net.bplaced.therefactory.voraciousviper.input.TitleScreenInputProcessor.java Source code

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Here is the source code for net.bplaced.therefactory.voraciousviper.input.TitleScreenInputProcessor.java

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/*
 * Copyright (C) 2016  Christian DeTamble
 *
 * This file is part of Voracious Viper.
 *
 * Voracious Viper is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Voracious Viper is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Voracious Viper.  If not, see <http://www.gnu.org/licenses/>.
 */

package net.bplaced.therefactory.voraciousviper.input;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.InputAdapter;
import com.badlogic.gdx.math.Vector2;

import net.bplaced.therefactory.voraciousviper.constants.Config;
import net.bplaced.therefactory.voraciousviper.misc.Utils;
import net.bplaced.therefactory.voraciousviper.screens.TitleScreen;
import net.bplaced.therefactory.voraciousviper.screens.TitleScreen.TitleScreenState;

public class TitleScreenInputProcessor extends InputAdapter {

    private final TitleScreen titleScreen;
    private float deltaY;
    private float lastDeltaY;
    private float touchStartY;
    private boolean touchDragging;
    private final float topY;
    private final float bottomY;
    //   private boolean scrollbarHandleDragging;

    public TitleScreenInputProcessor(TitleScreen titleScreen, float topY, float bottomY) {
        this.titleScreen = titleScreen;
        this.topY = topY;
        this.bottomY = bottomY;
    }

    @Override
    public boolean keyDown(int keycode) {
        boolean returnValue = super.keyDown(keycode);
        if (keycode == Keys.BACK) {
            if (!titleScreen.getState().equals(TitleScreenState.ShowMainMenu)) {
                titleScreen.setState(TitleScreenState.ShowMainMenu);
            } else {
                Gdx.app.exit();
            }
            return true;
        }
        return returnValue;
    }

    @Override
    public boolean touchDown(int screenX, int screenY, int pointer, int button) {
        Vector2 touchCoordinates = titleScreen.getViewport().unproject(new Vector2(screenX, screenY));
        touchStartY = touchCoordinates.y;
        //      scrollbarHandleDragging = Util.within(touchCoordinates, titleScreen.getScrollbarHandle());
        return false;
    }

    @Override
    public boolean touchUp(int screenX, int screenY, int pointer, int button) {
        super.touchUp(screenX, screenY, pointer, button);
        //      lastDeltaY = (scrollbarHandleDragging ? deltaY : -deltaY);
        lastDeltaY = -deltaY;
        touchDragging = false;
        return false;
    }

    @Override
    public boolean touchDragged(int screenX, int screenY, int pointer) {
        super.touchDragged(screenX, screenY, pointer);
        touchDragging = true;
        Vector2 touchCoordinates = titleScreen.getViewport().unproject(new Vector2(screenX, screenY));
        if (!Utils.within(touchCoordinates, titleScreen.getCloseButton())) {
            //         if (scrollbarHandleDragging) {
            //               float scrollbarPosition = Math.max(33, touchCoordinates.y + titleScreen.getScrollbarHandle().getHeight());
            //               titleScreen.setScrollbarPositionY(scrollbarPosition);
            //               if (scrollbarPosition <= 33) {
            //                  return true;
            //               }
            //            }

            deltaY = (touchStartY - touchCoordinates.y) + lastDeltaY;
            deltaY = Math.max(deltaY, titleScreen.getScoreEntries() == null ? 0
                    : -Config.LINE_HEIGHT_HIGHSCORES * (titleScreen.getNumScoreEntries())); // stop scrolling if only last line is visible

            //            if (!scrollbarHandleDragging) {
            deltaY = -deltaY; // invert vertical scrolling direction
            titleScreen.setScrollbarPositionY(
                    (bottomY - topY) / (Config.LINE_HEIGHT_HIGHSCORES * (titleScreen.getNumScoreEntries())) * deltaY
                            + topY);
            //            }

            return true;
        }
        return false;
    }

    public void update() {
        if (!touchDragging && deltaY < 0) { // scroll score table back to top if dragged down too far
            deltaY = Math.min(0, deltaY + Math.abs(deltaY) / 5);
            lastDeltaY = deltaY;
        }
    }

    public float getDeltaY() {
        return deltaY;
    }

    public void resetDeltaY() {
        deltaY = 0;
        lastDeltaY = 0;
    }

}