From 1e75bdd77aad81cf25640b729f8518741095645e Mon Sep 17 00:00:00 2001
From: Dan Ballard <dan@mindstab.net>
Date: Tue, 6 Sep 2011 21:59:31 -0700
Subject: [PATCH] full forward motion and jump simulation and run_1st_path test
 method

---
 checkers.rb | 71 ++++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 60 insertions(+), 11 deletions(-)

diff --git a/checkers.rb b/checkers.rb
index 85e797a..1d899be 100644
--- a/checkers.rb
+++ b/checkers.rb
@@ -11,6 +11,8 @@ BOARD_EMPTY = ' _ '
 BOARD_SIZE = 8
 
 class Board
+	attr :stats, true
+
 	def initialize()
 		@board = Array.new(BOARD_SIZE) {|i| Array.new(BOARD_SIZE, BOARD_EMPTY)}
 		@stats = {TEAM_1 => {}, TEAM_2 => {}}
@@ -19,9 +21,9 @@ class Board
 	def setup()
 		0.step(BOARD_SIZE) {|i|
 		       	peice = (i < 3 ? TEAM_1_MAN : TEAM_2_MAN)	
-			if [0,2,5,7].include? i
+			if [0,2,6].include? i
 				start = 1
-			elsif [1,6].include? i
+			elsif [1,5,7].include? i
 				start = 0
 			else
 				next
@@ -57,6 +59,7 @@ class Board
 			} 
 			str += "\n"
 		}
+		str += 'TEAM_1: ' + @stats[TEAM_1]['count'].to_s + ' -- TEAM_2: ' + @stats[TEAM_2]['count'].to_s  + "\n" 
 		return str
 	end
 
@@ -75,7 +78,7 @@ class Board
 	end
 
 	def valid_coords(x, y)
-		return (x >= 0 and x < BOARD_SIZE and y >= 0 and y <= BOARD_SIZE)
+		return (x >= 0 and x < BOARD_SIZE and y >= 0 and y < BOARD_SIZE)
 	end
 
 	def gen_moves(x, y, x_mod, y_mod)
@@ -108,7 +111,7 @@ class Board
 					final_x = new_x + xm
 					final_y = new_y + ym
 					if (valid_coords(final_x, final_y) and empty?(final_x, final_y))
-						jumps += gen_jumps(path + [[final_x, final_y]], final_x, final_y, x_mod, y_mod)
+						jumps += gen_jumps(path + [[final_x, final_y]], final_x, final_y, team, x_mod, y_mod)
 					end
 				end
 			end
@@ -140,6 +143,10 @@ class Board
 		return EMPTY
 	end
 
+	def opposite_team(team)
+		return (team == TEAM_1 ? TEAM_2 : TEAM_1)
+	end
+
 	def man?(x, y)
 		return (@board[y][x] == TEAM_1_MAN or @board[y][x] == TEAM_2_MAN)
 	end
@@ -171,17 +178,42 @@ class Board
 				b.set(x, y, get(x, y))
 			end
 		end
+		b.stats[TEAM_1] = @stats[TEAM_1].dup
+		b.stats[TEAM_2] = @stats[TEAM_2].dup
 		return b
 	end
 
-	#def do_move(x, y, move, team)
-	#	move.each
+	def between(c1, c2)
+		return [ c2[0] + (c1[0]-c2[0])/2, c2[1] + (c1[1]-c2[1])/2 ]
+	end
 
-	def gen_next_move_boards()
+	# doesnt validate
+	def do_move(x, y, move, team)
+		puts "MOVES " + move.to_s
+		if move[0].is_a?(Array)
+			# jump
+			move.each { |jump|
+				enemy = between([x,y], jump)
+				set(enemy[0], enemy[1], BOARD_EMPTY)
+				@stats[opposite_team(team)]['count'] -= 1
+				piece = get(x, y)
+				set(x, y, BOARD_EMPTY)
+				set(jump[0], jump[1], piece)
+			}
+		else
+			# move
+			piece = get(x, y)
+			set(x, y, BOARD_EMPTY)
+			set(move[0], move[1], piece)
+		end
+	end	
+
+
+	def gen_next_move_boards(team)
 		boards = []
 		for x in 0..(BOARD_SIZE-1)
 			for y in 0..(BOARD_SIZE-1)
-				if piece?(x, y)
+				if piece?(x, y) and team(x,y) == team
 					moves = piece_valid_moves(x, y, team(x, y))
 					moves.each { |move|
 						board = dup()
@@ -194,9 +226,26 @@ class Board
 		return boards
 	end
 
-
-
-
+	def run_1st_path(team)
+		if team == TEAM_1
+			puts "TEAM_1's turn:"
+		else
+			puts "TEAM_2'2 turn:"
+		end
+		puts to_s #moves[0].to_s
+		if @stats[TEAM_1]['count'] == 0
+			puts "TEAM_2 WON!"
+		elsif @stats[TEAM_2]['count'] == 0
+			puts "TEAM_1 WON!"
+		else
+			moves = gen_next_move_boards(team)
+			if moves == []
+				puts "NO MOVES AVAILABLE?"
+			else
+				moves[0].run_1st_path(opposite_team(team))
+			end
+		end
+	end
 end
 
 b = Board.new()