amenti-labs/vibecraft/generating-terrain

generate_terrain(type="rolling_hills", center_x=100, center_y=64, center_z=200, size=50, amplitude=8)
texture_terrain(style="temperate", center_x=100, center_y=64, center_z=200, size=50)
smooth_terrain(center_x=100, center_y=64, center_z=200, size=50, iterations=2)

build(code="""
commands = []
def noise(x, z, seed=42):
    n = x * 374761393 + z * 668265263 + seed
    n = (n ^ (n >> 13)) * 1274126177
    return ((n ^ (n >> 16)) & 255) / 255.0
base_x, base_z, size, base_y, amplitude = 100, 200, 50, 64, 8
for x in range(base_x, base_x + size):
    for z in range(base_z, base_z + size):
        height = noise(x, z, 1) * amplitude + noise(x*2, z*2, 2) * amplitude * 0.5
        y = int(base_y + height)
        commands.append(f'/setblock {x} {y} {z} grass_block')
        for below in range(base_y - 5, y):
            mat = 'dirt' if y - below <= 3 else 'stone'
            commands.append(f'/setblock {x} {below} {z} {mat}')
""", description="Rolling hills")

# Use ridged noise: abs(noise(x, z) - 0.5) * 2
# Snow above base+18, stone above base+12, grass below

# Sinusoidal path: path_x = base_x + sin(i * 0.1) * 10
# Depth based on distance from center
# Water in deepest part, sand on banks

//generate -h stone y<perlin(x/10,z/10,0)*5+64  # Noise terrain
//deform y+=sin(x/5)*3+sin(z/5)*3               # Sine wave hills
//generate stone (x*x+z*z)<radius^2 && y<sqrt(radius^2-x*x-z*z)  # Dome

//smooth 3  # 3 iterations
 
# Manual: average neighbor heights
def smooth(heights, x, z):
    return sum(heights.get((x+dx, z+dz), 64) for dx in [-1,0,1] for dz in [-1,0,1]) // 9