Full search working, and horrifically slow even at depth 10

README

@@ -0,0 +1,13 @@
+Checkers AI engine
+
+Right now I'm working on the search.
+
+To test
+
+% load "checkers.rb"
+% b = Board.new
+% b.setup
+
+and then to look
+
+% b.search(TEAM_1)

checkers.rb

@@ -101,17 +101,18 @@ class Board
 	#
 	# base case: no jumps avail, return path
 	# jumps avail: do all and merge and return
-	def gen_jumps(path, x, y, team, x_mod, y_mod)
+	def gen_jumps(path, x, y, team, x_mod, y_mod, taken=[])
 		jumps = []
 		for xm in x_mod
 			new_x = x + xm
 			for ym in y_mod
 				new_y = y + ym
-				if valid_coords(new_x, new_y) and piece?(new_x, new_y) and team != team(new_x, new_y)
+				if valid_coords(new_x, new_y) and piece?(new_x, new_y) and !taken.include?([new_x, new_y]) and team != team(new_x, new_y)
+					taken.push([new_x, new_y])
 					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, team, x_mod, y_mod)
+						jumps += gen_jumps(path + [[final_x, final_y]], final_x, final_y, team, x_mod, y_mod, taken)
 					end
 				end
 			end
@@ -233,49 +234,69 @@ class Board
 		return boards
 	end
 
+	def score(team)
+		score = 0
+		score += @stats[team]['count']
+		score += 12 - @stats[opposite_team(team)]['count']
+		if @stats[opposite_team(team)]['count'] == 0
+			score += 12
+		elsif @stats[team]['count'] == 0
+			score -= 12
+		end
+		return score	
+	end
+
 	def search(team)
-		@top_depth = 100
+		@top_depth = 10
-		search_do(team, @top_depth)
+		search_do(team, @top_depth, 100.0, 0.0, "R")
 	end
 
-	def search_do(team, depth, percent)
+	def search_do(team, depth, percent, last_percent, location)
+		#puts location
 		if depth == 0
-			puts "DONE"
+			#puts "DONE"
-			return {TEAM_1 => @stats[TEAM_1]['count'], TEAM_2 => @stats[TEAM_2]['count']}
+			return score(team)
 		end
+		max = -100
 
-		max = @stats[team]['count']
+		#if team == TEAM_1
-		min = 0
+		#	puts depth.to_s + ": TEAM_1's turn:"
-
+		#else
-		if team == TEAM_1
+		#	puts depth.to_s + ": TEAM_2's turn:"
-			puts depth.to_s + ": TEAM_1's turn:"
+		#end
-		else
+		#puts to_s #moves[0].to_s
-			puts depth.to_s + ": TEAM_2's turn:"
-		end
-		puts to_s #moves[0].to_s
 		if @stats[TEAM_1]['count'] == 0
 			puts "TEAM_2 WON!"
+			return score(team) 
 		elsif @stats[TEAM_2]['count'] == 0
 			puts "TEAM_1 WON!"
+			return score(team) 
 		else
 			moves = gen_next_move_boards(team)
 			if moves == []
 				puts "NO MOVES AVAILABLE?"
+				return score(team)
 			else
+				done = 0.0
 				item_percent = percent/moves.length
-        results = moves[0].search_do(opposite_team(team), depth -1, item_percent)
+
-        if item_percent >= 0.1
+				for i in 0..moves.length-1 do
-          # UM WE NEED PERCENT SO FAR
+					#moves.each { |move|
+					move = moves[i]
+					#puts "SEARCH"
+        				sub_score = move.search_do(opposite_team(team), depth -1, item_percent, last_percent+done, location + "." +i.to_s )
+       					done += item_percent
+					if done >= 0.0001
+          					last_percent += done;
+						puts "%.5f" % last_percent + "% depth: " + depth.to_s + " max: " + max.to_s
+						done = 0.0
         				end
-				if results[opposite_team(team)] == 0
+					#puts "Score: " + sub_score.to_s
-					return {team => max, opposite_team(team) => 0}
+					if sub_score > max
-				elsif results[team] == max
+						max = sub_score
-					return {team => max, opposite_team(team) => results[opposite_team(team)]}
-				else
-					if results[team] > min
-						min = results[team]
 					end
 				end
+				return max
 			end
 		 end
 	end