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Files
b74dac6de2
unpleasant and requiring lots of special cases to be taken care of by every single game. The new interface exposes an integer `tile size' or `scale' parameter to the midend and provides two much simpler routines: one which computes the pixel window size given a game_params and a tile size, and one which is given a tile size and must set up a drawstate appropriately. All the rest of the complexity is handled in the midend, mostly by binary search, so grubby special cases only have to be dealt with once. [originally from svn r6059]
321 lines
11 KiB
C
321 lines
11 KiB
C
/*
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* puzzles.h: header file for my puzzle collection
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*/
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#ifndef PUZZLES_PUZZLES_H
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#define PUZZLES_PUZZLES_H
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#include <stdlib.h> /* for size_t */
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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#define PI 3.141592653589793238462643383279502884197169399
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#define lenof(array) ( sizeof(array) / sizeof(*(array)) )
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#define STR_INT(x) #x
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#define STR(x) STR_INT(x)
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/* NB not perfect because they evaluate arguments multiple times. */
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#ifndef max
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#define max(x,y) ( (x)>(y) ? (x) : (y) )
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#endif /* max */
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#ifndef min
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#define min(x,y) ( (x)<(y) ? (x) : (y) )
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#endif /* min */
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enum {
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LEFT_BUTTON = 0x0200,
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MIDDLE_BUTTON,
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RIGHT_BUTTON,
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LEFT_DRAG,
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MIDDLE_DRAG,
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RIGHT_DRAG,
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LEFT_RELEASE,
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MIDDLE_RELEASE,
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RIGHT_RELEASE,
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CURSOR_UP,
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CURSOR_DOWN,
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CURSOR_LEFT,
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CURSOR_RIGHT,
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CURSOR_SELECT,
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/* made smaller because of 'limited range of datatype' errors. */
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MOD_CTRL = 0x1000,
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MOD_SHFT = 0x2000,
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MOD_NUM_KEYPAD = 0x4000,
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MOD_MASK = 0x7000 /* mask for all modifiers */
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};
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#define IS_MOUSE_DOWN(m) ( (unsigned)((m) - LEFT_BUTTON) <= \
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(unsigned)(RIGHT_BUTTON - LEFT_BUTTON))
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#define IS_MOUSE_DRAG(m) ( (unsigned)((m) - LEFT_DRAG) <= \
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(unsigned)(RIGHT_DRAG - LEFT_DRAG))
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#define IS_MOUSE_RELEASE(m) ( (unsigned)((m) - LEFT_RELEASE) <= \
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(unsigned)(RIGHT_RELEASE - LEFT_RELEASE))
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/* Bit flags indicating mouse button priorities */
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#define BUTTON_BEATS(x,y) ( 1 << (((x)-LEFT_BUTTON)*3+(y)-LEFT_BUTTON) )
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#define IGNOREARG(x) ( (x) = (x) )
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typedef struct frontend frontend;
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typedef struct config_item config_item;
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typedef struct midend_data midend_data;
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typedef struct random_state random_state;
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typedef struct game_params game_params;
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typedef struct game_state game_state;
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typedef struct game_ui game_ui;
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typedef struct game_drawstate game_drawstate;
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typedef struct game game;
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typedef struct blitter blitter;
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#define ALIGN_VNORMAL 0x000
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#define ALIGN_VCENTRE 0x100
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#define ALIGN_HLEFT 0x000
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#define ALIGN_HCENTRE 0x001
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#define ALIGN_HRIGHT 0x002
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#define FONT_FIXED 0
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#define FONT_VARIABLE 1
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/*
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* Structure used to pass configuration data between frontend and
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* game
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*/
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enum { C_STRING, C_CHOICES, C_BOOLEAN, C_END };
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struct config_item {
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/*
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* `name' is never dynamically allocated.
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*/
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char *name;
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/*
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* `type' contains one of the above values.
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*/
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int type;
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/*
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* For C_STRING, `sval' is always dynamically allocated and
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* non-NULL. For C_BOOLEAN and C_END, `sval' is always NULL.
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* For C_CHOICES, `sval' is non-NULL, _not_ dynamically
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* allocated, and contains a set of option strings separated by
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* a delimiter. The delimeter is also the first character in
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* the string, so for example ":Foo:Bar:Baz" gives three
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* options `Foo', `Bar' and `Baz'.
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*/
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char *sval;
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/*
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* For C_BOOLEAN, this is TRUE or FALSE. For C_CHOICES, it
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* indicates the chosen index from the `sval' list. In the
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* above example, 0==Foo, 1==Bar and 2==Baz.
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*/
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int ival;
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};
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/*
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* Platform routines
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*/
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/* We can't use #ifdef DEBUG, because Cygwin defines it by default. */
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#ifdef DEBUGGING
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#define debug(x) (debug_printf x)
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void debug_printf(char *fmt, ...);
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#else
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#define debug(x)
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#endif
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void fatal(char *fmt, ...);
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void frontend_default_colour(frontend *fe, float *output);
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void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
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int align, int colour, char *text);
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void draw_rect(frontend *fe, int x, int y, int w, int h, int colour);
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void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour);
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void draw_polygon(frontend *fe, int *coords, int npoints,
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int fillcolour, int outlinecolour);
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void draw_circle(frontend *fe, int cx, int cy, int radius,
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int fillcolour, int outlinecolour);
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void clip(frontend *fe, int x, int y, int w, int h);
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void unclip(frontend *fe);
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void start_draw(frontend *fe);
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void draw_update(frontend *fe, int x, int y, int w, int h);
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void end_draw(frontend *fe);
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void deactivate_timer(frontend *fe);
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void activate_timer(frontend *fe);
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void status_bar(frontend *fe, char *text);
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void get_random_seed(void **randseed, int *randseedsize);
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blitter *blitter_new(int w, int h);
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void blitter_free(blitter *bl);
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/* save puts the portion of the current display with top-left corner
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* (x,y) to the blitter. load puts it back again to the specified
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* coords, or else wherever it was saved from
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* (if x = y = BLITTER_FROMSAVED). */
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void blitter_save(frontend *fe, blitter *bl, int x, int y);
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#define BLITTER_FROMSAVED (-1)
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void blitter_load(frontend *fe, blitter *bl, int x, int y);
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/*
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* midend.c
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*/
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midend_data *midend_new(frontend *fe, const game *ourgame);
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void midend_free(midend_data *me);
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void midend_set_params(midend_data *me, game_params *params);
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void midend_size(midend_data *me, int *x, int *y, int expand);
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void midend_new_game(midend_data *me);
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void midend_restart_game(midend_data *me);
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void midend_stop_anim(midend_data *me);
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int midend_process_key(midend_data *me, int x, int y, int button);
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void midend_force_redraw(midend_data *me);
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void midend_redraw(midend_data *me);
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float *midend_colours(midend_data *me, int *ncolours);
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void midend_timer(midend_data *me, float tplus);
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int midend_num_presets(midend_data *me);
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void midend_fetch_preset(midend_data *me, int n,
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char **name, game_params **params);
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int midend_wants_statusbar(midend_data *me);
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enum { CFG_SETTINGS, CFG_SEED, CFG_DESC };
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config_item *midend_get_config(midend_data *me, int which, char **wintitle);
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char *midend_set_config(midend_data *me, int which, config_item *cfg);
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char *midend_game_id(midend_data *me, char *id);
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char *midend_text_format(midend_data *me);
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char *midend_solve(midend_data *me);
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void midend_supersede_game_desc(midend_data *me, char *desc, char *privdesc);
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char *midend_rewrite_statusbar(midend_data *me, char *text);
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void midend_serialise(midend_data *me,
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void (*write)(void *ctx, void *buf, int len),
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void *wctx);
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char *midend_deserialise(midend_data *me,
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int (*read)(void *ctx, void *buf, int len),
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void *rctx);
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/*
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* malloc.c
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*/
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void *smalloc(size_t size);
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void *srealloc(void *p, size_t size);
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void sfree(void *p);
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char *dupstr(const char *s);
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#define snew(type) \
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( (type *) smalloc (sizeof (type)) )
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#define snewn(number, type) \
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( (type *) smalloc ((number) * sizeof (type)) )
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#define sresize(array, number, type) \
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( (type *) srealloc ((array), (number) * sizeof (type)) )
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/*
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* misc.c
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*/
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void free_cfg(config_item *cfg);
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void obfuscate_bitmap(unsigned char *bmp, int bits, int decode);
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/* allocates output each time. len is always in bytes of binary data.
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* May assert (or just go wrong) if lengths are unchecked. */
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char *bin2hex(const unsigned char *in, int inlen);
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unsigned char *hex2bin(const char *in, int outlen);
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/*
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* version.c
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*/
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extern char ver[];
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/*
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* random.c
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*/
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random_state *random_init(char *seed, int len);
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unsigned long random_bits(random_state *state, int bits);
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unsigned long random_upto(random_state *state, unsigned long limit);
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void random_free(random_state *state);
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char *random_state_encode(random_state *state);
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random_state *random_state_decode(char *input);
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/* random.c also exports SHA, which occasionally comes in useful. */
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typedef unsigned long uint32;
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typedef struct {
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uint32 h[5];
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unsigned char block[64];
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int blkused;
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uint32 lenhi, lenlo;
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} SHA_State;
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void SHA_Init(SHA_State *s);
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void SHA_Bytes(SHA_State *s, void *p, int len);
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void SHA_Final(SHA_State *s, unsigned char *output);
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void SHA_Simple(void *p, int len, unsigned char *output);
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/*
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* Data structure containing the function calls and data specific
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* to a particular game. This is enclosed in a data structure so
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* that a particular platform can choose, if it wishes, to compile
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* all the games into a single combined executable rather than
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* having lots of little ones.
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*/
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struct game {
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const char *name;
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const char *winhelp_topic;
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game_params *(*default_params)(void);
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int (*fetch_preset)(int i, char **name, game_params **params);
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void (*decode_params)(game_params *, char const *string);
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char *(*encode_params)(game_params *, int full);
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void (*free_params)(game_params *params);
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game_params *(*dup_params)(game_params *params);
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int can_configure;
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config_item *(*configure)(game_params *params);
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game_params *(*custom_params)(config_item *cfg);
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char *(*validate_params)(game_params *params);
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char *(*new_desc)(game_params *params, random_state *rs,
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char **aux, int interactive);
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char *(*validate_desc)(game_params *params, char *desc);
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game_state *(*new_game)(midend_data *me, game_params *params, char *desc);
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game_state *(*dup_game)(game_state *state);
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void (*free_game)(game_state *state);
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int can_solve;
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char *(*solve)(game_state *orig, game_state *curr,
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char *aux, char **error);
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int can_format_as_text;
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char *(*text_format)(game_state *state);
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game_ui *(*new_ui)(game_state *state);
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void (*free_ui)(game_ui *ui);
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char *(*encode_ui)(game_ui *ui);
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void (*decode_ui)(game_ui *ui, char *encoding);
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void (*changed_state)(game_ui *ui, game_state *oldstate,
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game_state *newstate);
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char *(*interpret_move)(game_state *state, game_ui *ui, game_drawstate *ds,
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int x, int y, int button);
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game_state *(*execute_move)(game_state *state, char *move);
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int preferred_tilesize;
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void (*compute_size)(game_params *params, int tilesize, int *x, int *y);
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void (*set_size)(game_drawstate *ds, game_params *params, int tilesize);
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float *(*colours)(frontend *fe, game_state *state, int *ncolours);
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game_drawstate *(*new_drawstate)(game_state *state);
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void (*free_drawstate)(game_drawstate *ds);
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void (*redraw)(frontend *fe, game_drawstate *ds, game_state *oldstate,
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game_state *newstate, int dir, game_ui *ui, float anim_time,
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float flash_time);
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float (*anim_length)(game_state *oldstate, game_state *newstate, int dir,
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game_ui *ui);
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float (*flash_length)(game_state *oldstate, game_state *newstate, int dir,
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game_ui *ui);
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int (*wants_statusbar)(void);
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int is_timed;
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int (*timing_state)(game_state *state);
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int mouse_priorities;
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};
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/*
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* For one-game-at-a-time platforms, there's a single structure
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* like the above, under a fixed name. For all-at-once platforms,
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* there's a list of all available puzzles in array form.
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*/
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#ifdef COMBINED
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extern const game *gamelist[];
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extern const int gamecount;
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#else
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extern const game thegame;
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#endif
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#endif /* PUZZLES_PUZZLES_H */
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