com.turbogerm.helljump.screens.general.ScreenBackground.java Source code

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Here is the source code for com.turbogerm.helljump.screens.general.ScreenBackground.java

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/*
 * The MIT License (MIT)
 * 
 * Copyright (c) 2013 Goran Mrzljak
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.turbogerm.helljump.screens.general;

import com.badlogic.gdx.assets.AssetManager;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.utils.Array;
import com.turbogerm.germlibrary.util.ColorPositionPair;
import com.turbogerm.helljump.CameraData;
import com.turbogerm.helljump.game.background.GameBackground;

public final class ScreenBackground {

    private static final float SPECTRUM_TRAVERSAL_HALF_PERIOD = 30.0f;
    private static final float SPECTRUM_TRAVERSAL_PERIOD = SPECTRUM_TRAVERSAL_HALF_PERIOD * 2.0f;

    private final GameBackground mGameBackground;

    private float mInternalTime;

    public ScreenBackground(CameraData cameraData, AssetManager assetManager) {
        mGameBackground = new GameBackground(getBackgroundColorSpectrum(), false, cameraData, assetManager);
    }

    public void reset() {
        mInternalTime = 0;
    }

    public void update(float delta) {
        mInternalTime += delta;
        mInternalTime %= SPECTRUM_TRAVERSAL_PERIOD;
        float spectrumFraction;
        if (mInternalTime <= SPECTRUM_TRAVERSAL_HALF_PERIOD) {
            spectrumFraction = mInternalTime / SPECTRUM_TRAVERSAL_HALF_PERIOD;
        } else {
            spectrumFraction = (SPECTRUM_TRAVERSAL_PERIOD - mInternalTime) / SPECTRUM_TRAVERSAL_HALF_PERIOD;
        }
        mGameBackground.setSpectrumFraction(spectrumFraction);
    }

    public void render(SpriteBatch batch) {
        mGameBackground.render(batch, 0.0f);
    }

    private static Array<ColorPositionPair> getBackgroundColorSpectrum() {
        Array<ColorPositionPair> colorPositionPairs = new Array<ColorPositionPair>(true, 4);

        colorPositionPairs.add(new ColorPositionPair(new Color(0.3f, 0.0f, 0.0f, 1.0f), 0.0f));
        colorPositionPairs.add(new ColorPositionPair(new Color(0.6f, 0.0f, 0.0f, 1.0f), 5.0f));
        colorPositionPairs.add(new ColorPositionPair(new Color(0.91f, 0.6f, 0.09f, 1.0f), 10.0f));
        colorPositionPairs.add(new ColorPositionPair(new Color(0.1f, 1.0f, 0.00f, 1.0f), 15.0f));

        return colorPositionPairs;
    }
}