk';
- modified the OP;
- bugfixes.

Known bugs:
- Seeds work pretty derpy, you can try fixing that by putting 'random_set_seed(global.map_seed)' in the beginning of the chunk_gen() script;
- After you reach distances that are ~15000 units away from your spawnpoint, some barely noticeable graphic artifacts begin to appear, like wobbly sprites and stuff. Tested on my PC only. Should be some GM bug;
- Only chunks (current_chunk - 2) and (current_chunk + 2) are cleared. That is enough when the player is moving smoothly, but when hopping distances wider than the chunk itself, it will leave uncleared chunks behind;
- Chunks do not get cleared when you teleport to the spawn (see the third bug);
Oh, and it does not overwrite previously saved worlds, if you select the same world folder at the start. Instead it loads them, but you can sure change the random seed at the start. So be careful with that.

Screenies:

Spoiler

The 110th chunk. You can notice the graphic artifacts:

A snowy biome:

Just some terrain:

Oh, and it actually runs stable on 59 FPS when no chunk loading is happening. You might also use the instance_deactivate() function to improve performance.

Edited by PrimuS, 22 February 2012 - 08:26 PM.

[PrimuS]

Oh snap, i pressed 'Quote' instead of 'Edit' ocasionally. This should be deleted.

Edited by PrimuS, 22 February 2012 - 02:29 PM.

[NicroGames]

Wow!
This is the best terrain generation I have seen in GameMaker. It is a bit slow when generating new chunks, but that's probably GameMaker's fault.

[PrimuS]

Well, thanks.
It saves chunks instantly after generating em, and also when clearing them in case any changes have happened since the generation/loading of these chunks. That's why it hangs a bit. It's not the best way of generating a map, so Minecraft now uses more advanced map formats, like its region system or whatever. And the terrain generating algorithm itself is not the best you can do.

Edited by PrimuS, 22 February 2012 - 03:50 PM.

[Dylan93]

Wow!
This is the best terrain generation I have seen in GameMaker. It is a bit slow when generating new chunks, but that's probably GameMaker's fault.

I completely agree with this, its a smart way and it works

[AKSuperNewb]

By the way, MineCraft still uses chunks. Just sayin

This is pretty awesome. Great job!

Edited by AKSuperNewb, 22 February 2012 - 07:28 PM.

[PrimuS]

It does use chunks, but i think they're saved and managed using some other way, considered to be better by the developers. Thanks.
And anyone knows what's up with these little annoying artifact thingies? Any way to fix em?

Edited by PrimuS, 22 February 2012 - 08:15 PM.

[BluePotato1994]

It does use chunks, but i think they're saved and managed using some other way, considered to be better by the developers. Thanks.
And anyone knows what's up with these little annoying artifact thingies? Any way to fix em?

What are the artifact thingies? From looking at the first screenshot it just looks like normal terrain generation

[PrimuS]

What are the artifact thingies? From looking at the first screenshot it just looks like normal terrain generation

There's nothing wrong with the generation itself, but if you look close enough, you might notice that the text on the screenshot appears a bit distorted, compared to other shots. If you try the thing out for yourself, you'll see that the text and other sprites begin to 'wobble' after reaching ~100th chunk. That 'wobbling' increases with distance.

[OldSkoolGamer]

That sounds almost like a floating point error to me. I'll download and test myself to see what's up.

[gardian20]

Mind if i use it in my game?

[gardian20]

Hey, could i have a list of block type numbers? I could really use it.

Thanks!

-Please answer :D

Edited by gardian20, 22 May 2012 - 05:57 PM.

[PrimuS]

You probably don't need it already, but just in case: they are identical to subimage numbers in spr_block.
And yes, you can use it in your game.

Edited by PrimuS, 07 May 2012 - 03:28 PM.

[gardian20]

You probably don't need it already, but just in case: they are identical to subimage numbers in spr_block.
And yes, you can use it in your game.

Thanks! my little game would not be possible without it!

[ThePC007]

The way you did the infinite terrain generation is pretty much exactly the way I did it.