hfix: corrigido erro com a renderizacao

Author: GustavoLR548

src/main/java/com/gustavolr/engine/GameEngine.java

@@ -1,8 +1,8 @@
 package com.gustavolr.engine;
 
+import java.awt.Color;
 import java.awt.Graphics;
 import java.awt.event.KeyEvent;
-import java.awt.image.BufferStrategy;
 
 import com.gustavolr.engine.game_loop.GameLoop;
 import com.gustavolr.engine.game_loop.GameLoopListener;
@@ -13,41 +13,55 @@ public final class GameEngine implements GameLoopListener{
 
     private final GameWindow window;
     private final GameInput input;
-    private final GameLoop gameLoop;
+
+    int x = 0;
+    int y = 0;
 
     public GameEngine() {
 
         this.input = new GameInput();
 
         this.window = new GameWindow("Pong");
         this.window.addKeyListener(input);
-        this.gameLoop = new GameLoop(this);
+        new GameLoop(this);
     }   
 
     @Override
     public void update() {
 
         if (GameInput.isKeyPressed(KeyEvent.VK_LEFT)) {
-            System.out.println("Ola");
+            x--;
+        }
+        else if (GameInput.isKeyPressed(KeyEvent.VK_RIGHT)) {
+            x++;
         }
+
+        if (GameInput.isKeyPressed(KeyEvent.VK_UP)) {
+            y--;
+        } else if (GameInput.isKeyPressed(KeyEvent.VK_DOWN)) {
+            y++;
+        }
+
+
+        System.out.println(x);
     }
 
     @Override
     public void render() {
 
-        BufferStrategy bs = this.window.getBufferStrategy();
-        if ( bs == null ) {
-            this.window.createBufferStrategy(3);
+        Graphics g = this.window.getWindowLayer();
+        if ( g == null ) 
             return;
-        }
+        
+        this.window.drawBackground(g);
+        
+        // Game Rendering goes here
 
-        Graphics layer = this.window.getGraphics();
+        g.setColor(Color.GREEN);
+        g.fillRect(x, y, 50, 50);
 
-        layer.dispose();
-        layer = bs.getDrawGraphics();
+        // Game Rendering stops here
 
-        layer.fillRect(50, 50, 100, 100);
-        
-        bs.show();
+        this.window.drawFinalScene(g);
     }
 }

src/main/java/com/gustavolr/engine/input/GameInput.java

@@ -40,7 +40,7 @@ public void keyReleased(KeyEvent k) {
     @Override
     public void keyTyped(KeyEvent arg0) {
         // TODO Auto-generated method stub
-        
+        System.out.println(arg0);
     }
 
 }

src/main/java/com/gustavolr/engine/window/GameWindow.java

@@ -4,6 +4,8 @@
 import java.awt.Graphics;
 import java.awt.Dimension;
 import java.awt.image.BufferedImage;
+import java.awt.Color;
+import java.awt.image.BufferStrategy;
 
 import javax.swing.JFrame;
 
@@ -27,12 +29,20 @@ public static short getWindowHeight() {
         return height;
     }
 
+    public static short getRealWindowWidth() {
+        return (short)(width * (short)scale);
+    }
+    
+    public static short getRealWindowHeight() {
+        return (short)(height * (short)scale);
+    }
+
     public static byte getWindowScale() {
         return scale;
     }
 
-    public static Graphics getGraphicsLayer() {
-        return bufferLayer.getGraphics();
+    public BufferedImage getBufferedImage() {
+        return bufferLayer;
     }
 
     public GameWindow(String frameName) {
@@ -44,6 +54,7 @@ public GameWindow(String frameName) {
 
     public GameWindow(int width, int height, int scale, String frameName) {
         GameWindow.width = (short)width;
+        System.out.println(height);
         GameWindow.height = (short)height;
         GameWindow.scale = (byte)scale;
 
@@ -58,7 +69,7 @@ public void initWindowFrame(String frameName) {
 
         windowFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
-        this.setPreferredSize(new Dimension(height*scale,width*scale));
+        this.setPreferredSize(new Dimension(width*scale,height*scale));
         windowFrame.add(this);
         windowFrame.pack(); // The pack method sizes the frame so that all its contents are at or above their preferred sizes
 
@@ -67,10 +78,39 @@ public void initWindowFrame(String frameName) {
 
         windowFrame.setVisible(true);
 
+        bufferLayer = new BufferedImage((int)width,(int)height, BufferedImage.TYPE_INT_RGB);
+
         // Set the icon for the frame
 		//Image icon = ImageIO.read(getClass().getResource("/icon.png"));
 		//windowFrame.setIconImage(icon);
     }
 
+    public Graphics getWindowLayer() {
+        BufferStrategy bs = this.getBufferStrategy();
+        if ( bs == null ) {
+            this.createBufferStrategy(3);
+            return null;
+        }
+
+        return bufferLayer.getGraphics();
+    }
+
+    public void drawBackground(Graphics g) {
+        
+        g.setColor(Color.BLACK);
+        g.fillRect(0, 0, GameWindow.getWindowWidth(), GameWindow.getWindowHeight());
+    }
+
+    public void drawFinalScene(Graphics g) {
+
+        BufferStrategy bs = this.getBufferStrategy();
+
+        g.dispose();
+        g = bs.getDrawGraphics();
+
+        g.drawImage(bufferLayer, 0, 0, width * scale, height * scale, null);
+        
+        bs.show();
+    }
 
 }

src/main/java/com/gustavolr/engine/window/GameWindowConstants.java

@@ -2,7 +2,7 @@
 
 public final class GameWindowConstants {
 
-    public static final int DEFAULT_WINDOW_HEIGHT = 240;
-    public static final int DEFAULT_WINDOW_WIDTH = 160;
+    public static final int DEFAULT_WINDOW_WIDTH = 260;
+    public static final int DEFAULT_WINDOW_HEIGHT = 140;
     public static final int DEFAULT_WINDOW_SCALE = 4;
 }