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package ch.asynk.tankontank.screens;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.Screen;
import com.badlogic.gdx.InputAdapter;
import com.badlogic.gdx.InputMultiplexer;
import com.badlogic.gdx.input.GestureDetector;
import com.badlogic.gdx.input.GestureDetector.GestureAdapter;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.utils.viewport.FitViewport;
import com.badlogic.gdx.math.Rectangle;
import com.badlogic.gdx.math.MathUtils;
import ch.asynk.tankontank.TankOnTank;
public class GameScreen extends AbstractScreen
{
static private final int MOVE_STEP = 6;
static private final float ZOOM_STEP = 0.04f;
static private final float ZOOM_FACTOR = 5.0f;
private float maxZoom;
private OrthographicCamera cam;
private FitViewport viewport;
private SpriteBatch batch;
private BitmapFont font;
private Sprite mapSprite;
private int touchX;
private int touchY;
public GameScreen(final TankOnTank game)
{
super(game);
batch = new SpriteBatch();
font = new BitmapFont();
final Texture mapTexture = game.manager.get("images/map_a.png", Texture.class);
mapSprite = new Sprite(mapTexture);
mapSprite.setPosition(0, 0);
mapSprite.setSize(mapTexture.getWidth(), mapTexture.getHeight());
cam = new OrthographicCamera();
cam.position.set((mapSprite.getWidth()/2), (mapSprite.getHeight()/2), 0);
cam.zoom = 2f;
viewport = new FitViewport(Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), cam);
Gdx.input.setInputProcessor(getMultiplexer());
}
private InputMultiplexer getMultiplexer()
{
final InputMultiplexer multiplexer = new InputMultiplexer();
multiplexer.addProcessor(new GestureDetector(new GestureAdapter() {
@Override
public boolean zoom(float initialDistance, float distance)
{
cam.zoom += ((initialDistance - distance) / 300.f);
cam.zoom = MathUtils.clamp(cam.zoom, 0.4f, maxZoom);
return true;
}
}));
multiplexer.addProcessor(new InputAdapter() {
@Override
public boolean touchDragged(int x, int y, int pointer)
{
cam.translate((touchX - x) * cam.zoom, (y - touchY) * cam.zoom, 0);
touchX = x;
touchY = y;
return true;
}
@Override
public boolean touchDown(int x, int y, int pointer, int button)
{
if (button == Input.Buttons.LEFT) {
touchX = x;
touchY = y;
}
return true;
}
@Override
public boolean scrolled(int amount)
{
cam.zoom += amount / ZOOM_FACTOR;
cam.zoom = MathUtils.clamp(cam.zoom, 0.4f, maxZoom);
return true;
}
});
return multiplexer;
}
@Override
public void render(float delta)
{
Gdx.gl.glClearColor(0, 0, 0.2f, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
// handleInput();
float width = cam.viewportWidth * cam.zoom / 2f;
float height = cam.viewportHeight * cam.zoom / 2f;
cam.position.x = MathUtils.clamp(cam.position.x, width, (mapSprite.getWidth() - width));
cam.position.y = MathUtils.clamp(cam.position.y, height, (mapSprite.getHeight() - height));
cam.update();
batch.setProjectionMatrix(cam.combined);
batch.begin();
mapSprite.draw(batch);
font.draw(batch, "fps: " + Gdx.graphics.getFramesPerSecond(), 20, 30);
batch.end();
if(Gdx.input.isTouched()) {
// TODO
}
}
@Override
public void resize(int width, int height)
{
Gdx.app.debug("GameScreen", "resize (" + width + "," + height + ")");
viewport.update(width, height);
maxZoom = Math.min((mapSprite.getWidth() / cam.viewportWidth), (mapSprite.getHeight() / cam.viewportHeight));
}
@Override
public void dispose()
{
Gdx.app.debug("GameScreen", "dispose()");
batch.dispose();
font.dispose();
}
@Override
public void show()
{
Gdx.app.debug("GameScreen", "show()");
}
@Override
public void hide()
{
Gdx.app.debug("GameScreen", "hide()");
}
@Override
public void pause()
{
Gdx.app.debug("GameScreen", "pause()");
}
@Override
public void resume()
{
Gdx.app.debug("GameScreen", "resume()");
}
}
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