/*
 * Copyright (C) 2007 Jordi Mas i Hernàndez <jmas@softcatala.org>
 *
 * 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; either version 2 of the
 * License, or (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

using Mono.Unix;
using System;

using gbrainy.Core.Main;

namespace gbrainy.Games.Logic
{
	public class PuzzleLines : Game
	{
		private const int max_types = 3;
		private int type;
		private int fig1, fig2;

		public override string Name {
			get {return Catalog.GetString ("Lines");}
		}

		public override string Question {
			get {return Catalog.GetString ("How many line segments in total are in the figures below? A line segment is a line between two points with no crossing lines.");}
		}

		public override string Rationale {
			get {
				return String.Format (Catalog.GetString ("There are {0} lines in the figure to the left and {1} in the figure to the right."), fig1, fig2);
			}
		}

		public override string Tip {
			get { return Catalog.GetString ("It is an easy exercise if you systematically count the lines.");}
		}

		protected override void Initialize ()
		{
			if (CurrentDifficulty==GameDifficulty.Easy)
				type = 0;
			else
				type = random.Next (max_types);		

			switch (type) {
			case 0:
				fig1 = 15;
				fig2 = 21;
				break;
			case 1:
				fig1 = 33;
				fig2 = 39;
				break;
			case 2:
				fig1 = 15;
				fig2 = 39;
				break;
			}

			right_answer = (fig1 + fig2).ToString ();
		}

		static private void DrawLine (CairoContextEx gr, double x, double y, double w, double h)
		{
			gr.MoveTo (x, y);
			gr.LineTo (x + w, y + h);
			gr.Stroke ();
		}

		public override void Draw (CairoContextEx gr, int area_width, int area_height, bool rtl)
		{
			base.Draw (gr, area_width, area_height, rtl);
	
			DrawLine (gr, 0.1, 0.2, 0.4, 0.38);
			DrawLine (gr, 0.1, 0.3, 0.4, 0.3);
			DrawLine (gr, 0.1, 0.4, 0.4, 0.25);

			if (type == 1)  {
				DrawLine (gr, 0.6, 0.3, -0.2, 0.35);
				DrawLine (gr, 0.5, 0.25, -0.2, 0.35);		
			}

			DrawLine (gr, 0.1, 0.25, 0.6, 0.1);
			DrawLine (gr, 0.25, 0.2, 0, 0.4);

			if (type == 2 || type == 1)  {
				DrawLine (gr, 0.85, 0.25, -0.2, 0.4);
				DrawLine (gr, 0.88, 0.25, -0.2, 0.4);
			}

			DrawLine (gr, 0.91, 0.25, -0.2, 0.4);
			DrawLine (gr, 0.8, 0.2, 0, 0.4);
			DrawLine (gr, 0.82, 0.2, 0, 0.4);
			DrawLine (gr, 0.6, 0.50, 0.25, 0);
			DrawLine (gr, 0.6, 0.53, 0.25, 0);
		}
	}
}
