Android Open Source - clash_of_balls Popup Base

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From Project

Back to project page clash_of_balls.

License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright (C) 2012-2013 Hans Hardmeier <hanshardmeier@gmail.com>
 * Copyright (C) 2012-2013 Andrin Jenal//from w w w  . j  a  v  a2  s  .  c  o  m
 * Copyright (C) 2012-2013 Beat Kng <beat-kueng@gmx.net>
 * 
 * This program 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; version 3 of the License.
 * 
 * This program 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.
 *
 */

package com.sapos_aplastados.game.clash_of_balls.menu;

import com.sapos_aplastados.game.clash_of_balls.R;
import com.sapos_aplastados.game.clash_of_balls.Texture;
import com.sapos_aplastados.game.clash_of_balls.TextureManager;
import com.sapos_aplastados.game.clash_of_balls.VertexBufferFloat;
import com.sapos_aplastados.game.clash_of_balls.game.RenderHelper;
import com.sapos_aplastados.game.clash_of_balls.game.Vector;

import android.content.Context;
import android.opengl.GLES20;

/**
 * base class for a popup menu as an overlay over a menu/game
 * 
 * when a popup is shown over a menu, the movement of the menu is not stopped
 * but all input events only go to the popup
 * 
 * a fixed aspect ratio is used
 *
 */
public class PopupBase extends GameMenuBase {
  
  public static final float width_scaling = 0.8f; //output width = scaling * screen width
  public static final float aspect_ratio = 1.66666f; //output height = output width / aspect
  
  protected float m_color[] = new float[4];
  protected VertexBufferFloat m_position_data;
  
  private Texture m_background_texture;
  protected Vector m_position;
  protected Vector m_size;

  public PopupBase(Context context, TextureManager tex_manager
      , float screen_width, float screen_height) {
    super(null, context);
    
    m_position_data = new VertexBufferFloat
        (VertexBufferFloat.sprite_position_data, 3);
    RenderHelper.initColorArray(0xffffffff, m_color);
    
    m_background_texture = tex_manager.get(R.raw.texture_popup_bg);
    
    float width = screen_width * width_scaling;
    float height = width/aspect_ratio;
    if(height > screen_height) {
      height = screen_height;
      width = height * aspect_ratio;
    }
    m_size = new Vector(width , height);
    m_position = new Vector((screen_width-m_size.x)/2.f, (screen_height-m_size.y)/2.f);
  }
  
  public void draw(RenderHelper renderer) {
    renderer.pushModelMat();
    renderer.modelMatTranslate(m_position.x, m_position.y, 0.f);
    renderer.modelMatScale(m_size.x, m_size.y, 0.f);
    
    drawTexture(renderer, m_background_texture);
        
        renderer.popModelMat();
        
        super.draw(renderer);
  }
  
  protected void drawTexture(RenderHelper renderer, Texture texture) {
    renderer.shaderManager().activateTexture(0);
    texture.useTexture(renderer);
    // position
    int position_handle = renderer.shaderManager().a_Position_handle;
    if(position_handle != -1)
      m_position_data.apply(position_handle);
        // color
    int color_handle = renderer.shaderManager().u_Color_handle;
    if(color_handle != -1)
      GLES20.glUniform4fv(color_handle, 1, m_color, 0);
    renderer.apply();
        // Draw
        GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
  }

  protected void onTouchDown(MenuItem item) {
  }

  protected void onTouchUp(MenuItem item) {
  }

  public void onBackButtonPressed() {
    //we do nothing here. this event is handled inside the menus
    //and not in the popup's
  }

}

Java Source Code List

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