From 3d356b409005ffeadfc8493dadfec5dc8cd4f4d4 Mon Sep 17 00:00:00 2001
From: eug-vs <eug-vs@keemail.me>
Date: Thu, 10 Jun 2021 13:17:55 +0300
Subject: feat: print chess board to stdout, remove ncurses

---
 Makefile     |  4 +--
 src/config.h |  2 ++
 src/main.c   | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++----
 src/pieces.h | 24 ++++++++++++++++
 4 files changed, 114 insertions(+), 8 deletions(-)
 create mode 100644 src/config.h
 create mode 100644 src/pieces.h

diff --git a/Makefile b/Makefile
index b682fe2..94e43d6 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 CC=tcc
-CFLAGS=-lncurses
+CFLAGS=-g
 SRC=src
 OBJ=obj
 SOURCES=$(wildcard $(SRC)/*.c)
@@ -15,7 +15,7 @@ build: $(BIN)
 $(BIN): $(OBJECTS)
 	$(CC) $(CFLAGS) $(OBJECTS) -o $(BIN)
 
-$(OBJ)/%.o: $(SRC)/%.c
+$(OBJ)/%.o: $(SRC)/%.c $(SRC)/*.h
 	$(CC) -c $< -o $@
 
 clean:
diff --git a/src/config.h b/src/config.h
new file mode 100644
index 0000000..60d60c3
--- /dev/null
+++ b/src/config.h
@@ -0,0 +1,2 @@
+#define BOARD_SIZE 8
+#define DEFAULT_FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"
diff --git a/src/main.c b/src/main.c
index 49db27a..62b4692 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,11 +1,91 @@
-#include <ncurses.h>
+#include <locale.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "config.h"
+#include "pieces.h"
+
+
+void print_board(int board[BOARD_SIZE][BOARD_SIZE]) {
+  for (int rank = BOARD_SIZE - 1; rank >= 0; rank--) {
+    printf("%i|", rank + 1);
+    for (int file = 0; file < BOARD_SIZE; file++) {
+      int piece = board[rank][file];
+      printf("%s ", pieces[piece]);
+    }
+    printf("\n");
+  }
+  printf("  a b c d e f g h\n");
+}
+
+void parse_FEN(char* FEN, int board[BOARD_SIZE][BOARD_SIZE]) {
+  // TODO: parse everything, not position only
+  int rank = 7;
+  int file = 0;
+  size_t lenght = strlen(FEN);
+
+  for (int k = 0; k < lenght; k++) {
+    if (FEN[k] > '0' && FEN[k] <= '8') {
+      int last_file = file + FEN[k] - '0';
+      for (file; file < last_file; file++) {
+        board[rank][file] = EMPTY;
+      }
+    } else {
+      switch (FEN[k]) {
+        case 'r':
+          board[rank][file] = BLACK | ROOK;
+          break;
+        case 'R':
+          board[rank][file] = ROOK;
+          break;
+        case 'n':
+          board[rank][file] = BLACK | KNIGHT;
+          break;
+        case 'N':
+          board[rank][file] = KNIGHT;
+          break;
+        case 'b':
+          board[rank][file] = BLACK | BISHOP;
+          break;
+        case 'B':
+          board[rank][file] = BISHOP;
+          break;
+        case 'q':
+          board[rank][file] = BLACK | QUEEN;
+          break;
+        case 'Q':
+          board[rank][file] = QUEEN;
+          break;
+        case 'k':
+          board[rank][file] = BLACK | KING;
+          break;
+        case 'K':
+          board[rank][file] = KING;
+          break;
+        case 'p':
+          board[rank][file] = BLACK | PAWN;
+          break;
+        case 'P':
+          board[rank][file] = PAWN;
+          break;
+        case '/':
+          rank--;
+          file = -1; // so that it becomes 0
+          break;
+        case ' ':
+          return;
+        default:
+          board[rank][file] = KNIGHT;
+      }
+      file++;
+    }
+  }
+}
 
 int main() {
-	initscr();
-	printw("Hello, world!");
-	refresh();
-	getch();
-	endwin();
+  int board[BOARD_SIZE][BOARD_SIZE];
+  parse_FEN(DEFAULT_FEN, board);
+  print_board(board);
 
 	return 0;
 }
diff --git a/src/pieces.h b/src/pieces.h
new file mode 100644
index 0000000..10d4eec
--- /dev/null
+++ b/src/pieces.h
@@ -0,0 +1,24 @@
+#define WHITE  0b0000
+#define BLACK  0b0001
+
+#define EMPTY  0b0000
+#define VISUAL 0b0001
+
+#define PAWN   0b0010
+#define KNIGHT 0b0100
+#define BISHOP 0b0110
+#define ROOK   0b1000
+#define QUEEN  0b1010
+#define KING   0b1100
+
+
+char* pieces[] = {
+  ".", "#",
+  "♟︎", "♙",
+  "♞", "♘",
+  "♝", "♗",
+  "♜", "♖",
+  "♛", "♕",
+  "♚", "♔",
+};
+
-- 
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