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Win game logic

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This commit is contained in:
Daniel Weber 2023-01-10 22:20:55 -05:00
parent a488636424
commit 63fa9d8eab
1 changed files with 89 additions and 43 deletions
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132
src/chess_board.cpp
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@ -3,6 +3,7 @@
#include <stack>
#include <string.h>
#include "pieces.hpp"
#include <SDL2/SDL.h>
static uint8_t Board_State[12][8] = {{0}};
@ -259,11 +260,11 @@ bool square_is_safe(uint8_t row, uint8_t column)
return true;
}
bool Check_If_Move_Caused_Check(uint8_t row, uint8_t column)
bool Check_If_Move_Caused_Check(uint8_t piece, uint8_t row, uint8_t column)
{
bool ret_val;
uint8_t store_current_piece = Board_State[row][column];
Board_State[row][column] = Selected_Piece;
Board_State[row][column] = piece;
//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;
ret_val = !square_is_safe(King_Locations[white_black_idx][0u], King_Locations[white_black_idx][1u]);
@ -281,12 +282,15 @@ void Check_If_Could_Cause_Check(uint8_t row, uint8_t column)
Board_State[row][column] = temp_storage;
}
static void Set_Light(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)
{
if ((!High_Alert) || (!Check_If_Move_Caused_Check(row, column)))
bool ret_val = false;
if (!Check_If_Move_Caused_Check(piece, row, column))
{
Board_Lights[row][column] = state;
ret_val = true;
}
return ret_val;
}
/**
@ -295,12 +299,14 @@ static void Set_Light(uint8_t row, uint8_t column, uint8_t state)
* @param column: column to move to
* @retval None
*/
static void pawn_move(uint8_t row, uint8_t column)
static bool pawn_move(uint8_t piece, uint8_t row, uint8_t column)
{
bool ret_val = false;
if (Board_State[row][column] == SQUARE_EMPTY)
{
Set_Light(row, column, POTENTIAL_MOVE);
ret_val = Set_Light(piece, row, column, POTENTIAL_MOVE);
}
return ret_val;
}
/**
@ -310,11 +316,12 @@ static void pawn_move(uint8_t row, uint8_t column)
* @param direction_c: Column direction
* @param row: current row location
* @param column: current column location
* @param piece_one: the piece that is casting the ray.
* @param piece: the piece that is casting the ray.
* @retval None
*/
static void cast_a_ray(int8_t direction_r, int8_t direction_c, uint8_t column, uint8_t row, uint8_t piece_one)
static bool cast_a_ray(uint8_t piece, int8_t direction_r, int8_t direction_c, uint8_t column, uint8_t row)
{
bool ret_val = false;
bool loop = true;
int8_t x = row;
int8_t y = column;
@ -328,11 +335,11 @@ static void cast_a_ray(int8_t direction_r, int8_t direction_c, uint8_t column, u
}
else if (Board_State[x][y] == SQUARE_EMPTY)
{
Set_Light(x, y, POTENTIAL_MOVE);
ret_val = Set_Light(piece, x, y, POTENTIAL_MOVE) || ret_val;
}
else if (opposite_teams(piece_one, Board_State[x][y]))
else if (opposite_teams(piece, Board_State[x][y]))
{
Set_Light(x, y, POTENTIAL_TAKE);
ret_val = Set_Light(piece, x, y, POTENTIAL_TAKE) || ret_val;
/* once we take a piece we can no longer take anymore */
loop = false;
}
@ -341,6 +348,7 @@ static void cast_a_ray(int8_t direction_r, int8_t direction_c, uint8_t column, u
loop = false;
}
}
return ret_val;
}
/**
@ -349,12 +357,14 @@ static void cast_a_ray(int8_t direction_r, int8_t direction_c, uint8_t column, u
* @param column: Column obviously
* @retval None
*/
static void pawn_take(uint8_t row, uint8_t column, uint8_t piece)
static bool pawn_take(uint8_t piece, uint8_t row, uint8_t column)
{
bool ret_val = false;
if ((Board_State[row][column] < SQUARE_EMPTY) && opposite_teams(piece, Board_State[row][column]))
{
Set_Light(row, column, POTENTIAL_TAKE);
ret_val = Set_Light(piece, row, column, POTENTIAL_TAKE);
}
return ret_val;
}
/**
@ -364,31 +374,32 @@ static void pawn_take(uint8_t row, uint8_t column, uint8_t piece)
* @param column: Current column location of the piece.
* @retval None
*/
static void Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
static bool Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
{
bool ret_val = false;
switch (piece)
{
case PAWN_WHITE :
case PAWN_BLACK:
{
int8_t direction = White_Turn ? -1 : 1;
int8_t direction = white_team(piece) ? -1 : 1;
uint8_t temp_row = row + direction;
if (row == (White_Turn ? 6u : 1u))
if (row == (white_team(piece) ? 6u : 1u))
{
if(Board_State[temp_row][column] == SQUARE_EMPTY)
{
pawn_move(row + (direction * 2u), column);
ret_val = pawn_move(piece, row + (direction * 2u), column) || ret_val;
}
}
pawn_move(temp_row, column);
ret_val = pawn_move(piece, temp_row, column) || ret_val;
if(column != 0)
{
pawn_take(temp_row, column - 1u, piece);
ret_val = pawn_take(piece, temp_row, column - 1u) || ret_val;
}
if(column != 7u)
{
pawn_take(temp_row, column + 1u, piece);
ret_val = pawn_take(piece, temp_row, column + 1u) || ret_val;
}
break;
@ -420,7 +431,7 @@ static void Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
up_down_step = 0;
left_right_step = -1;
}
cast_a_ray(up_down_step, left_right_step, column, row, piece);
ret_val = cast_a_ray(piece, up_down_step, left_right_step, column, row) || ret_val;
}
break;
@ -470,11 +481,11 @@ static void Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
{
if (Board_State[x][y] == SQUARE_EMPTY)
{
Set_Light(x, y, POTENTIAL_MOVE);
ret_val = Set_Light(piece, x, y, POTENTIAL_MOVE) || ret_val;
}
else if (opposite_teams(piece, Board_State[x][y]))
{
Set_Light(x, y, POTENTIAL_TAKE);
ret_val = Set_Light(piece, x, y, POTENTIAL_TAKE) || ret_val;
}
}
}
@ -508,7 +519,7 @@ static void Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
up_down_step = 1;
left_right_step = -1;
}
cast_a_ray(up_down_step, left_right_step, column, row, piece);
ret_val = cast_a_ray(piece, up_down_step, left_right_step, column, row) || ret_val;
}
break;
}
@ -516,9 +527,9 @@ static void Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
case QUEEN_BLACK:
{
//Mark bishop moves
Mark_Potential_Moves((piece - 2u), column, row);
ret_val = Mark_Potential_Moves((piece - 2u), column, row) || ret_val;
//Mark rook moves
Mark_Potential_Moves((piece - 6u), column, row);
ret_val = Mark_Potential_Moves((piece - 6u), column, row) || ret_val;
break;
}
case KING_WHITE:
@ -539,16 +550,18 @@ static void Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
if (Board_State[x][y] == SQUARE_EMPTY)
{
Board_Lights[x][y] = POTENTIAL_MOVE;
ret_val = true;
}
else if (opposite_teams(piece, Board_State[x][y]))
{
Board_Lights[x][y] = POTENTIAL_TAKE;
ret_val = true;
}
}
}
}
uint8_t white_black_idx = White_Turn ? 0u : 1u;
uint8_t kings_row = White_Turn ? 7u : 0u;
uint8_t white_black_idx = white_team(piece) ? 0u : 1u;
uint8_t kings_row = white_team(piece) ? 7u : 0u;
//Can only castle if not currently in check
if (square_is_safe(row, column))
@ -562,6 +575,7 @@ static void Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
{
// Yay we can castle queen side!
Board_Lights[kings_row][2u] = POTENTIAL_CASTLE;
ret_val = true;
}
}
@ -573,6 +587,7 @@ static void Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
{
// Yay we can castle king side!
Board_Lights[kings_row][6u] = POTENTIAL_CASTLE;
ret_val = true;
}
}
}
@ -583,6 +598,7 @@ static void Mark_Potential_Moves(uint8_t piece, uint8_t column, uint8_t row)
default:
break;
}
return ret_val;
}
/**
@ -638,6 +654,31 @@ static void Mark_Taken_Piece_Spots_In_Jail(void)
}
}
bool Check_If_Player_Can_Move(bool white)
{
for (uint8_t row = 0; row < 8u; row++)
{
for (uint8_t column = 0; column < 8u; column++)
{
if((white_team(Board_State[row][column]) == white))
{
SDL_Log("move: Row:%d, Col:%d", row, column);
if(Mark_Potential_Moves(Board_State[row][column], column, row))
{
SDL_Log("Player Can still move: Row:%d, Col:%d", row, column);
clear_lights();
return true;
}
}
}
}
clear_lights();
SDL_Log("Player cant move");
return false;
}
/**
* @brief Function for switching the players turn. Incharge of handling the state machine reset.
*/
@ -650,8 +691,21 @@ static void Switch_Turns(void)
// 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;
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 sitching turns is to check if the game is over.
bool player_can_play = Check_If_Player_Can_Move(White_Turn);
if(!player_can_play)
{
if(Check[white_black_idx])
{
Game_State = White_Turn ? GAME_STATE_OVER_BLACK_WIN : GAME_STATE_OVER_WHITE_WIN;
}
else
{
Game_State = GAME_STATE_OVER_STALE_MATE;
}
}
}
/**
@ -712,13 +766,13 @@ static bool Converting_Pawn_If_Applicable(uint8_t row, uint8_t column)
if((row == Converting_Pawn_Row_Col[0]) &&
(Converting_Pawn_Row_Col[1] == column))
{
//Putting the peice down on the board
//Putting the piece down on the board
if(Board_State[row][column] == SQUARE_EMPTY)
{
Board_State[row][column] = Pawn_Converted_To;
Board_Lights[row][column] = LIGHT_OFF;
}
//Picking the peice back up to toggle through the options
//Picking the piece back up to toggle through the options
else
{
Board_State[row][column] = SQUARE_EMPTY;
@ -821,17 +875,13 @@ static void Board_Square_Was_Toggled(uint8_t j, uint8_t i)
}
Selected_Piece = Board_State[j][i];
Board_State[j][i] = SQUARE_EMPTY;
Mark_Potential_Moves(Selected_Piece, i, j);
(void)Mark_Potential_Moves(Selected_Piece, i, j);
Board_Lights[j][i] = PIECE_ORIGIN;
Game_State++;
}
else
{
if(Converting_Pawn_If_Applicable(j, i))
{
}
else
if(!Converting_Pawn_If_Applicable(j, i))
{
Last_Game_State = Game_State;
Game_State = GAME_STATE_ERROR_DETECTED;
@ -842,7 +892,7 @@ static void Board_Square_Was_Toggled(uint8_t j, uint8_t i)
break;
}
/* Person is in the middle of taking a turn for example they might already have a peice 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 GAME_STATE_P1_TURN_IN_PROGRESS:
{
@ -933,11 +983,7 @@ static void Board_Square_Was_Toggled(uint8_t j, uint8_t i)
}
else
{
if(Converting_Pawn_If_Applicable(j, i))
{
}
else
if(!Converting_Pawn_If_Applicable(j, i))
{
Last_Game_State = Game_State;
Game_State = GAME_STATE_ERROR_DETECTED;