I want to do the drawing in another thread to speed up the game(it is
way to slow right now). I was told to do this but don't quite
understand why that would speed things up.
Is it GameView that should implement Runnable?
Should I make the thread sleep when not drawing?
where should I start the thread?
package com.android.WWS;
import android.app.Activity;
import android.content.Context;
import android.graphics.*;
import android.os.Bundle;
import android.view.SurfaceView;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnKeyListener;
import java.lang.Runnable;
import java.lang.Thread;
public class WWS extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
GameView gv = new GameView(this);
setContentView(gv);
gv.setOnKeyListener(new OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event)
{
GameView gv = (GameView) v;
if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
gv.decrY(3);
v.invalidate();
} else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
gv.decrX(3);
v.invalidate();
} else if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
gv.incrY(3);
v.invalidate();
} else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
gv.incrX(3);
v.invalidate();
}
return true;
}
});
}
private static class GameView extends SurfaceView implements
Runnable {
private Paint mPaint = new Paint();
private int x;
private int y;
public GameView(Context context) {
super(context);
x = 135;
y = 303;
setWillNotDraw(false);
setFocusable(true);
requestFocus();
Thread t = new Thread(this);
t.start();
}
public void run() {}
@Override
public void onDraw(Canvas canvas) {
Paint paint = mPaint;
canvas.translate(10, 10);
canvas.drawColor(Color.rgb(184,134,11));
paint.setColor(Color.rgb(107,142,35));
paint.setStrokeWidth(1);
canvas.drawRect(x, y, x+30, y+7, paint);
canvas.drawRect(x+10, y+7, x+20, y+27, paint);
canvas.drawRect(x+5, y+27, x+25, y+32, paint);
}
public void decrY(int length) {
y -= length;
}
public void incrY(int length) {
y += length;
}
public void decrX(int length) {
x -= length;
}
public void incrX(int length) {
x += length;
}
}
}
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