/// <summary>
/// Updates the Watermap in this Rectangular region
/// </summary>
/// <param name="region">Region to update</param>
/// <param name="terrain">Used Terrain</param>
/// <param name="water">Used Water</param>
/// <returns>true if succesful</returns>
public bool UpdateWatermapForRegion(Rect region, Terrain terrain, Water water)
{
if (WaterlevelMap == null)
{
return(false);
}
for (int lx = (int)region.xMin; lx < (int)Mathf.Clamp(region.xMax, 0, WaterlevelMap.GetLength(0)); lx++)
{
for (int lz = (int)region.yMin; lz < (int)Mathf.Clamp(region.yMax, 0, WaterlevelMap.GetLength(1)); lz++)
{
float terrainHeight = terrain.SampleHeight(new Vector3(lx, 0, lz));
float delta = water.transform.position.y - terrainHeight;
if (delta < 0)
{
delta = 0;
}
WaterlevelMap[lx, lz] = delta;
}
}
for (int lx = (int)region.xMin; lx < (int)Mathf.Clamp(region.xMax, 0, WaterlevelMap.GetLength(0)); lx++)
{
for (int lz = (int)region.yMin; lz < (int)Mathf.Clamp(region.yMax, 0, WaterlevelMap.GetLength(1)); lz++)
{
UpdateRiverBankAt(new Vector2(lx, lz), terrain);
}
}
return(true);
}
/// <summary>
/// Checks for riverbank at this point and updates it
/// </summary>
/// <param name="pos">Point to check</param>
/// <param name="terrain">Terrain used</param>
private void UpdateRiverBankAt(Vector2 pos, Terrain terrain)
{
float heightAtPos = terrain.SampleHeight(new Vector3(pos.x, 0, pos.y));
float wLevel = WaterlevelMap[(int)pos.x, (int)pos.y];
if (wLevel > 0)
{
RiverbankMap.Remove(new Vector3(pos.x, heightAtPos, pos.y));
return;
}
bool isCurRiverbank = RiverbankMap.ContainsKey(new Vector3(pos.x, heightAtPos, pos.y));
// Check if the bordering tiles are outside the map or are not water.
// If so check if the current pos is designates as riverbank.
// If so remove the designation.
// Else we have at least one water pos around the current pos, therefore its a riverbank.
if ((((int)pos.x - 1 < 0 || (int)pos.y - 1 < 0 || (int)pos.x - 1 >= WaterlevelMap.GetLength(0) || (int)pos.y - 1 >= WaterlevelMap.GetLength(1)) || WaterlevelMap[(int)pos.x - 1, (int)pos.y - 1] == 0) &&
(((int)pos.x < 0 || (int)pos.y - 1 < 0 || (int)pos.x >= WaterlevelMap.GetLength(0) || (int)pos.y - 1 >= WaterlevelMap.GetLength(1)) || WaterlevelMap[(int)pos.x, (int)pos.y - 1] == 0) &&
(((int)pos.x + 1 < 0 || (int)pos.y - 1 < 0 || (int)pos.x + 1 >= WaterlevelMap.GetLength(0) || (int)pos.y - 1 >= WaterlevelMap.GetLength(1)) || WaterlevelMap[(int)pos.x + 1, (int)pos.y - 1] == 0) &&
(((int)pos.x + 1 < 0 || (int)pos.y < 0 || (int)pos.x + 1 >= WaterlevelMap.GetLength(0) || (int)pos.y >= WaterlevelMap.GetLength(1)) || WaterlevelMap[(int)pos.x + 1, (int)pos.y] == 0) &&
(((int)pos.x + 1 < 0 || (int)pos.y + 1 < 0 || (int)pos.x + 1 >= WaterlevelMap.GetLength(0) || (int)pos.y + 1 >= WaterlevelMap.GetLength(1)) || WaterlevelMap[(int)pos.x + 1, (int)pos.y + 1] == 0) &&
(((int)pos.x < 0 || (int)pos.y + 1 < 0 || (int)pos.x >= WaterlevelMap.GetLength(0) || (int)pos.y + 1 >= WaterlevelMap.GetLength(1)) || WaterlevelMap[(int)pos.x, (int)pos.y + 1] == 0) &&
(((int)pos.x - 1 < 0 || (int)pos.y + 1 < 0 || (int)pos.x - 1 >= WaterlevelMap.GetLength(0) || (int)pos.y + 1 >= WaterlevelMap.GetLength(1)) || WaterlevelMap[(int)pos.x - 1, (int)pos.y + 1] == 0) &&
(((int)pos.x - 1 < 0 || (int)pos.y < 0 || (int)pos.x - 1 >= WaterlevelMap.GetLength(0) || (int)pos.y >= WaterlevelMap.GetLength(1)) || WaterlevelMap[(int)pos.x - 1, (int)pos.y] == 0))
{
if (isCurRiverbank)
{
RiverbankMap.Remove(new Vector3(pos.x, heightAtPos, pos.y));
return;
}
}
else
{
if (!isCurRiverbank)
{
RiverbankMap.Add(new Vector3(pos.x, heightAtPos, pos.y), new ResourceSource(WaterResourceSourceWrapper, new Vector3(pos.x, heightAtPos, pos.y), ResourceType.Water, 0, true));
}
}
}
