xenocara/app/xlockmore/modes/pacman.h

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2006-11-26 04:07:42 -07:00
/*-
* Copyright (c) 2002 by Edwin de Jong <mauddib@gmx.net>.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation.
*
* This file is provided AS IS with no warranties of any kind. The author
* shall have no liability with respect to the infringement of copyrights,
* trade secrets or any patents by this file or any part thereof. In no
* event will the author be liable for any lost revenue or profits or
* other special, indirect and consequential damages.
*
* Revision History:
* 3-May-2002: Added AI to pacman and ghosts, slowed down ghosts.
* 26-Nov-2001: Random level generator added
* 01-Nov-2000: Allocation checks
* 04-Jun-1997: Compatible with xscreensaver
*
*/
#define LEVHEIGHT 32U
#define LEVWIDTH 40U
#define GETNB(n) ((1 << (n)) - 1)
#define TESTNB(v, n) (((1 << (n)) & v) != 0x00)
#define SNB(v, n) ((v) |= (1 << (n)))
#define UNSNB(v, n) ((v) &= ~(1 << (n)))
#define GHOSTS 4U
#define MAXMOUTH 11
#define MAXGPOS 2
#define MINGRIDSIZE 4
#define MINSIZE 3
#define NOWHERE 16383
#define START ((LRAND() & 1) ? 1 : 3)
#define MINDOTPERC 10
#define YELLOW (MI_NPIXELS(mi) / 6)
#define GREEN (23 * MI_NPIXELS(mi) / 64)
#define BLUE (45 * MI_NPIXELS(mi) / 64)
#define WHITE (MI_NPIXELS(mi))
#define LINEWIDTH 4
#define HLINEWIDTH 1
#define JAILHEIGHT 7
#define JAILWIDTH 8
#define GETFACTOR(x, y) ((x) > (y) ? 1 : ((x) < (y) ? -1 : 0))
#define SIGN(x) GETFACTOR((x), 0)
#define TRACEVECS 40
#define DEF_TRACKMOUSE "False"
static Bool trackmouse;
typedef struct { int vx, vy; } tracevec_struct;
typedef enum { inbox = 0, goingout, randdir, chasing, hiding } GhostState;
typedef enum { ps_eating = 0, ps_chasing, ps_hiding, ps_random } PacmanState;
typedef enum { GHOST_DANGER, GHOST_EATEN } GameState;
typedef struct {
unsigned int col, row;
unsigned int lastbox, nextcol, nextrow;
int dead;
int cfactor, rfactor;
int cf, rf;
int oldcf, oldrf;
int timeleft;
GhostState aistate;
/*int color; */
int speed;
XPoint delta;
XPoint err;
} ghoststruct;
typedef struct {
unsigned int col, row;
unsigned int lastbox, nextcol, nextrow;
int mouthstage, mouthdirection;
int cfactor, rfactor;
int cf, rf;
int oldcf, oldrf;
int oldlx, oldly;
int justate;
PacmanState aistate;
tracevec_struct trace[TRACEVECS];
int cur_trace;
int state_change;
int roundscore;
int speed;
int lastturn;
XPoint delta;
XPoint err;
} pacmanstruct;
typedef struct {
unsigned short width, height;
unsigned short nrows, ncols;
short xs, ys, xb, yb;
short incx, incy;
GC stippledGC;
int graphics_format;
pacmanstruct pacman;
ghoststruct *ghosts;
unsigned int nghosts;
Pixmap pacmanPixmap[4][MAXMOUTH];
/* Pixmap ghostPixmap[4][MAXGPOS];*/
Pixmap ghostPixmap;
char level[LEVHEIGHT * LEVWIDTH];
unsigned int wallwidth;
unsigned int dotsleft;
int spritexs, spriteys, spritedx, spritedy;
GameState gamestate;
unsigned int timeleft;
} pacmangamestruct;
#define DIRVECS 4
static const struct { int dx, dy; } dirvecs[DIRVECS] =
{ {-1, 0}, {0, 1}, {1, 0}, {0, -1}};
static pacmangamestruct *pacmangames = (pacmangamestruct *) NULL;
typedef char lev_t[LEVHEIGHT][LEVWIDTH + 1];
/* function type definitions */
/* level generation */
static int creatlevelblock(lev_t *level, const unsigned x,
const unsigned y);
static void setblockto(lev_t *level, const unsigned x, const unsigned y,
const char c);
static int checkset(lev_t *level, const unsigned x, const unsigned y);
static int checksetout(lev_t *level, const unsigned x, const unsigned y);
static int checkunsetdef(lev_t *level, const unsigned x, const unsigned y);
static void clearlevel(lev_t *level);
static void copylevel(char *dest, lev_t *level);
static void createjail(lev_t *level, const unsigned width,
const unsigned height);
static void finishjail(lev_t *level, const unsigned width,
const unsigned height);
static int tryset(lev_t *level, const unsigned xpos, const unsigned ypos,
const char *block);
static int creatlevelblock(lev_t *level, const unsigned x,
const unsigned y);
static void filllevel(lev_t *level);
static void frmtlevel(lev_t *level);
static unsigned countdots(ModeInfo * mi);
static int createnewlevel(ModeInfo * mi);
static int check_pos(pacmangamestruct *pp, int y, int x, int ghostpass);
static int check_dot(pacmangamestruct *pp, unsigned int x, unsigned int y);
/* graphics rendering */
static void drawlevel(ModeInfo * mi);
/* AI */
static int ghost_get_posdirs(pacmangamestruct *pp, int *posdirs,
ghoststruct *g);
static void ghost_random(pacmangamestruct *pp, ghoststruct *g);
static void ghost_chasing(pacmangamestruct *pp, ghoststruct *g);
static void ghost_hiding(pacmangamestruct *pp, ghoststruct *g);
static void ghost_update(pacmangamestruct *pp, ghoststruct *g);
static void pac_dot_vec(pacmangamestruct *pp, pacmanstruct *p,
long *vx, long *vy);
static int pac_ghost_prox_and_vector(pacmangamestruct *pp,
pacmanstruct *p, long *vx, long *vy);
static int pac_get_posdirs(pacmangamestruct *pp, pacmanstruct *p,
int *posdirs);
static void pac_clear_trace(pacmanstruct *p);
static void pac_save_trace(pacmanstruct *p, const int vx, const int vy);
static int pac_check_trace(const pacmanstruct *p, const int vx,
const int vy);
static void pac_eating(pacmangamestruct *pp, pacmanstruct *p);
#if 0
static void pac_chasing(pacmangamestruct *pp, pacmanstruct *p);
#endif
static void pac_random(pacmangamestruct *pp, pacmanstruct *p);
static int pac_get_vector_screen(pacmangamestruct *pp, pacmanstruct *p,
const int x, const int y, int *vx, int *vy);
static int pac_trackmouse(ModeInfo * mi, pacmangamestruct *pp,
pacmanstruct *p);
static void pac_update(ModeInfo * mi, pacmangamestruct *pp,
pacmanstruct *p);
/* generic functions */
static void repopulate(ModeInfo * mi);