From 7ef39a806620b05555125f4fdb99889442a4d6e3 Mon Sep 17 00:00:00 2001
From: KaiStevenson <kai@kaistevenson.com>
Date: Tue, 6 Dec 2022 22:16:12 -0800
Subject: separated code into multiple files

---
 chesshelpers.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 chesshelpers.c

(limited to 'chesshelpers.c')

diff --git a/chesshelpers.c b/chesshelpers.c
new file mode 100644
index 0000000..ed2ad89
--- /dev/null
+++ b/chesshelpers.c
@@ -0,0 +1,62 @@
+#include <stdlib.h>
+#include <string.h>
+#include "vector.h"
+#include "chesshelpers.h"
+
+int in_board(vector_t position) {
+	return position.mx < 8 && position.mx >= 0 && position.my < 8 && position.my >= 0;
+}
+int is_empty(int board[8][8], vector_t position) {
+	return board[position.mx][position.my] == 0;
+}
+int is_color(int board[8][8], vector_t position, int color) {
+	if(color == 0) {
+		return board[position.mx][position.my] >= 1 && board[position.mx][position.my] <= 6;
+	}	
+	else {
+		return board[position.mx][position.my] >= 7;
+	}
+}
+//converts board coordinates into algebraic notation
+char* get_readable_coords(vector_t position) {
+	char* output = malloc(3 * sizeof(char));
+	output[0] = 'a' + position.mx;
+	output[1] = '8' - position.my;
+	output[2] = '\0';
+	return output;
+}
+//gets the proper algebraic notation for the move
+char* get_move_name(int board[8][8], vector_t origin, vector_t end) {
+	int piece = board[origin.mx][origin.my];
+	if(piece > 6) {
+		piece -= 6;
+	}
+	if(piece != 1) {
+		char cPiece = piece == pawn ? 'P' : piece == knight ? 'N' : piece == bishop ? 'B' : piece == rook ? 'R' : piece == queen ? 'Q' : 'K';
+		int isCapture = board[end.mx][end.my] != 0;
+		char* output = calloc(isCapture ? 5 : 4, sizeof(char));
+		output[0] = cPiece;
+		if(isCapture) {
+			output[1] = 'x';
+		}
+		char* rEnd = get_readable_coords(end);
+		strcat(output, rEnd);
+		free(rEnd);
+		output[isCapture ? 4 : 3] = '\0';
+		return output;
+	}
+	else {
+		int isCapture = board[end.mx][end.my] != 0;
+		char* output = calloc(isCapture ? 5 : 3, sizeof(char));
+		if(isCapture) {
+			output[0] = 'a' + origin.mx;
+			output[1] = 'x';
+		}
+		char* rEnd = get_readable_coords(end);
+		strcat(output, rEnd);
+		free(rEnd);
+		output[isCapture ? 4 : 2] = '\0';
+		return output;
+	}
+}
+
-- 
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