package ch.asynk.tankontank.screens; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.Screen; 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.graphics.g2d.Batch; import com.badlogic.gdx.graphics.g2d.SpriteBatch; import com.badlogic.gdx.graphics.glutils.ShapeRenderer; 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.game.GameCtrl; public class GameScreen implements Screen { private static final boolean DEBUG = false; private static final float ZOOM_IN_MAX = 0.2f; private static final float ZOOM_GESTURE_FACTOR = .01f; private static final float ZOOM_SCROLL_FACTOR = .1f; private static final int DRAGGED_Z_INDEX = 10; private float maxZoomOut; private float virtualWidth; private float virtualHeight; private final OrthographicCamera cam; private final FitViewport mapViewport; private final ScreenViewport hudViewport; private final Batch mapBatch; private final Batch hudBatch; private ShapeRenderer debugShapes = null; private final TankOnTank game; private GameCtrl ctrl; private Vector2 dragPos = new Vector2(); private Vector3 touchPos = new Vector3(); private Vector2 screenToWorld = new Vector2(); public GameScreen(final TankOnTank game) { this.game = game; ctrl = new GameCtrl(game); virtualWidth = ctrl.map.getWidth(); virtualHeight = ctrl.map.getHeight(); cam = new OrthographicCamera(virtualWidth, virtualHeight); cam.setToOrtho(false); mapViewport = new FitViewport(virtualWidth, virtualHeight, cam); mapViewport.update(Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), true); hudViewport = new ScreenViewport(); hudViewport.update(Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), true); mapBatch = new SpriteBatch(); hudBatch = new SpriteBatch(); if (DEBUG) debugShapes = new ShapeRenderer(); 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) { if (initialDistance > distance) cam.zoom += ZOOM_GESTURE_FACTOR; else cam.zoom -= ZOOM_GESTURE_FACTOR; cam.zoom = MathUtils.clamp(cam.zoom, ZOOM_IN_MAX, maxZoomOut); clampCameraPos(); return true; } })); multiplexer.addProcessor(new InputAdapter() { @Override public boolean touchDragged(int x, int y, int pointer) { float deltaX = ((x - dragPos.x) * cam.zoom * screenToWorld.x); float deltaY = ((dragPos.y - y) * cam.zoom * screenToWorld.y); dragPos.set(x, y); cam.translate(-deltaX, -deltaY, 0); clampCameraPos(); return true; } @Override public boolean touchDown(int x, int y, int pointer, int button) { if (button == Input.Buttons.LEFT) { dragPos.set(x, y); unprojectToHud(x, y, touchPos); if (!ctrl.hud.touchDown(touchPos.x, touchPos.y)) { unprojectToMap(x, y, touchPos); ctrl.touchDown(touchPos.x, touchPos.y); } } return true; } @Override public boolean touchUp(int x, int y, int pointer, int button) { if (button == Input.Buttons.LEFT) { unprojectToHud(x, y, touchPos); if (!ctrl.hud.touchUp(touchPos.x, touchPos.y)) { unprojectToMap(x, y, touchPos); ctrl.touchUp(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_IN_MAX, maxZoomOut); clampCameraPos(); return true; } }); return multiplexer; } private void unprojectToMap(int x, int y, Vector3 v) { cam.unproject(v.set(x, y, 0), mapViewport.getScreenX(), mapViewport.getScreenY(), mapViewport.getScreenWidth(), mapViewport.getScreenHeight()); } private void unprojectToHud(int x, int y, Vector3 v) { x -= mapViewport.getLeftGutterWidth(); y += mapViewport.getBottomGutterHeight(); hudViewport.getCamera().unproject(v.set(x, y, 0), hudViewport.getScreenX(), hudViewport.getScreenY(), mapViewport.getScreenWidth(), mapViewport.getScreenHeight()); } 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, (virtualWidth - cx)); cam.position.y = MathUtils.clamp(cam.position.y, cy, (virtualHeight - cy)); } @Override public void render(float delta) { Gdx.gl.glClearColor(0, 0, 0, 1); Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); cam.update(); ctrl.hud.animate(delta); ctrl.map.animate(delta); mapBatch.setProjectionMatrix(cam.combined); mapBatch.begin(); ctrl.map.draw(mapBatch); mapBatch.end(); if (DEBUG) { Gdx.gl.glEnable(GL20.GL_BLEND); debugShapes.setAutoShapeType(true); debugShapes.setProjectionMatrix(cam.combined); debugShapes.begin(); ctrl.map.drawDebug(debugShapes); debugShapes.end(); } Camera hudCam = hudViewport.getCamera(); hudCam.update(); hudBatch.setProjectionMatrix(hudCam.combined); hudBatch.begin(); ctrl.hud.draw(hudBatch); hudBatch.end(); } @Override public void resize(int width, int height) { // Gdx.app.debug("GameScreen", "resize (" + width + "," + height + ")"); mapViewport.update(width, height); // hudViewport.update(width, height); maxZoomOut = Math.min((virtualWidth / cam.viewportWidth), (virtualHeight / cam.viewportHeight)); cam.zoom = MathUtils.clamp(cam.zoom, ZOOM_IN_MAX, maxZoomOut); screenToWorld.set((cam.viewportWidth / width), (cam.viewportHeight / height)); } @Override public void dispose() { // Gdx.app.debug("GameScreen", "dispose()"); game.unloadAssets(); mapBatch.dispose(); hudBatch.dispose(); if (DEBUG) debugShapes.dispose(); ctrl.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()"); } }