/// <summary>
/// Returns a grid position of a given tile position
/// </summary>
/// <param name="row">Tile row index</param>
/// <param name="column">Tile column index</param>
/// <param name="gridRow">Returns the grid row index</param>
/// <param name="gridColumn">Returns the grid column index</param>
public void ConvertTileToGridPosition(int row, int column, out int gridRow, out int gridColumn)
{
gridRow = (int)Math.Floor((double)row / (double)TileRowCount);
gridColumn = (int)Math.Floor((double)column / (double)TileColumnCount);
if (TileMathHelper.IsOutOfRange(gridRow, gridColumn, GridRowCount, GridColumnCount))
{
gridRow = TileMathHelper.FixTileIndex(gridRow, GridRowCount);
gridColumn = TileMathHelper.FixTileIndex(gridColumn, GridColumnCount);
}
}
/// <summary>
/// Determine all tiles on screen based on the given viewport
/// </summary>
/// <param name="viewportWidth">Viewport width in pixel</param>
/// <param name="viewportHeight">Viewport height in pixel</param>
/// <returns>Returns a flatten byte array which represants the tiles</returns>
public Tile[] GetTileMapInScreen(int viewportWidth, int viewportHeight)
{
ScreenWidth = viewportWidth;
ScreenHeight = viewportHeight;
int screenColumnCount = (viewportWidth / tileSize);
int screenRowCount = (viewportHeight / tileSize);
Tile[] tilesInScreen = new Tile[screenRowCount * screenColumnCount];
int posRow = tileRow + (screenRowCount / 2);
int negRow = tileRow - (screenRowCount / 2);
int posColumn = tileColumn + (screenColumnCount / 2);
int negColumn = tileColumn - (screenColumnCount / 2);
int rowIndex = 0;
for (int r = negRow; r < posRow; r++)
{
int columnIndex = 0;
for (int c = negColumn; c < posColumn; c++)
{
int newMapIndex = CurrentMapIndex;
int realRow = r;
int realColumn = c;
if (TileMathHelper.IsOutOfRange(r, c, TileRowCount, TileColumnCount))
{
newMapIndex = TileMathHelper.GetMapIndex(r, c, TileRowCount, TileColumnCount, newMapIndex);
realRow = TileMathHelper.FixTileIndex(r, TileRowCount);
realColumn = TileMathHelper.FixTileIndex(c, TileColumnCount);
}
//GetValues and merge
if (newMapIndex < 0)
{
tilesInScreen[TileMathHelper.ToIndex(rowIndex, columnIndex++, screenColumnCount)] = new Tile(ushort.MaxValue, 255);
int newGridRow = (int)Math.Floor((double)r / (double)TileRowCount);
int newGridColumn = (int)Math.Floor((double)c / (double)TileColumnCount);
GridGenerationIsSlow?.Invoke(this, new GridEventArgs(newGridRow, newGridColumn, GridRow, GridColumn, false));
}
else
{
tilesInScreen[TileMathHelper.ToIndex(rowIndex, columnIndex++, screenColumnCount)] = maps[newMapIndex].MapSurface[TileMathHelper.ToIndex(realRow, realColumn, TileColumnCount)];
}
}
rowIndex++;
}
return(tilesInScreen);
}
/// <summary>
/// Initzializes a new streamed tile map
/// </summary>
/// <param name="spawnTileRow">Tile row index</param>
/// <param name="spawnTileColumn">Tile column index</param>
/// <param name="gridColumnCount">Number of grid columns</param>
/// <param name="gridRowCount">Number of grid rows</param>
/// <param name="tileRowCount">Number of tile rows per grid</param>
/// <param name="tileColumnCount">Number of tile columns per grid</param>
/// <param name="tileSize">Tile size in pixel</param>
/// <param name="maps">Loaded grids</param>
public StreamedTileMap(int spawnTileRow, int spawnTileColumn, int gridColumnCount, int gridRowCount, int tileRowCount, int tileColumnCount, int tileSize, List <TileMapPart> maps)
{
this.maps = maps;
this.gridColumnCount = gridColumnCount;
this.gridRowCount = gridRowCount;
this.tileSize = tileSize;
this.tileRowCount = tileRowCount;
this.tileColumnCount = tileColumnCount;
currentMapIndex = 4;
tileRow = spawnTileRow;
tileColumn = spawnTileColumn;
gridRow = (int)Math.Floor((double)spawnTileRow / (double)tileRowCount);
gridColumn = (int)Math.Floor((double)spawnTileColumn / (double)tileColumnCount);
gridRow = TileMathHelper.FixTileIndex(gridRow, gridRowCount);
gridColumn = TileMathHelper.FixTileIndex(gridColumn, gridColumnCount);
}
/// <summary>
/// Create the StreamedTileMap from the generated grids
/// </summary>
/// <param name="maps">Current grid with all it's surrounding grids</param>
/// <param name="suroundingGrids">Ids of all surrounding grids</param>
/// <param name="gridsPerRow">Number grids per row</param>
/// <param name="streamedTileMap">A reference to a streamedTileMap</param>
private void CreateTileMapParts(Tile[][] maps, List <ObjectTile>[] objectTiles, int[] suroundingGrids, int gridsPerRow, StreamedTileMap streamedTileMap)
{
//create TileMapPart
for (int i = 0; i < maps.Length; i++)
{
int gridId = suroundingGrids[i];
int gridRow;
int gridColumn;
TileMathHelper.ToPosition(gridId, gridsPerRow, out gridRow, out gridColumn);
gridRow = TileMathHelper.FixTileIndex(gridRow, gridsPerRow);
gridColumn = TileMathHelper.FixTileIndex(gridColumn, gridsPerRow);
TileMapPart part = new TileMapPart(gridId, maps[i], null, objectTiles[i].ToArray(), gridColumn, gridRow);
streamedTileMap.Add(part);
}
}
/// <summary>
/// Initzializes a new streamed tile map
/// </summary>
/// <param name="generator">Tile map generator</param>
/// <param name="spawnTileRow">Tile row index</param>
/// <param name="spawnTileColumn">Tile column index</param>
/// <param name="gridColumnCount">Number of grid columns</param>
/// <param name="gridRowCount">Number of grid rows</param>
/// <param name="tileRowCount">Number of tile rows per grid</param>
/// <param name="tileColumnCount">Number of tile columns per grid</param>
/// <param name="tileSize">Tile size in pixel</param>
public StreamedTileMap(TileMapGenerator generator, int spawnTileRow, int spawnTileColumn, int gridColumnCount, int gridRowCount, int tileRowCount, int tileColumnCount, int tileSize)
{
maps = new List <TileMapPart>();
this.gridColumnCount = gridColumnCount;
this.gridRowCount = gridRowCount;
this.tileSize = tileSize;
this.tileRowCount = tileRowCount;
this.tileColumnCount = tileColumnCount;
this.generator = generator;
currentMapIndex = 4;
tileRow = spawnTileRow;
tileColumn = spawnTileColumn;
gridRow = (int)Math.Floor((double)spawnTileRow / (double)tileRowCount);
gridColumn = (int)Math.Floor((double)spawnTileColumn / (double)tileColumnCount);
gridRow = TileMathHelper.FixTileIndex(gridRow, gridRowCount);
gridColumn = TileMathHelper.FixTileIndex(gridColumn, gridColumnCount);
}
/// <summary>
/// Create a circular area to a given map
/// </summary>
/// <param name="map">The map where the area should be placed on</param>
/// <param name="rowIndex">Tile row index</param>
/// <param name="columnIndex">Tile column index</param>
/// <param name="rowCount">Number of rows per grid</param>
/// <param name="columnCount">Number of columns per grid</param>
/// <param name="radius">Radius of the circle</param>
/// <param name="tileSize">Size of a tile in pixel</param>
/// <param name="metersPerTile">Size of a tile in meter</param>
/// <param name="tileIdValue">Tile id value for the circular area</param>
/// <param name="tileFlag">Tile flag</param>
/// <param name="allowEdgeManipulation">Allows areas to overlap tiles from other maps</param>
/// <returns>Returns the number of changed tiles</returns>
private int CreateCircleArea(Tile[] map, int rowIndex, int columnIndex, int rowCount, int columnCount, int radius, int tileSize, float metersPerTile, ushort tileIdValue, byte tileFlag, bool allowEdgeManipulation)
{
int modified = 0;
int minRadiusTile = (int)Math.Ceiling(radius / metersPerTile);
int minRadiusPx = minRadiusTile * tileSize;
int x = columnIndex * tileSize;
int y = rowIndex * tileSize;
for (int r = rowIndex - minRadiusTile; r < rowIndex + minRadiusTile; r++)
{
for (int c = columnIndex - minRadiusTile; c < columnIndex + minRadiusTile; c++)
{
int realRow = r;
int realColumn = c;
if (TileMathHelper.IsOutOfRange(r, c, rowCount, columnCount))
{
if (allowEdgeManipulation)
{
realRow = TileMathHelper.FixTileIndex(r, rowCount);
realColumn = TileMathHelper.FixTileIndex(c, columnCount);
}
else
{
continue;
}
}
int distance = TileMathHelper.GetDistance(x, y, c * tileSize, r * tileSize);
if (distance <= minRadiusPx)
{
int id = TileMathHelper.ToIndex(realRow, realColumn, columnCount);
if (map[id].Id == 0)
{
map[id] = new Tile(tileIdValue, tileFlag);
modified++;
}
}
}
}
return(modified);
}
/// <summary>
/// Sets a tile value
/// </summary>
/// <param name="row">Tile row index</param>
/// <param name="column">Tile column index</param>
/// <param name="value">New tile value</param>
public bool SetTileValue(int row, int column, Tile value)
{
int newGridRow;
int newGridColumn;
ConvertTileToGridPosition(row, column, out newGridRow, out newGridColumn);
int tileMapId = TileMathHelper.ToIndex(newGridRow, newGridColumn, GridColumnCount);
int tileRow = TileMathHelper.FixTileIndex(row, TileRowCount);
int tileColumn = TileMathHelper.FixTileIndex(column, TileColumnCount);
int currentMapIndex = maps.FindIndex(m => m.Id == tileMapId);
if (currentMapIndex != -1)
{
maps[currentMapIndex].MapSurface[TileMathHelper.ToIndex(tileRow, tileColumn, TileColumnCount)] = value;
return(true);
}
return(false);
}
/// <summary>
/// Updates the grids based one the given tile location
/// </summary>
/// <param name="currentTileRow">Tile row index</param>
/// <param name="currentTileColumn">Tile column index</param>
public void Update(int currentTileRow, int currentTileColumn)
{
int newGridRow;
int newGridColumn;
ConvertTileToGridPosition(currentTileRow, currentTileColumn, out newGridRow, out newGridColumn);
currentMapId = TileMathHelper.ToIndex(newGridRow, newGridColumn, GridColumnCount);
tileRow = TileMathHelper.FixTileIndex(currentTileRow, TileRowCount);
tileColumn = TileMathHelper.FixTileIndex(currentTileColumn, TileColumnCount);
TryMapUpdate(newGridRow, newGridColumn);
CurrentMapIndex = maps.FindIndex(m => m.Id == currentMapId);
if ((newGridRow != GridRow || newGridColumn != GridColumn) && !newMapRequested)
{
GridChangeRequested?.Invoke(this, new GridEventArgs(GridRow, GridColumn, maps[4].GridRow, maps[4].GridColumn, false));
gridRow = newGridRow;
gridColumn = newGridColumn;
Resize(currentTileRow, currentTileColumn);
}
}
/// <summary>
/// Create a circular area to a given map
/// </summary>
/// <param name="mapIndex">Index of the map</param>
/// <param name="maps">Current grids</param>
/// <param name="edgeOverrides">Current edge override maps</param>
/// <param name="rowIndex">Tile row index</param>
/// <param name="columnIndex">Tile column index</param>
/// <param name="rowCount">Number of rows per grid</param>
/// <param name="columnCount">Number of columns per grid</param>
/// <param name="radius">Radius of the circle</param>
/// <param name="tileSize">Size of a tile in pixel</param>
/// <param name="metersPerTile">Size of a tile in meter</param>
/// <param name="tileIdValue">Tile id value for the circular area</param>
/// <param name="tileFlags">Tile flags</param>
/// <param name="allowEdgeOverflow">Allows areas to overlap tiles from other maps</param>
/// <param name="useEdgeNoise">Adds edge noise to the generated area</param>
/// <returns>Returns the number of changed tiles</returns>
private int CreateCircleArea(int mapIndex, Tile[][] maps, Tile[][] edgeOverrides, int rowIndex, int columnIndex, int rowCount, int columnCount, int radius, int tileSize, float metersPerTile, ushort tileIdValue, byte tileFlags, bool allowEdgeOverflow, bool useEdgeNoise)
{
int modified = 0;
int minRadiusTile = (int)Math.Ceiling(radius / metersPerTile);
int minRadiusPx = minRadiusTile * tileSize;
int x = columnIndex * tileSize;
int y = rowIndex * tileSize;
for (int r = rowIndex - minRadiusTile; r < rowIndex + minRadiusTile; r++)
{
for (int c = columnIndex - minRadiusTile; c < columnIndex + minRadiusTile; c++)
{
int currentMapIndex = mapIndex;
int realRow = r;
int realColumn = c;
if (TileMathHelper.IsOutOfRange(r, c, rowCount, columnCount))
{
if (allowEdgeOverflow)
{
currentMapIndex = TileMathHelper.GetMapIndex(r, c, rowCount, columnCount, currentMapIndex);
if (currentMapIndex >= 0)
{
realRow = TileMathHelper.FixTileIndex(r, rowCount);
realColumn = TileMathHelper.FixTileIndex(c, columnCount);
}
else
{
continue;
}
}
else
{
continue;
}
}
int distance = TileMathHelper.GetDistance(x, y, c * tileSize, r * tileSize);
if (distance <= minRadiusPx)
{
int id = TileMathHelper.ToIndex(realRow, realColumn, columnCount);
if (mapIndex == currentMapIndex)
{
if (maps[currentMapIndex][id].Id == 0)
{
maps[currentMapIndex][id] = new Tile(tileIdValue, tileFlags);
modified++;
}
}
else
{
if (edgeOverrides[currentMapIndex][id].Id == 0)
{
edgeOverrides[currentMapIndex][id] = new Tile(tileIdValue, tileFlags);
}
}
}
}
}
return(modified);
}