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| using UnityEngine;
public class TerrainLayerControllerTopography : MonoBehaviour
{
public Terrain terrain;
public TerrainLayer[] terrainLayers;
private float[,] heights;
private float[,] heightsOld;
private float[,,] alphamaps;
private int mapWidth;
private int mapHeight;
private int layerIndex;
private float height;
private int degreeСhange;
private void Start()
{
mapWidth = terrain.terrainData.alphamapWidth;
mapHeight = terrain.terrainData.alphamapHeight;
alphamaps = new float[mapWidth, mapHeight, terrainLayers.Length];
heightsOld = terrain.terrainData.GetHeights(0, 0, terrain.terrainData.heightmapResolution, terrain.terrainData.heightmapResolution);
}
private void Update()
{
DegreeChangeUpdate();
if (degreeСhange > 1000)
{
ColorUpdate();
}
}
public void DegreeChangeUpdate()
{
degreeСhange = 0;
heights = terrain.terrainData.GetHeights(0, 0, terrain.terrainData.heightmapResolution, terrain.terrainData.heightmapResolution);
for (int x = 0; x < mapWidth; x++)
{
for (int y = 0; y < mapHeight; y++)
{
height = heights[x, y];
if (Mathf.Abs(height - heightsOld[x, y]) > 0.05f)
{
degreeСhange++;
}
heightsOld[x, y] = height;
}
}
}
public void ColorUpdate()
{
heights = terrain.terrainData.GetHeights(0, 0, terrain.terrainData.heightmapResolution, terrain.terrainData.heightmapResolution);
for (int x = 0; x < mapWidth; x++)
{
for (int y = 0; y < mapHeight; y++)
{
height = heights[x, y];
if (height <= 0.125f)
{
layerIndex = 0;
}
else if (height <= 0.250f)
{
layerIndex = 1;
}
else if (height <= 0.375f)
{
layerIndex = 2;
}
else if (height <= 0.500f)
{
layerIndex = 3;
}
else if (height <= 0.625f)
{
layerIndex = 4;
}
else if (height <= 0.750f)
{
layerIndex = 5;
}
else if (height <= 0.875f)
{
layerIndex = 6;
}
else if (height <= 1f)
{
layerIndex = 7;
}
if (height <= 0.125f && height > 0.115f)
{
layerIndex = 8;
}
else if (height <= 0.250f && height > 0.240f)
{
layerIndex = 8;
}
else if (height <= 0.375f && height > 0.365f)
{
layerIndex = 8;
}
else if (height <= 0.500f && height > 0.490f)
{
layerIndex = 8;
}
else if (height <= 0.625f && height > 0.615f)
{
layerIndex = 8;
}
else if (height <= 0.750f && height > 0.740f)
{
layerIndex = 8;
}
else if (height <= 0.875f && height > 0.865f)
{
layerIndex = 8;
}
for (int i = 0; i < terrainLayers.Length; i++)
{
if (alphamaps.GetLength(2) <= i)
{
Debug.LogWarning("Terrain layer index " + i + " exceeds alphamaps array length.");
continue;
}
alphamaps[x, y, i] = (layerIndex == i) ? 1f : 0f;
}
}
}
terrain.terrainData.SetAlphamaps(0, 0, alphamaps);
terrain.Flush();
}
} |
(
