1 files changed, 55 insertions, 1 deletions

diff --git a/console/voerbak.c b/console/voerbak.c
index 43eb6c6..1f47351 100644
--- a/console/voerbak.c
+++ b/console/voerbak.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <memory.h>
 #include <stdbool.h>
 
@@ -21,12 +22,63 @@ void printBoard(int board[], int width, int height) {
 	}
 }
 
+int recursiveSolve(int board[], int width, int height, int pos, int checkFor, int direction, int currentLength) {
+	printf("recursiveSolve call\n");
+	int overflow = (pos % width) + direction;
+	printf("overflow: %d\n", overflow);
+	if (overflow == width || overflow == -1)
+		return currentLength;
+	int newPos = pos + direction;
+	printf("newPos: %d\n", newPos);
+	if (newPos < 0 || newPos > width * height - 1)
+		return currentLength;
+	if (board[newPos] != checkFor)
+		return currentLength;
+	printf("recursion increase\n");
+	/* exit(0); */
+	return recursiveSolve(board, width, height, pos, checkFor, direction, currentLength + 1);
+}
+
+bool checkWin(int board[], int width, int height, int pos) {
+	int directions[8] = {
+		width,      // north
+		width + 1,  // northeast
+		1,          // east
+		-width + 1, // southeast
+		-width,     // south
+		-width -1,  // southwest
+		-1,         // west
+		width -1    // northwest
+	};
+
+	int values[8];
+	for (int i = 0; i < 8; i++)
+		values[i] = recursiveSolve(board, width, height, pos, board[pos], directions[i], 0);
+
+	int joinedValues[4] = {
+		values[0] + values[4],
+		values[1] + values[5],
+		values[2] + values[6],
+		values[3] + values[7]
+	};
+
+	bool won = false;
+	for (int i = 0; i < 4; i++) {
+		if (joinedValues[i] >= 3) {
+			won = true;
+			break;
+		}
+	}
+
+	return won;
+}
+
 void dropFisje(int board[], int width, int height, int column, int disc) {
 	for (int row = 0; row < height; row++) {
 		int pos = column + row * width;
 		if (board[pos] == 0) {
 			board[pos] = disc;
-			/* bool won = checkWin(board, width. height, pos); */
+			bool won = checkWin(board, width, height, pos);
 			/* printf("%d", won); */
 			return;
 		}
@@ -44,6 +96,8 @@ int main() {
 	int move = 0;
 	while (scanf("%d", &move) == 1) {
 		dropFisje(board, width, height, move - 1, player_1 + 1);
+		printf("New board:\n");
+		printBoard(board, width, height);
 		player_1 = !player_1;
 	}
 	printBoard(board, width, height);