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After discussion with Simon, the game redraw functions are now passed a new

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argument `dir' which tells them whether this redraw is due to an undo, rather
than have them second-guess it from game state.
Note that none of the actual games yet take advantage of this; so it hasn't
been tested in anger (although it has been inspected by debugging).

[originally from svn r4469]
This commit is contained in:
Jacob Nevins
2004-08-16 16:29:54 +00:00
parent f1e8a586b5
commit daac529a9e
10 changed files with 43 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
HACKING.but
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@ -166,7 +166,8 @@ chronological order, the second one contains the direction field
which corresponds to the actual difference between the states.
However, when it is passed a pair of states in the opposite order
due to an undo, it should be looking in the \e{first} one to find
the direction field. Sixteen solves this by also storing the current
move count in the game state, so that \cw{game_redraw()} can compare
the two move counts to work out whether it's drawing an undo or not,
and look in the right place for the direction field.
the direction field.
For this reason, in the redraw functions you are provided with an
extra argument \c{dir} which tells you which state was chronologically
first; \c{dir} is +1 for a normal move and -1 for an undo.

6
cube.c
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@ -1351,7 +1351,7 @@ void game_free_drawstate(game_drawstate *ds)
}
void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
game_state *state, game_ui *ui,
game_state *state, int dir, game_ui *ui,
float animtime, float flashtime)
{
int i, j;
@ -1510,12 +1510,12 @@ void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
}
}
float game_anim_length(game_state *oldstate, game_state *newstate)
float game_anim_length(game_state *oldstate, game_state *newstate, int dir)
{
return ROLLTIME;
}
float game_flash_length(game_state *oldstate, game_state *newstate)
float game_flash_length(game_state *oldstate, game_state *newstate, int dir)
{
return 0.0F;
}

6
fifteen.c
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@ -553,7 +553,7 @@ static void draw_tile(frontend *fe, game_state *state, int x, int y,
}
void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
game_state *state, game_ui *ui,
game_state *state, int dir, game_ui *ui,
float animtime, float flashtime)
{
int i, pass, bgcolour;
@ -702,12 +702,12 @@ void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
}
}
float game_anim_length(game_state *oldstate, game_state *newstate)
float game_anim_length(game_state *oldstate, game_state *newstate, int dir)
{
return ANIM_TIME;
}
float game_flash_length(game_state *oldstate, game_state *newstate)
float game_flash_length(game_state *oldstate, game_state *newstate, int dir)
{
if (!oldstate->completed && newstate->completed)
return 2 * FLASH_FRAME;

20
midend.c
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@ -30,6 +30,7 @@ struct midend_data {
game_ui *ui;
float anim_time, anim_pos;
float flash_time, flash_pos;
int dir;
};
#define ensure(me) do { \
@ -57,6 +58,7 @@ midend_data *midend_new(frontend *fe, void *randseed, int randseedsize)
me->npresets = me->presetsize = 0;
me->anim_time = me->anim_pos = 0.0F;
me->flash_time = me->flash_pos = 0.0F;
me->dir = 0;
me->ui = NULL;
return me;
@ -119,6 +121,7 @@ static int midend_undo(midend_data *me)
{
if (me->statepos > 1) {
me->statepos--;
me->dir = -1;
return 1;
} else
return 0;
@ -128,6 +131,7 @@ static int midend_redo(midend_data *me)
{
if (me->statepos < me->nstates) {
me->statepos++;
me->dir = +1;
return 1;
} else
return 0;
@ -140,7 +144,8 @@ static void midend_finish_move(midend_data *me)
if (me->oldstate || me->statepos > 1) {
flashtime = game_flash_length(me->oldstate ? me->oldstate :
me->states[me->statepos-2],
me->states[me->statepos-1]);
me->states[me->statepos-1],
me->oldstate ? me->dir : +1);
if (flashtime > 0) {
me->flash_pos = 0.0F;
me->flash_time = flashtime;
@ -151,6 +156,7 @@ static void midend_finish_move(midend_data *me)
free_game(me->oldstate);
me->oldstate = NULL;
me->anim_pos = me->anim_time = 0;
me->dir = 0;
if (me->flash_time == 0 && me->anim_time == 0)
deactivate_timer(me->frontend);
@ -212,6 +218,7 @@ int midend_process_key(midend_data *me, int x, int y, int button)
ensure(me);
me->states[me->nstates] = s;
me->statepos = ++me->nstates;
me->dir = +1;
} else {
free_game(oldstate);
return 1;
@ -221,7 +228,7 @@ int midend_process_key(midend_data *me, int x, int y, int button)
/*
* See if this move requires an animation.
*/
anim_time = game_anim_length(oldstate, me->states[me->statepos-1]);
anim_time = game_anim_length(oldstate, me->states[me->statepos-1], me->dir);
me->oldstate = oldstate;
if (anim_time > 0) {
@ -245,13 +252,14 @@ void midend_redraw(midend_data *me)
start_draw(me->frontend);
if (me->oldstate && me->anim_time > 0 &&
me->anim_pos < me->anim_time) {
assert(me->dir != 0);
game_redraw(me->frontend, me->drawstate, me->oldstate,
me->states[me->statepos-1], me->ui, me->anim_pos,
me->flash_pos);
me->states[me->statepos-1], me->dir,
me->ui, me->anim_pos, me->flash_pos);
} else {
game_redraw(me->frontend, me->drawstate, NULL,
me->states[me->statepos-1], me->ui, 0.0,
me->flash_pos);
me->states[me->statepos-1], +1 /*shrug*/,
me->ui, 0.0, me->flash_pos);
}
end_draw(me->frontend);
}

6
net.c
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@ -1251,7 +1251,7 @@ static void draw_tile(frontend *fe, game_state *state, int x, int y, int tile,
}
void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
game_state *state, game_ui *ui, float t, float ft)
game_state *state, int dir, game_ui *ui, float t, float ft)
{
int x, y, tx, ty, frame;
unsigned char *active;
@ -1404,7 +1404,7 @@ void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
sfree(active);
}
float game_anim_length(game_state *oldstate, game_state *newstate)
float game_anim_length(game_state *oldstate, game_state *newstate, int dir)
{
int x, y;
@ -1421,7 +1421,7 @@ float game_anim_length(game_state *oldstate, game_state *newstate)
return 0.0F;
}
float game_flash_length(game_state *oldstate, game_state *newstate)
float game_flash_length(game_state *oldstate, game_state *newstate, int dir)
{
/*
* If the game has just been completed, we display a completion

6
netslide.c
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@ -1287,7 +1287,7 @@ static void draw_arrow(frontend *fe, int x, int y, int xdx, int xdy)
}
void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
game_state *state, game_ui *ui, float t, float ft)
game_state *state, int dir, game_ui *ui, float t, float ft)
{
int x, y, tx, ty, frame;
unsigned char *active;
@ -1481,12 +1481,12 @@ void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
sfree(active);
}
float game_anim_length(game_state *oldstate, game_state *newstate)
float game_anim_length(game_state *oldstate, game_state *newstate, int dir)
{
return ANIM_TIME;
}
float game_flash_length(game_state *oldstate, game_state *newstate)
float game_flash_length(game_state *oldstate, game_state *newstate, int dir)
{
/*
* If the game has just been completed, we display a completion

6
nullgame.c
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@ -177,7 +177,7 @@ void game_free_drawstate(game_drawstate *ds)
}
void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
game_state *state, game_ui *ui,
game_state *state, int dir, game_ui *ui,
float animtime, float flashtime)
{
/*
@ -189,12 +189,12 @@ void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
draw_rect(fe, 0, 0, 200, 200, COL_BACKGROUND);
}
float game_anim_length(game_state *oldstate, game_state *newstate)
float game_anim_length(game_state *oldstate, game_state *newstate, int dir)
{
return 0.0F;
}
float game_flash_length(game_state *oldstate, game_state *newstate)
float game_flash_length(game_state *oldstate, game_state *newstate, int dir)
{
return 0.0F;
}

6
puzzles.h
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@ -184,10 +184,10 @@ float *game_colours(frontend *fe, game_state *state, int *ncolours);
game_drawstate *game_new_drawstate(game_state *state);
void game_free_drawstate(game_drawstate *ds);
void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
game_state *newstate, game_ui *ui, float anim_time,
game_state *newstate, int dir, game_ui *ui, float anim_time,
float flash_time);
float game_anim_length(game_state *oldstate, game_state *newstate);
float game_flash_length(game_state *oldstate, game_state *newstate);
float game_anim_length(game_state *oldstate, game_state *newstate, int dir);
float game_flash_length(game_state *oldstate, game_state *newstate, int dir);
int game_wants_statusbar(void);
#endif /* PUZZLES_PUZZLES_H */

6
rect.c
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@ -1482,7 +1482,7 @@ void draw_tile(frontend *fe, game_state *state, int x, int y,
}
void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
game_state *state, game_ui *ui,
game_state *state, int dir, game_ui *ui,
float animtime, float flashtime)
{
int x, y;
@ -1573,12 +1573,12 @@ void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
sfree(correct);
}
float game_anim_length(game_state *oldstate, game_state *newstate)
float game_anim_length(game_state *oldstate, game_state *newstate, int dir)
{
return 0.0F;
}
float game_flash_length(game_state *oldstate, game_state *newstate)
float game_flash_length(game_state *oldstate, game_state *newstate, int dir)
{
if (!oldstate->completed && newstate->completed)
return FLASH_TIME;

6
sixteen.c
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@ -575,7 +575,7 @@ static void draw_arrow(frontend *fe, int x, int y, int xdx, int xdy)
}
void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
game_state *state, game_ui *ui,
game_state *state, int dir, game_ui *ui,
float animtime, float flashtime)
{
int i, bgcolour;
@ -750,12 +750,12 @@ void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
}
}
float game_anim_length(game_state *oldstate, game_state *newstate)
float game_anim_length(game_state *oldstate, game_state *newstate, int dir)
{
return ANIM_TIME;
}
float game_flash_length(game_state *oldstate, game_state *newstate)
float game_flash_length(game_state *oldstate, game_state *newstate, int dir)
{
if (!oldstate->completed && newstate->completed)
return 2 * FLASH_FRAME;