Android Open Source - BobEngine Graphic

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License

The source code is released under:
GNU Lesser General Public License
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Java Source Code

/**
 * BobEngine - 2D game engine for Android
 * /*  w  ww.  ja  v a 2  s  . c  o  m*/
 * Copyright (C) 2014, 2015 Benjamin Blaszczak
 * 
 * BobEngine is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser Public License
 * version 2.1 as published by the free software foundation.
 * 
 * BobEngine is provided without warranty; without even the implied
 * warranty of merchantability or fitness for a particular 
 * purpose. See the GNU Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General
 * Public License along with BobEngine; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth
 * Floor, Boston, MA 02110-1301 USA
 * 
 */

package bobby.engine.bobengine;

/**
 * This class contains information about a graphic sheet.
 * 
 * @author Ben
 * @version alpha
 */
public class Graphic {
  // Data
  public float width;         // Total width of the sheet
  public float height;        // Total height of the sheet
  public int drawable;        // Android drawable
  public int id;              // OpenGL ID number of the sheet
  public int magFilter;       // OpenGL upscale filter
  public int minFilter;       // OpenGL downscale filter
  public boolean useMipMaps;  // OpenGL use mipmaps
  private boolean isLoaded;   // Flag that indicates if this graphic is loaded
  public Command c;           // Tells the graphic helper what to do next
  
  public enum Command {
    DO_NOTHING,
    LOAD,
    UNLOAD
  }
  
  /**
   * Set up a default texture.
   */
  public Graphic () {
    width = 1;
    height = 1;
    id = 0;
    isLoaded = false;
    c = Command.DO_NOTHING;
  }
  
  /**
   * Sets up a texture with specific values.
   * 
   * @param width  - The total width of the sheet in pixels.
   * @param height - The total height of the sheet in pixels.
   * @param minFilter - OpenGL downscale filter. (eg. GL11.GL_NEAREST)
   * @param magFilter - OpenGL upscale filter. (eg. GL11.GL_NEAREST)
   * @param useMipMaps - Should this texture use mipmaps. true for better performance.
   * @param id     - Must be a unique numerical ID for this sheet.
   */
  public Graphic (int drawable, int height, int width, int minFilter, int magFilter, boolean useMipMaps, int id) {
    this.drawable = drawable;
    this.width = width;
    this.height = height;
    this.id = id;
    this.magFilter = magFilter;
    this.minFilter = minFilter;
    this.useMipMaps = useMipMaps;
    isLoaded = false;
    c = Command.DO_NOTHING;
  }
  
  /**
   * @return True if this graphic is loaded and ready to use. False otherwise.
   */
  public boolean isLoaded() {
    return isLoaded;
  }
  
  /**
   * Commands can be DO_NOTHING, LOAD, or UNLOAD.
   * 
   * @return The command that this graphic is waiting to be executed.
   */
  public Command getCommand() {
    return c;
  }
  
  /**
   * Tell the engine to load this graphic. The graphic is not loaded immediately.
   * When the graphic has been loaded, isLoaded() will return true.
   */
  public void load() {
    c = Command.LOAD;
  }
  
  /**
   * Tell the engine to unload this graphic. The graphic is not unloaded immediately.
   * When the graphic is unloaded, isLoaded() will return false.
   */
  public void unload() {
    c = Command.UNLOAD;
  }
  
  /**
   * Signify that the current command has been finished.
   */
  public void finished() {
    if (c == Command.LOAD) isLoaded = true;
    else if (c == Command.UNLOAD) isLoaded = false;
    
    c = Command.DO_NOTHING;
  }
}
Java Source Code List
