VoxelShapes for Beta 1.7.3

Fully adds the ability to have multiple outline/collision shapes in one block! Completely compatible with server and client, and modifies Vanilla blocks.

Base Feature

Fixes stairs and fences collision shape to go to individual smaller boxes rather than the whole block taking up the space.

API

You can utilize this mod in your mod by giving your blocks multiple boxes!
HasVoxelShape will automatically affect collision, if you want a different collision also implement HasCollisionVoxelShape.
You can also implement HasCollisionVoxelShape by itself, to only give collision multiple boxes.

Include in your build.gradle

dependencies {
    implementation("com.github.KydZombie:voxel-shapes:${project.voxelshapes_version}") { transitive false }
}

// Demo of a block made of two vertical half slabs
class ExampleBlock extends Block implements HasVoxelShape, HasCollisionVoxelShape {
    // Not required but more efficient to
    // store this here than create it
    // each time getVoxelShape is called.
    // preCache() is also optional but recommended when possible.
    private static final VoxelData VOXEL_DATA = new VoxelData(
            Box.create(0, 0, 0, 0.5, 1.0, 1.0), 
            Box.create(0.5, 0, 0, 1.0, 1.0, 1.0)
    ).preCache();
    
    public ExampleBlock(int id, Material material) {
        super(id, material);
    }

    @Override
    public @Nullable VoxelShape getVoxelShape(World world, int x, int y, int z) {
        // You could check the blockstate/meta here with world to change based off the block
        return voxelData.withOffset(x, y, z);
    }

    public @Nullable VoxelShape getCollisionVoxelShape(World world, int x, int y, int z) {
        // Example of giving this block no collision
        return null;
    }
}