/// <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> /// 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); }