Problemy ze skanerem Java (JFrame)
Próbuję użyć skanera do edycji poziomu mojej gry obrony wieży. Jednak nie zaktualizuje poziomu (obrazów kafelków) do pliku niestandardowego (0 to trawa 1 to kamień -1 to nic, itp.). Znalazłem błąd, ale jak go naprawić, co muszę dodać / zmienić, aby się tego pozbyć?
<code>java.lang.NullPointerException at Levels.loadLevels(Levels.java:11) at Window.define(Window.java:28) at Window.paintComponent(Window.java:44) </code>
wiersz 11:for(int y=0;y<Window.room.block.length;y++) {
linia 28:levels.loadLevels(new File("levels/level1.level"));
wiersz 44:define();
To jest plik skanera:
<code>import java.io.*; import java.util.*; public class Levels { public void loadLevels(File loadPath) { try { Scanner loadLevelsScanner = new Scanner(loadPath); while(loadLevelsScanner.hasNext()) { for(int y=0;y<Window.room.block.length;y++) { for(int x=0;x<Window.room.block[0].length;x++) { Window.room.block[y][x].groundID = loadLevelsScanner.nextInt(); } } for(int y=0;y<Window.room.block.length;y++) { for(int x=0;x<Window.room.block[0].length;x++) { Window.room.block[y][x].airID = loadLevelsScanner.nextInt(); } } } loadLevelsScanner.close(); } catch(Exception e) { } } } </code>
to jest plik okna:
<code>import javax.swing.*; import java.awt.*; import java.awt.image.*; import java.io.*; public class Window extends JPanel implements Runnable { public Thread thread = new Thread(this); public static Image[] tileset_ground = new Image[100]; public static Image[] tileset_air = new Image[100]; public static int myWidth, myHeight; public static boolean isFirst = true; public static Room room; public static Levels levels; public Window() { thread.start(); } public void define() { room = new Room(); levels = new Levels(); levels.loadLevels(new File("levels/level1.level")); for(int i=0;i<tileset_ground.length; i++) { tileset_ground[i] = new ImageIcon("resources/tileset_ground.png").getImage(); tileset_ground[i] = createImage(new FilteredImageSource(tileset_ground[i].getSource(), new CropImageFilter(0, 32 * i, 32, 32))); } for(int i=0;i<tileset_air.length; i++) { tileset_air[i] = new ImageIcon("resources/tileset_air.png").getImage(); tileset_air[i] = createImage(new FilteredImageSource(tileset_air[i].getSource(), new CropImageFilter(0, 32 * i, 32, 32))); } } public void paintComponent(Graphics g) { if(isFirst) { define(); isFirst = false; } g.clearRect(0, 0, getWidth(), getHeight()); room.draw(g); } public void run() { while(true) { if(!isFirst) { room.physic(); } repaint(); try { Thread.sleep(1); } catch(Exception e) { } } } } </code>
To jest plik pokoju:
<code>import java.awt.*; public class Room { public int worldWidth = 40; public int worldHeight = 20; public int blockSize = 32; public Block[][] block; public Room () { } public void define () { } public void physic () { } public void draw(Graphics g) { block = new Block[worldHeight][worldWidth]; for(int y=0;y<block.length;y++) { for(int x=0;x<block[0].length;x++) { block[y][x] = new Block(x * blockSize, y * blockSize, blockSize, blockSize, Value.groundGrass, Value.airAir); block[y][x].draw(g); } } } } </code>
to jest plik blokowy:
<code>import java.awt.*; public class Block extends Rectangle { public int groundID; public int airID; public Block(int x, int y, int width, int height, int groundID, int airID) { setBounds(x, y, width, height); this.groundID = groundID; this.airID = airID; } public void draw(Graphics g) { g.drawImage(Window.tileset_ground[groundID], x, y, width, height, null); if(airID != Value.airAir) { g.drawImage(Window.tileset_air[airID], x, y, width, height, null); } } } </code>
I wreszcie jest to plik niestandardowy, który skaner ma czytać:
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przepraszam za głupie pytanie, jestem początkującym.