From c3311778cd7237bdff59f9106eca3dc367737772 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter.bender@gmail.com>
Date: Fri, 04 Mar 2011 20:40:06 +0000
Subject: new project

---
(limited to 'grid.py')

diff --git a/grid.py b/grid.py
new file mode 100644
index 0000000..abf08d7
--- /dev/null
+++ b/grid.py
@@ -0,0 +1,147 @@
+#Copyright (c) 2009-11 Walter Bender
+
+# 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 3 of the License, or
+# (at your option) any later version.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+import gtk
+
+from deck import Deck
+
+ROW = 8
+COL = 8
+
+
+class Grid:
+    ''' Class for managing ROWxCOL matrix of cards '''
+
+    def __init__(self, width, height, card_width, card_height):
+        # the playing surface
+        self.grid = []
+
+        # the tiles in your hand        
+        self.hand = []
+
+        for i in range(ROW * COL):
+            self.grid.append(None)
+
+        for i in range(COL):
+            self.hand.append(None)
+
+        # card spacing
+        self.left_hand = int(card_width / 2)
+        self.left = int((width - (card_width * COL)) / 2 + card_width)
+        self.xinc = int(card_width)
+        self.top = 0
+        self.yinc = int(card_height)
+
+    def deal(self, deck):
+        ''' Deal an initial set of cards to the hand '''
+        for i in range(COL):
+            self.hand[i] = deck.deal_next_card()
+            self.place_a_card(self.hand[i], self.hand_to_xy(i)[0],
+                                  self.hand_to_xy(i)[1])
+
+        # and empty the grid
+        for i in range(ROW * COL):
+            self.grid[i] = None
+
+    def redeal(self, deck):
+        ''' Deal another set of cards to the hand '''
+        for i in range(COL):
+            self.hand[i] = deck.deal_next_card()
+            self.place_a_card(self.hand[i], self.hand_to_xy(i)[0],
+                                  self.hand_to_xy(i)[1])
+
+    def find_empty_slot(self):
+        ''' Is there an empty slot in the hand? '''
+        for i in range(COL):
+            if self.hand[i] == None:
+                return i
+        return None
+
+    def cards_in_hand(self):
+        ''' How many cards are in the hand? '''
+        return COL - self.hand.count(None)
+
+    def cards_in_grid(self):
+        ''' How many cards are on the grid? '''
+        return ROW * COL - self.grid.count(None)
+
+    def restore(self, deck, saved_card_index):
+        ''' Restore cards to grid upon resume or share. '''
+        # TODO: restore hand too
+        self.hide()
+        j = 0
+        for i in saved_card_index:
+            if i is None:
+                self.grid[j] = None
+            else:
+                self.grid[j] = deck.index_to_card(i)
+            j += 1
+        self.show()
+
+    def place_a_card(self, c, x, y):
+        ''' Place a card at position x,y and display it. '''
+        if c is not None:
+            c.spr.move((x, y))
+            c.spr.set_layer(2000)
+
+    def xy_to_grid(self, x, y):
+        ''' Convert from sprite x,y to grid index. '''
+        return COL * int((y - self.top) / self.yinc) + \
+               int((x - self.left) / self.xinc)
+
+    def xy_to_hand(self, x, y):
+        ''' Convert from sprite x,y to hand index. '''
+        return int((y - self.top) / self.yinc)
+
+    def grid_to_xy(self, i):
+        ''' Convert from grid index to sprite x,y. '''
+        return (int((self.left + i % COL * self.xinc)),
+                int((self.top + (i / COL) * self.yinc)))
+
+    def hand_to_xy(self, i):
+        ''' Convert from hand index to sprite x,y. '''
+        return ((self.left_hand, (self.top + i * self.yinc)))
+
+    def grid_to_spr(self, i):
+        ''' Return the sprite in grid-position i. '''
+        return self.grid[i].spr
+
+    def hand_to_spr(self, i):
+        ''' Return the sprite in hand-position i. '''
+        return self.hand[i].spr
+
+    def spr_to_grid(self, spr):
+        ''' Return the index of a sprite in grid. '''
+        for i in range(ROW * COL):
+            if self.grid[i] is not None and self.grid[i].spr == spr:
+                return(i)
+        return None
+
+    def spr_to_hand(self, spr):
+        ''' Return the index of a sprite in hand. '''
+        for i in range(COL):
+            if self.hand[i] is not None and self.hand[i].spr == spr:
+                return(i)
+        return None
+
+    def hide(self):
+        ''' Hide all of the cards on the grid. '''
+        for i in range(ROW * COL):
+            if self.grid[i] is not None:
+                self.grid[i].hide_card()
+
+    def show(self):
+        ''' Restore all card on the grid to their x,y positions. '''
+        for i in range(ROW * COL):
+            self.place_a_card(self.grid[i],self.grid_to_xy(i)[0],
+                              self.grid_to_xy(i)[1])
+  
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