Change canvas to double buffered drawing
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2e8a85bf90
commit
41eedcea47
@ -1,7 +1,6 @@
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package com.annimon.turrets;
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import java.awt.Canvas;
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import java.awt.Color;
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import java.awt.Graphics;
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import java.awt.image.BufferedImage;
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@ -11,24 +10,56 @@ import java.awt.image.BufferedImage;
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*/
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public class GameCanvas extends Canvas {
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private final Graphics G;
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private final BufferedImage buffer;
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private final Terrain terrain;
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private BufferedImage background;
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public GameCanvas() {
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setSize(Constants.WIDTH, Constants.HEIGHT);
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setPreferredSize(Constants.SCREEN_DIMENSION);
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buffer = new BufferedImage(Constants.WIDTH, Constants.HEIGHT, BufferedImage.TYPE_INT_RGB);
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G = buffer.createGraphics();
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initBackground();
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terrain = new Terrain(Constants.WIDTH);
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terrain.generate(System.currentTimeMillis());
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new DrawingThread().start();
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}
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@Override
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public void paint(Graphics g) {
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g.drawImage(background, 0, 0, null);
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G.drawImage(background, 0, 0, null);
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terrain.draw(G);
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g.drawImage(buffer, 0, 0, null);
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}
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@Override
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public void update(Graphics g) {
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paint(g);
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}
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private void initBackground() {
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background = new BufferedImage(Constants.WIDTH, Constants.HEIGHT, BufferedImage.TYPE_INT_RGB);
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Graphics g = background.createGraphics();
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new Background().draw(g);
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g.dispose();
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}
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private class DrawingThread extends Thread {
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private boolean keepRunning = true;
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@Override
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public void run() {
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while (keepRunning) {
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try {
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Thread.sleep(100);
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} catch (InterruptedException ex) {}
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repaint();
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}
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}
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}
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}
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