// Use this for initialization
void Start()
{
// Dimensions of our volume.
int width = 100;
int height = 10;
int depth = 100;
TerrainVolumeData volumeData = VolumeData.CreateEmptyVolumeData <TerrainVolumeData>(new Region(0, 0, 0, width, height, depth));
// Let's keep the allocation outside of the loop.
MaterialSet materialSet = new MaterialSet();
float simplexNoiseValue = 0f;
simplexNoiseValue += 1.0f;
simplexNoiseValue *= 127.5f;
materialSet.weights[0] = (byte)simplexNoiseValue;
for (int z = 0; z < depth; z++)
{
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
volumeData.SetVoxel(x, y, z, materialSet);
}
}
}
//Add the required volume component.
TerrainVolume terrainVolume = gameObject.AddComponent <TerrainVolume>();
// Set the provided data.
terrainVolume.data = volumeData;
// Add the renderer
gameObject.AddComponent <TerrainVolumeRenderer>();
}
// Use this for initialization
void Start()
{
// Dimensions of our volume.
int width = 64;
int height = 64;
int depth = 64;
TerrainVolumeData volumeData = VolumeData.CreateEmptyVolumeData <TerrainVolumeData>(new Region(0, 0, 0, width - 1, height - 1, depth - 1));
float noiseScale = 32.0f;
float invNoiseScale = 1.0f / noiseScale;
// Let's keep the allocation outside of the loop.
MaterialSet materialSet = new MaterialSet();
// Iterate over each voxel and assign a value to it
for (int z = 0; z < depth; z++)
{
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
// Simplex noise is quite high frequency. We scale the sample position to reduce this.
float sampleX = (float)x * invNoiseScale;
float sampleY = (float)y * invNoiseScale;
float sampleZ = (float)z * invNoiseScale;
// Get the noise value for the current position.
// Returned value should be in the range -1 to +1.
float simplexNoiseValue = SimplexNoise.Noise.Generate(sampleX, sampleY, sampleZ);
// Cubiquity material weights need to be in the range 0 - 255.
simplexNoiseValue += 1.0f; // Now it's 0.0 to 2.0
simplexNoiseValue *= 127.5f; // Now it's 0.0 to 255.0
materialSet.weights[0] = (byte)simplexNoiseValue;
// We can now write our computed voxel value into the volume.
volumeData.SetVoxel(x, y, z, materialSet);
}
}
}
//Add the required volume component.
TerrainVolume terrainVolume = gameObject.AddComponent <TerrainVolume>();
// Set the provided data.
terrainVolume.data = volumeData;
// Add the renderer
gameObject.AddComponent <TerrainVolumeRenderer>();
}
// Use this for initialization
void Start()
{
// The size of the volume we will generate
int width = 128;
int height = 32;
int depth = 128;
// FIXME - Where should we delete this?
/// [DoxygenSnippet-CreateEmptyTerrainVolumeData]
//Create an empty TerrainVolumeData with dimensions width * height * depth
TerrainVolumeData data = VolumeData.CreateEmptyVolumeData <TerrainVolumeData>(new Region(0, 0, 0, width - 1, height - 1, depth - 1));
/// [DoxygenSnippet-CreateEmptyTerrainVolumeData]
TerrainVolume volume = GetComponent <TerrainVolume>();
TerrainVolumeRenderer volumeRenderer = GetComponent <TerrainVolumeRenderer>();
volume.data = data;
// This example looks better if we adjust the scaling factors on the textures.
volumeRenderer.material.SetTextureScale("_Tex0", new Vector2(0.062f, 0.062f));
volumeRenderer.material.SetTextureScale("_Tex1", new Vector2(0.125f, 0.125f));
volumeRenderer.material.SetTextureScale("_Tex2", new Vector2(0.125f, 0.125f));
// At this point our volume is set up and ready to use. The remaining code is responsible
// for iterating over all the voxels and filling them according to our noise functions.
// This scale factor comtrols the size of the rocks which are generated.
float rockScale = 32.0f;
float invRockScale = 1.0f / rockScale;
// Let's keep the allocation outside of the loop.
MaterialSet materialSet = new MaterialSet();
// Iterate over every voxel of our volume
for (int z = 0; z < depth; z++)
{
for (int y = height - 1; y > 0; y--)
{
for (int x = 0; x < width; x++)
{
// Make sure we don't have anything left in here from the previous voxel
materialSet.weights[0] = 0;
materialSet.weights[1] = 0;
materialSet.weights[2] = 0;
// Simplex noise is quite high frequency. We scale the sample position to reduce this.
float sampleX = (float)x * invRockScale;
float sampleY = (float)y * invRockScale;
float sampleZ = (float)z * invRockScale;
// Get the noise value for the current position.
// Returned value should be in the range -1 to +1.
float simplexNoiseValue = SimplexNoise.Noise.Generate(sampleX, sampleY, sampleZ);
// We want to fade off the noise towards the top of the volume (so that the rocks don't go
// up to the sky) adn add extra material near the bottom of the volume (to create a floor).
// This altitude value is initially in the range from 0 to +1.
float altitude = (float)(y + 1) / (float)height;
// Map the altitude to the range -1.0 to +1.0...
altitude = (altitude * 2.0f) - 1.0f;
// Subtract the altitude from the noise. This adds
// material near the ground and subtracts it higher up.
simplexNoiseValue -= altitude;
// After combining our noise value and our altitude we now have values between -2.0 and 2.0.
// Cubiquity renders anything below the threshold as empty and anythng above as solid, but
// in general it is easiest if empty space is completly empty and solid space is completly
// solid. The exception to this is the region near our surface, where a gentle transition helps
// obtain smooth shading. By scaling by a large number and then clamping we achieve this effect
// of making most voxels fully solid or fully empty except near the surface..
simplexNoiseValue *= 5.0f;
simplexNoiseValue = Mathf.Clamp(simplexNoiseValue, -0.5f, 0.5f);
// Go back to the range 0.0 to 1.0;
simplexNoiseValue += 0.5f;
// And then to 0 to 255, ready to convert into a byte.
simplexNoiseValue *= 255;
// Write the final value value into the third material channel (the one with the rock texture).
// The value being written is usually 0 (empty) or 255 (solid) except around the transition.
materialSet.weights[2] = (byte)simplexNoiseValue;
// Lastly we write soil or grass voxels into the volume to create a level floor between the rocks.
// This means we want to set the sum of the materials to 255 if the voxel is below the floor height.
// We don't want to interfere with the rocks on the transition between the material so we work out
// how much extra we have to add to get to 255 and then add that to either soil or grass.
byte excess = (byte)(255 - materialSet.weights[2]);
if (y < 11)
{
// Add to soil material channel.
materialSet.weights[1] = excess;
}
else if (y < 12)
{
// Add to grass material channel.
materialSet.weights[0] = excess;
}
// We can now write our computed voxel value into the volume.
data.SetVoxel(x, y, z, materialSet);
}
}
}
}
void CreateTerrain()
{
TerrainVolumeData terrainData = VolumeData.CreateEmptyVolumeData <TerrainVolumeData>(new Region(0, 0, 0, (width * 3) + 1, (maxHeight * 3) + 1, (depth * 3) + 1));
MaterialSet materialSet = new MaterialSet();
float simplexNoiseValue = 1f;
for (int z = 0; z <= depth; z += 1)
{
for (int x = 0; x <= width; x += 1)
{
Vector3 pos = new Vector3(x, 0f, z);
if (TerrainVoxelPosition(ref pos))
{
materialSet.weights[3] = (byte)128;
//Center
terrainData.SetVoxel((x * 3) + 1, (int)pos.y + 1, (z * 3) + 1, materialSet);
terrainData.SetVoxel((x * 3) + 1, (int)pos.y + 1, (z * 3) + 2, materialSet);
terrainData.SetVoxel((x * 3) + 2, (int)pos.y + 1, (z * 3) + 1, materialSet);
terrainData.SetVoxel((x * 3) + 2, (int)pos.y + 1, (z * 3) + 2, materialSet);
materialSet.weights[3] = (byte)128;
//Z Up
Vector3 pos2 = new Vector3(x, 0f, z - 1);
TerrainVoxelPosition(ref pos2);
if (pos2.y > pos.y)
{
terrainData.SetVoxel((x * 3) + 1, (int)pos.y + 2, (z * 3) + 0, materialSet);
terrainData.SetVoxel((x * 3) + 2, (int)pos.y + 2, (z * 3) + 0, materialSet);
}
if (pos2.y == pos.y)
{
terrainData.SetVoxel((x * 3) + 1, (int)pos.y + 1, (z * 3) + 0, materialSet);
terrainData.SetVoxel((x * 3) + 2, (int)pos.y + 1, (z * 3) + 0, materialSet);
}
if (pos2.y < pos.y)
{
terrainData.SetVoxel((x * 3) + 1, (int)pos.y, (z * 3) + 0, materialSet);
terrainData.SetVoxel((x * 3) + 2, (int)pos.y, (z * 3) + 0, materialSet);
}
//Z Down
Vector3 pos3 = new Vector3(x, 0f, z + 1);
TerrainVoxelPosition(ref pos3);
if (pos3.y > pos.y)
{
terrainData.SetVoxel((x * 3) + 1, (int)pos.y + 2, (z * 3) + 3, materialSet);
terrainData.SetVoxel((x * 3) + 2, (int)pos.y + 2, (z * 3) + 3, materialSet);
}
if (pos3.y == pos.y)
{
terrainData.SetVoxel((x * 3) + 1, (int)pos.y + 1, (z * 3) + 3, materialSet);
terrainData.SetVoxel((x * 3) + 2, (int)pos.y + 1, (z * 3) + 3, materialSet);
}
if (pos3.y < pos.y)
{
terrainData.SetVoxel((x * 3) + 1, (int)pos.y + 0, (z * 3) + 3, materialSet);
terrainData.SetVoxel((x * 3) + 2, (int)pos.y + 0, (z * 3) + 3, materialSet);
}
// //X Up
Vector3 pos4 = new Vector3(x - 1, 0f, z);
TerrainVoxelPosition(ref pos4);
if (pos4.y > pos.y)
{
terrainData.SetVoxel((x * 3), (int)pos.y + 2, (z * 3) + 1, materialSet);
terrainData.SetVoxel((x * 3), (int)pos.y + 2, (z * 3) + 2, materialSet);
}
if (pos4.y == pos.y)
{
terrainData.SetVoxel((x * 3), (int)pos.y + 1, (z * 3) + 1, materialSet);
terrainData.SetVoxel((x * 3), (int)pos.y + 1, (z * 3) + 2, materialSet);
}
if (pos4.y < pos.y)
{
terrainData.SetVoxel((x * 3), (int)pos.y + 1, (z * 3) + 1, materialSet);
terrainData.SetVoxel((x * 3), (int)pos.y + 1, (z * 3) + 2, materialSet);
}
// //X Down
Vector3 pos5 = new Vector3(x + 1, 0f, z);
TerrainVoxelPosition(ref pos5);
if (pos5.y > pos.y)
{
terrainData.SetVoxel((x * 3) + 3, (int)pos.y + 2, (z * 3) + 1, materialSet);
terrainData.SetVoxel((x * 3) + 3, (int)pos.y + 2, (z * 3) + 2, materialSet);
}
if (pos5.y == pos.y)
{
terrainData.SetVoxel((x * 3) + 3, (int)pos.y + 1, (z * 3) + 1, materialSet);
terrainData.SetVoxel((x * 3) + 3, (int)pos.y + 1, (z * 3) + 2, materialSet);
}
if (pos5.y < pos.y)
{
terrainData.SetVoxel((x * 3) + 3, (int)pos.y + 0, (z * 3) + 1, materialSet);
terrainData.SetVoxel((x * 3) + 3, (int)pos.y + 0, (z * 3) + 2, materialSet);
}
if (pos2.y > pos.y || pos4.y > pos.y)
{
terrainData.SetVoxel((x * 3) + 0, (int)pos.y + 2, (z * 3) + 0, materialSet);
}
if (pos2.y <= pos.y && pos4.y <= pos.y)
{
terrainData.SetVoxel((x * 3) + 0, (int)pos.y + 1, (z * 3) + 0, materialSet);
}
if (pos2.y > pos.y || pos5.y > pos.y)
{
terrainData.SetVoxel((x * 3) + 3, (int)pos.y + 2, (z * 3) + 0, materialSet);
}
if (pos2.y <= pos.y && pos5.y <= pos.y)
{
terrainData.SetVoxel((x * 3) + 3, (int)pos.y + 1, (z * 3) + 0, materialSet);
}
if (pos3.y > pos.y || pos4.y > pos.y)
{
terrainData.SetVoxel((x * 3) + 0, (int)pos.y + 2, (z * 3) + 3, materialSet);
}
if (pos3.y <= pos.y && pos4.y <= pos.y)
{
terrainData.SetVoxel((x * 3) + 0, (int)pos.y + 1, (z * 3) + 3, materialSet);
}
if (pos3.y > pos.y || pos5.y > pos.y)
{
terrainData.SetVoxel((x * 3) + 3, (int)pos.y + 2, (z * 3) + 3, materialSet);
}
if (pos3.y <= pos.y && pos5.y <= pos.y)
{
terrainData.SetVoxel((x * 3) + 3, (int)pos.y + 1, (z * 3) + 3, materialSet);
}
}
}
}
terrainVolume = terrainHolder.AddComponent <TerrainVolume>();
terrainVolume.data = terrainData;
TerrainVolumeRenderer tr = terrainHolder.AddComponent <TerrainVolumeRenderer>();
tr.material = terrainMaterial;
terrainHolder.AddComponent <TerrainVolumeCollider>();
}