// Method creates meshes of all objects per biome
List <BiomeMesh> BuildMeshes()
{
// Create a new list of all meshes on the terrain
List <BiomeMesh> biomeMeshes = new List <BiomeMesh>();
// Loop through all biomes
for (int i = 0; i < biomes.Length; i++)
{
// For each new biome, add a new 2 dimensional list of gameobjects (for each terrainobject their exists a list of gameobject holding meshes of that object)
worldObjects.Add(new List <List <GameObject> >());
// Create a new biomemesh which holds the meshes and other details for the current biome
BiomeMesh biomeMesh = new BiomeMesh();
// Loop through each of the objects added to the biome
for (int j = 0; j < biomes[i].biomeObjects.Length; j++)
{
// Get all parameters that were set on that specific terrain object
GameObject obj = biomes[i].biomeObjects[j].prefab;
float occurance = biomes[i].biomeObjects[j].occurance;
float minScale = biomes[i].biomeObjects[j].minScale;
float maxScale = biomes[i].biomeObjects[j].maxScale;
float minRot = biomes[i].biomeObjects[j].minRotation;
float maxRot = biomes[i].biomeObjects[j].maxRotation;
Mesh[] subMeshes = GetSubmeshes(obj);
// Add a mesh to the current biome adding also its details
biomeMesh.AddMesh(GetSubmeshes(obj), occurance, objectPerTile, minScale, maxScale, minRot, maxRot);
// Add to the worldObjects list a new list of GameObjects that holds on the first place the prefab mesh. (Is used to instantiate new ones from)
worldObjects[i].Add(new List <GameObject>());
biomes[i].biomeObjects[j].emptyPrefab.GetComponent <TerrainObject>().numVerticesPerObject = new List <int>();
for (int k = 0; k < subMeshes.Length; k++)
{
biomes[i].biomeObjects[j].emptyPrefab.GetComponent <TerrainObject>().numVerticesPerObject.Add(subMeshes[k].vertexCount);
}
worldObjects[i][j].Add(biomes[i].biomeObjects[j].emptyPrefab);
}
// Add the biomeMesh to the list of all biomeMeshes
biomeMeshes.Add(biomeMesh);
}
return(biomeMeshes);
}
// Method that generates each of the Objects on the terrain
IEnumerator GenerateBiomeAttributes()
{
// Index to keep track of how much time it takes
float timeSinceUpdate = Time.realtimeSinceStartup;
// Loop through each grid tile in the world
for (int i = 0; i < chunks.Count; i++)
{
for (int k = 0; k < chunks[i].tiles.Count; k++)
{
GridTile tile = chunks[i].tiles[k];
// If the grid tile is under the water level, don't do anything.
if (tile == null)
{
continue;
}
if (tile.position.y < waterLevel)
{
continue;
}
// Get all Meshes with parameters of the biome
BiomeMesh curBiomeMesh = biomeMeshes[Mathf.FloorToInt(tile.biome)];
List <float> occurances = curBiomeMesh.occurance;
int objectsPerTile = curBiomeMesh.objectsPerTile * tileSize / 20;
if (objectsPerTile < 1)
{
objectPerTile = 1;
}
List <float> minScale = curBiomeMesh.minScale;
List <float> maxScale = curBiomeMesh.maxScale;
List <float> minRot = curBiomeMesh.minRot;
List <float> maxRot = curBiomeMesh.maxRot;
for (int l = 0; l < objectsPerTile; l++)
{
// create a random variable between 0 and 1
float choice = (float)rand.NextDouble();
// Create a lower and upper limit
float lower = 0;
float upper = 0;
for (int j = 0; j < occurances.Count; j++)
{
// Add the occurance of the current object to the upper limit
upper += occurances[j];
// If the random variable is between upper and lower limit generate that object
if (choice < upper * tileSize / 20 && choice > lower * tileSize / 20)
{
// Determine a random scale and rotation, based on the min and max set by the user
float scale = minScale[j] + (float)rand.NextDouble() * (maxScale[j] - minScale[j]);
float rot = minRot[j] + (float)rand.NextDouble() * (maxRot[j] - minRot[j]);
Vector3 pos = tile.position + Vector3.right * tileSize * ((float)rand.NextDouble() - 0.5f) + Vector3.forward * tileSize * ((float)rand.NextDouble() - 0.5f);
// Generate the object
GenerateObject(pos, Quaternion.Euler(0, rot, 0), Vector3.one * scale, Mathf.FloorToInt(tile.biome), j, tile, chunks[i]);
// Break the loop for this grid tile
break;
}
// Set the current upper to the lower limit
lower = upper;
}
}
// index is bigger than the set value wait for one frame update
if (Time.realtimeSinceStartup - timeSinceUpdate > 1f / 10)
{
yield return(null);
timeSinceUpdate = Time.realtimeSinceStartup;
}
}
for (int biome = 0; biome < biomes.Length; biome++)
{
for (int objs = 0; objs < worldObjects[biome].Count; objs++)
{
List <GameObject> curGameObjectList = worldObjects[biome][objs];
if (curGameObjectList.Count < 2 && !curGameObjectList[curGameObjectList.Count - 1].GetComponent <TerrainObject>().hasReloaded)
{
continue;
}
curGameObjectList[curGameObjectList.Count - 1].GetComponent <TerrainObject>().verticesNow = 65001;
}
}
}
// When done, be sure the check if all meshes have been updated
BuildMeshesAll();
}
