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/*
* 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 System;
using Cairo;
using Mono.Unix;
public class PuzzleBalance : Game
{
private const int elements = 5;
private int group;
private int [] balances = new int []
{
2,3,2,0,0, 1,3,1,1,1,
3,3,1,0,0, 2,2,2,1,0,
3,2,2,0,0, 0,0,0,0,0,
2,2,3,0,0, 3,2,1,1,0,
1,2,2,0,0, 3,1,1,0,0,
3,3,1,0,0, 0,0,0,0,0,
2,2,0,0,0, 2,1,1,0,0,
3,2,0,0,0, 1,1,1,2,0,
2,2,3,0,0, 0,0,0,0,0,
};
private const double figure_width = 0.1, figure_height = 0.1, space_width = 0.05, space_height = 0;
public override string Name {
get {return Catalog.GetString ("Balance");}
}
public override string Question {
get {return Catalog.GetString ("How many triangles are needed in the right part of the last figure to keep it balanced?");}
}
public override string Answer {
get {
string answer = base.Answer + " ";
answer += Catalog.GetString ("Every triangle counts as 1, each diamond as 2 and each square as 3.");
return answer;
}
}
public override string Tip {
get { return Catalog.GetString ("Every diamond counts as two triangles.");}
}
public override void Initialize ()
{
int ans = 0;
group = random.Next (3);
for (int i = 0; i < elements; i++)
ans += balances [(group * elements * 6) + (4 * elements) + i];
right_answer = ans.ToString ();
}
public void DrawBalance (CairoContextEx gr, double x, double y, int index, bool full)
{
const double width = 0.5;
double fig_x = x + 0.1, fig_y = y - 0.11;
int total = (full == true) ? (elements * 2) : elements;
gr.Rectangle (x + 0.05, y - 0.12, 0.38, 0.08);
gr.Stroke ();
gr.Rectangle (x + 0.5, y - 0.12, 0.38, 0.08);
gr.Stroke ();
for (int i = 0; i < total; i++) {
switch (balances[i + index]) {
case 1:
gr.DrawEquilateralTriangle (fig_x, fig_y, 0.05);
break;
case 2:
gr.DrawDiamond (fig_x, fig_y, 0.05);
break;
case 3:
gr.Rectangle (fig_x, fig_y + 0.005, 0.045, 0.045);
break;
}
if (i == elements - 1)
fig_x = x + 0.54;
else
fig_x += 0.07;
}
x += 0.2;
y += 0.01;
gr.MoveTo (x, y);
gr.LineTo (x + width, y);
gr.LineTo (x + width, y - 0.05);
gr.Stroke ();
gr.MoveTo (x , y);
gr.LineTo (x , y - 0.05);
gr.Stroke ();
gr.DrawEquilateralTriangle (x + (width / 2) - 0.04, y, 0.08);
gr.Stroke ();
}
public override void Draw (CairoContextEx gr, int area_width, int area_height)
{
double x = 0.05, y = DrawAreaY + 0.1;
base.Draw (gr, area_width, area_height);
DrawBalance (gr, x, y, group * elements * 6, true);
y += 0.3;
DrawBalance (gr, x, y, (group * elements * 6) + 1 * elements * 2, true);
y += 0.3;
DrawBalance (gr, x, y, (group * elements * 6) + 2 * elements * 2, false);
}
}
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