package ch.asynk.tankontank.screens; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.Input; 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.Camera; import com.badlogic.gdx.graphics.OrthographicCamera; import com.badlogic.gdx.graphics.Texture; import com.badlogic.gdx.scenes.scene2d.Stage; import com.badlogic.gdx.scenes.scene2d.ui.Label; import com.badlogic.gdx.math.Vector2; import com.badlogic.gdx.math.Vector3; import com.badlogic.gdx.math.MathUtils; import com.badlogic.gdx.utils.viewport.FitViewport; import com.badlogic.gdx.utils.viewport.ScreenViewport; import ch.asynk.tankontank.TankOnTank; import ch.asynk.tankontank.actors.HexMap; public class GameScreen extends AbstractScreen { static private final float ZOOM_MAX = 0.1f; static private final float ZOOM_GESTURE_FACTOR = 300.f; static private final float ZOOM_SCROLL_FACTOR = 10.0f; private float maxZoomOut; final OrthographicCamera cam; private HexMap map; private Label fps; private Label camInfo; private Label cellInfo; private Stage hud; private Stage gameStage; private Vector2 screenToViewport = new Vector2(); // ratio private Vector3 touchPos = new Vector3(); // world coordinates private Vector2 dragPos = new Vector2(); // screen coordinates public GameScreen(final TankOnTank game) { super(game); map = new HexMap(10, 8, game.manager.get("images/map_a.png", Texture.class)); fps = new Label("FPS: 0", game.skin); camInfo = new Label("", game.skin); cellInfo = new Label("", game.skin); fps.setPosition( 10, Gdx.graphics.getHeight() - 40); camInfo.setPosition( 10, Gdx.graphics.getHeight() - 50); cellInfo.setPosition( 10, Gdx.graphics.getHeight() - 70); cam = new OrthographicCamera(); cam.setToOrtho(false); // cam.position.set((map.getWidth()/2), (map.getHeight()/2), 0); gameStage = new Stage(new FitViewport(map.getWidth(), map.getHeight(), cam)); gameStage.addActor(map); hud = new Stage(new ScreenViewport()); hud.addActor(fps); hud.addActor(camInfo); hud.addActor(cellInfo); 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) / ZOOM_GESTURE_FACTOR); cam.zoom = MathUtils.clamp(cam.zoom, ZOOM_MAX, maxZoomOut); clampCameraPos(); return true; } })); multiplexer.addProcessor(new InputAdapter() { @Override public boolean touchDragged(int x, int y, int pointer) { cam.translate(((dragPos.x - x) * cam.zoom * screenToViewport.x), ((y - dragPos.y) * cam.zoom * screenToViewport.y), 0); dragPos.set(x, y); clampCameraPos(); return true; } @Override public boolean touchDown(int x, int y, int pointer, int button) { if (button == Input.Buttons.LEFT) { dragPos.set(x, y); cam.unproject(touchPos.set(x, y, 0)); map.selectCell(touchPos.x, touchPos.y); } return true; } @Override public boolean scrolled(int amount) { cam.zoom += amount / ZOOM_SCROLL_FACTOR; cam.zoom = MathUtils.clamp(cam.zoom, ZOOM_MAX, maxZoomOut); clampCameraPos(); return true; } }); return multiplexer; } private void clampCameraPos() { float cx = cam.viewportWidth * cam.zoom / 2f; float cy = cam.viewportHeight * cam.zoom / 2f; cam.position.x = MathUtils.clamp(cam.position.x, cx, (map.getWidth() - cx)); cam.position.y = MathUtils.clamp(cam.position.y, cy, (map.getHeight() - cy)); } @Override public void render(float delta) { Gdx.gl.glClearColor(0, 0, 0.2f, 1); Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); cam.update(); fps.setText("FPS: " + Gdx.graphics.getFramesPerSecond()); camInfo.setText("Camera: " + (int) cam.position.y + " ; " + (int) cam.position.y + " x " + String.format("%.2f", cam.zoom)); cellInfo.setText("Cell: " + map.cell.x + " ; " + map.cell.y); gameStage.act(delta); gameStage.draw(); hud.act(delta); hud.draw(); } @Override public void resize(int width, int height) { Gdx.app.debug("GameScreen", "resize (" + width + "," + height + ")"); hud.getViewport().update(width, height, true); gameStage.getViewport().update(width, height); maxZoomOut = Math.min((map.getWidth() / cam.viewportWidth), (map.getHeight() / cam.viewportHeight)); cam.zoom = MathUtils.clamp(cam.zoom, ZOOM_MAX, maxZoomOut); screenToViewport.set((cam.viewportWidth / width), (cam.viewportHeight / height)); } @Override public void dispose() { Gdx.app.debug("GameScreen", "dispose()"); hud.dispose(); gameStage.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()"); } }