Simple Tile Editor

src/com/editor/App.java

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+package com.editor;
+
+import javax.swing.SwingUtilities;
+
+public class App {
+
+	public static void main(String[] args) {
+		SwingUtilities.invokeLater(new Runnable() {
+			@Override
+			public void run() {
+				new MapEditor().setVisible(true);
+			}
+		});
+
+	}
+
+}

src/com/editor/Constants.java

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+package com.editor;
+
+public class Constants {
+
+	public static final int TILE_SIZE = 32;
+
+	private static final int SCREEN_COL = 28;
+	private static final int SCREEN_ROW = 20;
+
+	public static final int SCREEN_WIDTH = TILE_SIZE * SCREEN_COL;
+	public static final int SCREEN_HEIGHT = TILE_SIZE * SCREEN_ROW;
+
+}

src/com/editor/FileManager.java

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+package com.editor;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.HashMap;
+
+import javax.swing.ImageIcon;
+
+public class FileManager {
+	public static void savePalette(HashMap<Integer, ImageIcon> imageMap, String filePath) throws IOException {
+		try (BufferedWriter writer = new BufferedWriter(new FileWriter(filePath))) {
+			for (Integer key : imageMap.keySet()) {
+				ImageIcon icon = imageMap.get(key);
+				String path = icon.getDescription();
+				writer.write(key + ", " + path);
+				writer.newLine();
+			}
+		}
+	}
+
+	public static HashMap<Integer, ImageIcon> loadPalette(String filePath) throws IOException {
+		HashMap<Integer, ImageIcon> imageMap = new HashMap<>();
+		try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
+			String line;
+			while ((line = reader.readLine()) != null) {
+				String[] parts = line.split(", ");
+				int key = Integer.parseInt(parts[0]);
+				String path = parts[1];
+				ImageIcon icon = new ImageIcon(path);
+				icon.setDescription(path);
+				imageMap.put(key, icon);
+			}
+		}
+		return imageMap;
+	}
+
+	public static void saveMap(int[][] map, String filePath) throws IOException {
+		try (BufferedWriter writer = new BufferedWriter(new FileWriter(filePath))) {
+			for (int j = 0; j < map[0].length; j++) {
+				for (int i = 0; i < map.length; i++) {
+					writer.write(map[i][j] + " ");
+				}
+				writer.newLine();
+			}
+		}
+	}
+
+	public static int[][] loadMap(String filePath) throws IOException {
+		int rows = 0;
+		int cols = 0;
+
+		// First pass to determine the size of the map
+		try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
+			String line;
+			while ((line = reader.readLine()) != null) {
+				rows++;
+				String[] values = line.split(" ");
+				cols = Math.max(cols, values.length);
+			}
+		}
+
+		int[][] map = new int[rows][cols];
+
+		// Second pass to populate the map
+		try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
+			String line;
+			int row = 0;
+			while ((line = reader.readLine()) != null) {
+				String[] values = line.split(" ");
+				for (int col = 0; col < values.length; col++) {
+					map[row][col] = Integer.parseInt(values[col]);
+				}
+				row++;
+			}
+		}
+		return map;
+	}
+}