xenocara/app/xlockmore/modes/pacman.c
2006-11-26 11:07:42 +00:00

861 lines
22 KiB
C

/* -*- Mode: C; tab-width: 4 -*- */
/* pacman --- Mr. Pacman and his ghost friends */
#if !defined( lint ) && !defined( SABER )
static const char sccsid[] = "@(#)pacman.c 5.00 2000/11/01 xlockmore";
#endif
/*-
* 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:
* 13-May-2002: Added -trackmouse feature thanks to code from 'maze.c'.
* splitted up code into several files. Retouched AI code, cleaned
* up code.
* 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
*
*/
/* TODO:
1. add "bonus" dots
2. make better ghost sprites (eyes, waving dress)
3. make a bit better pacman sprite (mouth should be larger)
4. think of a better level generation algorithm
*/
#ifdef STANDALONE
# define MODE_pacman
# define PROGCLASS "Pacman"
# define HACK_INIT init_pacman
# define HACK_DRAW draw_pacman
# define pacman_opts xlockmore_opts
# define DEFAULTS "*delay: 10000 \n" \
"*count: 10 \n" \
"*size: 0 \n" \
"*ncolors: 6 \n" \
"*bitmap: \n" \
"*trackmouse: False \n"
# define UNIFORM_COLORS
# define BRIGHT_COLORS
# include "xlockmore.h" /* in xscreensaver distribution */
#else /* STANDALONE */
# include "xlock.h" /* in xlockmore distribution */
#endif /* STANDALONE */
#include "iostuff.h"
#include <stdlib.h>
#include <math.h>
#ifdef MODE_pacman
#include "pacman.h"
#include "pacman_ai.h"
#include "pacman_level.h"
#ifdef DISABLE_INTERACTIVE
ModeSpecOpt pacman_opts = {
0,
(XrmOptionDescRec *) NULL,
0,
(argtype *) NULL,
(OptionStruct *) NULL
};
#else
static XrmOptionDescRec opts[] =
{
{(char *) "-trackmouse", (char *) ".pacman.trackmouse", XrmoptionNoArg,
(caddr_t) "on"},
{(char *) "+trackmouse", (char *) ".pacman.trackmouse", XrmoptionNoArg,
(caddr_t) "off"}
};
static argtype vars[] =
{
{(void *) & trackmouse, (char *) "trackmouse", (char *) "TrackMouse",
(char *) DEF_TRACKMOUSE, t_Bool}
};
static OptionStruct desc[] =
{
{(char *) "-/+trackmouse", (char *) "turn on/off the tracking of the "
"mouse"}
};
ModeSpecOpt pacman_opts =
{sizeof opts / sizeof opts[0], opts, sizeof vars / sizeof vars[0], vars, desc};
#endif
#ifdef USE_MODULES
ModStruct pacman_description = {
"pacman", /* *cmdline_arg; */
"init_pacman", /* *init_name; */
"draw_pacman", /* *callback_name; */
"release_pacman", /* *release_name; */
"refresh_pacman", /* *refresh_name; */
"change_pacman", /* *change_name; */
(char *) NULL, /* *unused_name; */
&pacman_opts, /* *msopts */
10000, 4, 1, 0, 64, 1.0, "", "Shows Pacman(tm)", 0, NULL
};
#endif
static void
free_pacman(Display *display, pacmangamestruct *pp)
{
int dir, mouth;
if (pp->ghosts != NULL) {
free(pp->ghosts);
pp->ghosts = (ghoststruct *) NULL;
}
if (pp->stippledGC != None) {
XFreeGC(display, pp->stippledGC);
pp->stippledGC = None;
}
if (pp->ghostPixmap != None) {
XFreePixmap(display, pp->ghostPixmap);
pp->ghostPixmap = None;
}
for (dir = 0; dir < 4; dir++)
for (mouth = 0; mouth < MAXMOUTH; mouth++)
if (pp->pacmanPixmap[dir][mouth] != None) {
XFreePixmap(display,
pp->pacmanPixmap[dir][mouth]);
pp->pacmanPixmap[dir][mouth] = None;
}
}
/* Checks for death of any ghosts/pacman and updates. It also makes a new
level if all ghosts are dead or all dots are eaten. */
static void
check_death(ModeInfo * mi, pacmangamestruct *pp)
{
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
unsigned int ghost;
int alldead;
alldead = 1;
for (ghost = 0; ghost < pp->nghosts; ghost++) {
if (pp->ghosts[ghost].dead == True)
continue;
if ((pp->ghosts[ghost].nextrow == NOWHERE &&
pp->ghosts[ghost].nextcol == NOWHERE)) {
alldead = 0;
continue;
}
if (((pp->ghosts[ghost].nextrow == pp->pacman.nextrow) &&
(pp->ghosts[ghost].nextcol == pp->pacman.nextcol)) ||
((pp->ghosts[ghost].nextrow == pp->pacman.row) &&
(pp->ghosts[ghost].nextcol == pp->pacman.col) &&
(pp->ghosts[ghost].row == pp->pacman.nextrow) &&
(pp->ghosts[ghost].col == pp->pacman.nextcol))) {
pp->ghosts[ghost].dead = 1;
XSetForeground(display,
pp->stippledGC,
MI_BLACK_PIXEL(mi));
XFillRectangle(display, window,
pp->stippledGC,
pp->ghosts[ghost].cf,
pp->ghosts[ghost].rf,
pp->spritexs,
pp->spriteys);
} else
alldead = 0;
}
if (alldead == 1 || pp->dotsleft == 0)
repopulate(mi);
}
/* Resets state of ghosts + pacman. Creates a new level, draws that level. */
static void
repopulate(ModeInfo * mi)
{
pacmangamestruct *pp = &pacmangames[MI_SCREEN(mi)];
unsigned int ghost;
int i = createnewlevel(mi);
MI_CLEARWINDOW(mi);
drawlevel(mi);
pp->gamestate = GHOST_DANGER;
pp->pacman.row = (LEVHEIGHT + JAILHEIGHT)/2 - i;
pp->pacman.col = (LEVWIDTH/2);
pp->pacman.nextrow = NOWHERE;
pp->pacman.nextcol = NOWHERE;
pp->pacman.cf = NOWHERE;
pp->pacman.rf = NOWHERE;
pp->pacman.oldcf = NOWHERE;
pp->pacman.oldrf = NOWHERE;
pp->pacman.oldlx = NOWHERE;
pp->pacman.oldly = NOWHERE;
pp->pacman.aistate = ps_eating;
pp->pacman.cur_trace = 0;
pp->pacman.roundscore = 0;
pp->pacman.speed = 4;
pp->pacman.lastturn = 0;
pp->pacman.delta.x = 0;
pp->pacman.delta.y = 0;
pac_clear_trace(&(pp->pacman));
for (ghost = 0; ghost < pp->nghosts; ghost++) {
pp->ghosts[ghost].col = (LEVWIDTH/2);
pp->ghosts[ghost].row = (LEVHEIGHT/2);
pp->ghosts[ghost].nextcol = NOWHERE;
pp->ghosts[ghost].nextrow = NOWHERE;
pp->ghosts[ghost].dead = 0;
pp->ghosts[ghost].lastbox = START;
pp->ghosts[ghost].cf = NOWHERE;
pp->ghosts[ghost].rf = NOWHERE;
pp->ghosts[ghost].oldcf = NOWHERE;
pp->ghosts[ghost].oldrf = NOWHERE;
pp->ghosts[ghost].aistate = inbox;
pp->ghosts[ghost].timeleft = ghost * 50;
pp->ghosts[ghost].speed = 3;
pp->ghosts[ghost].delta.x = 0;
pp->ghosts[ghost].delta.y = 0;
ghost_update(pp, &(pp->ghosts[ghost]));
}
check_death(mi, pp);
pac_update(mi, pp, &(pp->pacman));
}
/* Sets the color to the color of a wall. */
static void
setwallcolor(ModeInfo * mi)
{
Display *display = MI_DISPLAY(mi);
pacmangamestruct *pp = &pacmangames[MI_SCREEN(mi)];
if (MI_NPIXELS(mi) > 2)
XSetForeground(display, pp->stippledGC,
MI_PIXEL(mi, BLUE));
else
XSetForeground(display, pp->stippledGC,
MI_WHITE_PIXEL(mi));
}
/* Sets the color to the color of a dot. */
static void
setdotcolor(ModeInfo * mi)
{
Display *display = MI_DISPLAY(mi);
pacmangamestruct *pp = &pacmangames[MI_SCREEN(mi)];
XSetForeground(display, pp->stippledGC,
MI_WHITE_PIXEL(mi));
}
/* Draws a block in the level at the specified x and y locations. */
static void
drawlevelblock(ModeInfo * mi, pacmangamestruct *pp,
const unsigned x, const unsigned y)
{
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
int dx = 0, dy = 0;
if (pp->xs % 2 == 1) dx = -1;
if (pp->ys % 2 == 1) dy = -1;
XSetFillStyle(display, pp->stippledGC, FillSolid);
XSetLineAttributes(display, pp->stippledGC, pp->wallwidth,
LineSolid, CapRound, JoinMiter);
if (pp->xs < 2 || pp->ys < 2) {
switch(pp->level[y*LEVWIDTH + x]) {
case ' ':
case '=':
break;
case '.':
setdotcolor(mi);
(void)XDrawPoint(display, window,
pp->stippledGC,
x * pp->xs + pp->xb,
y * pp->ys + pp->yb);
break;
default:
setwallcolor(mi);
(void)XDrawPoint(display, window,
pp->stippledGC,
x * pp->xs + pp->xb,
y * pp->ys + pp->yb);
}
return;
}
switch (pp->level[y*LEVWIDTH + x]) {
case ' ':
case '=':
break;
case '.':
setdotcolor(mi);
if (pp->xs < 8 || pp->ys < 8) {
(void)XDrawPoint(display, window,
pp->stippledGC,
x * pp->xs + pp->xb +
pp->xs/2,
y * pp->ys + pp->yb +
pp->ys/2);
break;
}
(void)XDrawArc(display, window, pp->stippledGC,
(pp->xs * x) +
(pp->xs / 2) -
(pp->xs > 32 ? (pp->xs / 16) : 1) +
pp->xb,
(pp->ys * y) +
(pp->ys / 2) -
(pp->ys > 32 ? (pp->ys / 16) : 1) +
pp->yb,
(pp->xs > 32 ? (pp->xs / 32) : 1),
(pp->ys > 32 ? (pp->ys / 32) : 1),
0, 23040);
break;
case '-':
setwallcolor(mi);
(void)XDrawLine(display, window, pp->stippledGC,
(pp->xs * x) + pp->xb,
(pp->ys * y) + (pp->ys / 2) + pp->yb,
(pp->xs * (x + 1)) + pp->xb,
(pp->ys * y) + (pp->ys / 2) + pp->yb);
break;
case '|':
setwallcolor(mi);
(void)XDrawLine(display, window, pp->stippledGC,
(pp->xs * x) + (pp->xs / 2) + pp->xb,
(pp->ys * y) + pp->yb,
(pp->xs * x) + (pp->xs / 2) + pp->xb,
(pp->ys * (y + 1)) + pp->yb);
break;
case '_':
setwallcolor(mi);
(void)XDrawArc(display, window, pp->stippledGC,
(pp->xs * x) - (pp->ys / 2) + pp->xb + dx,
(pp->ys * y) + (pp->ys / 2) + pp->yb,
pp->xs, pp->ys,
0*64, 90*64);
break;
case ',':
setwallcolor(mi);
(void)XDrawArc(display, window, pp->stippledGC,
(pp->xs * x) + (pp->ys / 2) + pp->xb,
(pp->ys * y) + (pp->ys / 2) + pp->yb,
pp->xs, pp->ys,
90*64, 90*64);
break;
case '`':
setwallcolor(mi);
(void)XDrawArc(display, window, pp->stippledGC,
(pp->xs * x) + (pp->ys / 2) + pp->xb,
(pp->ys * y) - (pp->ys / 2) + pp->yb + dy,
pp->xs, pp->ys,
180*64, 90*64);
break;
case '\'':
setwallcolor(mi);
(void)XDrawArc(display, window, pp->stippledGC,
(pp->xs * x) - (pp->ys / 2) + pp->xb + dx,
(pp->ys * y) - (pp->ys / 2) + pp->yb + dy,
pp->xs, pp->ys,
270*64, 90*64);
break;
}
}
/* Draws a complete level. */
static void
drawlevel(ModeInfo * mi)
{
pacmangamestruct *pp = &pacmangames[MI_SCREEN(mi)];
unsigned int x, y;
for (y = 0; y < LEVHEIGHT; y++)
for (x = 0; x < LEVWIDTH; x++)
drawlevelblock(mi, pp, x, y);
}
/* Draws the pacman sprite, removing the previous location. */
static void
draw_pacman_sprite(ModeInfo * mi)
{
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
pacmangamestruct *pp = &pacmangames[MI_SCREEN(mi)];
unsigned int dir;
pp->pacman.cf = pp->pacman.col * pp->xs + pp->pacman.delta.x *
pp->pacman.cfactor + pp->xb + pp->spritedx;
pp->pacman.rf = pp->pacman.row * pp->ys + pp->pacman.delta.y *
pp->pacman.rfactor + pp->yb + pp->spritedy;
dir = (ABS(pp->pacman.cfactor) * (2 - pp->pacman.cfactor) +
ABS(pp->pacman.rfactor) * (1 + pp->pacman.rfactor)) % 4;
XSetForeground(display, pp->stippledGC,
MI_BLACK_PIXEL(mi));
if (pp->pacman.oldcf != NOWHERE && pp->pacman.oldrf != NOWHERE) {
#ifdef FLASH
XFillRectangle(display, window, pp->stippledGC,
pp->pacman.oldcf, pp->pacman.oldrf,
pp->spritexs, pp->spriteys);
#else
#ifdef WIN32
XSetFillStyle(display, pp->stippledGC, FillSolid);
#endif
ERASE_IMAGE(display, window, pp->stippledGC,
pp->pacman.cf, pp->pacman.rf,
pp->pacman.oldcf, pp->pacman.oldrf,
pp->spritexs, pp->spriteys);
#endif
}
XSetTSOrigin(display, pp->stippledGC,
pp->pacman.cf, pp->pacman.rf);
if (MI_NPIXELS(mi) > 2)
XSetForeground(display, pp->stippledGC,
MI_PIXEL(mi, YELLOW));
else
XSetForeground(display, pp->stippledGC,
MI_WHITE_PIXEL(mi));
XSetStipple(display, pp->stippledGC,
pp->pacmanPixmap[dir][pp->pacman.mouthstage]);
#ifdef FLASH
XSetFillStyle(display, pp->stippledGC, FillStippled);
#else
XSetFillStyle(display, pp->stippledGC,
FillOpaqueStippled);
#endif
if (pp->xs < 2 || pp->ys < 2)
XDrawPoint(display, window, pp->stippledGC,
pp->pacman.cf, pp->pacman.rf);
else
XFillRectangle(display, window, pp->stippledGC,
pp->pacman.cf, pp->pacman.rf,
pp->spritexs, pp->spriteys);
pp->pacman.mouthstage += pp->pacman.mouthdirection;
if ((pp->pacman.mouthstage >= MAXMOUTH) ||
(pp->pacman.mouthstage < 0)) {
pp->pacman.mouthdirection *= -1;
pp->pacman.mouthstage += pp->pacman.mouthdirection * 2;
}
pp->pacman.oldcf = pp->pacman.cf;
pp->pacman.oldrf = pp->pacman.rf;
}
/* Draws a ghost sprite, removing the previous sprite and restores the level. */
static void
draw_ghost_sprite(ModeInfo * mi, const unsigned ghost) {
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
pacmangamestruct *pp = &pacmangames[MI_SCREEN(mi)];
pp->ghosts[ghost].cf =
pp->ghosts[ghost].col * pp->xs + pp->ghosts[ghost].delta.x *
pp->ghosts[ghost].cfactor + pp->xb + pp->spritedx;
pp->ghosts[ghost].rf =
pp->ghosts[ghost].row * pp->ys + pp->ghosts[ghost].delta.y *
pp->ghosts[ghost].rfactor + pp->yb + pp->spritedy;
XSetForeground(display,
pp->stippledGC,
MI_BLACK_PIXEL(mi));
if (pp->ghosts[ghost].oldcf != NOWHERE ||
pp->ghosts[ghost].oldrf != NOWHERE) {
#ifdef FLASH
XFillRectangle(display, window,
pp->stippledGC, pp->ghosts[ghost].oldcf,
pp->ghosts[ghost].oldrf,
pp->spritexs, pp->spriteys);
#else
#ifdef WIN32
XSetFillStyle(display, pp->stippledGC, FillSolid);
#endif
ERASE_IMAGE(display, window, pp->stippledGC,
pp->ghosts[ghost].cf, pp->ghosts[ghost].rf,
pp->ghosts[ghost].oldcf, pp->ghosts[ghost].oldrf,
pp->spritexs, pp->spriteys);
#endif
}
drawlevelblock(mi, pp,
(unsigned int)pp->ghosts[ghost].col,
(unsigned int)pp->ghosts[ghost].row);
XSetTSOrigin(display, pp->stippledGC,
pp->ghosts[ghost].cf, pp->ghosts[ghost].rf);
if (MI_NPIXELS(mi) > 2)
XSetForeground(display,
pp->stippledGC,
MI_PIXEL(mi, GREEN));
else
XSetForeground(display,
pp->stippledGC,
MI_WHITE_PIXEL(mi));
XSetStipple(display, pp->stippledGC,
pp->ghostPixmap);
#ifdef FLASH
XSetFillStyle(display,
pp->stippledGC,
FillStippled);
#else
XSetFillStyle(display,
pp->stippledGC,
FillOpaqueStippled);
#endif
if (pp->xs < 2 || pp->ys < 2)
XDrawPoint(display, window, pp->stippledGC,
pp->ghosts[ghost].cf,
pp->ghosts[ghost].rf);
else
XFillRectangle(display,
window,
pp->stippledGC,
pp->ghosts[ghost].cf,
pp->ghosts[ghost].rf,
pp->spritexs, pp->spriteys);
pp->ghosts[ghost].oldcf = pp->ghosts[ghost].cf;
pp->ghosts[ghost].oldrf = pp->ghosts[ghost].rf;
}
/* Does all drawing of moving sprites in the level. */
static void
pacman_tick(ModeInfo * mi)
{
Display *display = MI_DISPLAY(mi);
pacmangamestruct *pp = &pacmangames[MI_SCREEN(mi)];
unsigned int ghost;
for (ghost = 0; ghost < pp->nghosts; ghost++) {
if (pp->ghosts[ghost].dead == True)
continue;
draw_ghost_sprite(mi, ghost);
}
draw_pacman_sprite(mi);
(void)XFlush(display);
}
/* Hook function, sets state to initial position. */
void
init_pacman(ModeInfo * mi)
{
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
int size = MI_SIZE(mi);
pacmangamestruct *pp;
XGCValues gcv;
int dir, mouth;
GC fg_gc, bg_gc;
XPoint points[9];
if (pacmangames == NULL) {
if ((pacmangames = (pacmangamestruct *)
calloc((size_t)MI_NUM_SCREENS(mi),
sizeof (pacmangamestruct))) == NULL)
return;
}
pp = &pacmangames[MI_SCREEN(mi)];
pp->width = (unsigned short)MI_WIDTH(mi);
pp->height = (unsigned short)MI_HEIGHT(mi);
if (pp->ghostPixmap != None) {
XFreePixmap(display, pp->ghostPixmap);
pp->ghostPixmap = None;
pp->graphics_format = IS_NONE;
}
if (size == 0 ||
MINGRIDSIZE * size > (int)pp->width ||
MINGRIDSIZE * size > (int)pp->height) {
pp->ys = pp->xs = MAX(MIN(pp->width/LEVWIDTH,
pp->height/LEVHEIGHT), 1);
} else {
if (size < -MINSIZE)
pp->ys = (short)(NRAND( MIN( -size, MAX( MINSIZE,
MIN( pp->width, pp->height) / MINGRIDSIZE))
- MINSIZE + 1) + MINSIZE);
else if (size < MINSIZE)
pp->ys = MINSIZE;
else
pp->ys = (short)(MIN(size,
MAX(MINSIZE, MIN(pp->width, pp->height) /
MINGRIDSIZE)));
pp->xs = pp->ys;
}
pp->wallwidth = (unsigned int)(pp->xs + pp->ys) >> 4;
if (pp->wallwidth < 1) pp->wallwidth = 1;
pp->incx = (pp->xs >> 3) + 1;
pp->incy = (pp->ys >> 3) + 1;
pp->ncols = (unsigned short)MAX(LEVWIDTH, 2);
pp->nrows = (unsigned short)MAX(LEVHEIGHT, 2);
pp->xb = (pp->width - pp->ncols * pp->xs) >> 1;
pp->yb = (pp->height - pp->nrows * pp->ys) >> 1;
pp->spritexs = MAX(pp->xs + (pp->xs >> 1) - 1, 1);
pp->spriteys = MAX(pp->ys + (pp->ys >> 1) - 1, 1);
pp->spritedx = (pp->xs - pp->spritexs) >> 1;
pp->spritedy = (pp->ys - pp->spriteys) >> 1;
if ((pp->ghostPixmap = XCreatePixmap(display, window,
pp->spritexs, pp->spriteys, 1)) == None) {
free_pacman(display, pp);
return;
}
gcv.foreground = 0;
gcv.background = 1;
if ((bg_gc = XCreateGC(display, pp->ghostPixmap,
GCForeground | GCBackground, &gcv)) == None) {
free_pacman(display, pp);
return;
}
gcv.foreground = 1;
gcv.background = 0;
if ((fg_gc = XCreateGC(display, pp->ghostPixmap,
GCForeground | GCBackground, &gcv)) == None) {
XFreeGC(display, bg_gc);
free_pacman(display, pp);
return;
}
#define SETPOINT(p, xp, yp) p.x = xp; p.y = yp
/* draw the triangles on the bottom (scalable) */
SETPOINT(points[0], 1, pp->spriteys * 5 / 6);
SETPOINT(points[1], pp->spritexs / 6, pp->spriteys);
SETPOINT(points[2], pp->spritexs / 3, pp->spriteys * 5 / 6);
SETPOINT(points[3], pp->spritexs / 2, pp->spriteys);
SETPOINT(points[4], pp->spritexs * 2 / 3, pp->spriteys * 5 / 6);
SETPOINT(points[5], pp->spritexs * 5 / 6, pp->spriteys);
SETPOINT(points[6], pp->spritexs, pp->spriteys * 5 / 6);
SETPOINT(points[7], pp->spritexs, pp->spriteys / 2);
SETPOINT(points[8], 1, pp->spriteys / 2);
XFillRectangle(display, pp->ghostPixmap, bg_gc,
0, 0, pp->spritexs, pp->spriteys);
XFillArc(display, pp->ghostPixmap, fg_gc,
0, 0, pp->spritexs, pp->spriteys, 0, 11520);
XFillPolygon(display, pp->ghostPixmap, fg_gc,
points, 9, Nonconvex, CoordModeOrigin);
XFreeGC(display, bg_gc);
XFreeGC(display, fg_gc);
if (!pp->stippledGC) {
gcv.foreground = MI_BLACK_PIXEL(mi);
gcv.background = MI_BLACK_PIXEL(mi);
if ((pp->stippledGC = XCreateGC(display, window,
GCForeground | GCBackground, &gcv)) == None) {
free_pacman(display, pp);
return;
}
}
if (pp->pacmanPixmap[0][0] != None)
for (dir = 0; dir < 4; dir++)
for (mouth = 0; mouth < MAXMOUTH; mouth++)
XFreePixmap(display,
pp->pacmanPixmap[dir]
[mouth]);
for (dir = 0; dir < 4; dir++)
for (mouth = 0; mouth < MAXMOUTH; mouth++) {
if ((pp->pacmanPixmap[dir][mouth] = XCreatePixmap(
display, MI_WINDOW(mi),
pp->spritexs, pp->spriteys, 1)) ==
None) {
free_pacman(display, pp);
return;
}
gcv.foreground = 1;
gcv.background = 0;
if ((fg_gc = XCreateGC(display, pp->pacmanPixmap[dir][mouth],
GCForeground | GCBackground, &gcv)) == None) {
free_pacman(display, pp);
return;
}
gcv.foreground = 0;
gcv.background = 0;
if ((bg_gc = XCreateGC(display,
pp->pacmanPixmap[dir][mouth],
GCForeground |
GCBackground, &gcv)) ==
None) {
XFreeGC(display, fg_gc);
free_pacman(display, pp);
return;
}
XFillRectangle(display,
pp->pacmanPixmap[dir][mouth], bg_gc,
0, 0, pp->spritexs, pp->spriteys);
if (pp->spritexs == 1 && pp->spriteys == 1)
XFillRectangle(display,
pp->pacmanPixmap[dir][mouth],
fg_gc, 0, 0, pp->spritexs,
pp->spriteys);
else
XFillArc(display,
pp->pacmanPixmap[dir][mouth],
fg_gc,
0, 0, pp->spritexs, pp->spriteys,
((90 - dir * 90) + mouth * 5) * 64,
(360 + (-2 * mouth * 5)) * 64);
XFreeGC(display, fg_gc);
XFreeGC(display, bg_gc);
}
pp->pacman.lastbox = START;
pp->pacman.mouthdirection = 1;
pp->pacman.nextcol = NOWHERE;
pp->pacman.nextrow = NOWHERE;
if (pp->ghosts != NULL) {
free(pp->ghosts);
pp->ghosts = (ghoststruct *) NULL;
}
pp->nghosts = GHOSTS;
if (!pp->ghosts)
if ((pp->ghosts = (ghoststruct *) calloc((size_t)pp->nghosts,
sizeof (ghoststruct))) == NULL) {
free_pacman(display, pp);
return;
}
pp->pacman.mouthstage = MAXMOUTH - 1;
MI_CLEARWINDOW(mi);
repopulate(mi);
}
/* Callback function called for each tick. This is the complete machinery of
everything that moves. */
void
draw_pacman(ModeInfo * mi)
{
unsigned int g;
pacmangamestruct *pp;
if (pacmangames == NULL)
return;
pp = &pacmangames[MI_SCREEN(mi)];
if (pp->ghosts == NULL)
return;
pp->pacman.err.x = (pp->pacman.err.x + 1) % pp->pacman.speed;
pp->pacman.err.y = (pp->pacman.err.y + 1) % pp->pacman.speed;
pp->pacman.delta.x += pp->pacman.err.x != 0 ? pp->incx : 0;
pp->pacman.delta.y += pp->pacman.err.y != 0 ? pp->incy : 0;
if (pp->pacman.delta.x >= pp->xs && pp->pacman.delta.y >= pp->ys) {
pac_update(mi, pp, &(pp->pacman));
check_death(mi, pp);
pp->pacman.delta.x = pp->incx;
pp->pacman.delta.y = pp->incy;
}
if (pp->pacman.delta.x > pp->xs + pp->incx)
pp->pacman.delta.x = pp->xs + pp->incx;
if (pp->pacman.delta.y > pp->ys + pp->incy)
pp->pacman.delta.y = pp->ys + pp->incy;
for (g = 0; g < pp->nghosts; g++) {
if (pp->ghosts[g].dead == True) continue;
pp->ghosts[g].err.x = (pp->ghosts[g].err.x + 1) %
pp->ghosts[g].speed;
pp->ghosts[g].err.y = (pp->ghosts[g].err.y + 1) %
pp->ghosts[g].speed;
pp->ghosts[g].delta.x += pp->ghosts[g].err.x != 0 ?
pp->incx : 0;
pp->ghosts[g].delta.y += pp->ghosts[g].err.y != 0 ?
pp->incy : 0;
if (pp->ghosts[g].delta.x >= pp->xs &&
pp->ghosts[g].delta.y >= pp->ys) {
ghost_update(pp, &(pp->ghosts[g]));
pp->ghosts[g].delta.x = pp->incx;
pp->ghosts[g].delta.y = pp->incy;
}
if (pp->ghosts[g].delta.x > pp->xs + pp->incx)
pp->ghosts[g].delta.x = pp->xs + pp->incx;
if (pp->ghosts[g].delta.y > pp->ys + pp->incy)
pp->ghosts[g].delta.y = pp->ys + pp->incy;
}
pacman_tick(mi);
}
/* Releases resources. */
void
release_pacman(ModeInfo * mi)
{
if (pacmangames != NULL) {
int screen;
for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++)
free_pacman(MI_DISPLAY(mi), &pacmangames[screen]);
free(pacmangames);
pacmangames = (pacmangamestruct *) NULL;
}
}
/* Refresh current level. */
void
refresh_pacman(ModeInfo * mi)
{
drawlevel(mi);
pacman_tick(mi);
}
/* Callback to change level. */
void
change_pacman(ModeInfo * mi)
{
MI_CLEARWINDOW(mi);
repopulate(mi);
}
#endif /* MODE_pacman */