Let's create a simple program called `find_jedge.c` which tests seeds for a Junge Edge biome at a predefined location.
```
#include "finders.h"
#include <stdio.h>
int main()
{
// First initialize the global biome table 'int biomes[256]'. This sets up
// properties such as the category and temperature of each biome.
initBiomes();
// Allocate and initialize a stack of biome layers that reflects the biome
// generation of Minecraft 1.14
LayerStack g = setupGenerator(MC_1_14);
int64_t seed;
Pos pos = {0,0}; // block position to be checked
for (seed = 0; ; seed++)
{
// Go through the layers in the layer stack and initialize the seed
// dependent aspects of the generator.
applySeed(&g, seed);
// To get the biome at single block position we can use getBiomeAtPos().
int biomeID = getBiomeAtPos(g, pos);
if (biomeID == jungle_edge)
break;
}
printf("Seed %" PRId64 " has a Junge Edge biome at block position "
"(%d, %d).\n", seed, pos.x, pos.z);
// Clean up.
freeGenerator(g);
return 0;
}
```
You can compile this code either by directly adding a target to the makefile, or you can compile and link to a cubiomes archive:
```
$ cd cubiomes
$ make libcubiomes
```
To compile, and link the cubiomes library you can use one of
```
$ cc find_jedge.c libcubiomes.a -lm # static
$ cc find_jedge.c -L. -lcubiomes -lm # dynamic
```
Both options assume that your source code is saved as `find_jedge.c` in the cubiomes working directory. If your makefile is configured to use pthreads you also may need to add the `-lpthread` option to the compiler. Running the program should output:
```
$ ./a.out
Seed 615 has a Junge Edge biome at block position (0, 0).
```
We can also generate the biomes for a rectangular region using `getArea()` which also offers control over the entry layer, see the layer documentation for more information.
```
#include "generator.h"
#include "util.h"
int main()
{
unsigned char biomeColours[256][3];
// Initialize global biome table.
initBiomes();
// Initialize a colour map for biomes.
initBiomeColours(biomeColours);
// Allocate and initialize a stack of biome layers.
LayerStack g = setupGenerator(MC_1_14);
// Extract the desired layer.
Layer *layer = &g.layers[L_SHORE_16];
int64_t seed = 1661454332289;
int areaX = -60, areaZ = -60;
unsigned int areaWidth = 120, areaHeight = 120;
unsigned int scale = 4;
unsigned int imgWidth = areaWidth*scale, imgHeight = areaHeight*scale;
// Allocate a sufficient buffer for the biomes and for the image pixels.
int *biomes = allocCache(layer, areaWidth, areaHeight);
There is a reference document for the generator layers which contains a summary for most generator layers and their function within the generation process.
#### Finding Quad-Witch-Huts at a Specific Location
This classic type of finder uses several optimisations reguarding positioning of temples in the world. One of which allows you to specify the exact region (512x512) position about which the quad-hut should generate, without affecting the performance. For example:
`./find_quadhut 0 0`
will start a search with a regional positioning around the origin. (Actually the huts will be positioned in regions (-1,-1) to (0,0) this way.)
To my knowlege, as of the time of writing, this is fastest single-thread quad-hut-finder out there. However, note that the current implementation of the biome finding optimisations causes the finder to miss some seeds (<2%)infavourforspeed.
#### Finding Compact Biome Seeds
This finder searches for seeds that contain all major biome types within 1024 blocks of the origin. These seeds are very rare and it might take a moment for the finder to yield any. The commandline arguments are:
Below is a list of some very rare seeds that have all the interesing biomes in very close proximity to the origin, offering some unique scenery. TIP: If you are creating a new world you can use the Custom World Generation setting to reduce the biome size by a factor of up to 4, which puts all the biomes even closer together.
No more than four huts can generate close enough together to be operated by a single player. However, if you have a server, or you just want multiple witch farms in your world, then you can consider seeds with more than one multi-hut.
For seeds that have a quad-hut with 2 additional tri-huts, I present to you (possibly all) seeds that have the multi-huts in the closest proximity to spawn. These seeds have one quad-hut and 2 tri-huts within 40000 blocks.
If you are looking to get the "Adventuring Time" achievment you might consider one of the following seeds. All of these seeds have all 36 required biomes within less than 650 blocks from the origin:
