1 /******************************************************************************* 2 * Copyright 2011 See AUTHORS file. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 ******************************************************************************/ 16 17 package com.badlogic.gdx.tiledmappacker; 18 19 import java.awt.image.BufferedImage; 20 import java.io.IOException; 21 22 import javax.imageio.ImageIO; 23 24 import com.badlogic.gdx.files.FileHandle; 25 import com.badlogic.gdx.maps.tiled.TiledMapTileSet; 26 import com.badlogic.gdx.math.Vector2; 27 import com.badlogic.gdx.utils.IntMap; 28 29 /** Contains extra information that can only be calculated after a Tiled Map's tile set images are loaded. 30 * @author David Fraska */ 31 public class TileSetLayout { 32 33 public final BufferedImage image; 34 private final IntMap<Vector2> imageTilePositions; 35 private int numRows; 36 private int numCols; 37 public final int numTiles; 38 public final int firstgid; 39 40 /** Constructs a Tile Set layout. The tile set image contained in the baseDir should be the original tile set images before 41 * being processed by {@link TiledMapPacker} (the ones actually read by Tiled). 42 * @param tileset the tile set to process 43 * @param baseDir the directory in which the tile set image is stored */ 44 protected TileSetLayout (int firstgid, TiledMapTileSet tileset, FileHandle baseDir) throws IOException { 45 int tileWidth = tileset.getProperties().get("tilewidth", Integer.class); 46 int tileHeight = tileset.getProperties().get("tileheight", Integer.class); 47 int margin = tileset.getProperties().get("margin", Integer.class); 48 int spacing = tileset.getProperties().get("spacing", Integer.class); 49 50 this.firstgid = firstgid; 51 52 image = ImageIO.read(baseDir.child(tileset.getProperties().get("imagesource", String.class)).read()); 53 54 imageTilePositions = new IntMap<Vector2>(); 55 56 // fill the tile regions 57 int x, y, tile = 0; 58 numRows = 0; 59 numCols = 0; 60 61 int stopWidth = image.getWidth() - tileWidth; 62 int stopHeight = image.getHeight() - tileHeight; 63 64 for (y = margin; y <= stopHeight; y += tileHeight + spacing) { 65 for (x = margin; x <= stopWidth; x += tileWidth + spacing) { 66 if (y == margin) numCols++; 67 imageTilePositions.put(tile, new Vector2(x, y)); 68 tile++; 69 } 70 numRows++; 71 } 72 73 numTiles = numRows * numCols; 74 } 75 76 public int getNumRows () { 77 return numRows; 78 } 79 80 public int getNumCols () { 81 return numCols; 82 } 83 84 /** Returns the location of the tile in {@link TileSetLayout#image} */ 85 public Vector2 getLocation (int tile) { 86 return imageTilePositions.get(tile - firstgid); 87 } 88 } 89
