--- /dev/null
+/*-
+ * 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, int *vx, int *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);
projects / xscreensaver / blobdiff