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PO
 

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  1. PO
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    <p>I can't tell if this is your only mistake, but this is ONE mistake. If this is what you say you were doing:</p> <pre><code>spriteBatch.begin(); drawBackground(); drawShip(); spriteBatch.setProjectionMatrix(camera.combined); spriteBatch.end(); </code></pre> <p>You wont see anything. When setProjectionMatrix is called inside a begin()/end() block. the current batch is flushed to the gpu. So, you are actually not drawing anything with the camera matrix. You should do this instead:</p> <pre><code> spriteBatch.setProjectionMatrix(camera.combined); spriteBatch.begin(); drawBackground(); drawShip(); spriteBatch.end(); </code></pre> <p>EDIT:</p> <p>If you don't call that line, spriteBatch uses its own default camera (which wont notice your camera.update() modifications, so that's not what you want).</p> <p>You should now pay more attention to the coordinates you are using. I'm not quite sure you really need the ppu conversion thing. To begin with, define everything in imaginary world coordinates, note that you'll see some stretching in your world.</p> <pre><code>public void drawShip(){ spriteBatch.draw(shipTexture,ship.getPosition().x,ship.getPosition().y, 10, 10); }//your ship is 10 units wide and tall! public void drawBackground(){ spriteBatch.draw(background, -10,0, 500, 100); } //your background is 500 units wide, and 100 units tall //camera setup camera = new OrthographicCamera(50, 50); //your camera will print to screen 50 units of your world </code></pre> <p>If you get to see a stretched world, try to understand how it's working (if you can't see anything, there is something wrong somewhere).</p> <p>EDIT 2</p> <p>I took a look at your code. First remove ppu's, as it obscures your code. You were setting your cam position to the ship.postion, while drawing at ship.position * ppu. Also your background was way too big (that's why you see it pixelated). You should see something reasonable with this. (someday you'll have to initialize your camera in another way to deal with stretching, but forget it until you understand how all works).</p> <pre><code>this.cam = new OrthographicCamera(CAMERA_WIDTH,CAMERA_HEIGHT); public void drawShip(){ spriteBatch.draw(shipTexture, ship.getPosition().x ,ship.getPosition().y, 10, 10); } public void drawBackground(){ spriteBatch.draw(background, -CAMERA_WIDTH/2, -CAMERA_HEIGHT/2, 100, 100); //let bg begin where camera starts. (0,0) } public void render(float delta){ ship.Move(delta); moverCamara(ship.getPosition().x, ship.getPosition().y); spriteBatch.setProjectionMatrix(cam.combined); spriteBatch.begin(); drawBackground(); drawShip(); spriteBatch.end(); } </code></pre>
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    1. POLibGdx How to Scroll using OrthographicCamera?
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    1. USaacotroneo
    1. USaacotroneo
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      1. VTUpMod
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    1. COOk, I tried what you say, It does some kind of huge zoom, so I see very big background (I guess) pixels
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    2. COFine!, now your are seeing something. The problem you mention should be related to the camera viewport (in case you are using an ortho cam). Try to set a smaller one when you create the camera.
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    3. COCamera Viewport its ok if I don't do that. It's like it changes or something when I add that line, so It doesn't matter if I set It big or small. And yes, It's ortho cam.
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