mirror of
git://git.tartarus.org/simon/puzzles.git
synced 2025-04-21 16:05:44 -07:00
Files
cc54553226
functions and a couple of variables, now each one exports a single structure containing a load of function pointers and said variables. This should make it easy to support platforms on which it's sensible to compile all the puzzles into a single monolithic application. The two existing platforms are still one-binary-per-game. [originally from svn r5126]
474 lines
12 KiB
C
474 lines
12 KiB
C
/*
|
|
* midend.c: general middle fragment sitting between the
|
|
* platform-specific front end and game-specific back end.
|
|
* Maintains a move list, takes care of Undo and Redo commands, and
|
|
* processes standard keystrokes for undo/redo/new/restart/quit.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
|
|
#include "puzzles.h"
|
|
|
|
struct midend_data {
|
|
frontend *frontend;
|
|
random_state *random;
|
|
const game *ourgame;
|
|
|
|
char *seed;
|
|
int fresh_seed;
|
|
int nstates, statesize, statepos;
|
|
|
|
game_params **presets;
|
|
char **preset_names;
|
|
int npresets, presetsize;
|
|
|
|
game_params *params;
|
|
game_state **states;
|
|
game_drawstate *drawstate;
|
|
game_state *oldstate;
|
|
game_ui *ui;
|
|
float anim_time, anim_pos;
|
|
float flash_time, flash_pos;
|
|
int dir;
|
|
};
|
|
|
|
#define ensure(me) do { \
|
|
if ((me)->nstates >= (me)->statesize) { \
|
|
(me)->statesize = (me)->nstates + 128; \
|
|
(me)->states = sresize((me)->states, (me)->statesize, game_state *); \
|
|
} \
|
|
} while (0)
|
|
|
|
midend_data *midend_new(frontend *fe, const game *ourgame)
|
|
{
|
|
midend_data *me = snew(midend_data);
|
|
void *randseed;
|
|
int randseedsize;
|
|
|
|
get_random_seed(&randseed, &randseedsize);
|
|
|
|
me->frontend = fe;
|
|
me->ourgame = ourgame;
|
|
me->random = random_init(randseed, randseedsize);
|
|
me->nstates = me->statesize = me->statepos = 0;
|
|
me->states = NULL;
|
|
me->params = ourgame->default_params();
|
|
me->seed = NULL;
|
|
me->fresh_seed = FALSE;
|
|
me->drawstate = NULL;
|
|
me->oldstate = NULL;
|
|
me->presets = NULL;
|
|
me->preset_names = NULL;
|
|
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;
|
|
|
|
sfree(randseed);
|
|
|
|
return me;
|
|
}
|
|
|
|
void midend_free(midend_data *me)
|
|
{
|
|
sfree(me->states);
|
|
sfree(me->seed);
|
|
me->ourgame->free_params(me->params);
|
|
sfree(me);
|
|
}
|
|
|
|
void midend_size(midend_data *me, int *x, int *y)
|
|
{
|
|
me->ourgame->size(me->params, x, y);
|
|
}
|
|
|
|
void midend_set_params(midend_data *me, game_params *params)
|
|
{
|
|
me->ourgame->free_params(me->params);
|
|
me->params = me->ourgame->dup_params(params);
|
|
}
|
|
|
|
void midend_new_game(midend_data *me)
|
|
{
|
|
while (me->nstates > 0)
|
|
me->ourgame->free_game(me->states[--me->nstates]);
|
|
|
|
if (me->drawstate)
|
|
me->ourgame->free_drawstate(me->drawstate);
|
|
|
|
assert(me->nstates == 0);
|
|
|
|
if (!me->fresh_seed) {
|
|
sfree(me->seed);
|
|
me->seed = me->ourgame->new_seed(me->params, me->random);
|
|
} else
|
|
me->fresh_seed = FALSE;
|
|
|
|
ensure(me);
|
|
me->states[me->nstates++] = me->ourgame->new_game(me->params, me->seed);
|
|
me->statepos = 1;
|
|
me->drawstate = me->ourgame->new_drawstate(me->states[0]);
|
|
if (me->ui)
|
|
me->ourgame->free_ui(me->ui);
|
|
me->ui = me->ourgame->new_ui(me->states[0]);
|
|
}
|
|
|
|
void midend_restart_game(midend_data *me)
|
|
{
|
|
while (me->nstates > 1)
|
|
me->ourgame->free_game(me->states[--me->nstates]);
|
|
me->statepos = me->nstates;
|
|
me->ourgame->free_ui(me->ui);
|
|
me->ui = me->ourgame->new_ui(me->states[0]);
|
|
}
|
|
|
|
static int midend_undo(midend_data *me)
|
|
{
|
|
if (me->statepos > 1) {
|
|
me->statepos--;
|
|
me->dir = -1;
|
|
return 1;
|
|
} else
|
|
return 0;
|
|
}
|
|
|
|
static int midend_redo(midend_data *me)
|
|
{
|
|
if (me->statepos < me->nstates) {
|
|
me->statepos++;
|
|
me->dir = +1;
|
|
return 1;
|
|
} else
|
|
return 0;
|
|
}
|
|
|
|
static void midend_finish_move(midend_data *me)
|
|
{
|
|
float flashtime;
|
|
|
|
if (me->oldstate || me->statepos > 1) {
|
|
flashtime = me->ourgame->flash_length(me->oldstate ? me->oldstate :
|
|
me->states[me->statepos-2],
|
|
me->states[me->statepos-1],
|
|
me->oldstate ? me->dir : +1);
|
|
if (flashtime > 0) {
|
|
me->flash_pos = 0.0F;
|
|
me->flash_time = flashtime;
|
|
}
|
|
}
|
|
|
|
if (me->oldstate)
|
|
me->ourgame->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);
|
|
else
|
|
activate_timer(me->frontend);
|
|
}
|
|
|
|
static void midend_stop_anim(midend_data *me)
|
|
{
|
|
if (me->oldstate || me->anim_time) {
|
|
midend_finish_move(me);
|
|
midend_redraw(me);
|
|
}
|
|
}
|
|
|
|
int midend_process_key(midend_data *me, int x, int y, int button)
|
|
{
|
|
game_state *oldstate = me->ourgame->dup_game(me->states[me->statepos - 1]);
|
|
float anim_time;
|
|
|
|
if (button == 'n' || button == 'N' || button == '\x0E') {
|
|
midend_stop_anim(me);
|
|
midend_new_game(me);
|
|
midend_redraw(me);
|
|
return 1; /* never animate */
|
|
} else if (button == 'r' || button == 'R') {
|
|
midend_stop_anim(me);
|
|
midend_restart_game(me);
|
|
midend_redraw(me);
|
|
return 1; /* never animate */
|
|
} else if (button == 'u' || button == 'u' ||
|
|
button == '\x1A' || button == '\x1F') {
|
|
midend_stop_anim(me);
|
|
if (!midend_undo(me))
|
|
return 1;
|
|
} else if (button == '\x12') {
|
|
midend_stop_anim(me);
|
|
if (!midend_redo(me))
|
|
return 1;
|
|
} else if (button == 'q' || button == 'Q' || button == '\x11') {
|
|
me->ourgame->free_game(oldstate);
|
|
return 0;
|
|
} else {
|
|
game_state *s = me->ourgame->make_move(me->states[me->statepos-1],
|
|
me->ui, x, y, button);
|
|
|
|
if (s == me->states[me->statepos-1]) {
|
|
/*
|
|
* make_move() is allowed to return its input state to
|
|
* indicate that although no move has been made, the UI
|
|
* state has been updated and a redraw is called for.
|
|
*/
|
|
midend_redraw(me);
|
|
return 1;
|
|
} else if (s) {
|
|
midend_stop_anim(me);
|
|
while (me->nstates > me->statepos)
|
|
me->ourgame->free_game(me->states[--me->nstates]);
|
|
ensure(me);
|
|
me->states[me->nstates] = s;
|
|
me->statepos = ++me->nstates;
|
|
me->dir = +1;
|
|
} else {
|
|
me->ourgame->free_game(oldstate);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* See if this move requires an animation.
|
|
*/
|
|
anim_time = me->ourgame->anim_length(oldstate, me->states[me->statepos-1],
|
|
me->dir);
|
|
|
|
me->oldstate = oldstate;
|
|
if (anim_time > 0) {
|
|
me->anim_time = anim_time;
|
|
} else {
|
|
me->anim_time = 0.0;
|
|
midend_finish_move(me);
|
|
}
|
|
me->anim_pos = 0.0;
|
|
|
|
midend_redraw(me);
|
|
|
|
activate_timer(me->frontend);
|
|
|
|
return 1;
|
|
}
|
|
|
|
void midend_redraw(midend_data *me)
|
|
{
|
|
if (me->statepos > 0 && me->drawstate) {
|
|
start_draw(me->frontend);
|
|
if (me->oldstate && me->anim_time > 0 &&
|
|
me->anim_pos < me->anim_time) {
|
|
assert(me->dir != 0);
|
|
me->ourgame->redraw(me->frontend, me->drawstate, me->oldstate,
|
|
me->states[me->statepos-1], me->dir,
|
|
me->ui, me->anim_pos, me->flash_pos);
|
|
} else {
|
|
me->ourgame->redraw(me->frontend, me->drawstate, NULL,
|
|
me->states[me->statepos-1], +1 /*shrug*/,
|
|
me->ui, 0.0, me->flash_pos);
|
|
}
|
|
end_draw(me->frontend);
|
|
}
|
|
}
|
|
|
|
void midend_timer(midend_data *me, float tplus)
|
|
{
|
|
me->anim_pos += tplus;
|
|
if (me->anim_pos >= me->anim_time ||
|
|
me->anim_time == 0 || !me->oldstate) {
|
|
if (me->anim_time > 0)
|
|
midend_finish_move(me);
|
|
}
|
|
me->flash_pos += tplus;
|
|
if (me->flash_pos >= me->flash_time || me->flash_time == 0) {
|
|
me->flash_pos = me->flash_time = 0;
|
|
}
|
|
if (me->flash_time == 0 && me->anim_time == 0)
|
|
deactivate_timer(me->frontend);
|
|
midend_redraw(me);
|
|
}
|
|
|
|
float *midend_colours(midend_data *me, int *ncolours)
|
|
{
|
|
game_state *state = NULL;
|
|
float *ret;
|
|
|
|
if (me->nstates == 0) {
|
|
char *seed = me->ourgame->new_seed(me->params, me->random);
|
|
state = me->ourgame->new_game(me->params, seed);
|
|
sfree(seed);
|
|
} else
|
|
state = me->states[0];
|
|
|
|
ret = me->ourgame->colours(me->frontend, state, ncolours);
|
|
|
|
if (me->nstates == 0)
|
|
me->ourgame->free_game(state);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int midend_num_presets(midend_data *me)
|
|
{
|
|
if (!me->npresets) {
|
|
char *name;
|
|
game_params *preset;
|
|
|
|
while (me->ourgame->fetch_preset(me->npresets, &name, &preset)) {
|
|
if (me->presetsize <= me->npresets) {
|
|
me->presetsize = me->npresets + 10;
|
|
me->presets = sresize(me->presets, me->presetsize,
|
|
game_params *);
|
|
me->preset_names = sresize(me->preset_names, me->presetsize,
|
|
char *);
|
|
}
|
|
|
|
me->presets[me->npresets] = preset;
|
|
me->preset_names[me->npresets] = name;
|
|
me->npresets++;
|
|
}
|
|
}
|
|
|
|
return me->npresets;
|
|
}
|
|
|
|
void midend_fetch_preset(midend_data *me, int n,
|
|
char **name, game_params **params)
|
|
{
|
|
assert(n >= 0 && n < me->npresets);
|
|
*name = me->preset_names[n];
|
|
*params = me->presets[n];
|
|
}
|
|
|
|
int midend_wants_statusbar(midend_data *me)
|
|
{
|
|
return me->ourgame->wants_statusbar();
|
|
}
|
|
|
|
config_item *midend_get_config(midend_data *me, int which, char **wintitle)
|
|
{
|
|
char *titlebuf, *parstr;
|
|
config_item *ret;
|
|
|
|
titlebuf = snewn(40 + strlen(me->ourgame->name), char);
|
|
|
|
switch (which) {
|
|
case CFG_SETTINGS:
|
|
sprintf(titlebuf, "%s configuration", me->ourgame->name);
|
|
*wintitle = dupstr(titlebuf);
|
|
return me->ourgame->configure(me->params);
|
|
case CFG_SEED:
|
|
sprintf(titlebuf, "%s game selection", me->ourgame->name);
|
|
*wintitle = dupstr(titlebuf);
|
|
|
|
ret = snewn(2, config_item);
|
|
|
|
ret[0].type = C_STRING;
|
|
ret[0].name = "Game ID";
|
|
ret[0].ival = 0;
|
|
/*
|
|
* The text going in here will be a string encoding of the
|
|
* parameters, plus a colon, plus the game seed. This is a
|
|
* full game ID.
|
|
*/
|
|
parstr = me->ourgame->encode_params(me->params);
|
|
ret[0].sval = snewn(strlen(parstr) + strlen(me->seed) + 2, char);
|
|
sprintf(ret[0].sval, "%s:%s", parstr, me->seed);
|
|
sfree(parstr);
|
|
|
|
ret[1].type = C_END;
|
|
ret[1].name = ret[1].sval = NULL;
|
|
ret[1].ival = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
assert(!"We shouldn't be here");
|
|
return NULL;
|
|
}
|
|
|
|
char *midend_game_id(midend_data *me, char *id, int def_seed)
|
|
{
|
|
char *error, *par, *seed;
|
|
game_params *params;
|
|
|
|
seed = strchr(id, ':');
|
|
|
|
if (seed) {
|
|
/*
|
|
* We have a colon separating parameters from game seed. So
|
|
* `par' now points to the parameters string, and `seed' to
|
|
* the seed string.
|
|
*/
|
|
*seed++ = '\0';
|
|
par = id;
|
|
} else {
|
|
/*
|
|
* We only have one string. Depending on `def_seed', we
|
|
* take it to be either parameters or seed.
|
|
*/
|
|
if (def_seed) {
|
|
seed = id;
|
|
par = NULL;
|
|
} else {
|
|
seed = NULL;
|
|
par = id;
|
|
}
|
|
}
|
|
|
|
if (par) {
|
|
params = me->ourgame->decode_params(par);
|
|
error = me->ourgame->validate_params(params);
|
|
if (error) {
|
|
me->ourgame->free_params(params);
|
|
return error;
|
|
}
|
|
me->ourgame->free_params(me->params);
|
|
me->params = params;
|
|
}
|
|
|
|
if (seed) {
|
|
error = me->ourgame->validate_seed(me->params, seed);
|
|
if (error)
|
|
return error;
|
|
|
|
sfree(me->seed);
|
|
me->seed = dupstr(seed);
|
|
me->fresh_seed = TRUE;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
char *midend_set_config(midend_data *me, int which, config_item *cfg)
|
|
{
|
|
char *error;
|
|
game_params *params;
|
|
|
|
switch (which) {
|
|
case CFG_SETTINGS:
|
|
params = me->ourgame->custom_params(cfg);
|
|
error = me->ourgame->validate_params(params);
|
|
|
|
if (error) {
|
|
me->ourgame->free_params(params);
|
|
return error;
|
|
}
|
|
|
|
me->ourgame->free_params(me->params);
|
|
me->params = params;
|
|
break;
|
|
|
|
case CFG_SEED:
|
|
error = midend_game_id(me, cfg[0].sval, TRUE);
|
|
if (error)
|
|
return error;
|
|
break;
|
|
}
|
|
|
|
return NULL;
|
|
}
|