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package ch.asynk.tankontank.engine;
import java.util.LinkedList;
import java.util.Vector;
import java.util.Iterator;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Camera;
import com.badlogic.gdx.graphics.g2d.Batch;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.utils.viewport.Viewport;
import ch.asynk.tankontank.engine.gfx.Node;
import ch.asynk.tankontank.engine.gfx.Animation;
public class Layer
{
public boolean visible;
private final Viewport viewport;
private final Batch batch;
private final Vector<Animation> animations = new Vector<Animation>(5);
private final Vector<Animation> nextAnimations = new Vector<Animation>(2);
private final LinkedList<Node> nodes = new LinkedList<Node>();
public Layer(Viewport viewport)
{
this.visible = true;
this.viewport = viewport;
this.batch = new SpriteBatch();
viewport.update(Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), true);
}
public void resize(int width, int height)
{
viewport.update(width, height);
}
public void addNode(Node node)
{
node.setLayer(this);
nodes.add(node);
}
public boolean removeNode(Node node)
{
node.setLayer(null);
return nodes.remove(node);
}
public void goOnTop(Node node)
{
nodes.remove(node);
node.setLayer(this);
nodes.add(node);
}
public void addAnimation(Animation animation)
{
nextAnimations.add(animation);
}
public void act()
{
act(Math.min(Gdx.graphics.getDeltaTime(), (1 / 30f)));
}
public void act(float delta)
{
Iterator<Animation> iter;
iter = animations.iterator();
while (iter.hasNext()) {
Animation a = iter.next();
Node n = a.getNode();
if (n != null)
goOnTop(n);
if (a.act(delta)) iter.remove();
}
for (int i = 0, n = nodes.size(); i < n; i++)
nodes.get(i).act(delta);
for (int i = 0, n = nextAnimations.size(); i < n; i++)
animations.add(nextAnimations.get(i));
nextAnimations.clear();
}
public void draw()
{
Camera camera = viewport.getCamera();
camera.update();
if (!visible) return;
Batch batch = this.batch;
if (batch != null) {
batch.setProjectionMatrix(camera.combined);
batch.begin();
for (int i = 0, n = nodes.size(); i < n; i++)
nodes.get(i).draw(batch, 1);
batch.end();
}
}
public void clear()
{
for (int i = 0, n = nodes.size(); i < n; i++)
nodes.get(i).clear();
nodes.clear();
for (int i = 0, n = animations.size(); i < n; i++)
animations.get(i).free();
animations.clear();
for (int i = 0, n = nextAnimations.size(); i < n; i++)
nextAnimations.get(i).free();
nextAnimations.clear();
batch.dispose();
}
}
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