first draft (HAS BUGS, DOES NOT WORK)

src/chess.c

@@ -1,12 +1,11 @@
 #include <stdio.h>
-#include <stdlib.h>
 #include "chess.h"
 #include "util.h"
 
-void init_board(board_t *board) {
+void init_board(board_t board) {
     for (int i = 0; i < BOARD_VERTICAL; i++) {
         for (int j = 0; j < BOARD_HORIZONTAL; j++) {
-            *board[i][j] = BOARD_DEFAULT_CONFIG[i][j];
+            board[j][i] = BOARD_DEFAULT_CONFIG[i][j];
         }
     }
 }
@@ -52,10 +51,9 @@ bool is_move_in_bounds(move_t move) {
 }
 
 bool get_move(move_t *move) {
-    clear_stdin();
-
     char _x_from, _x_to;
     int _y_from, _y_to;
+    printf("move >> ");
     scanf(" %c%d %c%d", 
         &_x_from,
         &_y_from,
@@ -202,11 +200,11 @@ bool check_captures(board_t *board, player_e player, captured_t *captured, move_
     if (is_dest_opponent(*board, player, move)) {
         switch (player) {
             case WHITE:
-                captured->white[captured->white_n++] = abs(*board[move.to.y][move.to.x]);
+                captured->white[captured->white_n++] = *board[move.to.y][move.to.x];
                 *board[move.to.y][move.to.x] = NONE;
                 break;
             case BLACK:
-                captured->white[captured->white_n++] = abs(*board[move.to.y][move.to.x]);
+                captured->white[captured->white_n++] = *board[move.to.y][move.to.x];
                 *board[move.to.y][move.to.x] = NONE;
                 break;
         }
@@ -378,7 +376,9 @@ end_condition_e check_end(board_t board, player_e player, move_t move) {
 }
 
 end_condition_e perform_move(board_t *board, player_e player, captured_t *captured, move_t move) {
-    if (validate_move(*board, player, move)) {
+    bool valid = validate_move(*board, player, move);
+    printf("move valid? %d", valid);
+    if (valid) {
         if (
             *board[move.to.y][move.to.x] != WKING || // accounting for both players
             *board[move.to.y][move.to.x] != BKING    // you cannot capture a king

src/chess.h

@@ -21,8 +21,6 @@
 // type abstractions
 typedef enum { WHITE, BLACK } player_e;
 
-typedef int board_t[BOARD_VERTICAL][BOARD_HORIZONTAL];
-
 #define PIECE_COUNT 13 // how many unique pieces are there
 #define MAX_PIECE_MOVE_COUNT 27 // the max possible num of options where to move in one moment
 typedef enum {
@@ -43,6 +41,8 @@ typedef enum {
     BKING
 } piece_e;
 
+typedef piece_e board_t[BOARD_VERTICAL][BOARD_HORIZONTAL];
+
 typedef struct {
     int x;
     int y;
@@ -95,7 +95,7 @@ typedef struct {
   * absolute x,y values -> e.g. the rook can move 
   * up, down, left, right * n -> and then bounds & edge cases are checked
   */
-#define DEFAULT_VALID_MOVES (valid_move_t[PIECE_COUNT]){\
+#define DEFAULT_VALID_MOVES {\
     {NONE, {}, 0},\
     \
     {WPAWN, {\
@@ -169,7 +169,7 @@ typedef struct {
 } captured_t;
 
 // initializes the board with the default configuration of pieces
-void init_board(board_t *board);
+void init_board(board_t board);
 
 // selects the player to currently play
 // if it is the first round, it selects white

src/main.c

@@ -1,7 +1,9 @@
 // a chess implementation in pure C :)
 
 #include "chess.h"
+#include "render.h"
 #include <stdlib.h>
+#include <stdio.h>
 
 /**
  * steps to victory:
@@ -27,7 +29,7 @@ int main() {
     
     // algo begin
 
-    init_board(&board);
+    init_board(board);
 
     show_help();
 
@@ -36,6 +38,8 @@ int main() {
         
         select_player(&player, round_count);
         
+        show_board(board, player);
+
         get_move(&move);
 
         end_condition = perform_move(&board, player, &captured, move);

src/render.c

@@ -0,0 +1,28 @@
+#include "render.h"
+#include "chess.h"
+#include <stdio.h>
+
+void show_board(board_t board, player_e player) {
+    printf("\n    ");
+    for (int i = 0; i < BOARD_HORIZONTAL; i++) {
+        printf("%-2c ", i+97);
+    }
+    printf("\n\n");
+    for (int i = 0; i < BOARD_VERTICAL; i++) {
+        printf("%-2d [", i+1);
+        for (int j = 0; j < BOARD_HORIZONTAL-1; j++) {
+            printf("%-2d ", board[j][i]);
+        }
+        printf("%d]\n", board[BOARD_HORIZONTAL-1][i]);
+    }
+
+    printf("\ncurrently plays: ");
+    switch (player) {
+        case WHITE:
+            printf("WHITE\n");
+            break;
+        case BLACK:
+            printf("BLACK\n");
+            break;
+    }
+}

src/render.h

@@ -0,0 +1,8 @@
+#ifndef RENDER_H
+#define RENDER_H
+
+#include "chess.h"
+
+void show_board(board_t board, player_e player);
+
+#endif // RENDER_H

src/util.c

@@ -2,7 +2,7 @@
 #include <stdio.h>
 
 void clear_stdin() {
-    while (getchar() != '\n');
+    while ((getchar()) != '\n');
 }
 
 bool is_int_in_range(int x, int start, int end) {