private void PlaceTrees(List <Vector3> placementPositions, TerrainLookup terrainLookup)
{
var treeInstances = new Dictionary <Terrain, List <TreeInstance> >();
for (var i = 0; i < placementPositions.Count; i++)
{
var terrain = terrainLookup.GetTerrain(placementPositions[i]);
var treePositionOnTerrain = GetTreePosition(terrain, placementPositions[i]);
var protoIndex = UnityEngine.Random.Range(0,
_vegetationData.Count); //TODO: Added Weighted Probability based on Tree Probability value - Risul
var treeInstance = _vegetationData.GetObjectAt(protoIndex);
if (treeInstances.TryGetValue(terrain, out var trees) == false)
{
trees = new List <TreeInstance>();
treeInstances.Add(terrain, trees);
}
var proportionalScale = UnityEngine.Random.Range(treeInstance.MinScale, treeInstance.MaxScale);
var tree = new TreeInstance
{
position = treePositionOnTerrain,
rotation = UnityEngine.Random.Range(treeInstance.MinRotation,
treeInstance.MaxRotation),
prototypeIndex = protoIndex,
color = Color.Lerp(treeInstance.Color1,
treeInstance.Color2, UnityEngine.Random.Range(0, 1)),
lightmapColor = treeInstance.LightColor,
heightScale = proportionalScale,
widthScale = proportionalScale
};
trees.Add(tree);
}
foreach (var treesPerTerrain in treeInstances)
{
treesPerTerrain.Key.terrainData.treeInstances = treesPerTerrain.Value.ToArray();
}
}
public void PlaceGrass(List <Vector3> placementPositions, int detailLayerIndex, TerrainLookup terrainLookup)
{
var terrainDetail = new Dictionary <Terrain, int[, ]>();
for (var i = 0; i < placementPositions.Count; i++)
{
var terrain = terrainLookup.GetTerrain(placementPositions[i]);
if (terrainDetail.TryGetValue(terrain, out var detailData) == false)
{
detailData = new int[terrain.terrainData.detailWidth, terrain.terrainData.detailHeight];
terrainDetail.Add(terrain, detailData);
}
var detailCord = GetDetailCoordinate(terrain, placementPositions[i]);
detailData[detailCord.y, detailCord.x] = 1;
}
foreach (var terrain in terrainDetail)
{
terrain.Key.terrainData.SetDetailLayer(0, 0, detailLayerIndex, terrain.Value);
}
}