Starting to add fenstrings

src/game_logic/fen_strings.c

@@ -0,0 +1,111 @@
+#include "fen_strings.h"
+#include "game_state.h"
+#include "string.h"
+#include "assert.h"
+
+char fen_string[200];
+int fen_idx = 0;
+
+static void fen_append(char val)
+{
+    assert(fen_idx < (int)sizeof(fen_string));
+    fen_string[fen_idx] = val;
+    fen_idx++;
+}
+
+char * fen_string_get_state(void)
+{
+    memset(fen_string, (int)' ', sizeof(fen_string));
+    fen_idx = 0;
+    Game_State_t * state = Board_get_game_state();
+    for (int row = 0; row < 8; row++)
+    {
+        int consec_empty = 0;
+        for (int column = 0; column < 8; column++)
+        {
+            if((state->board_pieces[row * 8 + column] == SQUARE_EMPTY))
+            {
+                consec_empty++;
+                if (column == 7) {
+                    fen_append((char)('0' + consec_empty));
+                }
+            }
+            else
+            {
+                char ret_val;
+                if (consec_empty != 0)
+                {
+                    fen_append((char)('0' + consec_empty));
+                    consec_empty = 0;
+                }
+                switch (state->board_pieces[row * 8 + column])
+                {
+                    case PAWN_WHITE:
+                        fen_append('P');
+                        break;
+                    case PAWN_BLACK:
+                        fen_append('p');
+                        break;
+                    case KING_WHITE:
+                        fen_append('K');
+                        break;
+                    case KING_BLACK:
+                        fen_append('k');
+                        break;
+                    case ROOK_WHITE:
+                        fen_append('R');
+                        break;
+                    case ROOK_BLACK:
+                        fen_append('r');
+                        break;
+                    case KNIGHT_WHITE:
+                        fen_append('N');
+                        break;
+                    case KNIGHT_BLACK:
+                        fen_append('n');
+                        break;
+                    case BISHOP_WHITE:
+                        fen_append('B');
+                        break;
+                    case BISHOP_BLACK:
+                        fen_append('b');
+                        break;
+                    case QUEEN_WHITE:
+                        fen_append('Q');
+                        break;
+                    case QUEEN_BLACK:
+                        fen_append('q');
+                        break;
+                }
+            }
+        }
+        fen_append('/');
+    }
+    fen_append(' ');
+    if (state->player_turn) {
+        fen_append('w');
+    }
+    else{
+        fen_append('b');
+    }
+    fen_append(' ');
+    char options[2][2] = {{'K', 'Q'}, {'k', 'q'}};
+    bool castle = true;
+    for(int color = 0; color < 2; color++){
+        for(int k_q = 0; k_q < 2; k_q++){
+            if(state->castling_allowed[color][k_q])
+            {
+                castle = false;
+                fen_append(options[color][k_q]);
+            }
+        }
+    }
+    if (!castle) {
+        fen_append('-');
+    }
+
+
+    fen_append(' ');
+    fen_append('\0');
+    return fen_string;
+}

src/game_logic/fen_strings.h

@@ -0,0 +1,10 @@
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+char * fen_string_get_state(void);
+void fen_string_set_state(void);
+
+#ifdef __cplusplus
+}
+#endif

src/game_logic/game_state.c

@@ -327,9 +327,9 @@ void game_state_init(void)
     }
 }
 
-Game_State_t Board_get_game_state(void)
+Game_State_t * Board_get_game_state(void)
 {
-    return Game_State;
+    return &Game_State;
 }
 
 

src/game_logic/game_state.h

@@ -59,8 +59,7 @@ void game_state_init(void);
 void Board_Changed(uint8_t current_binary_board[8]);
 bool Set_Light(uint8_t piece, uint8_t row, uint8_t column, uint8_t state);
 void clear_board_state(void);
-void Board_get_lights_and_state(uint8_t * board_lights, uint8_t * board_state);
+Game_State_t * Board_get_game_state(void);
-Game_State_t Board_get_game_state(void);
 
 #ifdef __cplusplus
 }

src/game_logic/piece_logic/king.c

@@ -1,4 +1,5 @@
 #include "king.h"
+#include "game_state.h"
 #include "piece_logic.h"
 
 static uint8_t King_Locations[2u][2u] = {{7,4}, {0,4}};
@@ -32,6 +33,7 @@ bool Check_If_Move_Caused_Check(uint8_t piece, uint8_t row, uint8_t column, Game
 void Check_If_Moving_King(uint8_t row, uint8_t column, Game_State_t * game_state)
 {
     uint8_t white_black_idx = game_state->player_turn ? 0u : 1u;
+    uint8_t inverse_idx = game_state->player_turn ? 1u : 0u;
     if((game_state->selected_peice == KING_WHITE) || (game_state->selected_peice == KING_BLACK))
     {
         King_Locations[white_black_idx][0u] = row;
@@ -40,17 +42,13 @@ void Check_If_Moving_King(uint8_t row, uint8_t column, Game_State_t * game_state
         game_state->castling_allowed[white_black_idx][1u] = false;
     }
     // Disable the castling of the corresponding side if the rook is being moved.
-    else if (((game_state->selected_peice == ROOK_WHITE) && (row == 7u))
+    if (game_state->board_pieces[inverse_idx*7*8+7] == SQUARE_EMPTY)
-        || ((game_state->selected_peice == ROOK_BLACK) && (row == 0u)))
-    {
-        if (column == 0u)
     {
         game_state->castling_allowed[white_black_idx][0u] = false;
     }
-        else if (column == 7u)
+    if (game_state->board_pieces[inverse_idx*8*7+0] == SQUARE_EMPTY)
     {
         game_state->castling_allowed[white_black_idx][1u] = false;
     }
-    }
 }
 

src/game_logic/piece_logic/piece_logic.c

@@ -490,7 +490,7 @@ bool Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row, Game_State
             if (square_is_safe(row, column, game_state))
             {
                 // Queen side castle
-                if(game_state->castling_allowed[white_black_idx][0u] && (game_state->board_pieces[kings_row*8+1u] == SQUARE_EMPTY)
+                if(game_state->castling_allowed[white_black_idx][1u] && (game_state->board_pieces[kings_row*8+1u] == SQUARE_EMPTY)
                 && (game_state->board_pieces[kings_row*8+2u] == SQUARE_EMPTY) && (game_state->board_pieces[kings_row*8+3u]) == SQUARE_EMPTY)
                 {
                     //First Check to see if the king will pass through check
@@ -503,7 +503,7 @@ bool Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row, Game_State
                 }
 
                 // King side castle
-                if (game_state->castling_allowed[white_black_idx][1u] && (game_state->board_pieces[kings_row*8+5u] == SQUARE_EMPTY) && (game_state->board_pieces[kings_row*8+6u] == SQUARE_EMPTY))
+                if (game_state->castling_allowed[white_black_idx][0u] && (game_state->board_pieces[kings_row*8+5u] == SQUARE_EMPTY) && (game_state->board_pieces[kings_row*8+6u] == SQUARE_EMPTY))
                 {
                     //First Check to see if the king will pass through check
                     if(square_is_safe(kings_row, 5u, game_state) && square_is_safe(kings_row, 6u, game_state))

src/pc_app/game.cpp

@@ -1,3 +1,4 @@
+#include <SDL_log.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <iostream>
@@ -7,6 +8,7 @@
 #include <SDL2/SDL_video.h>
 #include <time.h>
 #include "game_state.h"
+#include "fen_strings.h"
 #include "user_interface_abstraction.h"
 
 static clock_t start_time, end_time;
@@ -50,6 +52,8 @@ int begin_game(SDL_Renderer *renderer, SDL_Window *win)
 
                         end_time = clock();
                         clock_t t = end_time - start_time;
+                        char * fen = fen_string_get_state();
+                        SDL_Log(fen);
                         SDL_Log("No. of clicks %ld clicks (%f seconds) to process the incoming click.\n", t, ((float)t) / CLOCKS_PER_SEC);
                 }
                 else

src/pc_app/user_interface_abstraction.cpp

@@ -28,10 +28,10 @@ static uint8_t Current_Binary_Board[8] = {0};
  * clearly indicating which player won.
  *
  * @param p_renderer Sdl Renderer
- * @param board_state board state
+ * @param game_state->board_pieces board state
  * @param game_state games state
  */
-static void ui_draw_end_game(SDL_Renderer *p_renderer, uint8_t * board_state, Game_State_t game_state)
+static void ui_draw_end_game(SDL_Renderer *p_renderer, Game_State_t * game_state)
 {
     SDL_SetRenderTarget(p_renderer, Board_Texture);
     SDL_SetRenderDrawColor(p_renderer, 0x7f, 0x7f, 0x7f, 0);
@@ -50,8 +50,8 @@ static void ui_draw_end_game(SDL_Renderer *p_renderer, uint8_t * board_state, Ga
     Rectangle.h = square_size;
     uint8_t white_color[4] = {0xFF, 0xFF, 0x00, 0x00};
     uint8_t black_color[4] = {0xFF, 0xFF, 0x00, 0x00};
-    if (!game_state.error_detected){
+    if (!game_state->error_detected){
-        if(game_state.player_turn)
+        if(game_state->player_turn)
         {
             white_color[0] = 0x00; white_color[1] = 0xFF; white_color[2] = 0x00; white_color[3] = 0x00;
             black_color[0] = 0xFF; black_color[1] = 0x00; black_color[2] = 0x00; black_color[3] = 0x00;
@@ -69,10 +69,10 @@ static void ui_draw_end_game(SDL_Renderer *p_renderer, uint8_t * board_state, Ga
         Rectangle.x = starting_x;
         for (size_t i = 0; i < 8; i++)
         {
-            if((board_state[j*8+i] & 0x0Fu) != SQUARE_EMPTY)
+            if((game_state->board_pieces[j*8+i] & 0x0Fu) != SQUARE_EMPTY)
             {
                 uint8_t * render_color;
-                if((board_state[j*8+i] % 2u) == 0u )
+                if((game_state->board_pieces[j*8+i] % 2u) == 0u )
                 {
                     render_color = white_color;
                 }
@@ -83,7 +83,7 @@ static void ui_draw_end_game(SDL_Renderer *p_renderer, uint8_t * board_state, Ga
                 SDL_SetRenderDrawColor(p_renderer, render_color[0], render_color[1], render_color[2], render_color[3]);
                 SDL_RenderFillRect(p_renderer, &Rectangle);
                 SDL_SetRenderDrawColor(p_renderer, 0x85, 0x5E, 0x42, 0x00);
-                SDL_RenderCopy(p_renderer, bitmapTextures[(board_state[j*8+i] & 0x0Fu)], NULL, &Rectangle);
+                SDL_RenderCopy(p_renderer, bitmapTextures[(game_state->board_pieces[j*8+i] & 0x0Fu)], NULL, &Rectangle);
             }
             else if (((i % 2) + (j % 2))  == 1)
             {
@@ -109,7 +109,7 @@ static void ui_draw_end_game(SDL_Renderer *p_renderer, uint8_t * board_state, Ga
  * @param  *p_renderer pointer to the renderer object:
  * @retval None
  */
-static void ui_draw_board(SDL_Renderer *p_renderer, uint8_t * board_lights, uint8_t * board_state)
+static void ui_draw_board(SDL_Renderer *p_renderer, Game_State_t * game_state)
 {
     SDL_SetRenderTarget(p_renderer, Board_Texture);
     SDL_SetRenderDrawColor(p_renderer, 0x7f, 0x7f, 0x7f, 0);
@@ -131,31 +131,31 @@ static void ui_draw_board(SDL_Renderer *p_renderer, uint8_t * board_lights, uint
         Rectangle.x = starting_x;
         for (size_t i = 0; i < 8; i++)
         {
-            if ((board_lights[j*8+i] == POTENTIAL_MOVE) || (board_lights[j*8+i] == POTENTIAL_CASTLE))
+            if ((game_state->board_state[j*8+i] == POTENTIAL_MOVE) || (game_state->board_state[j*8+i] == POTENTIAL_CASTLE))
             {
                 SDL_SetRenderDrawColor(p_renderer, 0x00, 0xFF, 0x00, 0x00);
                 SDL_RenderFillRect(p_renderer, &Rectangle);
                 SDL_SetRenderDrawColor(p_renderer, 0x85, 0x5E, 0x42, 0x00);
             }
-            else if ((board_lights[j*8+i] == POTENTIAL_TAKE) || (board_lights[j*8+i] == PIECE_NEEDS_TO_BE_HERE) || (board_lights[j*8+i] == PIECE_NEEDS_TO_BE_REMOVED))
+            else if ((game_state->board_state[j*8+i] == POTENTIAL_TAKE) || (game_state->board_state[j*8+i] == PIECE_NEEDS_TO_BE_HERE) || (game_state->board_state[j*8+i] == PIECE_NEEDS_TO_BE_REMOVED))
             {
                 SDL_SetRenderDrawColor(p_renderer, 0xFF, 0x00, 0x00, 0x00);
                 SDL_RenderFillRect(p_renderer, &Rectangle);
                 SDL_SetRenderDrawColor(p_renderer, 0x85, 0x5E, 0x42, 0x00);
             }
-            else if (board_lights[j*8+i] == PIECE_ORIGIN)
+            else if (game_state->board_state[j*8+i] == PIECE_ORIGIN)
             {
                 SDL_SetRenderDrawColor(p_renderer, 0xFF, 0x00, 0xFF, 0x00);
                 SDL_RenderFillRect(p_renderer, &Rectangle);
                 SDL_SetRenderDrawColor(p_renderer, 0x85, 0x5E, 0x42, 0x00);
             }
-            else if (board_lights[j*8+i] == ERROR_MOVE)
+            else if (game_state->board_state[j*8+i] == ERROR_MOVE)
             {
                 SDL_SetRenderDrawColor(p_renderer, 0xFF, 0xFF, 0x00, 0x00);
                 SDL_RenderFillRect(p_renderer, &Rectangle);
                 SDL_SetRenderDrawColor(p_renderer, 0x85, 0x5E, 0x42, 0x00);
             }
-            else if (board_lights[j*8+i] == CONVERTING_PAWN)
+            else if (game_state->board_state[j*8+i] == CONVERTING_PAWN)
             {
                 SDL_SetRenderDrawColor(p_renderer, 0xFF, 0x3B, 0x7A, 0x57);
                 SDL_RenderFillRect(p_renderer, &Rectangle);
@@ -170,9 +170,9 @@ static void ui_draw_board(SDL_Renderer *p_renderer, uint8_t * board_lights, uint
                 /* code */
             }
 
-            if((board_state[j*8+i] & 0x0Fu) != SQUARE_EMPTY)
+            if((game_state->board_pieces[j*8+i] & 0x0Fu) != SQUARE_EMPTY)
             {
-                SDL_RenderCopy(p_renderer, bitmapTextures[(board_state[j*8+i] & 0x0Fu)], NULL, &Rectangle);
+                SDL_RenderCopy(p_renderer, bitmapTextures[(game_state->board_pieces[j*8+i] & 0x0Fu)], NULL, &Rectangle);
             }
 
             Rectangle.x += square_size;
@@ -191,13 +191,13 @@ static void ui_draw_board(SDL_Renderer *p_renderer, uint8_t * board_lights, uint
         Rectangle.y = starting_y;
         for (size_t i = 0; i < 8; i++)
         {
-            if (board_lights[j*8+i] == PIECE_NEEDS_TO_BE_HERE)
+            if (game_state->board_state[j*8+i] == PIECE_NEEDS_TO_BE_HERE)
             {
                 SDL_SetRenderDrawColor(p_renderer, 0xFF, 0x00, 0x00, 0x00);
                 SDL_RenderFillRect(p_renderer, &Rectangle);
                 SDL_SetRenderDrawColor(p_renderer, 0x6F, 0x6F, 0x6F, 0x00);
             }
-            else if (board_lights[j*8+i] == ERROR_MOVE)
+            else if (game_state->board_state[j*8+i] == ERROR_MOVE)
             {
                 SDL_SetRenderDrawColor(p_renderer, 0xFF, 0xFF, 0x00, 0x00);
                 SDL_RenderFillRect(p_renderer, &Rectangle);
@@ -210,9 +210,9 @@ static void ui_draw_board(SDL_Renderer *p_renderer, uint8_t * board_lights, uint
 
 
 
-            if ((board_state[j*8+i] & 0x0Fu) != SQUARE_EMPTY)
+            if ((game_state->board_pieces[j*8+i] & 0x0Fu) != SQUARE_EMPTY)
             {
-                SDL_RenderCopy(p_renderer, bitmapTextures[(board_state[j*8+i] & 0x0Fu)], NULL, &Rectangle);
+                SDL_RenderCopy(p_renderer, bitmapTextures[(game_state->board_pieces[j*8+i] & 0x0Fu)], NULL, &Rectangle);
             }
 
 
@@ -236,17 +236,14 @@ static void ui_draw_board(SDL_Renderer *p_renderer, uint8_t * board_lights, uint
 
 void ui_redraw_board(SDL_Renderer *p_renderer)
 {
-    uint8_t board_lights[8*8];
+    Game_State_t * game_state = Board_get_game_state();
-    uint8_t board_state[8*8];
+    if(game_state->game_over)
-    Game_State_t game_state = Board_get_game_state();
-    Board_get_lights_and_state(board_lights, board_state);
-    if(game_state.game_over)
     {
-        ui_draw_end_game(p_renderer, board_state, game_state);
+        ui_draw_end_game(p_renderer, game_state);
     }
     else
     {
-        ui_draw_board(p_renderer, board_lights, board_state);
+        ui_draw_board(p_renderer, game_state);
     }
 
 }