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466 lines (419 loc) · 11.8 KB
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/* Fiver for Game Boy (akin to Wordle).
* A weekend project by stacksmashing.
* Contact: twitter.com/ghidraninja
* code@stacksmashing.net
*/
#include <gb/gb.h>
#include <gb/drawing.h>
#include <sms/hardware.h>
#include <gbdk/console.h>
#include <gbdk/font.h>
#include <string.h>
#include <stdio.h>
#include <stdint.h>
#include <rand.h>
#include <time.h>
#include "decode.h"
void set_box_color_for_letter(uint8_t e);
void set_letter_color_for_letter(uint8_t e);
#define FLASH_DELAY ((uint32_t)250 * CLOCKS_PER_SEC / 1000)
const char *kb[3] = {
"Q W E R T Y U I O P",
" A S D F G H J K L",
" Z X C V B N M"};
uint8_t kb_coords[3] = {
10,
9,
7
};
uint8_t kb_offsets[3] = {
0,
1,
2
};
uint8_t seeded = 0;
uint8_t kb_x = 0;
uint8_t kb_y = 0;
uint8_t guess_nr;
uint8_t hard = 0;
// current word
char word[6];
// current guess
char guess[6];
// list of all accepted guesses
char guesses[6][5];
// list of evaluation bitmaps for all the letters
// the best value is what counts
#define RIGHT_LETTER_WRONG_PLACE 4
#define RIGHT_LETTER_RIGHT_PLACE 2
#define WRONG_LETTER 1
uint8_t guessed[26];
// evaluation of current word:
// 0 = wrong letter
// RIGHT_LETTER_RIGHT_PLACE = right letter right place
// RIGHT_LETTER_WRONG_PLACE + count = right letter wrong place, with count
uint8_t evals[6][5];
static void waitpaduprepeat() {
static uint16_t delta = (uint32_t)350 * CLOCKS_PER_SEC / 1000;
uint8_t j;
uint16_t start = sys_time;
while ((j = joypad()) && (uint16_t)(sys_time-start) < delta) ;
if (j)
delta = (uint32_t)100 * CLOCKS_PER_SEC / 1000;
else
delta = (uint32_t)350 * CLOCKS_PER_SEC / 1000;
}
uint8_t contains(char *str, char c) {
uint8_t count = 0;
while(*str) {
if(*str == c) {
count++;
}
str++;
}
return count;
}
void evaluate_letters(char* guess, uint8_t* eval) {
for (uint8_t i=0;i<5;i++) {
char c = guess[i];
if (word[i] == c) {
eval[i] = RIGHT_LETTER_RIGHT_PLACE;
guessed[c-'A'] = RIGHT_LETTER_RIGHT_PLACE;
}
else {
eval[i] = 0;
guessed[c-'A'] |= WRONG_LETTER;
}
}
for (uint8_t i=0;i<5;i++) {
if (!eval[i]) {
char c = guess[i];
uint8_t count = contains(word, c);
if (count) {
uint8_t already = 0;
for (uint8_t j=0;j<5;j++) {
if (eval[j] && guess[j] == c)
already++;
}
if (already < count) {
uint8_t cg = contains(guess, c);
eval[i] = RIGHT_LETTER_WRONG_PLACE + (cg < count ? cg : count);
guessed[c-'A'] |= RIGHT_LETTER_WRONG_PLACE;
}
}
}
}
}
uint8_t validate_hard(char* prevGuess, uint8_t* prevEval, char* curGuess, uint8_t* curEval) {
for (uint8_t i=0; i<5; i++) {
uint8_t e = prevEval[i];
if (e == RIGHT_LETTER_RIGHT_PLACE) {
if (curEval[i] != RIGHT_LETTER_RIGHT_PLACE)
return 0;
}
else if (e >= RIGHT_LETTER_WRONG_PLACE) {
if (contains(curGuess, prevGuess[i]) < e-RIGHT_LETTER_WRONG_PLACE)
return 0;
}
}
return 1;
}
void draw_word_rect(uint8_t x, uint8_t y, char* guess, uint8_t* eval) {
uint8_t gx = x/8;
uint8_t gy = y/8;
x -= 3;
y -= 4;
for(uint8_t i=0; i < 5; i++) {
if(guess) {
char letter = guess[i];
uint8_t e = eval[i];
set_box_color_for_letter(e);
box(x, y, x+14, y+14, M_FILL);
set_letter_color_for_letter(e);
gotogxy(gx, gy);
wrtchr(letter);
gx += 2;
} else {
color(BLACK, WHITE, M_NOFILL);
box(x, y, x+14, y+14, M_NOFILL);
}
x += 16;
}
}
void set_box_color_for_letter(uint8_t e) {
if(e == RIGHT_LETTER_RIGHT_PLACE) {
color(BLACK, BLACK, M_FILL);
} else if(e >= RIGHT_LETTER_WRONG_PLACE) {
color(BLACK, DKGREY, M_FILL);
} else {
color(BLACK, WHITE, M_NOFILL);
}
}
void set_letter_color_for_letter(uint8_t e) {
if(e == RIGHT_LETTER_RIGHT_PLACE) {
color(WHITE, BLACK, M_NOFILL);
} else if(e >= RIGHT_LETTER_WRONG_PLACE) {
color(WHITE, DKGREY, M_NOFILL);
} else {
color(BLACK, WHITE, M_NOFILL);
}
}
void set_color_for_letter(char letter) {
if(letter == ' ') {
color(BLACK, WHITE, M_NOFILL);
}
else {
uint8_t g = guessed[letter-'A'];
if (g & RIGHT_LETTER_RIGHT_PLACE) {
color(DKGREY, WHITE, M_NOFILL);
} else if(g & RIGHT_LETTER_WRONG_PLACE) {
color(DKGREY, WHITE, M_NOFILL);
} else if(g & WRONG_LETTER) {
color(LTGREY, WHITE, M_NOFILL);
} else {
color(BLACK, WHITE, M_NOFILL);
}
}
}
int kb_vert_offset = 15;
void erase_keyboard() {
color(WHITE, WHITE, SOLID);
box(0, kb_vert_offset*8-1, 160, 144, M_FILL);
}
void draw_keyboard(uint8_t x, uint8_t y) {
for(uint8_t i=0; i < 3; i++) {
gotogxy(x, y + i);
const char* k = kb[i];
char letter;
while ((letter = *k++)) {
set_color_for_letter(letter);
wrtchr(letter);
}
}
}
void highlight_key() {
uint8_t x = (kb_x * 16) + (kb_offsets[kb_y] * 8);
uint8_t y = (kb_vert_offset + kb_y) * 8;
color(BLACK, WHITE, M_NOFILL);
box(x, y-1, x+8, y+7, M_NOFILL);
}
void dehighlight_key() {
uint8_t x = (kb_x * 16) + (kb_offsets[kb_y] * 8);
uint8_t y = (kb_vert_offset + kb_y) * 8;
color(WHITE, WHITE, M_NOFILL);
box(x, y-1, x+8, y+7, M_NOFILL);
uint8_t gx = (kb_x * 2) + (kb_offsets[kb_y]);
uint8_t gy = (kb_vert_offset + kb_y);
gotogxy(gx, gy);
char letter = kb[kb_y][kb_offsets[kb_y]+ (kb_x*2)];
set_color_for_letter(letter);
wrtchr(letter);
}
char getletter() {
return kb[kb_y][kb_offsets[kb_y] + (kb_x*2)];
}
void show_answer() {
erase_keyboard();
const uint8_t line = 2 + (6 * 2);
uint8_t x = 5;
for(uint8_t i=0; i < 5; i++) {
color(BLACK, WHITE, M_NOFILL);
gotogxy(x, line);
wrtchr(word[i]);
x += 2;
}
waitpad(J_START | J_A);
reset();
}
void render_guess(uint8_t final) {
// first box is at 5, 2
uint8_t line = 2 + (guess_nr * 2);
uint8_t x = 5;
for(uint8_t i=0; i < 5; i++) {
color(BLACK, final ? LTGREY : WHITE, M_NOFILL);
gotogxy(x, line);
if(guess[i] != 0) {
wrtchr(guess[i]);
} else {
wrtchr(' ');
}
x += 2;
}
}
void draw_hard() {
color(WHITE, DKGREY, M_FILL);
gotogxy(19,17);
wrtchr(hard ? 'H' : 'E');
}
void draw_board() {
for(uint8_t i=0; i < 6; i++) {
char *g = NULL;
uint8_t *e = NULL;
if(i < guess_nr) {
g = guesses[i];
e = evals[i];
}
draw_word_rect(40, 16+(i*16), g, e);
}
}
void show_win() {
erase_keyboard();
gotogxy(5, 14);
color(BLACK, WHITE, M_NOFILL);
gprint("You won!!!");
gotogxy(3, 16);
wrtchr('0'+guess_nr);
gprint("/6 - Congrats!");
waitpad(J_START | J_A);
reset();
}
void run_fiver(void)
{
strcpy(word, "EMPTY");
uint8_t has_random = 0;
guess_nr = 0;
memset(guess, 0, sizeof(guess));
memset(guessed, 0, sizeof(guessed));
memset(guesses, 0, sizeof(guesses));
memset(evals, 0, sizeof(evals));
for(uint8_t i=0; i < 6; i++) {
draw_word_rect(40, 16+(i*16), NULL, NULL);
}
gotogxy(2, 0);
gprint("Game Boy FIVER");
draw_keyboard(0, kb_vert_offset);
draw_hard();
while (joypad());
color(LTGREY, WHITE, M_NOFILL);
highlight_key();
while(1) {
uint8_t j = joypad();
switch(j) {
case J_RIGHT:
dehighlight_key();
kb_x += 1;
if(kb_x >= kb_coords[kb_y]) {
kb_x = 0;
}
highlight_key();
waitpaduprepeat();
break;
case J_LEFT:
dehighlight_key();
if (kb_x == 0) {
kb_x = kb_coords[kb_y] - 1;
}
else {
kb_x -= 1;
}
highlight_key();
waitpaduprepeat();
break;
case J_UP:
dehighlight_key();
if (kb_y == 0) {
kb_y = 2;
}
else {
kb_y -= 1;
}
if(kb_x >= kb_coords[kb_y]) {
kb_x = kb_coords[kb_y] - 1;
}
highlight_key();
waitpaduprepeat();
break;
case J_DOWN:
dehighlight_key();
kb_y += 1;
if(kb_y > 2) {
kb_y = 0;
}
if(kb_x >= kb_coords[kb_y]) {
kb_x = kb_coords[kb_y] - 1;
}
highlight_key();
waitpaduprepeat();
break;
case J_SELECT:
hard = !hard;
draw_hard();
waitpaduprepeat();
break;
case J_START: {
if(strlen(guess) != 5) break;
render_guess(1);
uint8_t valid = 1;
uint16_t start = sys_time;
evaluate_letters(guess, evals[guess_nr]);
if(hard) {
uint8_t i;
for (i=0; i<guess_nr; i++)
if (!validate_hard(guesses[i], evals[i], guess, evals[guess_nr])) {
valid = 0;
break;
}
}
valid = valid && filterWord(guess);
while ((uint16_t)(sys_time-start) < FLASH_DELAY) ;
if (!valid) {
guess[4] = 0;
render_guess(0);
break;
}
strcpy(guesses[guess_nr], guess);
guess_nr += 1;
draw_board();
draw_keyboard(0, kb_vert_offset);
highlight_key();
if(strcmp(word, guess) == 0) {
show_win();
return;
break;
}
if(guess_nr == 6) {
show_answer();
return;
break;
}
// empty guess
memset(guess, 0, 5);
// TODO
break;
}
case J_A:
if(strlen(guess) == 5) break;
guess[strlen(guess)] = getletter();
render_guess(0);
if((has_random == 0)) {
if (! seeded) {
initrand((uint16_t)LY_REG | ((uint16_t)DIV_REG << 8));
seeded = 1;
}
uint16_t r;
do {
r = randw() & (NUM_ANSWERS_ROUNDED_UP_POW2-1);
}
while(r >= NUM_ANSWERS);
getSpecialWord(r, word);
has_random = 1;
}
waitpaduprepeat();
break;
case J_B:
if(strlen(guess) == 0) break;
guess[strlen(guess)-1] = 0;
render_guess(0);
waitpaduprepeat();
break;
default:
break;
}
wait_vbl_done();
}
}
void main() {
while(1) {
run_fiver();
}
}