From 3c18dd46b52b1e45341df1f9423c1654462fbb09 Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom.smeding@gmail.com>
Date: Mon, 2 Jul 2018 21:38:18 +0200
Subject: Make AI choice configurable

---
 Makefile      |  6 +++++-
 compile_ai.sh | 16 ++++++++++++++++
 main.cpp      | 12 +++++++++++-
 3 files changed, 32 insertions(+), 2 deletions(-)
 create mode 100755 compile_ai.sh

diff --git a/Makefile b/Makefile
index 2be8c3c..7536e18 100644
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,10 @@ CXXFLAGS = -Wall -Wextra -O3 -std=c++17 -fwrapv -flto
 
 TARGET = main
 
+ifneq ($(value AI),)
+	CXXFLAGS += "-DAI_CHOICE=$(value AI)"
+endif
+
 .PHONY: all clean
 
 all: $(TARGET)
@@ -12,7 +16,7 @@ clean:
 
 
 main: $(patsubst %.cpp,%.o,$(wildcard *.cpp))
-	$(CXX) $(CXXFLAGS) $^ -o $@ $(LDFLAGS)
+	$(CXX) $(CXXFLAGS) $^ -o $@
 
 %.o: %.cpp $(wildcard *.h)
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
diff --git a/compile_ai.sh b/compile_ai.sh
new file mode 100755
index 0000000..a24cd3f
--- /dev/null
+++ b/compile_ai.sh
@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -eo pipefail
+
+cd "$(dirname "$0")"
+
+if [[ -f main ]]; then
+	have_main=1
+	mv main .compile_ai_main_bak
+fi
+
+make AI="$1" -W main.cpp
+mv main "$1"
+
+if [[ $have_main -eq 1 ]]; then
+	mv .compile_ai_main_bak main
+fi
diff --git a/main.cpp b/main.cpp
index 4fb66a9..9dfdfe9 100644
--- a/main.cpp
+++ b/main.cpp
@@ -8,6 +8,14 @@
 
 using namespace std;
 
+#ifndef AI_CHOICE
+#define AI_CHOICE MC
+#endif
+
+#define STR_(x) #x
+#define STR(x) STR_(x)
+#define AI_CHOICE_STR STR(AI_CHOICE)
+
 
 static void skipLine(istream &stream) {
 	while (stream.get() != '\n');
@@ -15,7 +23,7 @@ static void skipLine(istream &stream) {
 
 static Move findMove(const Board &bd, int player) {
 	clock_t start = clock();
-	Move mv = AI::MC::findMove(bd, player);
+	Move mv = AI:: AI_CHOICE ::findMove(bd, player);
 	clock_t diff = clock() - start;
 	cerr << "Time taken: " << (double)diff / CLOCKS_PER_SEC << " seconds" << endl;
 	return mv;
@@ -26,6 +34,8 @@ int main() {
 	gettimeofday(&tv, nullptr);
 	srand(tv.tv_sec * 1000000UL + tv.tv_usec);
 
+	cerr << "Using AI: " << AI_CHOICE_STR << endl;
+
 	Board bd = Board::makeInitial();
 	// cerr << bd << endl;
 
-- 
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