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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <tak.h>
#include <minimax_cnn1986.h>
const char* esc = "[L";
FILE *lcd = NULL;
static char *gamelog = 0;
static int human, search_depth;
static void
write_line(const char *line) {
fputs(line, lcd);
fflush(lcd);
}
static void
append_to_gamelog(const char *line, const uint8_t win_line) {
// I _could_ dynamically compute the size but ... don't let
// `perfect' be the enemy of `good' ?
char prepend[8];
if (win_line) {
prepend[0] = '\n';
prepend[1] = 0;
} else if (ply & 1) {
snprintf(prepend, 7, "%s%d. ",
(ply == 1) ? "" : "\n", ply/2+1);
} else {
strcpy(prepend, " ");
}
// Make room for this line
gamelog = realloc(gamelog,
strlen(gamelog)
+ strlen(prepend)
+ strlen(line) + 1);
strcat(gamelog,prepend);
strcat(gamelog,line);
}
static void
end_game(char *line, char *win) {
append_to_gamelog(line, 0);
append_to_gamelog(win, 1);
fprintf(lcd, "Game over: %s\n", win);
fflush(lcd);
}
static int
handle_turn(char *line) {
// Track win state
uint8_t new_win = (won == 0xFF);
switch (do_ptn(line)) {
// Errors
case PTN_INVALID: { write_line("Invalid PTN."); break; }
case ACT_ILLEGAL: { write_line("Illegal ply."); break; }
case ACT_OVERFLOW: { write_line("Overflow."); break; }
// Game has ended
case GAME_END: {
// Did it end this turn?
if (new_win) {
switch (won) {
case WIN_DRAW: { end_game(line,"1/2-1/2"); break; }
case WIN_FLAT_BLACK: { end_game(line,"0-F"); break; }
case WIN_FLAT_WHITE: { end_game(line,"F-0"); break; }
case WIN_ROAD_BLACK: { end_game(line,"0-R"); break; }
case WIN_ROAD_WHITE: { end_game(line,"R-0"); break; }
}
return EXIT_SUCCESS;
} else {
write_line("Game over.");
break;
}
}
// Valid, append to game log
default: {
append_to_gamelog(line, 0);
return EXIT_SUCCESS;
}
}
return EXIT_FAILURE;
}
static void
new_game(uint8_t size) {
reset_state(size);
write_line("New 5x5 game.");
if (gamelog) gamelog = realloc(gamelog, sizeof(char));
else gamelog = malloc(sizeof(char));
gamelog[0] = 0;
}
// Set up output function for ct1986
static uint8_t perc;
inline void
ct1986_display_progress(const uint8_t depth) {
if (depth == 0) {
perc++;
// back four spaces
for (int k=0;k<4;k++) {
fprintf(lcd, "%sl", esc);
fflush(lcd);
}
// clear line
fprintf(lcd, "%sk", esc);
fflush(lcd);
// write percentage
fprintf(lcd, "%3d%%", perc*4);
}
}
static int
ct1986_turn(const uint8_t search_depth) {
// Prepare progress bar
fputs("Computing.. ", lcd); fflush(lcd);
// Run the minimax
perc = 0;
float minimax = ct1986_generate(search_depth);
fputc('\n', lcd);
// Failed to find a move?
if (minimax <= -infty) {
fprintf(lcd, "%s concedes!\n", (ply & 1) ? "Black" : "White");
return EXIT_FAILURE;
} else {
fprintf(lcd, "%s: %s\n",
(ply & 1) ? "Black" : "White",
ct1986_ptn);
handle_turn(ct1986_ptn);
return EXIT_SUCCESS;
}
}
static void
do_game_log(void) {
fputs(gamelog, lcd);
}
static int
input_is_not_turn(const char *line) {
switch (line[0]) {
case 'l': { do_game_log(); break; }
case 'n': { new_game(5); break; }
case 'd': {
search_depth = line[1] - '0';
fprintf(lcd, "Search depth: %d\n", search_depth);
fflush(lcd);
break;
}
case 'b': { human = 1; new_game(5); break; }
case 'w': { human = 0; new_game(5); break; }
default: return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
int
main(int argc, char **argv) {
(void)(argc);
(void)(argv);
lcd = fopen("/dev/lcd", "w");
if (lcd == NULL) return EXIT_FAILURE;
human = 0;
search_depth = 1;
new_game(5);
char *line = NULL;
ssize_t read;
size_t alloc_size;
for (int playing = 1; playing;) {
write_line("Loaded ct1986!\n");
while ((human == 0) && (read = getline(&line, &alloc_size, stdin)) != -1) {
if (read) {
line[read - 1] = 0;
if (input_is_not_turn(line)) {
int r = handle_turn(line);
if (r == EXIT_SUCCESS && won == 0xFF) {
human = 1;
}
}
}
}
if ((human == 0) && (read == -1)) {
playing = 0;
} else {
ct1986_turn(search_depth);
human = 0;
}
}
fclose(lcd);
return EXIT_SUCCESS;
}
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