Android Open Source - CoreGame Game Screen

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License

The source code is released under:

Copyright (c) 2011 Andrey Moiseev, http://o2genum.ru Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),...

Java Source Code

package ru.o2genum.coregame.game;
//from   w  ww.  ja  v a 2  s  .  c  o  m
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.*;

import android.graphics.*;
import android.graphics.drawable.*;
import android.util.Log;
import android.content.res.*;
import android.content.*;
import android.app.*;

import ru.o2genum.coregame.framework.*;
import ru.o2genum.coregame.R;

public class GameScreen extends Screen {
    long startTime = System.nanoTime();
  World world;

  Paint paint = new Paint();
  RectF rect = new RectF();

  GradientDrawable gradient;

  Context r;
        
    public GameScreen(Game game) {
        super(game);
    r = (Context) game;
    world = new World(game);  
    world.renew();
    rect.top = world.core.coords.y - world.core.shieldRadius;
    rect.left = world.core.coords.x - world.core.shieldRadius;
    rect.bottom = world.core.coords.y + world.core.shieldRadius;
    rect.right = world.core.coords.x + world.core.shieldRadius;

    paint.setAntiAlias(true);
    paint.setStrokeWidth(0.0F);
    
    // This gradient looks quite smooth, but not perfect
    gradient = new GradientDrawable(GradientDrawable.Orientation.TL_BR,
        new int[]{0xff001319, 0xff013e3f});
    gradient.setGradientType(GradientDrawable.RADIAL_GRADIENT);
    gradient.setGradientRadius((int) world.offScreenRadius);
    gradient.setDither(false);
    gradient.setGradientCenter(0.5F, 0.5F);
    gradient.setBounds(new Rect(0, 0, game.getGraphics().getWidth(),
             game.getGraphics().getHeight()));
    
    paint.setTextSize(((float)game.getGraphics().getHeight()) / 16F);
    paint.setTextAlign(Paint.Align.CENTER);
    }
    
    @Override
    public void update(float deltaTime) {
    world.update(deltaTime);
    }

    @Override
    public void present(float deltaTime) {
    Canvas c = game.getGraphics().getCanvas();    
  gradient.draw(c);
  paint.setStyle(Paint.Style.FILL_AND_STROKE);
  if(world.core.shieldEnergy > 0.0F)
  {
    paint.setColor(0xff003cca);
    paint.setAlpha((int) (80.0F +
             (255.0F - 80.0F) * world.core.shieldEnergy));
    c.drawCircle(world.core.coords.x, world.core.coords.y,
      world.core.shieldRadius, paint);
    paint.setAlpha(255);
  }
  paint.setColor(0xff19dbe2);
  c.drawCircle(world.core.coords.x, world.core.coords.y,
         world.core.maxRadius * world.core.health,
      paint);
  paint.setStyle(Paint.Style.STROKE);
  paint.setColor(0xffffffff);
  paint.setStrokeWidth(Core.SHIELD_WIDTH);
  c.drawArc(rect, (360.0F - world.core.angle),
      (360.0F - world.core.GAP_ANGLE), false, paint);
  paint.setStrokeWidth(0.0F);
  paint.setStyle(Paint.Style.FILL_AND_STROKE);
  Iterator<Dot> iterator = world.dots.iterator();
  while(iterator.hasNext())
  {
    int color = 0;
    Dot dot = iterator.next();
    if(dot.type == Dot.Type.Enemy)
      color = 0xffe2192e;
    else if(dot.type == Dot.Type.Health)
      color = 0xff19dbe2;
    else if(dot.type == Dot.Type.Shield)
      color = 0xff003cca;
    paint.setColor(color);
    c.drawCircle(dot.coords.x, dot.coords.y,
        dot.maxRadius * dot.energy, paint);
    }

  if(world.state == World.GameState.Running)
    drawMessage(world.getTime(), c);
  else if(world.state == World.GameState.Ready)
    drawMessage(r.getString(R.string.ready), c);
  else if(world.state == World.GameState.Paused)
    drawMessage(r.getString(R.string.paused), c);
  else if(world.state == World.GameState.GameOver)
    drawMessage(r.getString(R.string.game_over)+
        "\n"+
        r.getString(R.string.your_time) +  " " + world.getTime() +
        "\n\n" + r.getString(R.string.game_url), c);
  }

  private void drawMessage(String message, Canvas c)
  {
    float y = paint.getTextSize();
    for(String line: message.split("\n"))
    {
    // Draw black stroke
    paint.setStrokeWidth(2F);
    paint.setColor(0xff000000);
      paint.setStyle(Paint.Style.STROKE);

    c.drawText(line, c.getWidth()/2F, y, paint);
    // Draw white text
    paint.setStrokeWidth(0.0F);
    paint.setColor(0xffffffff);
      paint.setStyle(Paint.Style.FILL);

    c.drawText(line, c.getWidth()/2F, y, paint);

    y += paint.getTextSize();
    }
  }

    @Override
    public void pause() {
    world.state = World.GameState.Paused;
    }

    @Override
    public void resume() {
    }

    @Override
    public void dispose() {
    }            
}

Java Source Code List

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