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.Image; import com.badlogic.gdx.scenes.scene2d.ui.Label; import com.badlogic.gdx.math.GridPoint2; 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.Pawn; import ch.asynk.tankontank.game.HexMap; import ch.asynk.tankontank.game.Unit; import ch.asynk.tankontank.game.UnitFactory; import ch.asynk.tankontank.game.UnitFactory.UnitType; public class GameScreen extends AbstractScreen { private static final float ZOOM_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; final OrthographicCamera cam; private HexMap map; private Image selectedHex; private Label fps; 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 private Pawn draggedPawn = null; private GridPoint2 cell = new GridPoint2(-1, -1); // current map cell public GameScreen(final TankOnTank game) { super(game); fps = new Label("FPS: 0", game.skin); fps.setPosition( 10, Gdx.graphics.getHeight() - 40); map = new HexMap(11, 9, game.manager.get("images/map_a.png", Texture.class)); selectedHex = new Image(game.manager.get("images/hex.png", Texture.class)); selectedHex.setVisible(false); 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); gameStage.addActor(selectedHex); UnitFactory.init(game.manager, map); addUnit(gameStage, UnitType.GE_AT_GUN, 1, 4, 0); addUnit(gameStage, UnitType.GE_INFANTRY, 2, 4, 0); addUnit(gameStage, UnitType.GE_KINGTIGER, 3, 4, 0); addUnit(gameStage, UnitType.GE_PANZER_IV, 4, 4, 0); addUnit(gameStage, UnitType.GE_PANZER_IV_HQ, 5, 4, 0); addUnit(gameStage, UnitType.GE_TIGER, 6, 4, 0); addUnit(gameStage, UnitType.GE_WESPE, 7, 4, 0); addUnit(gameStage, UnitType.US_AT_GUN, 1, 3, 0); addUnit(gameStage, UnitType.US_INFANTRY, 2, 3, 0); addUnit(gameStage, UnitType.US_PERSHING, 3, 3, 0); addUnit(gameStage, UnitType.US_PERSHING_HQ, 4, 3, 0); addUnit(gameStage, UnitType.US_PRIEST, 5, 3, 0); addUnit(gameStage, UnitType.US_SHERMAN, 6, 3, 0); addUnit(gameStage, UnitType.US_SHERMAN_HQ, 7, 3, 0); addUnit(gameStage, UnitType.US_WOLVERINE, 8, 3, 0); hud = new Stage(new ScreenViewport()); hud.addActor(fps); Gdx.input.setInputProcessor(getMultiplexer()); } private void addUnit(Stage stage, UnitType t, int col, int row, int angle) { Unit u = UnitFactory.getUnit(t); u.moveTo(col, row, angle); stage.addActor(u); } 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_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 * screenToViewport.x); float deltaY = ((dragPos.y - y) * cam.zoom * screenToViewport.y); dragPos.set(x, y); if (draggedPawn == null) { cam.translate(-deltaX, -deltaY, 0); clampCameraPos(); } else { draggedPawn.moveBy(deltaX, deltaY); cam.unproject(touchPos.set(x, y, 0)); map.getCellAt(cell, touchPos.x, touchPos.y); map.setImageCenterAt(selectedHex, cell); } 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.getCellAt(cell, touchPos.x, touchPos.y); draggedPawn = map.getTopPawnAt(cell); if (draggedPawn != null) draggedPawn.setZIndex(DRAGGED_Z_INDEX); map.setImageCenterAt(selectedHex, cell); selectedHex.setVisible(true); } return true; } @Override public boolean touchUp(int x, int y, int pointer, int button) { if (button == Input.Buttons.LEFT) { cam.unproject(touchPos.set(x, y, 0)); if (draggedPawn != null) { map.getCellAt(cell, touchPos.x, touchPos.y); draggedPawn.moveTo(cell); } selectedHex.setVisible(false); } 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()); 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(); UnitFactory.dispose(); game.unloadAssets(); } @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()"); } }