public MapMesh generateTerrain(Map map, List <List <Vector2> > riverPoints, TriangleNet.Mesh mapTriangulation)
{
MapMesh terrain = new MapMesh();
List <Vector3> landVertices = new List <Vector3>();
List <Vector3> oceanVertices = new List <Vector3>();
List <Vector3> innerWaterVertices = new List <Vector3>();
Dictionary <Vector2, float> mapVerticesHeights = new Dictionary <Vector2, float>();
foreach (Triangle triangle in mapTriangulation.Triangles)
{
List <MapVertex> mapVertices = triangle.vertices
.Select(vertex => vertex is MapVertex ? (MapVertex)vertex : convertToMapVertex(vertex))
.Reverse()
.ToList();
List <Vector3> underWaterShifts = new List <Vector3>(new Vector3[3]);
List <bool> needsShoreAdjustments = new List <bool>(new bool[3]);
if (mapVertices.Any(mapVertice => mapVertice.hex == null))
{
for (int i = 0; i < mapVertices.Count; i++)
{
if (mapVertices[i].hex != null)
{
needsShoreAdjustments[i] = true;
}
}
}
MapVertex shoreMapVertex = mapVertices.FirstOrDefault(mapVertex => mapVertex.hex != null && (mapVertex.hex.biome == null || mapVertex.hex.biome.name != "Fresh lake"));
if (shoreMapVertex != null)
{
Vector2 shoreCenter = HexMathHelper.hexToWorldCoords(new Vector2(shoreMapVertex.hex.x, shoreMapVertex.hex.y), this.hexSize);
//if shore triangle push it underwater to create shore slope
for (int i = 0; i < mapVertices.Count; i++)
{
if (mapVertices[i].hex == null)
{
underWaterShifts[i] = (new Vector2((float)mapVertices[i].x, (float)mapVertices[i].y) - shoreCenter).normalized * 0.3f;
underWaterShifts[i] += new Vector3(0, 0, 0.03f);
}
}
}
List <Vector3> triangleVertices = new List <Vector3>();
for (int i = 0; i < mapVertices.Count; i++)
{
float height = TerrainHelper.getHeight(heightSeed, mapVertices[i], this.hexSize, elevatedHeightmap, mountainHeightmap);
Vector3 newVertex = mapVertices[i].toVector3() + underWaterShifts[i] + new Vector3(0, 0, height);
if (!mapVerticesHeights.ContainsKey(newVertex) && needsShoreAdjustments[i])
{
newVertex.z = Random.Range(0.08f, 0.13f);
mapVerticesHeights[newVertex] = newVertex.z;
}
if (mapVertices[i].isRiver && (mapVertices[i].hex == null || !mapVertices[i].hex.hasTag(RiverHelper.FRESH_LAKE_TAG)))
{
newVertex += TerrainHelper.getRiverHeightAdjustment(newVertex);
}
triangleVertices.Add(newVertex);
}
if (mapVertices.All(mapVertex => mapVertex.hex == null))
{
oceanVertices.AddRange(triangleVertices);
}
else if (mapVertices.All(mapVertex => mapVertex.isRiver))
{
innerWaterVertices.AddRange(triangleVertices);
}
else if (mapVertices.All(mapVertex => mapVertex.hex != null && mapVertex.hex.hasTag(RiverHelper.FRESH_LAKE_TAG)))
{
innerWaterVertices.AddRange(triangleVertices);
}
else
{
landVertices.AddRange(triangleVertices);
}
}
//smooth shore
for (int i = 0; i < landVertices.Count; i++)
{
Vector3 vertex = landVertices[i];
if (mapVerticesHeights.ContainsKey(vertex))
{
vertex.z = mapVerticesHeights[landVertices[i]];
landVertices[i] = vertex;
}
}
terrain.landMesh = this.createMesh("Land", landVertices);
terrain.oceanMesh = this.createMesh("Ocean", oceanVertices);
terrain.innerWaterMesh = this.createMesh("Lakes and Rivers", innerWaterVertices);
return(terrain);
}