added bishop moves

1 files changed, 36 insertions, 1 deletions

diff --git a/chess.c b/chess.c
index f4abecb..3657f63 100644
--- a/chess.c
+++ b/chess.c
@@ -148,6 +148,37 @@ vectorp_t get_knight_moves(int board[8][8], vector_t position, int color) {
 	}
 	return init_vectorp(moves, moveCount);
 }
+vectorp_t get_bishop_moves(int board[8][8], vector_t position, int color) {
+	vector_t* moves = malloc(13 * sizeof(vector_t));
+	int moveCount = 0;
+	for(int i = 0; i < 4; i++) {
+		int h = i < 2 ? 1 : -1;
+		int v = (i == 0 || i == 2) ? 1 : -1;
+		vector_t checkPos = init_vector(position.mx, position.my);
+		for(int d = 0; d < 7; d++) {
+			checkPos.mx += h;
+			checkPos.my += v;
+			if(in_board(checkPos)) {
+				if(is_empty(board, checkPos)) {
+					moves[moveCount] = init_vector(checkPos.mx, checkPos.my);
+					moveCount++;
+				}
+				else if(is_color(board, checkPos, !color)) {
+					moves[moveCount] = init_vector(checkPos.mx, checkPos.my);
+					moveCount++;
+					break;
+				}
+				else {
+					break;
+				}
+			}
+			else {
+				break;
+			}
+		}
+	}
+	return init_vectorp(moves, moveCount);
+}
 vectorp_t get_moves(int board[8][8], vector_t position, piece_t piece) {
 	int color = 0;
 	if(piece > 6) {
@@ -156,9 +187,13 @@ vectorp_t get_moves(int board[8][8], vector_t position, piece_t piece) {
 	}
 	if(piece == pawn) {
 		return get_pawn_moves(board, position, color);
-	} else if(piece == knight) {
+	}
+	else if(piece == knight) {
 		return get_knight_moves(board, position, color);
 	}
+	else if(piece == bishop) {
+		return get_bishop_moves(board, position, color);
+	}
 }
 vector_t user_input_pos() {
 	char* inputString = malloc(3 * sizeof(char));