/*
* Get the next vertex that is past provided x.
* Returns -1 if at end of all land
*/
public int GetNextVertex(LandFrame frame, int vertex, float x)
{
Mesh mesh = frame.GetComponent <MeshFilter> ().mesh;
Vector3[] vertices = mesh.vertices;
float lastX = frame.transform.TransformPoint(vertices [vertex]).x; // Used to detect if we need to go into next frame
while (frame.transform.TransformPoint(vertices [vertex]).x < x)
{
if (lastX > frame.transform.TransformPoint(vertices [vertex]).x) // Check if we need to go into the next frame
{
if (frame.GetComponent <LandFrame> ().nextFrame == null) // If we are at the end return -1
{
return(-1);
}
frame = frame.GetComponent <LandFrame> ().nextFrame.GetComponent <LandFrame> (); // Get the next frame
mesh = frame.GetComponent <MeshFilter> ().mesh;
vertices = mesh.vertices;
vertex = 1;
}
else // If we are in the same frame, then return next vertex
{
lastX = frame.transform.TransformPoint(vertices [vertex]).x;
frame.GetComponent <LandFrame> ().activityStrip [vertex] = 1;
vertex++;
}
}
return(vertex);
}
private MeshRenderer meshRenderer; // Renderer
/*
* Generate a structure starting at a provided point
*/
public void GenerateStructure(LandFrame frame, int vertex)
{
//this.frame = frame; // Not currently being used
Mesh mesh = frame.GetComponent <MeshFilter> ().mesh;
Vector3[] vertices = mesh.vertices;
Vector3 anchor = frame.transform.TransformPoint(vertices [vertex]);
Vector2 point = new Vector2(anchor.x, anchor.y);
point = SpawnStaircase(point);
bool keepSpawning = true;
int numPieces = 0;
int lastVertex = 0;
List <Vector3> backingVertices = new List <Vector3> ();
backingVertices.Add(anchor);
while (keepSpawning)
{
numPieces++;
int id = Random.Range(0, 100);
if (numPieces > 5 && Random.Range(0, 3) == 0) // Encourage more down-staircases if the structure is big
{
id = 99;
}
if ((id == 0 && id < 15) || numPieces == 1) // staircase up
{
point = SpawnStaircase(point);
}
else if (id >= 15 && id < 85) // platform
{
point = SpawnPlatform(point);
}
else if (id >= 85 && id < 100) // staircase down
{
point = SpawnStaircaseDown(point);
}
backingVertices.Add(new Vector3(point.x, point.y, 0));
vertex = GetNextVertex(frame, vertex, point.x);
if (vertex == -1)
{
keepSpawning = false;
}
else
{
if (lastVertex > vertex)
{
frame = frame.GetComponent <LandFrame> ().nextFrame.GetComponent <LandFrame> ();
mesh = frame.GetComponent <MeshFilter> ().mesh;
vertices = mesh.vertices;
}
lastVertex = vertex;
if (frame.transform.TransformPoint(vertices [vertex]).y > point.y)
{
keepSpawning = false;
}
}
}
float yB = backingVertices [backingVertices.Count - 1].y;
if (yB > backingVertices [0].y)
{
yB = backingVertices [0].y;
}
backingVertices.Add(new Vector3(backingVertices [backingVertices.Count - 1].x, yB - 30, 0));
backingVertices.Insert(0, new Vector3(backingVertices[0].x, yB - 30, 0));
int size = backingVertices.Count;
int backPoint = size - 2;
for (int i = 3; i < size; i += 2)
{
backPoint -= 2;
backingVertices.Add(new Vector3(backingVertices [backPoint].x, yB - 30, 0));
}
Vector3[] backVertices = backingVertices.ToArray();
Vector2[] uvs = new Vector2[backVertices.Length];
for (int i = 0; i < uvs.Length; i++) // Assign all uvs, just copy vertices
{
uvs[i] = new Vector2(backVertices[i].x, backVertices[i].y);
}
int[] triangles = new int[(backVertices.Length - 2) * 3]; // Create triangles
int refPoint = size - 1;
int back = refPoint + 1;
int forward = refPoint - 1;
for (int i = 0; i < triangles.Length;)
{
triangles [i] = forward - 1;
triangles [i + 1] = forward--;
triangles [i + 2] = refPoint;
i += 3;
if (i >= triangles.Length)
{
break;
}
triangles [i] = forward - 1;
triangles [i + 1] = forward--;
triangles [i + 2] = refPoint;
i += 3;
if (i >= triangles.Length)
{
break;
}
triangles [i] = forward;
triangles [i + 1] = refPoint++;
triangles [i + 2] = back++;
i += 3;
}
mesh = new Mesh(); // New mesh
meshFilter = (MeshFilter)gameObject.AddComponent(typeof(MeshFilter)); // Add mesh filter
meshRenderer = (MeshRenderer)gameObject.AddComponent(typeof(MeshRenderer)); // Add mesh renderer
meshFilter.mesh = mesh;
mesh.vertices = backVertices; // Assign data to mesh
mesh.uv = uvs;
mesh.triangles = triangles;
mesh.RecalculateNormals();
meshRenderer.sharedMaterial = material;
}
