gbrainy r303 - trunk/src

[jmas svn gnome org]

Author: jmas
Date: Mon Apr 14 15:29:34 2008
New Revision: 303
URL: http://svn.gnome.org/viewvc/gbrainy?rev=303&view=rev

Log:
2008-04-14 Jordi Mas <jmas softcatala org>

	* GameManager.cs: Adds new game
	* CalculationFractions.cs: New calculation game
	* Makefile.am: Adds new game



Added:
   trunk/src/CalculationFractions.cs
Modified:
   trunk/src/ChangeLog
   trunk/src/GameManager.cs
   trunk/src/Makefile.am

Added: trunk/src/CalculationFractions.cs
==============================================================================
--- (empty file)
+++ trunk/src/CalculationFractions.cs	Mon Apr 14 15:29:34 2008
@@ -0,0 +1,213 @@
+/*
+ * Copyright (C) 2008 Jordi Mas i HernÃndez <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 System;
+using Cairo;
+using System.Text;
+using Mono.Unix;
+
+public class CalculationFractions : Game
+{
+	public enum Operation
+	{
+		Addition,	
+		Subtraction,
+		LastOperation
+	}
+
+	class FormulaFraction
+	{
+		public int numerator, denominator;
+		public Operation operation;
+
+		public FormulaFraction (int numerator, int denominator, Operation operation)
+		{
+			this.numerator = numerator;
+			this.denominator = denominator;
+			this.operation = operation;
+		}
+		
+		public double Result {
+			get {
+				return (double) numerator / (double) denominator; 
+			}	
+		}
+	}
+
+	private int fractions_num, demominator_max, factor_max;
+	private FormulaFraction[] fractions;
+	private const string format_string = "{0:###.###}";
+
+	public override string Name {
+		get {return Catalog.GetString ("Fractions");}
+	}
+
+	public override Types Type {
+		get { return Game.Types.MathTrainer;}
+	}
+
+	public override string Question {
+		get {return String.Format (Catalog.GetString ("What is the result of the given operation? (you can answer using a fraction or an integer)"));} 
+	}
+
+	private int Factor {
+		get {
+			switch (random.Next (factor_max)) {
+			case 0:
+			default:
+				return 2;
+			case 1:
+				return 3;
+			case 2:
+				return 5;
+			case 3: 
+				return 7;
+			}
+		}
+	}
+
+	public override void Initialize ()
+	{
+		double rslt = 0;
+		int factor = Factor;
+
+		switch (CurrentDifficulty) {
+		case Difficulty.Easy:
+			fractions_num = 2;
+			demominator_max = 5;
+			factor_max = 2;
+			break;
+		default:
+		case Difficulty.Medium:
+			fractions_num = 4;
+			demominator_max = 3;
+			factor_max = 3;
+			break;
+		case Difficulty.Master:
+			fractions_num = 4;
+			demominator_max = 5;
+			factor_max = 4;
+			break;
+		}
+
+		fractions = new FormulaFraction [fractions_num];
+		for (int i = 0; i < fractions_num; i++) {
+			fractions[i] = new FormulaFraction (1 + random.Next (10), (1 + random.Next (demominator_max)) * factor,
+				(Operation) random.Next ((int) Operation.LastOperation));
+
+			if (i == 0)
+				fractions[0].operation = Operation.LastOperation; // No operation
+
+			switch (fractions[i].operation) {
+			case Operation.Addition:
+				rslt += fractions[i].Result;
+				break;
+			case Operation.Subtraction:
+				rslt -= fractions[i].Result;
+				break;
+			default:
+				rslt = fractions[i].Result;
+				break;
+			}			
+		}
+		
+		right_answer = String.Format (format_string, rslt);
+	}
+
+	public override void Draw (CairoContextEx gr, int area_width, int area_height)
+	{	
+		double fraction_size = 0.17;
+		double x =  0.5  - (fractions_num * fraction_size / 2), y = DrawAreaY + 0.3;
+		double offset_x = 0.12;
+
+		gr.Scale (area_width, area_height);
+		DrawBackground (gr);
+		PrepareGC (gr);
+		gr.SetLargeFont ();
+
+		for (int i = 0; i < fractions_num; i++) 
+		{
+			// Numerator
+			gr.DrawTextAlignedRight (x + offset_x, y, fractions[i].numerator.ToString ());
+
+			// Sign
+			gr.MoveTo (x, y + 0.03);	
+			switch (fractions[i].operation) {
+			case Operation.Addition:
+				gr.ShowText ("+");
+				break;	
+			case Operation.Subtraction:
+				gr.ShowText ("-");
+				break;
+			}
+			gr.Stroke ();
+
+			// Line
+			gr.MoveTo (x + 0.05, y + 0.02);
+			gr.LineTo (x + offset_x + 0.02,  y + 0.02);
+			gr.Stroke ();
+
+			// Denominator
+			gr.DrawTextAlignedRight (x + offset_x, y + 0.1, fractions[i].denominator.ToString ());
+
+			x += fraction_size;
+		}	
+	}
+
+	public override bool CheckAnswer (string answer)
+	{	
+		string num_a = string.Empty;
+		string num_b = string.Empty;
+		int a, b;
+		double rslt;
+		bool first = true;		
+
+		for (int c = 0; c < answer.Length; c++)
+		{
+			if (answer[c] < '0' || answer[c] > '9') {
+				if (answer[c] != '-') {
+					first = false;
+					continue;
+				}
+			}
+			
+			if (first == true)
+				num_a += answer[c];
+			else
+				num_b += answer[c];
+		}
+
+		try {
+
+			if (num_b != string.Empty) {
+				a = Int32.Parse (num_a);
+				b = Int32.Parse (num_b);
+				rslt = (double) a / (double) b;
+			} else {
+				rslt = Int32.Parse (num_a);
+			}
+		}
+
+		catch (FormatException) {
+			return false;
+		}
+		return right_answer.Equals (String.Format (format_string, rslt));
+	}
+}
+

Modified: trunk/src/GameManager.cs
==============================================================================
--- trunk/src/GameManager.cs	(original)
+++ trunk/src/GameManager.cs	Mon Apr 14 15:29:34 2008
@@ -67,6 +67,7 @@
 		typeof (CalculationTwoNumbers),
 		typeof (CalculationWhichNumber),
 		typeof (CalculationOperator),
+		typeof (CalculationFractions),
 	};
 
 	static Type[] MemoryTrainers = new Type[] 

Modified: trunk/src/Makefile.am
==============================================================================
--- trunk/src/Makefile.am	(original)
+++ trunk/src/Makefile.am	Mon Apr 14 15:29:34 2008
@@ -58,6 +58,7 @@
 	$(srcdir)/PuzzleCountCircles.cs		\
 	$(srcdir)/PuzzleEquation.cs		\
 	$(srcdir)/PuzzleQuadrilaterals.cs	\
+	$(srcdir)/CalculationFractions.cs	\
 	$(srcdir)/gbrainy.cs			
 
 ASSEMBLIES = \