// Needed to compare two keys
public override bool Equals(object obj)
{
if (obj == null)
{
return(false);
}
TerrainKey tk = obj as TerrainKey;
return(x == tk.x && z == tk.z);
}
Terrain getTerrain(TerrainKey tk)
{
if (!tk.isValid())
{
return(null);
}
if (terrainDictionary[tk].gameObject == null)
{
return(null);
}
return(terrainDictionary[tk].terrain);
}
void setNeighbors(TerrainKey tk)
{
if (!tk.isValid())
{
return;
}
Terrain left = getTerrain(new TerrainKey(tk.x - 1, tk.z));
Terrain top = getTerrain(new TerrainKey(tk.x, tk.z + 1));
Terrain right = getTerrain(new TerrainKey(tk.x + 1, tk.z));
Terrain bottom = getTerrain(new TerrainKey(tk.x, tk.z - 1));
getTerrain(tk).SetNeighbors(left, top, right, bottom);
}
// Called by player objects
public static void reportLocation(Vector3 pos)
{
if (instance == null)
{
return;
}
TerrainKey key = new TerrainKey(pos);
if (!key.isValid())
{
Debug.Log("Player outside terrain area");
return;
}
// Mark neighbors as being needed
TerrainKey[] neighbors = instance.terrainDictionary[key].neighbors;
for (int i = 0; i < neighbors.Length; i++)
{
key = neighbors[i];
instance.terrainDictionary[key].lastNeeded = Time.timeSinceLevelLoad + 1.0f;
}
}
// What tile keys are around us?
public TerrainKey[] getNeighbors()
{
if (!isValid())
{
Debug.Log("Calling getNeighbors with invalid key");
return(new TerrainKey[] { });
}
TerrainKey left = new TerrainKey(x - 1, z);
TerrainKey right = new TerrainKey(x + 1, z);
TerrainKey top = new TerrainKey(x, z + 1);
TerrainKey topleft = new TerrainKey(x - 1, z + 1);
TerrainKey topright = new TerrainKey(x + 1, z + 1);
TerrainKey bottom = new TerrainKey(x, z - 1);
TerrainKey bottomleft = new TerrainKey(x - 1, z - 1);
TerrainKey bottomright = new TerrainKey(x + 1, z - 1);
if (left.isValid())
{
if (right.isValid())
{
if (top.isValid())
{
if (bottom.isValid()) // Return all
{
return new TerrainKey[] { topleft, top, topright, left, this, right, bottomleft, bottom, bottomright }
}
;
else // Remove bottom
{
return new TerrainKey[] { topleft, top, topright, left, this, right }
};
}
else
{
if (bottom.isValid()) // Remove top
{
return new TerrainKey[] { left, this, right, bottomleft, bottom, bottomright }
}
;
}
}
else
{
if (top.isValid())
{
if (bottom.isValid()) // Remove right
{
return new TerrainKey[] { topleft, top, left, this, bottomleft, bottom }
}
;
else // Remove right and bottom
{
return new TerrainKey[] { topleft, top, left, this }
};
}
else
{
if (bottom.isValid()) // Remove right and top
{
return new TerrainKey[] { left, this, bottomleft, bottom }
}
;
}
}
}
else
{
if (right.isValid())
{
if (top.isValid())
{
if (bottom.isValid()) // Remove left
{
return new TerrainKey[] { top, topright, this, right, bottom, bottomright }
}
;
else // Remove left and bottom
{
return new TerrainKey[] { top, topright, this, right }
};
}
else
{
if (bottom.isValid()) // Remove left and top
{
return new TerrainKey[] { this, right, bottom, bottomright }
}
;
}
}
}
// Some cases are left out because we should never be less than size 3
Debug.Log("xMax or zMax cannot be less than 3");
return(new TerrainKey[] { });
}
