package code.kalter.longflight.space;

import code.kalter.longflight.Loader;
import code.kalter.longflight.LongFlight;
import java.io.IOException;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;

/**
 * Тайловый фон
 *
 * @author KalterFive
 */
class Tile {

    private final Image tile;
    private final int screenW;
    private final int screenH;
    private final int widthOfTile;
    private final int heightOfTile;
    private int positionY;

    public Tile(Image tile, int screenW, int screenH) {
        this.tile = tile;
        this.screenW = screenW;
        this.screenH = screenH;
        this.widthOfTile = tile.getWidth();
        this.heightOfTile = tile.getHeight();
        this.positionY = -128;
    }

    public Tile(String path, int screenW, int screenH) throws IOException {
        this(Loader.getInstance().getImage(path), screenW, screenH);
    }

    public void paint(Graphics graph) {
        for (int x = 0; x < screenW; x += widthOfTile) {
            for (int y = positionY; y < screenH; y += heightOfTile) {
                graph.drawImage(tile, x, y, 0);
            }
        }
    }

    public void upd() {
        if ((positionY++) > 0) {
            positionY = -128;
        }
    }
}