From e383c27a8d81e9e3851992a0a9eea62cffc4961a Mon Sep 17 00:00:00 2001
From: Dan Ballard <dan@mindstab.net>
Date: Tue, 13 Sep 2011 13:21:40 -0700
Subject: [PATCH] command line player interface.  needs user move validation,
 ai move get, and actualy move do

---
 checkers.rb | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 81 insertions(+), 1 deletion(-)

diff --git a/checkers.rb b/checkers.rb
index 4115f73..9d36479 100644
--- a/checkers.rb
+++ b/checkers.rb
@@ -59,7 +59,7 @@ class Board
 			} 
 			str += "\n"
 		}
-		str += 'TEAM_1: ' + @stats[TEAM_1]['count'].to_s + ' -- TEAM_2: ' + @stats[TEAM_2]['count'].to_s  + "\n" 
+		str += 'White: ' + @stats[TEAM_1]['count'].to_s + ' -- Black: ' + @stats[TEAM_2]['count'].to_s  + "\n" 
 		return str
 	end
 
@@ -300,5 +300,85 @@ class Board
 			end
 		 end
 	end
+
+	def parse_coords(str)
+		if str.length != 2
+			return false
+		end
+		
+		y = str.downcase[0]
+		x = str[1]
+
+		if x >= '0' and x <= '7'
+			x = x.ord - '0'.ord
+		else 
+			return false
+		end
+
+		if y >= 'a' and y <= 'h'
+			y = y.ord - 'a'.ord
+		else 
+			return false
+		end
+		return [x,y]
+	end
+
+	def play()
+		setup()
+		color = ''
+		while color != 'w' and color != 'b'
+			print "Choose color ([W]hite or [B]lack): "
+			color = gets
+			color = color.downcase[0]
+		end
+
+		turn = 1
+		team = TEAM_1
+		while true
+			print "Turn " + turn.to_s + ": "
+			if team == TEAM_1
+				print "white "
+				if color == 'w'
+					print "(player)"
+				else
+					print "(ai)"
+				end
+			else
+				print "black "
+				if color == 'b'
+					print '(player)'
+				else
+					print '(ai)'
+				end
+			end
+			print "\n"
+			puts to_s()
+
+			if (team == TEAM_1 and color == 'w') or (team == TEAM_2 and color == 'b')
+				valid = false
+				while !valid
+					print "Move piece: "
+					from = gets
+					print "to: "
+					to = gets
+
+					from = parse_coords(from)
+					to = parse_coords(to)
+					if !to or !from
+						next
+					end
+					if team(to[0], to[y]) != team
+						next
+					end
+					valid = true
+				end
+			else
+				puts "AI MOVE"
+			end
+			team = opposite_team(team)
+			turn += 1
+		end
+	end
+
 end