private void GenerateTerrain(int randomlayers = 0, int terrainGranularity = 0, float terrainStep = 0.0f, float terrainScale = 0.0f)
{
if (terrainGranularity <= 0)
{
terrainGranularity = TerrainGranularity;
}
if (terrainStep <= 0.0f)
{
terrainStep = TerrainStep;
}
if (terrainScale <= 0.0f)
{
terrainScale = TerrainScale;
}
if (randomlayers <= 0)
{
ObservedTerrain.GenerateEmpty(terrainStep, terrainScale);
}
else
{
ObservedTerrain.GenerateRandom(terrainStep, terrainScale, randomlayers);
}
TerrainGranularity = terrainGranularity;
TerrainStep = terrainStep;
TerrainScale = terrainScale;
ObservedTerrain.Gridify(terrainGranularity);
TerrainMesh.Clear();
if (randomlayers <= 0)
{
return;
}
ObservedTerrain.Calculate();
ObservedTerrain.Triangulate();
ObservedTerrain.GetMeshData(out var vertices, out var indices, out var normals);
TerrainMesh.vertices = vertices;
TerrainMesh.normals = normals;
TerrainMesh.triangles = indices;
}
private void Update()
{
// Precache information
var mouse = Input.mousePosition;
var cam = Camera.main;
var center = cam.ScreenToWorldPoint(new Vector3(mouse.x, mouse.y, Vector3.Distance(cam.transform.position, transform.position) + BrushZCorretion));
var alpha = 0.0f;
// Clear terrain
if (Input.GetKeyDown(KeyCode.C))
{
ObservedTerrain.Clear();
ObservedTerrain.Calculate();
TerrainMesh.Clear();
}
// Terrain granularity adjustment
var incgran = Input.GetKeyDown(KeyCode.UpArrow);
var decgran = Input.GetKeyDown(KeyCode.DownArrow);
if (incgran ^ decgran)
{
if (incgran)
{
++TerrainGranularity;
}
if (decgran)
{
--TerrainGranularity;
}
if (TerrainGranularity < 1)
{
TerrainGranularity = 1;
}
ObservedTerrain.Gridify(TerrainGranularity);
ObservedTerrain.Calculate();
ObservedTerrain.Triangulate();
ObservedTerrain.GetMeshData(out var vertices, out var indices, out var normals);
TerrainMesh.Clear();
TerrainMesh.vertices = vertices;
TerrainMesh.normals = normals;
TerrainMesh.triangles = indices;
}
// If mouse is inside terrain bounds
if (TerrainCollider.bounds.Contains(center))
{
// Display brush with some alpha
alpha = 0.75f;
// Adjust brush
if (Input.GetKey(KeyCode.Q))
{
BrushRadius += 0.01f;
}
if (Input.GetKey(KeyCode.E))
{
BrushRadius -= 0.01f;
}
if (BrushRadius <= 0.1f)
{
BrushRadius = 0.1f;
}
BrushZCorretion += Input.mouseScrollDelta.y / 10.0f;
// Reset brush
if (Input.GetKeyDown(KeyCode.R))
{
BrushRadius = 1.0f;
BrushZCorretion = 0.0f;
}
// Build/Clear terrain
var build = Input.GetMouseButton(0);
var clear = Input.GetMouseButton(1);
if (build ^ clear)
{
if (build)
{
ObservedTerrain.Update(new Vector3(center.z, center.y, center.x), BrushRadius, +BrushDelta);
}
if (clear)
{
ObservedTerrain.Update(new Vector3(center.z, center.y, center.x), BrushRadius, -BrushDelta);
}
ObservedTerrain.Calculate();
ObservedTerrain.Triangulate();
ObservedTerrain.GetMeshData(out var vertices, out var indices, out var normals);
TerrainMesh.Clear();
TerrainMesh.vertices = vertices;
TerrainMesh.normals = normals;
TerrainMesh.triangles = indices;
}
}
// Apply brush adjustment
Brush.transform.position = center;
Brush.transform.localScale = new Vector3(BrushRadius, BrushRadius, BrushRadius);
BrushMaterial.SetColor("_Color", new Color(0.75f, 0.75f, 0.75f, alpha));
}