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package com.ractoc.fs.invasion.appstates;

import com.jme3.app.Application;
import com.jme3.app.state.AbstractAppState;
import com.jme3.app.state.AppStateManager;
import com.jme3.material.Material;
import com.jme3.math.ColorRGBA;
import com.jme3.scene.Geometry;
import com.jme3.scene.shape.Quad;
import com.jme3.texture.Image;
import com.jme3.texture.Texture2D;
import com.ractoc.fs.invasion.GameClient;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;

/**
 *
 * @author ractoc
 */
public class StarField extends AbstractAppState {

    private Geometry starField;
    private int width, height, density, layers;
    private GameClient gameClient;

    public StarField(int width, int height, int density, int layers) {
        this.width = width;
        this.height = height;
        this.density = density;
        this.layers = layers;
    }

    @Override
    public final void initialize(final AppStateManager stateManager,
            final Application app) {
        super.initialize(stateManager, app);
        this.gameClient = (GameClient) app;
        Quad starQ = new Quad(width, height);
        starField = new Geometry("starField", starQ);

        Material mat = new Material(gameClient.getAssetManager(),
                "Common/MatDefs/Misc/Unshaded.j3md");
        mat.setColor("Color", ColorRGBA.Blue);
        Texture2D t = new Texture2D();
        Image i = new Image(Image.Format.RGBA8, width, height, null);
        t.setImage(i);
        mat.setTexture("stars", t);
        starField.setMaterial(mat);
        gameClient.getRootNode().attachChild(starField);
    }

    private ByteBuffer addStars() throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        for (int i = 0; i < layers; i++) {
            for (int j = 0; j < density; j++) {
                baos.write(createStar());
            }
        }
        return ByteBuffer.wrap(baos.toByteArray());
    }

    private byte[] createStar() {
        return null;
    }
}