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Ole Morud
2023-03-19 20:37:46 +01:00
parent 37fc5e7838
commit 79d776f897
1 changed files with 49 additions and 68 deletions
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117
chess.c
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@@ -1,13 +1,10 @@
#include <ctype.h> #include <ctype.h> /* isalpha, isdigit ... */
#include <locale.h> #include <locale.h> /* setlocale */
#include <string.h> #include <string.h> /* memcpy */
#include <wchar.h> #include <stdio.h> /* printf, scanf */
#include <stdio.h> #include <stdint.h> /* int32_t */
#include <stdlib.h> #include <stdbool.h> /* true, false */
#include <stdint.h>
#include <stdbool.h>
typedef int32_t tile_t; typedef int32_t tile_t;
typedef ssize_t pos_t; typedef ssize_t pos_t;
@@ -15,7 +12,7 @@ typedef ssize_t pos_t;
#define ROW ( (pos_t) 8 ) #define ROW ( (pos_t) 8 )
#define COL ( (pos_t) 1 ) #define COL ( (pos_t) 1 )
#define BOARD_SIZE 8*8*sizeof(tile_t) #define BOARD_SIZE ( 8*8*sizeof(tile_t) )
#define E ( (tile_t) 0 ) /* empty */ #define E ( (tile_t) 0 ) /* empty */
#define K ( (tile_t) 1 ) /* king */ #define K ( (tile_t) 1 ) /* king */
@@ -72,13 +69,12 @@ int main(){
return 0; return 0;
} }
/* /*
* Sets the foreground or background color. Sets the foreground or background color for subsequent writes.
* Modes: Modes:
* - 0: change background 0: change background
* - 1: change foreground 1: change foreground
* - 2: reset colors 2: reset colors
*/ */
void setcolor(const int mode, const int r, const int g, const int b){ void setcolor(const int mode, const int r, const int g, const int b){
if( mode == 2 ) if( mode == 2 )
@@ -87,52 +83,38 @@ void setcolor(const int mode, const int r, const int g, const int b){
printf("\033[%i;2;%i;%i;%im", mode?38:48, r, g, b); printf("\033[%i;2;%i;%i;%im", mode?38:48, r, g, b);
}; };
/* Prints the board */
/*
* Prints the board
*/
void print_board(tile_t* board){ void print_board(tile_t* board){
/* /* https://en.wikipedia.org/wiki/Chess_symbols_in_Unicode
The loop checks if the tile is empty and prints ' ' if so.
Otherwise the foreground color is set to match the player
and the unicode symbol for the piece is printed.
The unicode value for a fullcolor chess king is 0x2654
the following unicode 5 unicode characters are the
other white chess pieces. (matches macro definitions)
(https://en.wikipedia.org/wiki/Chess_symbols_in_Unicode)
The unicode symbol is calculated from adding 0x2653 with the The unicode symbol is calculated from adding 0x2653 with the
piece value. piece value. */
*/
for(size_t i=0; i<8; i++){ for (size_t i=0; i<8; i++) {
printf("\n %zu ", 8-i); // print number coordinates on y-axis printf("\n %zu ", 8-i); // print number coordinates on y-axis
for(size_t j=0; j<8; j++){ for (size_t j=0; j<8; j++) {
tile_t p = board[i*8+j]; tile_t p = board[i*8+j];
// Make tile black and white // Make tile dark and light
if((i+j) % 2) if ((i+j) % 2)
setcolor(0, 100, 100, 150); BG_DARKBLUE();
else else
setcolor(0, 150, 150, 200); BG_LIGHTBLUE();
// Print empty space and do nothing if tile is empty // Print empty space and do nothing if tile is empty
if(p == E){ if (tile_empty(p)) {
printf(" "); printf(" ");
continue; continue;
} }
// Set piece color // Set piece color
if(p > 0){ if (p > 0)
setcolor(1, 0xff, 0xff, 0xff); //white FG_WHITE();
}else{ else
setcolor(1, 0, 0, 0); //black FG_BLACK();
p *= -1;
}
printf("%lc ", UNICODE_CHESS_SYMBOL + p); printf("%lc ", UNICODE_CHESS_SYMBOL + abs_tile(p));
} }
setcolor(2, 0, 0, 0); // reset text attributes setcolor(2, 0, 0, 0); // reset text attributes
@@ -140,14 +122,17 @@ void print_board(tile_t* board){
// Print horizontal letter coordinates // Print horizontal letter coordinates
printf("\n "); printf("\n ");
for(int i=0; i<8; i++) printf(" %c", 'a'+i);
for(int i=0; i<8; i++)
printf(" %c", 'a'+i);
} }
/* /*
* Resets/inits the board * Resets/inits the board
*/ */
void init_board(tile_t *board){ void init_board(tile_t *board)
{
// black pieces are prefixed by a minus (-) // black pieces are prefixed by a minus (-)
const tile_t start[] = { const tile_t start[] = {
@@ -167,7 +152,8 @@ void init_board(tile_t *board){
// TODO: Implement algebaric notation // TODO: Implement algebaric notation
/* Get move, check move and log move for turn <turn_no> */ /* Get move, check move and log move for turn <turn_no> */
void do_turn(int turn_no, tile_t *board){ void do_turn(int turn_no, tile_t *board)
{
char input[3] = { 0 }; char input[3] = { 0 };
int from = -1, int from = -1,
@@ -177,7 +163,7 @@ void do_turn(int turn_no, tile_t *board){
printf("\nPlayer %i, your turn to move", 1 + turn_no%2); printf("\nPlayer %i, your turn to move", 1 + turn_no%2);
/* temporary and ugly solution - read from and to */ /* temporary and ugly solution - read from and to */
while(from == -1 || to == -1){ while (from == -1 || to == -1) {
from = -1; from = -1;
to = -1; to = -1;
@@ -186,7 +172,7 @@ void do_turn(int turn_no, tile_t *board){
tmp = get_piece(input); tmp = get_piece(input);
if(tmp == -1) if (tmp == -1)
continue; continue;
from = tmp; from = tmp;
@@ -195,12 +181,12 @@ void do_turn(int turn_no, tile_t *board){
scanf(" %2s", input); scanf(" %2s", input);
tmp = get_piece(input); tmp = get_piece(input);
if(tmp == -1) if (tmp == -1)
continue; continue;
to = tmp; to = tmp;
if(!move_ok(board, from, to, turn_no % 2 ? BLACK : WHITE )){ if (!move_ok(board, from, to, turn_no % 2 ? BLACK : WHITE )) {
from = -1; from = -1;
continue; continue;
} }
@@ -212,28 +198,28 @@ void do_turn(int turn_no, tile_t *board){
/* Translates A1, 3B etc. to the 1D index of the board */ /* Translates A1, 3B etc. to the 1D index of the board */
int get_piece(char *input){ int get_piece(char *input)
{
int x = -1, int x = -1,
y = -1, y = -1,
c; c;
for(int i=0; i<2; i++){ for (int i=0; i<2; i++) {
c = input[i]; c = input[i];
if(isalpha(c)) c = toupper(input[0]); if (isalpha(c))
c = toupper(input[0]);
if( 'A' <= c && c <= 'H' ){ if( 'A' <= c && c <= 'H' )
x = c - 'A'; x = c - 'A';
}else if('1' <= c && c <= '8'){ else if('1' <= c && c <= '8')
y = c - '1'; y = c - '1';
}
} }
if(x != -1 && y != -1){ if (x != -1 && y != -1)
return 8*(7-y) + x; return 8*(7-y) + x;
}else{ else
return -1; return -1;
}
} }
pos_t abs_pos(pos_t p) pos_t abs_pos(pos_t p)
@@ -285,15 +271,13 @@ bool same_color(tile_t a, tile_t b)
/* Returns true if a move is valid, false otherwise */ /* Returns true if a move is valid, false otherwise */
bool move_ok(tile_t* board, pos_t from, pos_t to, int const player) bool move_ok(tile_t* board, pos_t from, pos_t to, int const player)
{ {
printf("\nattempting to move %i to %i", board[from], board[to]);
/* player must own piece it moves */ /* player must own piece it moves */
if (board[from] * player < 0) { if (board[from] * player < 0) {
printf("\nYou do not own this piece"); printf("\nYou do not own this piece");
return false; return false;
} }
/* player can't take own pieces */ /* player can't take own pieces or move piece onto itself*/
if (same_color(board[from], board[to])) { if (same_color(board[from], board[to])) {
printf("\nYou can't take your own pieces"); printf("\nYou can't take your own pieces");
return false; return false;
@@ -301,9 +285,6 @@ bool move_ok(tile_t* board, pos_t from, pos_t to, int const player)
/* check piece specific moves */ /* check piece specific moves */
switch (abs_tile(board[from])) { switch (abs_tile(board[from])) {
default:
return 0;
break;
/* PAWNS */ /* PAWNS */
case P: case P: