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fix logic: don't add tiles if nothing moved

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This commit is contained in:
Aaron Bulmahn 2014-04-17 22:07:32 +02:00
parent f25b57e018
commit 267678ed02
2 changed files with 56 additions and 31 deletions
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43
2048_curses.c
View File

@ -28,13 +28,11 @@
free(ptr);\ free(ptr);\
} while (0) } while (0)
/* Define a sequence that should be executed each turn */ /* should be executed each turn */
#define TURN(x)\ #define TURN(x)\
do {\ gravitate(x) +\
gravitate(x);\ merge(x) +\
merge(x);\ gravitate(x)
gravitate(x);\
} while (0)
/* maximum length of any value in grid, for printing */ /* maximum length of any value in grid, for printing */
int MAXVAL; int MAXVAL;
@ -59,8 +57,9 @@ int hs;
char *file; char *file;
/* Merges adjacent squares of the same value together in a certain direction */ /* Merges adjacent squares of the same value together in a certain direction */
void merge(int d) int merge(int d)
{ {
int moved = 0;
if (d == DL) { if (d == DL) {
int i, j; int i, j;
for (i = 0; i < SZ; i++) { for (i = 0; i < SZ; i++) {
@ -70,6 +69,7 @@ void merge(int d)
sl += g[i][j]; sl += g[i][j];
s += g[i][j]; s += g[i][j];
g[i][j++ + 1] = 0; g[i][j++ + 1] = 0;
moved = 1;
} }
} }
} }
@ -83,6 +83,7 @@ void merge(int d)
sl += g[j][i]; sl += g[j][i];
s += g[j][i]; s += g[j][i];
g[j++ + 1][i] = 0; g[j++ + 1][i] = 0;
moved = 1;
} }
} }
} }
@ -96,6 +97,7 @@ void merge(int d)
sl += g[i][j]; sl += g[i][j];
s += g[i][j]; s += g[i][j];
g[i][j-- - 1] = 0; g[i][j-- - 1] = 0;
moved = 1;
} }
} }
} }
@ -109,18 +111,21 @@ void merge(int d)
sl += g[j][i]; sl += g[j][i];
s += g[j][i]; s += g[j][i];
g[j-- - 1][i] = 0; g[j-- - 1][i] = 0;
moved = 1;
} }
} }
} }
} }
return moved;
} }
/* move all values in the grid to the edge given by the direction pressed */ /* move all values in the grid to the edge given by the direction pressed */
/* would be nice to generalize this code a little so didn't need four loops */ /* would be nice to generalize this code a little so didn't need four loops */
/* if animations are wanted, then need to alter this so it moves each square one at a time */ /* if animations are wanted, then need to alter this so it moves each square one at a time */
void gravitate(int d) int gravitate(int d)
{ {
int moved = 0;
if (d == DL) { if (d == DL) {
int i, j; int i, j;
for (i = 0; i < SZ; i++) { for (i = 0; i < SZ; i++) {
@ -131,6 +136,7 @@ void gravitate(int d)
if (j + st < SZ) { if (j + st < SZ) {
g[i][j] = g[i][j + st]; g[i][j] = g[i][j + st];
g[i][j + st] = 0; g[i][j + st] = 0;
moved = 1;
} }
} }
} }
@ -145,6 +151,7 @@ void gravitate(int d)
if (j + st < SZ) { if (j + st < SZ) {
g[j][i] = g[j + st][i]; g[j][i] = g[j + st][i];
g[j + st][i] = 0; g[j + st][i] = 0;
moved = 1;
} }
} }
} }
@ -159,6 +166,7 @@ void gravitate(int d)
if (j - st >= 0) { if (j - st >= 0) {
g[i][j] = g[i][j - st]; g[i][j] = g[i][j - st];
g[i][j - st] = 0; g[i][j - st] = 0;
moved = 1;
} }
} }
} }
@ -173,10 +181,12 @@ void gravitate(int d)
if (j - st >= 0) { if (j - st >= 0) {
g[j][i] = g[j - st][i]; g[j][i] = g[j - st][i];
g[j - st][i] = 0; g[j - st][i] = 0;
moved = 1;
} }
} }
} }
} }
return moved;
} }
/* load hiscore */ /* load hiscore */
@ -355,10 +365,11 @@ int main(int argc, char **argv)
ITER(2, rand_block()); ITER(2, rand_block());
draw_grid(gamewin); draw_grid(gamewin);
int key; int key, moved;
while (1) { while (1) {
/* will goto this if we didn't get a valid keypress */ /* will goto this if we didn't get a valid keypress */
retry:; retry:;
moved = 0;
key = wgetch(gamewin); key = wgetch(gamewin);
sl = 0; sl = 0;
@ -367,22 +378,22 @@ int main(int argc, char **argv)
case 'h': case 'h':
case 'a': case 'a':
case KEY_LEFT: case KEY_LEFT:
TURN(DL); moved = TURN(DL);
break; break;
case 'l': case 'l':
case 'd': case 'd':
case KEY_RIGHT: case KEY_RIGHT:
TURN(DR); moved = TURN(DR);
break; break;
case 'j': case 'j':
case 's': case 's':
case KEY_DOWN: case KEY_DOWN:
TURN(DD); moved = TURN(DD);
break; break;
case 'k': case 'k':
case 'w': case 'w':
case KEY_UP: case KEY_UP:
TURN(DU); moved = TURN(DU);
break; break;
case 'q': case 'q':
FREE2D(g, SZ); FREE2D(g, SZ);
@ -395,7 +406,9 @@ int main(int argc, char **argv)
goto retry; goto retry;
} }
ITER(n_blocks, rand_block()); if (moved) {
draw_grid(gamewin); ITER(n_blocks, rand_block());
draw_grid(gamewin);
}
} }
} }

44
2048_no_curses.c
View File

@ -33,11 +33,9 @@
/* Define a sequence that should be executed each turn */ /* Define a sequence that should be executed each turn */
#define TURN(x)\ #define TURN(x)\
do {\ gravitate(x) +\
gravitate(x);\ merge(x) +\
merge(x);\ gravitate(x)
gravitate(x);\
} while (0)
/* direction enumeration */ /* direction enumeration */
enum {DR, DU, DL, DD}; enum {DR, DU, DL, DD};
@ -59,8 +57,9 @@ int hs;
char *file; char *file;
/* Merges adjacent squares of the same value together in a certain direction */ /* Merges adjacent squares of the same value together in a certain direction */
void merge(int d) int merge(int d)
{ {
int moved = 0;
if (d == DL) { if (d == DL) {
int i, j; int i, j;
for (i = 0; i < SZ; i++) { for (i = 0; i < SZ; i++) {
@ -70,6 +69,7 @@ void merge(int d)
sl += g[i][j]; sl += g[i][j];
s += g[i][j]; s += g[i][j];
g[i][j++ + 1] = 0; g[i][j++ + 1] = 0;
moved = 1;
} }
} }
} }
@ -83,6 +83,7 @@ void merge(int d)
sl += g[j][i]; sl += g[j][i];
s += g[j][i]; s += g[j][i];
g[j++ + 1][i] = 0; g[j++ + 1][i] = 0;
moved = 1;
} }
} }
} }
@ -96,6 +97,7 @@ void merge(int d)
sl += g[i][j]; sl += g[i][j];
s += g[i][j]; s += g[i][j];
g[i][j-- - 1] = 0; g[i][j-- - 1] = 0;
moved = 1;
} }
} }
} }
@ -109,17 +111,20 @@ void merge(int d)
sl += g[j][i]; sl += g[j][i];
s += g[j][i]; s += g[j][i];
g[j-- - 1][i] = 0; g[j-- - 1][i] = 0;
moved = 1;
} }
} }
} }
} }
return moved;
} }
/* move all values in the grid to the edge given by the direction pressed */ /* move all values in the grid to the edge given by the direction pressed */
/* would be nice to generalize this code a little so didn't need four loops */ /* would be nice to generalize this code a little so didn't need four loops */
void gravitate(int d) int gravitate(int d)
{ {
int moved = 0;
if (d == DL) { if (d == DL) {
int i, j; int i, j;
for (i = 0; i < SZ; i++) { for (i = 0; i < SZ; i++) {
@ -130,6 +135,7 @@ void gravitate(int d)
if (j + st < SZ) { if (j + st < SZ) {
g[i][j] = g[i][j + st]; g[i][j] = g[i][j + st];
g[i][j + st] = 0; g[i][j + st] = 0;
moved = 1;
} }
} }
} }
@ -144,6 +150,7 @@ void gravitate(int d)
if (j + st < SZ) { if (j + st < SZ) {
g[j][i] = g[j + st][i]; g[j][i] = g[j + st][i];
g[j + st][i] = 0; g[j + st][i] = 0;
moved = 1;
} }
} }
} }
@ -158,6 +165,7 @@ void gravitate(int d)
if (j - st >= 0) { if (j - st >= 0) {
g[i][j] = g[i][j - st]; g[i][j] = g[i][j - st];
g[i][j - st] = 0; g[i][j - st] = 0;
moved = 1;
} }
} }
} }
@ -172,10 +180,12 @@ void gravitate(int d)
if (j - st >= 0) { if (j - st >= 0) {
g[j][i] = g[j - st][i]; g[j][i] = g[j - st][i];
g[j - st][i] = 0; g[j - st][i] = 0;
moved = 1;
} }
} }
} }
} }
return moved;
} }
/* loads hiscore */ /* loads hiscore */
@ -328,11 +338,11 @@ int main(int argc, char **argv)
tattr.c_lflag &= ~(ICANON | ECHO); tattr.c_lflag &= ~(ICANON | ECHO);
tcsetattr(STDOUT_FILENO, TCSANOW, &tattr); tcsetattr(STDOUT_FILENO, TCSANOW, &tattr);
int key; int key, moved;
while (1) { while (1) {
/* will goto this if we didn't get a valid keypress */ /* will goto this if we didn't get a valid keypress */
retry:; retry:;
moved = 0;
key = getchar(); key = getchar();
sl = 0; sl = 0;
@ -340,19 +350,19 @@ int main(int argc, char **argv)
switch (key) { switch (key) {
case 'h': case 'h':
case 'a': case 'a':
TURN(DL); moved = TURN(DL);
break; break;
case 'l': case 'l':
case 'd': case 'd':
TURN(DR); moved = TURN(DR);
break; break;
case 'j': case 'j':
case 's': case 's':
TURN(DD); moved = TURN(DD);
break; break;
case 'k': case 'k':
case 'w': case 'w':
TURN(DU); moved = TURN(DU);
break; break;
case 'q': case 'q':
save_score(); save_score();
@ -361,7 +371,9 @@ int main(int argc, char **argv)
goto retry; goto retry;
} }
ITER(n_blocks, rand_block()); if (moved) {
draw_grid(); ITER(n_blocks, rand_block());
draw_grid();
}
} }
} }