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Refactoring the Game State

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This commit is contained in:
Daniel Weber 2024-09-14 15:41:15 -04:00
parent 9c31cc66e7
commit ec04c82d9b
4 changed files with 314 additions and 296 deletions
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1
.gitignore vendored
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@ -1,3 +1,4 @@
build/ build/
.rscons* .rscons*
.vscode/ .vscode/
compile_commands.json

321
src/game_logic/chess_board.cpp
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@ -3,13 +3,11 @@
#include <string.h> #include <string.h>
static uint8_t Board_Pieces[8][8] = {{0}};
static uint8_t Board_State[8][8] = {{0}};
static uint8_t Saved_Binary_Board[8] = {0}; static uint8_t Saved_Binary_Board[8] = {0};
static uint8_t Board_Lights[8][8] = {{0}}; static uint8_t Board_States[8][8] = {{0}};
static uint8_t Game_State = GAME_STATE_P1_TURN_BEGINING; static Game_State_t Game_State;
static uint8_t Last_Game_State = GAME_STATE_P1_TURN_BEGINING; static Game_State_t Last_Game_State;
static bool White_Turn = true;
static uint8_t Selected_Piece = SQUARE_EMPTY; static uint8_t Selected_Piece = SQUARE_EMPTY;
static uint8_t Error_Count = 0u; static uint8_t Error_Count = 0u;
static uint8_t Taken_Piece = SQUARE_EMPTY; static uint8_t Taken_Piece = SQUARE_EMPTY;
@ -28,15 +26,15 @@ static uint8_t Pawn_Converted_To = QUEEN_WHITE;
* @brief Function for clearing all of the lights on the board. Except for error moves. * @brief Function for clearing all of the lights on the board. Except for error moves.
* @retval None * @retval None
*/ */
static void clear_lights(void) static void clear_board_state(void)
{ {
for (size_t i = 0; i < 8; i++) for (size_t i = 0; i < 8; i++)
{ {
for (size_t j = 0; j < 8; j++) for (size_t j = 0; j < 8; j++)
{ {
if(Board_Lights[i][j] != ERROR_MOVE) if(Board_States[i][j] != ERROR_MOVE)
{ {
Board_Lights[i][j] = LIGHT_OFF; Board_States[i][j] = LIGHT_OFF;
} }
} }
} }
@ -73,15 +71,15 @@ static bool opposite_teams(uint8_t piece_one, uint8_t piece_two)
*/ */
bool square_is_safe(uint8_t row, uint8_t column) bool square_is_safe(uint8_t row, uint8_t column)
{ {
int8_t temp = row + (White_Turn ? -1 : 1); int8_t temp = row + (Game_State.player_turn ? -1 : 1);
/* first check if pawns can take us */ /* first check if pawns can take us */
if ((column > 0) && ((White_Turn ? PAWN_BLACK : PAWN_WHITE) == Board_State[temp][column - 1u])) if ((column > 0) && ((Game_State.player_turn ? PAWN_BLACK : PAWN_WHITE) == Board_Pieces[temp][column - 1u]))
{ {
//can be eaten by a pawn, not safe. //can be eaten by a pawn, not safe.
return false; return false;
} }
if ((column < 7) && ((White_Turn ? PAWN_BLACK : PAWN_WHITE) == Board_State[temp][column + 1u])) if ((column < 7) && ((Game_State.player_turn ? PAWN_BLACK : PAWN_WHITE) == Board_Pieces[temp][column + 1u]))
{ {
//can be eaten by a pawn, not safe. //can be eaten by a pawn, not safe.
return false; return false;
@ -98,7 +96,7 @@ bool square_is_safe(uint8_t row, uint8_t column)
{ {
int8_t x = row + left_right; int8_t x = row + left_right;
int8_t y = column + up_down; int8_t y = column + up_down;
if ((White_Turn ? KING_BLACK : KING_WHITE) == Board_State[x][y]) if ((Game_State.player_turn ? KING_BLACK : KING_WHITE) == Board_Pieces[x][y])
{ {
return false; return false;
} }
@ -141,11 +139,11 @@ bool square_is_safe(uint8_t row, uint8_t column)
{ {
loop = false; loop = false;
} }
else if (Board_State[x][y] == SQUARE_EMPTY) else if (Board_Pieces[x][y] == SQUARE_EMPTY)
{ {
/* Do nothing */ /* Do nothing */
} }
else if (((White_Turn ? ROOK_BLACK : ROOK_WHITE) == Board_State[x][y]) || ((White_Turn ? QUEEN_BLACK : QUEEN_WHITE) == Board_State[x][y])) else if (((Game_State.player_turn ? ROOK_BLACK : ROOK_WHITE) == Board_Pieces[x][y]) || ((Game_State.player_turn ? QUEEN_BLACK : QUEEN_WHITE) == Board_Pieces[x][y]))
{ {
return false; return false;
} }
@ -185,19 +183,19 @@ bool square_is_safe(uint8_t row, uint8_t column)
int8_t y = column; int8_t y = column;
while (loop) while (loop)
{ {
uint8_t bish = (White_Turn ? BISHOP_BLACK : BISHOP_WHITE); uint8_t bish = (Game_State.player_turn ? BISHOP_BLACK : BISHOP_WHITE);
uint8_t queen = (White_Turn ? QUEEN_BLACK : QUEEN_WHITE); uint8_t queen = (Game_State.player_turn ? QUEEN_BLACK : QUEEN_WHITE);
x += left_right_step; x += left_right_step;
y += up_down_step; y += up_down_step;
if ((x < 0) || (y < 0) || (x >= 8) || (y >= 8)) if ((x < 0) || (y < 0) || (x >= 8) || (y >= 8))
{ {
loop = false; loop = false;
} }
else if (Board_State[x][y] == SQUARE_EMPTY) else if (Board_Pieces[x][y] == SQUARE_EMPTY)
{ {
/* do nothing */ /* do nothing */
} }
else if ((bish == Board_State[x][y]) || (queen == Board_State[x][y])) else if ((bish == Board_Pieces[x][y]) || (queen == Board_Pieces[x][y]))
{ {
return false; return false;
} }
@ -248,7 +246,7 @@ bool square_is_safe(uint8_t row, uint8_t column)
int8_t y = (int8_t)column + up_down_step; int8_t y = (int8_t)column + up_down_step;
if ((x >= 0) && (y >= 0) && (x < 8) && (y < 8)) if ((x >= 0) && (y >= 0) && (x < 8) && (y < 8))
{ {
if ((White_Turn ? KNIGHT_BLACK : KNIGHT_WHITE) == Board_State[x][y]) if ((Game_State.player_turn ? KNIGHT_BLACK : KNIGHT_WHITE) == Board_Pieces[x][y])
{ {
return false; return false;
} }
@ -261,23 +259,23 @@ bool square_is_safe(uint8_t row, uint8_t column)
bool Check_If_Move_Caused_Check(uint8_t piece, uint8_t row, uint8_t column) bool Check_If_Move_Caused_Check(uint8_t piece, uint8_t row, uint8_t column)
{ {
bool ret_val; bool ret_val;
uint8_t store_current_piece = Board_State[row][column]; uint8_t store_current_piece = Board_Pieces[row][column];
Board_State[row][column] = piece; Board_Pieces[row][column] = piece;
//If its the white's turn we want to see if the white king is still safe. //If its the white's turn we want to see if the white king is still safe.
uint8_t white_black_idx = White_Turn ? 0u : 1u; uint8_t white_black_idx = Game_State.player_turn ? 0u : 1u;
ret_val = !square_is_safe(King_Locations[white_black_idx][0u], King_Locations[white_black_idx][1u]); ret_val = !square_is_safe(King_Locations[white_black_idx][0u], King_Locations[white_black_idx][1u]);
Board_State[row][column] = store_current_piece; Board_Pieces[row][column] = store_current_piece;
return ret_val; return ret_val;
} }
void Check_If_Could_Cause_Check(uint8_t row, uint8_t column) void Check_If_Could_Cause_Check(uint8_t row, uint8_t column)
{ {
uint8_t temp_storage = Board_State[row][column]; uint8_t temp_storage = Board_Pieces[row][column];
Board_State[row][column] = SQUARE_EMPTY; Board_Pieces[row][column] = SQUARE_EMPTY;
//If its the white's turn we want to see if the white king is still safe. //If its the white's turn we want to see if the white king is still safe.
uint8_t white_black_idx = White_Turn ? 0u : 1u; uint8_t white_black_idx = Game_State.player_turn ? 0u : 1u;
High_Alert = !square_is_safe(King_Locations[white_black_idx][0u], King_Locations[white_black_idx][1u]); High_Alert = !square_is_safe(King_Locations[white_black_idx][0u], King_Locations[white_black_idx][1u]);
Board_State[row][column] = temp_storage; Board_Pieces[row][column] = temp_storage;
} }
static bool Set_Light(uint8_t piece, uint8_t row, uint8_t column, uint8_t state) static bool Set_Light(uint8_t piece, uint8_t row, uint8_t column, uint8_t state)
@ -285,7 +283,7 @@ static bool Set_Light(uint8_t piece, uint8_t row, uint8_t column, uint8_t state)
bool ret_val = false; bool ret_val = false;
if (!Check_If_Move_Caused_Check(piece, row, column)) if (!Check_If_Move_Caused_Check(piece, row, column))
{ {
Board_Lights[row][column] = state; Board_States[row][column] = state;
ret_val = true; ret_val = true;
} }
return ret_val; return ret_val;
@ -300,7 +298,7 @@ static bool Set_Light(uint8_t piece, uint8_t row, uint8_t column, uint8_t state)
static bool pawn_move(uint8_t piece, uint8_t row, uint8_t column) static bool pawn_move(uint8_t piece, uint8_t row, uint8_t column)
{ {
bool ret_val = false; bool ret_val = false;
if (Board_State[row][column] == SQUARE_EMPTY) if (Board_Pieces[row][column] == SQUARE_EMPTY)
{ {
ret_val = Set_Light(piece, row, column, POTENTIAL_MOVE); ret_val = Set_Light(piece, row, column, POTENTIAL_MOVE);
} }
@ -331,11 +329,11 @@ static bool cast_a_ray(uint8_t piece, int8_t direction_r, int8_t direction_c, ui
{ {
loop = false; loop = false;
} }
else if (Board_State[x][y] == SQUARE_EMPTY) else if (Board_Pieces[x][y] == SQUARE_EMPTY)
{ {
ret_val = Set_Light(piece, x, y, POTENTIAL_MOVE) || ret_val; ret_val = Set_Light(piece, x, y, POTENTIAL_MOVE) || ret_val;
} }
else if (opposite_teams(piece, Board_State[x][y])) else if (opposite_teams(piece, Board_Pieces[x][y]))
{ {
ret_val = Set_Light(piece, x, y, POTENTIAL_TAKE) || ret_val; ret_val = Set_Light(piece, x, y, POTENTIAL_TAKE) || ret_val;
/* once we take a piece we can no longer take anymore */ /* once we take a piece we can no longer take anymore */
@ -358,7 +356,7 @@ static bool cast_a_ray(uint8_t piece, int8_t direction_r, int8_t direction_c, ui
static bool pawn_take(uint8_t piece, uint8_t row, uint8_t column) static bool pawn_take(uint8_t piece, uint8_t row, uint8_t column)
{ {
bool ret_val = false; bool ret_val = false;
if ((Board_State[row][column] < SQUARE_EMPTY) && opposite_teams(piece, Board_State[row][column])) if ((Board_Pieces[row][column] < SQUARE_EMPTY) && opposite_teams(piece, Board_Pieces[row][column]))
{ {
ret_val = Set_Light(piece, row, column, POTENTIAL_TAKE); ret_val = Set_Light(piece, row, column, POTENTIAL_TAKE);
} }
@ -384,7 +382,7 @@ static bool Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
uint8_t temp_row = row + direction; uint8_t temp_row = row + direction;
if (row == (white_team(piece) ? 6u : 1u)) if (row == (white_team(piece) ? 6u : 1u))
{ {
if(Board_State[temp_row][column] == SQUARE_EMPTY) if(Board_Pieces[temp_row][column] == SQUARE_EMPTY)
{ {
ret_val = pawn_move(piece, row + (direction * 2u), column) || ret_val; ret_val = pawn_move(piece, row + (direction * 2u), column) || ret_val;
} }
@ -477,11 +475,11 @@ static bool Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
int8_t y = (int8_t)column + up_down_step; int8_t y = (int8_t)column + up_down_step;
if ((x >= 0) && (y >= 0) && (x < 8) && (y < 8)) if ((x >= 0) && (y >= 0) && (x < 8) && (y < 8))
{ {
if (Board_State[x][y] == SQUARE_EMPTY) if (Board_Pieces[x][y] == SQUARE_EMPTY)
{ {
ret_val = Set_Light(piece, x, y, POTENTIAL_MOVE) || ret_val; ret_val = Set_Light(piece, x, y, POTENTIAL_MOVE) || ret_val;
} }
else if (opposite_teams(piece, Board_State[x][y])) else if (opposite_teams(piece, Board_Pieces[x][y]))
{ {
ret_val = Set_Light(piece, x, y, POTENTIAL_TAKE) || ret_val; ret_val = Set_Light(piece, x, y, POTENTIAL_TAKE) || ret_val;
} }
@ -545,14 +543,14 @@ static bool Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
int8_t y = column + up_down; int8_t y = column + up_down;
if (square_is_safe(x, y)) if (square_is_safe(x, y))
{ {
if (Board_State[x][y] == SQUARE_EMPTY) if (Board_Pieces[x][y] == SQUARE_EMPTY)
{ {
Board_Lights[x][y] = POTENTIAL_MOVE; Board_States[x][y] = POTENTIAL_MOVE;
ret_val = true; ret_val = true;
} }
else if (opposite_teams(piece, Board_State[x][y])) else if (opposite_teams(piece, Board_Pieces[x][y]))
{ {
Board_Lights[x][y] = POTENTIAL_TAKE; Board_States[x][y] = POTENTIAL_TAKE;
ret_val = true; ret_val = true;
} }
} }
@ -565,26 +563,26 @@ static bool Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
if (square_is_safe(row, column)) if (square_is_safe(row, column))
{ {
// Queen side castle // Queen side castle
if(Castling_Allowed[white_black_idx][0u] && (Board_State[kings_row][1u] == SQUARE_EMPTY) if(Castling_Allowed[white_black_idx][0u] && (Board_Pieces[kings_row][1u] == SQUARE_EMPTY)
&& (Board_State[kings_row][2u] == SQUARE_EMPTY) && (Board_State[kings_row][3u]) == SQUARE_EMPTY) && (Board_Pieces[kings_row][2u] == SQUARE_EMPTY) && (Board_Pieces[kings_row][3u]) == SQUARE_EMPTY)
{ {
//First Check to see if the king will pass through check //First Check to see if the king will pass through check
if(square_is_safe(kings_row, 3u) && square_is_safe(kings_row, 2u)) if(square_is_safe(kings_row, 3u) && square_is_safe(kings_row, 2u))
{ {
// Yay we can castle queen side! // Yay we can castle queen side!
Board_Lights[kings_row][2u] = POTENTIAL_CASTLE; Board_States[kings_row][2u] = POTENTIAL_CASTLE;
ret_val = true; ret_val = true;
} }
} }
// King side castle // King side castle
if (Castling_Allowed[white_black_idx][1u] && (Board_State[kings_row][5u] == SQUARE_EMPTY) && (Board_State[kings_row][6u] == SQUARE_EMPTY)) if (Castling_Allowed[white_black_idx][1u] && (Board_Pieces[kings_row][5u] == SQUARE_EMPTY) && (Board_Pieces[kings_row][6u] == SQUARE_EMPTY))
{ {
//First Check to see if the king will pass through check //First Check to see if the king will pass through check
if(square_is_safe(kings_row, 5u) && square_is_safe(kings_row, 6u)) if(square_is_safe(kings_row, 5u) && square_is_safe(kings_row, 6u))
{ {
// Yay we can castle king side! // Yay we can castle king side!
Board_Lights[kings_row][6u] = POTENTIAL_CASTLE; Board_States[kings_row][6u] = POTENTIAL_CASTLE;
ret_val = true; ret_val = true;
} }
} }
@ -605,21 +603,21 @@ bool Check_If_Player_Can_Move(bool white)
{ {
for (uint8_t column = 0; column < 8u; column++) for (uint8_t column = 0; column < 8u; column++)
{ {
if((white_team(Board_State[row][column]) == white)) if((white_team(Board_Pieces[row][column]) == white))
{ {
// SDL_Log("move: Row:%d, Col:%d", row, column); // SDL_Log("move: Row:%d, Col:%d", row, column);
if(Mark_Potential_Moves(Board_State[row][column], column, row)) if(Mark_Potential_Moves(Board_Pieces[row][column], column, row))
{ {
// SDL_Log("Player Can still move: Row:%d, Col:%d", row, column); // SDL_Log("Player Can still move: Row:%d, Col:%d", row, column);
clear_lights(); clear_board_state();
return true; return true;
} }
} }
} }
} }
clear_lights(); clear_board_state();
// SDL_Log("Player cant move"); // SDL_Log("Player cant move");
return false; return false;
} }
@ -629,26 +627,21 @@ bool Check_If_Player_Can_Move(bool white)
*/ */
static void Switch_Turns(void) static void Switch_Turns(void)
{ {
Game_State = (White_Turn ? GAME_STATE_P2_TURN_BEGINING : GAME_STATE_P1_TURN_BEGINING); Game_State.turn_state = BEGINNING;
White_Turn = !White_Turn; Game_State.player_turn = !Game_State.player_turn;
// Square is safe assumes the other team is trying to attack the square so for example at the end of // Square is safe assumes the other team is trying to attack the square so for example at the end of
// White's turn we want to see if the black king is now in check, so we will switch teams and then // White's turn we want to see if the black king is now in check, so we will switch teams and then
// Check if the current kings locations is safe. If it is safe then check is false, if it isnt safe then check is true. // Check if the current kings locations is safe. If it is safe then check is false, if it isnt safe then check is true.
uint8_t white_black_idx = White_Turn ? 0u : 1u; uint8_t white_black_idx = Game_State.player_turn ? 0u : 1u;
Check[white_black_idx] = !square_is_safe(King_Locations[white_black_idx][0u], King_Locations[white_black_idx][1u]); Check[white_black_idx] = !square_is_safe(King_Locations[white_black_idx][0u], King_Locations[white_black_idx][1u]);
//Last thing we need to check before sitching turns is to check if the game is over. //Last thing we need to check before switching turns is to check if the game is over.
bool player_can_play = Check_If_Player_Can_Move(White_Turn); bool player_can_play = Check_If_Player_Can_Move(Game_State.player_turn);
if(!player_can_play) if(!player_can_play)
{ {
if(Check[white_black_idx]) Game_State.game_over = true;
{ Game_State.player_turn = !Game_State.player_turn;
Game_State = White_Turn ? GAME_STATE_OVER_BLACK_WIN : GAME_STATE_OVER_WHITE_WIN; Game_State.error_detected = !Check[white_black_idx];
}
else
{
Game_State = GAME_STATE_OVER_STALE_MATE;
}
} }
} }
@ -662,7 +655,7 @@ static void Switch_Turns(void)
*/ */
static void Check_If_Moving_King(uint8_t row, uint8_t column) static void Check_If_Moving_King(uint8_t row, uint8_t column)
{ {
uint8_t white_black_idx = White_Turn ? 0u : 1u; uint8_t white_black_idx = Game_State.player_turn ? 0u : 1u;
if((Selected_Piece == KING_WHITE) || (Selected_Piece == KING_BLACK)) if((Selected_Piece == KING_WHITE) || (Selected_Piece == KING_BLACK))
{ {
King_Locations[white_black_idx][0u] = row; King_Locations[white_black_idx][0u] = row;
@ -687,14 +680,14 @@ static void Check_If_Moving_King(uint8_t row, uint8_t column)
static void Check_If_Converting_Pawn(uint8_t row, uint8_t column) static void Check_If_Converting_Pawn(uint8_t row, uint8_t column)
{ {
uint8_t white_black_idx = White_Turn ? 0u : 1u; uint8_t white_black_idx = Game_State.player_turn ? 0u : 1u;
Converting_Pawn = false; Converting_Pawn = false;
if((Selected_Piece == PAWN_WHITE) || (Selected_Piece == PAWN_BLACK)) if((Selected_Piece == PAWN_WHITE) || (Selected_Piece == PAWN_BLACK))
{ {
if((row == 0u) || (row == 7u)) if((row == 0u) || (row == 7u))
{ {
Selected_Piece = White_Turn ? QUEEN_WHITE : QUEEN_BLACK; Selected_Piece = Game_State.player_turn ? QUEEN_WHITE : QUEEN_BLACK;
Pawn_Converted_To = Selected_Piece; Pawn_Converted_To = Selected_Piece;
Converting_Pawn = true; Converting_Pawn = true;
Converting_Pawn_Row_Col[0] = row; Converting_Pawn_Row_Col[0] = row;
@ -712,16 +705,16 @@ static bool Converting_Pawn_If_Applicable(uint8_t row, uint8_t column)
(Converting_Pawn_Row_Col[1] == column)) (Converting_Pawn_Row_Col[1] == column))
{ {
//Putting the piece down on the board //Putting the piece down on the board
if(Board_State[row][column] == SQUARE_EMPTY) if(Board_Pieces[row][column] == SQUARE_EMPTY)
{ {
Board_State[row][column] = Pawn_Converted_To; Board_Pieces[row][column] = Pawn_Converted_To;
Board_Lights[row][column] = LIGHT_OFF; Board_States[row][column] = LIGHT_OFF;
} }
//Picking the piece back up to toggle through the options //Picking the piece back up to toggle through the options
else else
{ {
Board_State[row][column] = SQUARE_EMPTY; Board_Pieces[row][column] = SQUARE_EMPTY;
Board_Lights[row][column] = CONVERTING_PAWN; Board_States[row][column] = CONVERTING_PAWN;
Pawn_Converted_To = Pawn_Converted_To - 2; Pawn_Converted_To = Pawn_Converted_To - 2;
if (Pawn_Converted_To < ROOK_WHITE) if (Pawn_Converted_To < ROOK_WHITE)
{ {
@ -746,91 +739,86 @@ static bool Converting_Pawn_If_Applicable(uint8_t row, uint8_t column)
*/ */
static void Board_Square_Was_Toggled(uint8_t j, uint8_t i) static void Board_Square_Was_Toggled(uint8_t j, uint8_t i)
{ {
switch (Game_State) if (Game_State.error_detected)
{ {
/* Something unexpected happened, game cannot progress until the board is returned to the known state */ if (Board_States[j][i] == PIECE_ORIGIN)
case GAME_STATE_ERROR_DETECTED:
{ {
if (Board_Lights[j][i] == PIECE_ORIGIN) Board_Pieces[j][i] = Selected_Piece;
{
Board_State[j][i] = Selected_Piece;
Selected_Piece = SQUARE_EMPTY; Selected_Piece = SQUARE_EMPTY;
clear_lights(); clear_board_state();
Last_Game_State--; Game_State.turn_state = BEGINNING;
} }
else if (Board_Lights[j][i] == PIECE_NEEDS_TO_BE_HERE) else if (Board_States[j][i] == PIECE_NEEDS_TO_BE_HERE)
{ {
if (j < 8u) if (j < 8u)
{ {
Board_State[j][i] = Selected_Piece; Board_Pieces[j][i] = Selected_Piece;
Selected_Piece = SQUARE_EMPTY; Selected_Piece = SQUARE_EMPTY;
Board_Lights[j][i] = LIGHT_OFF; Board_States[j][i] = LIGHT_OFF;
} }
else else
{ {
Board_State[j][i] = Taken_Piece; Board_Pieces[j][i] = Taken_Piece;
uint8_t board_column = (j / 2u) * 2u; uint8_t board_column = (j / 2u) * 2u;
if(Board_Lights[board_column][i] == PIECE_NEEDS_TO_BE_HERE) if(Board_States[board_column][i] == PIECE_NEEDS_TO_BE_HERE)
{ {
Board_Lights[board_column][i] = LIGHT_OFF; Board_States[board_column][i] = LIGHT_OFF;
} }
if(Board_Lights[board_column + 1u][i] == PIECE_NEEDS_TO_BE_HERE) if(Board_States[board_column + 1u][i] == PIECE_NEEDS_TO_BE_HERE)
{ {
Board_Lights[board_column + 1u][i] = LIGHT_OFF; Board_States[board_column + 1u][i] = LIGHT_OFF;
} }
Taken_Piece = SQUARE_EMPTY; Taken_Piece = SQUARE_EMPTY;
} }
if ((Selected_Piece == SQUARE_EMPTY) && (Taken_Piece == SQUARE_EMPTY)) if ((Selected_Piece == SQUARE_EMPTY) && (Taken_Piece == SQUARE_EMPTY))
{ {
Last_Game_State = (White_Turn ? GAME_STATE_P2_TURN_BEGINING : GAME_STATE_P1_TURN_BEGINING); Game_State.turn_state = BEGINNING;
White_Turn = !White_Turn; Game_State.player_turn = !Game_State.player_turn;
} }
} }
else if (Board_Lights[j][i] == ERROR_MOVE) else if (Board_States[j][i] == ERROR_MOVE)
{ {
Error_Count--; Error_Count--;
Board_Lights[j][i] = LIGHT_OFF; Board_States[j][i] = LIGHT_OFF;
/* All Errors have been rectified so we can go back to where we were.*/ /* All Errors have been rectified so we can go back to where we were.*/
if(Error_Count == 0u) if(Error_Count == 0u)
{ {
Game_State = Last_Game_State; Game_State.error_detected = false;
} }
} }
else else
{ {
Error_Count++; Error_Count++;
Board_Lights[j][i] = ERROR_MOVE; Board_States[j][i] = ERROR_MOVE;
} }
break;
} }
case GAME_STATE_IDLE: else
{
switch (Game_State.turn_state)
{ {
break;
}
/* We are waiting till the player who's turn it is picks up a piece that is on their team */ /* We are waiting till the player who's turn it is picks up a piece that is on their team */
case GAME_STATE_P2_TURN_BEGINING: case BEGINNING:
case GAME_STATE_P1_TURN_BEGINING:
{ {
if ((j < 8u) && (Board_State[j][i] != SQUARE_EMPTY) && (white_team(Board_State[j][i]) == White_Turn)) if ((j < 8u) && (Board_Pieces[j][i] != SQUARE_EMPTY) && (white_team(Board_Pieces[j][i]) == Game_State.player_turn))
{ {
if((Board_State[j][i] != KING_BLACK) && (Board_State[j][i] != KING_WHITE)) if((Board_Pieces[j][i] != KING_BLACK) && (Board_Pieces[j][i] != KING_WHITE))
{ {
Check_If_Could_Cause_Check(j, i); Check_If_Could_Cause_Check(j, i);
} }
Selected_Piece = Board_State[j][i]; Selected_Piece = Board_Pieces[j][i];
Board_State[j][i] = SQUARE_EMPTY; Board_Pieces[j][i] = SQUARE_EMPTY;
(void)Mark_Potential_Moves(Selected_Piece, i, j); (void)Mark_Potential_Moves(Selected_Piece, i, j);
Board_Lights[j][i] = PIECE_ORIGIN; Board_States[j][i] = PIECE_ORIGIN;
Game_State++; Game_State.turn_state = IN_PROGRESS;
} }
else else
{ {
if(!Converting_Pawn_If_Applicable(j, i)) if(!Converting_Pawn_If_Applicable(j, i))
{ {
Last_Game_State = Game_State; Game_State.error_detected = true;
Game_State = GAME_STATE_ERROR_DETECTED; Board_States[j][i] = ERROR_MOVE;
Board_Lights[j][i] = ERROR_MOVE;
Error_Count++; Error_Count++;
} }
} }
@ -838,48 +826,47 @@ static void Board_Square_Was_Toggled(uint8_t j, uint8_t i)
break; break;
} }
/* Person is in the middle of taking a turn for example they might already have a piece in the hand*/ /* Person is in the middle of taking a turn for example they might already have a piece in the hand*/
case GAME_STATE_P2_TURN_IN_PROGRESS: case IN_PROGRESS:
case GAME_STATE_P1_TURN_IN_PROGRESS:
{ {
if (Board_Lights[j][i] == POTENTIAL_MOVE) if (Board_States[j][i] == POTENTIAL_MOVE)
{ {
Check_If_Moving_King(j, i); Check_If_Moving_King(j, i);
Check_If_Converting_Pawn(j, i); Check_If_Converting_Pawn(j, i);
Board_State[j][i] = Selected_Piece; Board_Pieces[j][i] = Selected_Piece;
Selected_Piece = SQUARE_EMPTY; Selected_Piece = SQUARE_EMPTY;
clear_lights(); clear_board_state();
Switch_Turns(); Switch_Turns();
} }
else if (Board_Lights[j][i] == POTENTIAL_TAKE) else if (Board_States[j][i] == POTENTIAL_TAKE)
{ {
// Taken_Piece = Board_State[j][i]; // Taken_Piece = Board_State[j][i];
Board_State[j][i] = SQUARE_EMPTY; Board_Pieces[j][i] = SQUARE_EMPTY;
Game_State = (White_Turn ? GAME_STATE_P1_TURN_TAKING : GAME_STATE_P2_TURN_TAKING); Game_State.turn_state = FINALIZING;
clear_lights(); clear_board_state();
Board_Lights[j][i] = PIECE_NEEDS_TO_BE_HERE; Board_States[j][i] = PIECE_NEEDS_TO_BE_HERE;
} }
else if (Board_Lights[j][i] == PIECE_ORIGIN) else if (Board_States[j][i] == PIECE_ORIGIN)
{ {
Board_State[j][i] = Selected_Piece; Board_Pieces[j][i] = Selected_Piece;
Selected_Piece = SQUARE_EMPTY; Selected_Piece = SQUARE_EMPTY;
clear_lights(); clear_board_state();
Game_State--; Game_State.turn_state = BEGINNING;
} }
else if (Board_Lights[j][i] == POTENTIAL_CASTLE) else if (Board_States[j][i] == POTENTIAL_CASTLE)
{ {
Check_If_Moving_King(j, i); Check_If_Moving_King(j, i);
Board_State[j][i] = Selected_Piece; Board_Pieces[j][i] = Selected_Piece;
Selected_Piece = SQUARE_EMPTY; Selected_Piece = SQUARE_EMPTY;
clear_lights(); clear_board_state();
if(i == 2u) if(i == 2u)
{ {
Board_Lights[j][3u] = PIECE_NEEDS_TO_BE_HERE; Board_States[j][3u] = PIECE_NEEDS_TO_BE_HERE;
Board_Lights[j][0u] = PIECE_NEEDS_TO_BE_REMOVED; Board_States[j][0u] = PIECE_NEEDS_TO_BE_REMOVED;
} }
else if(i == 6u) else if(i == 6u)
{ {
Board_Lights[j][5u] = PIECE_NEEDS_TO_BE_HERE; Board_States[j][5u] = PIECE_NEEDS_TO_BE_HERE;
Board_Lights[j][7u] = PIECE_NEEDS_TO_BE_REMOVED; Board_States[j][7u] = PIECE_NEEDS_TO_BE_REMOVED;
} }
else else
{ {
@ -887,41 +874,38 @@ static void Board_Square_Was_Toggled(uint8_t j, uint8_t i)
} }
} }
else if (Board_Lights[j][i] == PIECE_NEEDS_TO_BE_REMOVED) else if (Board_States[j][i] == PIECE_NEEDS_TO_BE_REMOVED)
{ {
Selected_Piece = Board_State[j][i]; Selected_Piece = Board_Pieces[j][i];
Board_State[j][i] = SQUARE_EMPTY; Board_Pieces[j][i] = SQUARE_EMPTY;
Board_Lights[j][i] = LIGHT_OFF; Board_States[j][i] = LIGHT_OFF;
Game_State = (White_Turn ? GAME_STATE_P1_TURN_TAKING : GAME_STATE_P2_TURN_TAKING); Game_State.turn_state = FINALIZING;
} }
else else
{ {
Last_Game_State = Game_State; Game_State.error_detected = true;
Game_State = GAME_STATE_ERROR_DETECTED; Board_States[j][i] = ERROR_MOVE;
Board_Lights[j][i] = ERROR_MOVE;
Error_Count++; Error_Count++;
} }
break; break;
} }
/* Player still needs to do something to complete their turn, like complete castle, en pessant, or converting a pawn*/ /* Player still needs to do something to complete their turn, like complete castle, en pessant, or converting a pawn*/
case GAME_STATE_P2_TURN_TAKING: case FINALIZING:
case GAME_STATE_P1_TURN_TAKING:
{ {
if (Board_Lights[j][i] == PIECE_NEEDS_TO_BE_HERE) if (Board_States[j][i] == PIECE_NEEDS_TO_BE_HERE)
{ {
Check_If_Moving_King(j, i); Check_If_Moving_King(j, i);
Check_If_Converting_Pawn(j, i); Check_If_Converting_Pawn(j, i);
Board_State[j][i] = Selected_Piece; Board_Pieces[j][i] = Selected_Piece;
Selected_Piece = SQUARE_EMPTY; Selected_Piece = SQUARE_EMPTY;
Board_Lights[j][i] = LIGHT_OFF; Board_States[j][i] = LIGHT_OFF;
} }
else else
{ {
if(!Converting_Pawn_If_Applicable(j, i)) if(!Converting_Pawn_If_Applicable(j, i))
{ {
Last_Game_State = Game_State; Game_State.error_detected = true;
Game_State = GAME_STATE_ERROR_DETECTED; Board_States[j][i] = ERROR_MOVE;
Board_Lights[j][i] = ERROR_MOVE;
Error_Count++; Error_Count++;
} }
} }
@ -939,11 +923,12 @@ static void Board_Square_Was_Toggled(uint8_t j, uint8_t i)
} }
} }
} }
}
void Board_get_lights_and_state(uint8_t board_lights[8][8], uint8_t board_state[8][8]) void Board_get_lights_and_state(uint8_t board_state[8][8], uint8_t board_pieces[8][8])
{ {
memcpy(&board_lights[0][0], &Board_Lights[0][0], sizeof(Board_Lights)); memcpy(&board_state[0][0], &Board_States[0][0], sizeof(Board_States));
memcpy(&board_state[0][0], &Board_State[0][0], sizeof(Board_State)); memcpy(&board_pieces[0][0], &Board_Pieces[0][0], sizeof(Board_Pieces));
} }
@ -984,7 +969,7 @@ void chess_board_init(void)
{ {
for (uint8_t j = 0u; j < 8u; j++) for (uint8_t j = 0u; j < 8u; j++)
{ {
Board_State[i][j] = SQUARE_EMPTY; Board_Pieces[i][j] = SQUARE_EMPTY;
} }
} }
Saved_Binary_Board[0] = 0xFF; Saved_Binary_Board[0] = 0xFF;
@ -993,31 +978,31 @@ void chess_board_init(void)
Saved_Binary_Board[7] = 0xFF; Saved_Binary_Board[7] = 0xFF;
//Place black pieces //Place black pieces
Board_State[0][0] = ROOK_BLACK; Board_Pieces[0][0] = ROOK_BLACK;
Board_State[0][7] = ROOK_BLACK; Board_Pieces[0][7] = ROOK_BLACK;
Board_State[0][1] = KNIGHT_BLACK; Board_Pieces[0][1] = KNIGHT_BLACK;
Board_State[0][6] = KNIGHT_BLACK; Board_Pieces[0][6] = KNIGHT_BLACK;
Board_State[0][2] = BISHOP_BLACK; Board_Pieces[0][2] = BISHOP_BLACK;
Board_State[0][5] = BISHOP_BLACK; Board_Pieces[0][5] = BISHOP_BLACK;
Board_State[0][3] = QUEEN_BLACK; Board_Pieces[0][3] = QUEEN_BLACK;
Board_State[0][4] = KING_BLACK; Board_Pieces[0][4] = KING_BLACK;
Board_State[7][0] = ROOK_WHITE; Board_Pieces[7][0] = ROOK_WHITE;
Board_State[7][7] = ROOK_WHITE; Board_Pieces[7][7] = ROOK_WHITE;
Board_State[7][1] = KNIGHT_WHITE; Board_Pieces[7][1] = KNIGHT_WHITE;
Board_State[7][6] = KNIGHT_WHITE; Board_Pieces[7][6] = KNIGHT_WHITE;
Board_State[7][2] = BISHOP_WHITE; Board_Pieces[7][2] = BISHOP_WHITE;
Board_State[7][5] = BISHOP_WHITE; Board_Pieces[7][5] = BISHOP_WHITE;
Board_State[7][3] = QUEEN_WHITE; Board_Pieces[7][3] = QUEEN_WHITE;
Board_State[7][4] = KING_WHITE; Board_Pieces[7][4] = KING_WHITE;
for (uint8_t i = 0; i < 8; i++) for (uint8_t i = 0; i < 8; i++)
{ {
Board_State[1][i] = PAWN_BLACK; Board_Pieces[1][i] = PAWN_BLACK;
Board_State[6][i] = PAWN_WHITE; Board_Pieces[6][i] = PAWN_WHITE;
} }
} }
void Board_get_game_state(uint8_t * game_state) Game_State_t Board_get_game_state(void)
{ {
*game_state = Game_State; return Game_State;
} }

57
src/game_logic/chess_board.h
View File

@ -1,15 +1,17 @@
#include "stdint.h" #include "stdint.h"
#define LIGHT_OFF 0u enum Board_States_t {
#define POTENTIAL_MOVE 1u LIGHT_OFF = 0u,
#define POTENTIAL_TAKE 2u POTENTIAL_MOVE,
#define SUGGESTED_MOVE 3u POTENTIAL_TAKE,
#define ERROR_MOVE 4u SUGGESTED_MOVE,
#define PIECE_ORIGIN 5u ERROR_MOVE,
#define PIECE_NEEDS_TO_BE_HERE 6u PIECE_ORIGIN,
#define POTENTIAL_CASTLE 7u PIECE_NEEDS_TO_BE_HERE,
#define PIECE_NEEDS_TO_BE_REMOVED 8u POTENTIAL_CASTLE,
#define CONVERTING_PAWN 9u PIECE_NEEDS_TO_BE_REMOVED,
CONVERTING_PAWN,
};
#define PAWN_WHITE 0u #define PAWN_WHITE 0u
#define PAWN_BLACK 1u #define PAWN_BLACK 1u
@ -26,7 +28,20 @@
#define SQUARE_EMPTY 12u #define SQUARE_EMPTY 12u
// enum Game_State_t {
// GAME_STATE_P1_TURN_BEGINING = 0u,
// GAME_STATE_P1_TURN_IN_PROGRESS,
// GAME_STATE_P1_TURN_TAKING,
// GAME_STATE_P2_TURN_BEGINING,
// GAME_STATE_P2_TURN_IN_PROGRESS,
// GAME_STATE_P2_TURN_TAKING,
// GAME_STATE_ERROR_DETECTED,
// //All games states from over on, correspond to states of the game being over
// GAME_STATE_OVER,
// GAME_STATE_OVER_WHITE_WIN,
// GAME_STATE_OVER_BLACK_WIN,
// GAME_STATE_OVER_STALE_MATE,
// };
#define GAME_STATE_IDLE 0u #define GAME_STATE_IDLE 0u
#define GAME_STATE_P1_TURN_BEGINING 1u #define GAME_STATE_P1_TURN_BEGINING 1u
#define GAME_STATE_P1_TURN_IN_PROGRESS 2u #define GAME_STATE_P1_TURN_IN_PROGRESS 2u
@ -35,13 +50,29 @@
#define GAME_STATE_P2_TURN_IN_PROGRESS 5u #define GAME_STATE_P2_TURN_IN_PROGRESS 5u
#define GAME_STATE_P2_TURN_TAKING 6u #define GAME_STATE_P2_TURN_TAKING 6u
#define GAME_STATE_ERROR_DETECTED 7u #define GAME_STATE_ERROR_DETECTED 7u
//All games states from over on, correspond to states of the game being over
#define GAME_STATE_OVER 8u #define GAME_STATE_OVER 8u
#define GAME_STATE_OVER_WHITE_WIN 8u #define GAME_STATE_OVER_WHITE_WIN 8u
#define GAME_STATE_OVER_BLACK_WIN 9u #define GAME_STATE_OVER_BLACK_WIN 9u
#define GAME_STATE_OVER_STALE_MATE 10u #define GAME_STATE_OVER_STALE_MATE 10u
#define WHITE_TURN true
#define BLACK_TURN false
enum Turn_State_t {
BEGINNING = 0,
IN_PROGRESS,
FINALIZING,
};
struct Game_State_t {
bool game_over = false;
bool error_detected = false;
bool player_turn = WHITE_TURN;
Turn_State_t turn_state = BEGINNING;
};
void chess_board_init(void); void chess_board_init(void);
void Board_Changed(uint8_t current_binary_board[12]); void Board_Changed(uint8_t current_binary_board[12]);
void Board_get_lights_and_state(uint8_t board_lights[12][8], uint8_t board_state[12][8]); void Board_get_lights_and_state(uint8_t board_lights[12][8], uint8_t board_state[12][8]);
void Board_get_game_state(uint8_t * game_state); Game_State_t Board_get_game_state(void);

19
src/pc_app/user_interface_abstraction.cpp
View File

@ -31,7 +31,7 @@ static uint8_t Current_Binary_Board[8] = {0};
* @param board_state board state * @param board_state board state
* @param game_state games state * @param game_state games state
*/ */
static void ui_draw_end_game(SDL_Renderer *p_renderer, uint8_t board_state[8][8], uint8_t game_state) static void ui_draw_end_game(SDL_Renderer *p_renderer, uint8_t board_state[8][8], Game_State_t game_state)
{ {
SDL_SetRenderTarget(p_renderer, Board_Texture); SDL_SetRenderTarget(p_renderer, Board_Texture);
SDL_SetRenderDrawColor(p_renderer, 0x7f, 0x7f, 0x7f, 0); SDL_SetRenderDrawColor(p_renderer, 0x7f, 0x7f, 0x7f, 0);
@ -50,16 +50,18 @@ static void ui_draw_end_game(SDL_Renderer *p_renderer, uint8_t board_state[8][8]
Rectangle.h = square_size; Rectangle.h = square_size;
uint8_t white_color[4] = {0xFF, 0xFF, 0x00, 0x00}; uint8_t white_color[4] = {0xFF, 0xFF, 0x00, 0x00};
uint8_t black_color[4] = {0xFF, 0xFF, 0x00, 0x00}; uint8_t black_color[4] = {0xFF, 0xFF, 0x00, 0x00};
if(game_state == GAME_STATE_OVER_WHITE_WIN) if (!game_state.error_detected){
if(game_state.player_turn)
{ {
white_color[0] = 0x00; white_color[1] = 0xFF; white_color[2] = 0x00; white_color[3] = 0x00; 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; black_color[0] = 0xFF; black_color[1] = 0x00; black_color[2] = 0x00; black_color[3] = 0x00;
} }
else if (game_state == GAME_STATE_OVER_BLACK_WIN) else
{ {
black_color[0] = 0x00; black_color[1] = 0xFF; black_color[2] = 0x00; black_color[3] = 0x00; black_color[0] = 0x00; black_color[1] = 0xFF; black_color[2] = 0x00; black_color[3] = 0x00;
white_color[0] = 0xFF; white_color[1] = 0x00; white_color[2] = 0x00; white_color[3] = 0x00; white_color[0] = 0xFF; white_color[1] = 0x00; white_color[2] = 0x00; white_color[3] = 0x00;
} }
}
for (size_t j = 0; j < 8; j++) for (size_t j = 0; j < 8; j++)
@ -103,7 +105,7 @@ static void ui_draw_end_game(SDL_Renderer *p_renderer, uint8_t board_state[8][8]
} }
/** /**
* @brief Funtion for that will draw the current state of the board including pecies and colors for suggested and possible moves. * @brief Funtion for that will draw the current state of the board including pieces and colors for suggested and possible moves.
* @param *p_renderer pointer to the renderer object: * @param *p_renderer pointer to the renderer object:
* @retval None * @retval None
*/ */
@ -236,16 +238,15 @@ void ui_redraw_board(SDL_Renderer *p_renderer)
{ {
uint8_t board_lights[8][8]; uint8_t board_lights[8][8];
uint8_t board_state[8][8]; uint8_t board_state[8][8];
uint8_t game_state; Game_State_t game_state = Board_get_game_state();
Board_get_game_state(&game_state);
Board_get_lights_and_state(board_lights, board_state); Board_get_lights_and_state(board_lights, board_state);
if(game_state < GAME_STATE_OVER) if(game_state.game_over)
{ {
ui_draw_board(p_renderer, board_lights, board_state); ui_draw_end_game(p_renderer, board_state, game_state);
} }
else else
{ {
ui_draw_end_game(p_renderer, board_state, game_state); ui_draw_board(p_renderer, board_lights, board_state);
} }
} }