From 2fe4352955042ef5415f6830d8c9d05d39159b7e Mon Sep 17 00:00:00 2001
From: lonkaars <l.leblansch@gmail.com>
Date: Wed, 24 Feb 2021 09:50:58 +0100
Subject: added diewertje cpu solver

---
 voerbak/diewertje.c |  8 ++++++++
 voerbak/diewertje.h | 11 +++++++++++
 voerbak/solvers.c   | 12 ++++++++++++
 voerbak/solvers.h   |  3 +++
 voerbak/voerbak.c   | 11 ++++++++++-
 voerbak/voerbak.h   |  4 +---
 6 files changed, 45 insertions(+), 4 deletions(-)
 create mode 100644 voerbak/diewertje.c
 create mode 100644 voerbak/diewertje.h
 create mode 100644 voerbak/solvers.c
 create mode 100644 voerbak/solvers.h

diff --git a/voerbak/diewertje.c b/voerbak/diewertje.c
new file mode 100644
index 0000000..93a8596
--- /dev/null
+++ b/voerbak/diewertje.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+#include "board.h"
+
+int diewertje(Board *b) {
+	printf("Got a diewertje request, from a board that's %dx%d\n", b->width, b->height);
+	return 2;
+}
diff --git a/voerbak/diewertje.h b/voerbak/diewertje.h
new file mode 100644
index 0000000..617a6f4
--- /dev/null
+++ b/voerbak/diewertje.h
@@ -0,0 +1,11 @@
+#include "board.h"
+
+/**
+ * @brief Diewertje game solver
+ *
+ * @param Board* game board to decide next move for
+ *
+ * @return int Column to place disc in
+ */
+int diewertje(Board*);
+
diff --git a/voerbak/solvers.c b/voerbak/solvers.c
new file mode 100644
index 0000000..e3aab12
--- /dev/null
+++ b/voerbak/solvers.c
@@ -0,0 +1,12 @@
+#include <string.h>
+#include <stdio.h>
+
+#include "board.h"
+
+#include "diewertje.h"
+
+int cpuMove(Board* b, char* solver) {
+	if (strcmp(solver, "diewertje") == 0) return diewertje(b);
+
+	return 0;
+}
diff --git a/voerbak/solvers.h b/voerbak/solvers.h
new file mode 100644
index 0000000..295edf8
--- /dev/null
+++ b/voerbak/solvers.h
@@ -0,0 +1,3 @@
+#include "board.h"
+
+int cpuMove(Board*, char*);
diff --git a/voerbak/voerbak.c b/voerbak/voerbak.c
index d1982fa..2782163 100644
--- a/voerbak/voerbak.c
+++ b/voerbak/voerbak.c
@@ -6,6 +6,7 @@
 #include "board.h"
 #include "messages.h"
 #include "argparse.h"
+#include "solvers.h"
 
 #define EMPTY ""
 
@@ -14,6 +15,7 @@ int main(int argc, char* argv[]) {
 
 	Board *gameBoard = createBoard(arguments.width, arguments.height);
 
+	bool cpu_2 = strlen(arguments.solver) > 0;
 	bool player_1 = true;
 	int move = 0;
 	char* message = malloc(1); // this is weird and i don't understand it but it prevents a segmentation fault or something
@@ -26,13 +28,15 @@ int main(int argc, char* argv[]) {
 			continue;
 		}
 
+		move:
+
 		if (move == 0) break;
 		if (move < 1 || move > gameBoard->width) continue;
 
 		bool dropSuccess = dropFisje(gameBoard, move - 1, player_1 + 1);
 
 		player_1 = player_1 ^ dropSuccess; // only flip turns on successful drop
-		printf("m:%s\n", player_1 ? "true" : "false");
+		!cpu_2 && printf("m:%s\n", player_1 ? "true" : "false");
 		fflush(stdout);
 
 		if (boardFull(gameBoard)) {
@@ -41,6 +45,11 @@ int main(int argc, char* argv[]) {
 		}
 
 		printBoard(gameBoard);
+
+		if (cpu_2 && !player_1) {
+			move = cpuMove(gameBoard, arguments.solver);
+			goto move;
+		}
 	}
 
 	return 0;
diff --git a/voerbak/voerbak.h b/voerbak/voerbak.h
index d44f382..a828d02 100644
--- a/voerbak/voerbak.h
+++ b/voerbak/voerbak.h
@@ -2,7 +2,5 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-/**
- * @brief Main function
- */
+/** @brief Main function */
 int main();
-- 
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