X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?p=xscreensaver;a=blobdiff_plain;f=hacks%2Fpacman_level.c;h=5d35118d330d39574d3b8d9e0f5164a131fcc7d9;hp=2daf6b8f8ffbbf80f981b685535fabade04f41c8;hb=447db08c956099b3b183886729108bf5b364c4b8;hpb=2d04c4f22466851aedb6ed0f2919d148f726b889 diff --git a/hacks/pacman_level.c b/hacks/pacman_level.c index 2daf6b8f..5d35118d 100644 --- a/hacks/pacman_level.c +++ b/hacks/pacman_level.c @@ -1,3 +1,4 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /*- * Copyright (c) 2002 by Edwin de Jong . * @@ -14,9 +15,11 @@ * other special, indirect and consequential damages. */ +#include #include "pacman.h" #include "pacman_level.h" + #define MI_SCREEN(MI) (0) #define NONE 0x0000 @@ -37,42 +40,44 @@ #define BLOCK_WALL_BL '_' #define BLOCK_WALL_HO '-' #define BLOCK_WALL_VE '|' +#define BLOCK_DOT_BONUS 'o' /* This is more or less the standard pacman level (without the left-right tunnel. */ static const lev_t stdlevel = { - "########################################", - "########################################", - "#######````````````##````````````#######", - "#######`####`#####`##`#####`####`#######", - "#######`####`#####`##`#####`####`#######", - "#######`####`#####`##`#####`####`#######", - "#######``````````````````````````#######", - "#######`####`##`########`##`####`#######", - "#######`####`##`########`##`####`#######", - "#######``````##````##````##``````#######", - "############`#####`##`#####`############", - "############`#####`##`#####`############", - "############`##``````````##`############", - "############`##`###==###`##`############", - "############`##`########`##`############", - "############````########````############", - "############`##`########`##`############", - "############`##`########`##`############", - "############`##``````````##`############", - "############`##`########`##`############", - "############`##`########`##`############", - "#######````````````##````````````#######", - "#######`####`#####`##`#####`####`#######", - "#######`####`#####`##`#####`####`#######", - "#######```##````````````````##```#######", - "#########`##`##`########`##`##`#########", - "#########`##`##`########`##`##`#########", - "#######``````##````##````##``````#######", - "#######`##########`##`##########`#######", - "#######`##########`##`##########`#######", - "#######``````````````````````````#######", - "########################################"}; + "########################################", + "########################################", + "#######````````````##````````````#######", + "#######`####`#####`##`#####`####`#######", + "#######`####`#####`##`#####`####`#######", + "#######`####`#####`##`#####`####`#######", + "#######``````````````````````````#######", + "#######`####`##`########`##`####`#######", + "#######`####`##`########`##`####`#######", + "#######``````##````##````##``````#######", + "############`#####`##`#####`############", + "############`#####`##`#####`############", + "############`##``````````##`############", + "############`##`###==###`##`############", + "############`##`########`##`############", + "############````########````############", + "############`##`########`##`############", + "############`##`########`##`############", + "############`##``````````##`############", + "############`##`########`##`############", + "############`##`########`##`############", + "#######````````````##````````````#######", + "#######`####`#####`##`#####`####`#######", + "#######`####`#####`##`#####`####`#######", + "#######```##````````````````##```#######", + "#########`##`##`########`##`##`#########", + "#########`##`##`########`##`##`#########", + "#######``````##````##````##``````#######", + "#######`##########`##`##########`#######", + "#######`##########`##`##########`#######", + "#######``````````````````````````#######", + "########################################" +}; #define TILEWIDTH 5U #define TILEHEIGHT 5U @@ -84,579 +89,698 @@ static const lev_t stdlevel = { #define GO_DOWN 0x0008U /* This are tiles which can be places to create a level. */ -static struct { - char block[TILEWIDTH * TILEHEIGHT + 1]; - unsigned dirvec[4]; - unsigned ndirs; - unsigned simular_to; -} tiles[TILES_COUNT] = { +static struct +{ + char block[TILEWIDTH * TILEHEIGHT + 1]; + unsigned dirvec[4]; + unsigned ndirs; + unsigned simular_to; +} tiles[TILES_COUNT] = { /* * ' ' == dont care == BLOCK_EMPTY * '#' == set wall, and not clear == BLOCK_WALL * '`' == clear == BLOCK_DOT_1 * middle position is always set as cleardef */ - { " # " - " # " - " ``` " - " # " - " # ", - { GO_LEFT, GO_RIGHT, 0, 0 }, 2, - (unsigned) (1 << 0 | 1 << 6 | 1 << 8 | 1 << 10) }, - { " " - " ` " - "##`##" - " ` " - " ", - { GO_UP, GO_DOWN, 0, 0 }, 2, - (unsigned) (1 << 1 | 1 << 7 | 1 << 9 | 1 << 10) }, - { " ##" - "##`##" - "##`` " - "#### " - "#### ", - { GO_UP, GO_RIGHT, 0, 0 }, 2, - (unsigned) (1 << 2 | 1 << 6 | 1 << 7 | 1 << 10) }, - { "#### " - "#### " - "##`` " - "##`##" - " ##", - { GO_RIGHT, GO_DOWN, 0, 0 }, 2, - (unsigned) (1 << 3 | 1 << 7 | 1 << 8 | 1 << 10) }, - { " ###" - " ###" - " ``##" - "##` " - "## ", - { GO_LEFT, GO_DOWN, 0, 0 }, 2, - (unsigned) (1 << 4 | 1 << 8 | 1 << 9 | 1 << 10) }, - { "## " - "##`##" - " ``##" - " ####" - " ####", - { GO_LEFT, GO_UP, 0, 0 }, 2, - (unsigned) (1 << 5 | 1 << 6 | 1 << 9 | 1 << 10) }, - { "##`##" - "##`##" - "`````" - " ### " - " ### ", - { GO_LEFT, GO_UP, GO_RIGHT, 0 }, 3, - (unsigned) 1 << 6 }, - { " `##" - "##`##" - "##```" - "##`##" - " `##", - { GO_UP, GO_RIGHT, GO_DOWN, 0}, 3, - (unsigned) (1 << 7) }, - { " ### " - " ### " - "`````" - "##`##" - "##`##", - { GO_LEFT, GO_RIGHT, GO_DOWN, 0}, 3, - (unsigned) (1 << 8) }, - { "##` " - "##`##" - "```##" - "##`##" - "##` ", - { GO_UP, GO_DOWN, GO_LEFT, 0 }, 3, - (unsigned) (1 << 9) }, - { "##`##" - "##`##" - "`````" - "##`##" - "##`##", - { GO_UP, GO_DOWN, GO_LEFT, GO_RIGHT }, 4, - (unsigned) (1 << 10) } + { + " # " " # " " ``` " " # " " # ", { + GO_LEFT, GO_RIGHT, 0, 0}, 2, + (unsigned) (1 << 0 | 1 << 6 | 1 << 8 | 1 << 10)}, { + " " " ` " "##`##" " ` " " ", { + GO_UP, GO_DOWN, 0, 0}, 2, + (unsigned) (1 << 1 | 1 << 7 | 1 << 9 | 1 << 10)}, { + " ##" "##`##" "##`` " "#### " "#### ", { + GO_UP, GO_RIGHT, 0, 0}, 2, + (unsigned) (1 << 2 | 1 << 6 | 1 << 7 | 1 << 10)}, { + "#### " "#### " "##`` " "##`##" " ##", { + GO_RIGHT, GO_DOWN, 0, 0}, 2, + (unsigned) (1 << 3 | 1 << 7 | 1 << 8 | 1 << 10)}, { + " ###" " ###" " ``##" "##` " "## ", { + GO_LEFT, GO_DOWN, 0, 0}, 2, + (unsigned) (1 << 4 | 1 << 8 | 1 << 9 | 1 << 10)}, { + "## " "##`##" " ``##" " ####" " ####", { + GO_LEFT, GO_UP, 0, 0}, 2, + (unsigned) (1 << 5 | 1 << 6 | 1 << 9 | 1 << 10)}, { + "##`##" "##`##" "`````" " ### " " ### ", { + GO_LEFT, GO_UP, GO_RIGHT, 0}, 3, (unsigned) 1 << 6}, { + " `##" "##`##" "##```" "##`##" " `##", { + GO_UP, GO_RIGHT, GO_DOWN, 0}, 3, (unsigned) (1 << 7)}, { + " ### " " ### " "`````" "##`##" "##`##", { + GO_LEFT, GO_RIGHT, GO_DOWN, 0}, 3, (unsigned) (1 << 8)}, { + "##` " "##`##" "```##" "##`##" "##` ", { + GO_UP, GO_DOWN, GO_LEFT, 0}, 3, (unsigned) (1 << 9)}, { + "##`##" "##`##" "`````" "##`##" "##`##", { + GO_UP, GO_DOWN, GO_LEFT, GO_RIGHT}, 4, (unsigned) (1 << 10)} }; /* probability array for each of the tiles */ #define MAXTILEPROB 22 static const unsigned tileprob[MAXTILEPROB] = - { 0, 0, 0, 1, 1, 2, 3, 4, 5, 6, 6, 6, 7, 7, 8, 8, 8, 9, 9, 10, 10, 10 }; + { 0, 0, 0, 1, 1, 2, 3, 4, 5, 6, 6, 6, 7, 7, 8, 8, 8, 9, 9, 10, 10, 10 }; + + +static int creatlevelblock (lev_t * level, const unsigned x, + const unsigned y); + +typedef struct +{ + unsigned int x, y; + int eaten; +} bonus_dot; -static int creatlevelblock(lev_t *level, const unsigned x, - const unsigned y); +enum +{ TOP_LEFT, TOP_RIGHT, BOTTOM_LEFT, BOTTOM_RIGHT }; +static bonus_dot bonus_dots[NUM_BONUS_DOTS]; /* Sets a block in the level to a certain state. */ -static void -setblockto(lev_t *level, const unsigned x, const unsigned y, - const char c) +static void +setblockto (lev_t * level, const unsigned x, const unsigned y, const char c) { - if (!(x < LEVWIDTH && y < LEVHEIGHT)) return; - (*level)[y][x] = c; + if (!(x < LEVWIDTH && y < LEVHEIGHT)) + return; + (*level)[y][x] = c; } /* check if a block is set */ -static int -checkset(lev_t *level, const unsigned x, const unsigned y) +static int +checkset (lev_t * level, const unsigned x, const unsigned y) { - if (!(x < LEVWIDTH && y < LEVHEIGHT) || - (*level)[y][x] == BLOCK_WALL || - (*level)[y][x] == BLOCK_GHOST_ONLY) - return True; - return False; + if (!(x < LEVWIDTH && y < LEVHEIGHT) || + (*level)[y][x] == BLOCK_WALL || (*level)[y][x] == BLOCK_GHOST_ONLY) + return True; + return False; } /* Check if a block is not set */ -static int -checksetout(lev_t *level, const unsigned x, const unsigned y) +static int +checksetout (lev_t * level, const unsigned x, const unsigned y) { - if (!(x < LEVWIDTH && y < LEVHEIGHT) || - checkset(level, x, y) != 0) - return True; + if (!(x < LEVWIDTH && y < LEVHEIGHT) || checkset (level, x, y) != 0) + return True; - return False; + return False; } /* Check if a block cannot be set */ -static int -checkunsetdef(lev_t *level, const unsigned x, const unsigned y) +static int +checkunsetdef (lev_t * level, const unsigned x, const unsigned y) { - if (!(x < LEVWIDTH && y < LEVHEIGHT)) - return False; - if ((*level)[y][x] == BLOCK_DOT_1) return True; + if (!(x < LEVWIDTH && y < LEVHEIGHT)) return False; + if ((*level)[y][x] == BLOCK_DOT_1) + return True; + return False; } /* Initializes a level to empty state. */ -static void -clearlevel(lev_t *level) +static void +clearlevel (lev_t * level) { - unsigned x, y; + unsigned x, y; - for (y = 0; y < LEVHEIGHT ; y++) - for (x = 0 ; x < LEVWIDTH ; x++) - (*level)[y][x] = BLOCK_EMPTY; + for (y = 0; y < LEVHEIGHT; y++) + for (x = 0; x < LEVWIDTH; x++) + (*level)[y][x] = BLOCK_EMPTY; } /* Changes a level from the level creation structure ((array to array) to array. */ static void -copylevel(char *dest, lev_t *level) +copylevel (char *dest, lev_t * level) { - unsigned x, y; + unsigned x, y; - for (y = 0; y < LEVHEIGHT ; y++) - for (x = 0; x < LEVWIDTH ; x++) - dest[y * LEVWIDTH + x] = (*level)[y][x]; + for (y = 0; y < LEVHEIGHT; y++) + for (x = 0; x < LEVWIDTH; x++) + dest[y * LEVWIDTH + x] = (*level)[y][x]; } /* Creates a jail to work around, so we can finish it later. */ -static void -createjail(lev_t *level, const unsigned width, - const unsigned height) +static void +createjail (lev_t * level, const unsigned width, const unsigned height) { - unsigned x, y, xstart, xend, ystart, yend; + unsigned x, y, xstart, xend, ystart, yend; + + if (LEVWIDTH < width || LEVHEIGHT < height) + return; - if (LEVWIDTH < width || LEVHEIGHT < height) return; + xstart = LEVWIDTH / 2 - width / 2; + xend = LEVWIDTH / 2 + width / 2; + ystart = LEVHEIGHT / 2 - height / 2; + yend = LEVHEIGHT / 2 + height / 2; - xstart = LEVWIDTH/2 - width/2; - xend = LEVWIDTH/2 + width/2; - ystart = LEVHEIGHT/2 - height/2; - yend = LEVHEIGHT/2 + height/2; + for (y = ystart - 1; y < yend + 1; y++) + for (x = xstart - 1; x < xend + 1; x++) + setblockto (level, x, y, BLOCK_DOT_1); - for (y = ystart - 1; y < yend + 1; y++) - for (x = xstart - 1; x < xend + 1; x++) - setblockto(level, x, y, BLOCK_DOT_1); + for (y = ystart; y < yend; y++) + for (x = xstart; x < xend; x++) + setblockto (level, x, y, BLOCK_WALL); +} - for (y = ystart; y < yend; y++) - for (x = xstart; x < xend; x++) - setblockto(level, x, y, BLOCK_WALL); +void +get_jail_opening ( int *x, int *y) +{ + int xstart = LEVWIDTH / 2 - JAILWIDTH / 2; + int ystart = LEVHEIGHT / 2 - JAILHEIGHT / 2; + *x = xstart + JAILWIDTH / 2; + *y = ystart; } /* Finishes a jail so it is empty and the ghostpass is on top. */ -static void -finishjail(lev_t *level, const unsigned width, - const unsigned height) +static void +finishjail (lev_t * level, const unsigned width, const unsigned height) { - unsigned x, y, xstart, xend, ystart, yend; + unsigned x, y, xstart, xend, ystart, yend; - xstart = LEVWIDTH/2 - width/2; - xend = LEVWIDTH/2 + width/2; - ystart = LEVHEIGHT/2 - height/2; - yend = LEVHEIGHT/2 + height/2; + xstart = LEVWIDTH / 2 - width / 2; + xend = LEVWIDTH / 2 + width / 2; + ystart = LEVHEIGHT / 2 - height / 2; + yend = LEVHEIGHT / 2 + height / 2; - for (y = ystart + 1; y < yend - 1 ; y++) - for (x = xstart + 1; x < xend - 1; x++) - setblockto(level, x, y, BLOCK_EMPTY); + for (y = ystart + 1; y < yend - 1; y++) + for (x = xstart + 1; x < xend - 1; x++) + setblockto (level, x, y, BLOCK_EMPTY); - for (x = xstart - 1; x < xend + 1; x++) { - setblockto(level, x, ystart - 1, BLOCK_EMPTY); - setblockto(level, x, yend, BLOCK_EMPTY); - } + for (x = xstart - 1; x < xend + 1; x++) { + setblockto (level, x, ystart - 1, BLOCK_EMPTY); + setblockto (level, x, yend, BLOCK_EMPTY); + } - for (y = ystart - 1; y < yend + 1; y++) { - setblockto(level, xstart - 1, y, BLOCK_EMPTY); - setblockto(level, xend, y, BLOCK_EMPTY); - } + for (y = ystart - 1; y < yend + 1; y++) { + setblockto (level, xstart - 1, y, BLOCK_EMPTY); + setblockto (level, xend, y, BLOCK_EMPTY); + } - setblockto(level, xstart + width/2 - 1, ystart, BLOCK_GHOST_ONLY); - setblockto(level, xstart + width/2, ystart, BLOCK_GHOST_ONLY); + setblockto (level, xstart + width / 2 - 1, ystart, BLOCK_GHOST_ONLY); + setblockto (level, xstart + width / 2, ystart, BLOCK_GHOST_ONLY); } /* Tries to set a block at a certain position. Returns true if possible, and leaves level in new state (plus block), or False if not possible, and leaves level in unpredictable state. */ -static int -tryset(lev_t *level, const unsigned xpos, const unsigned ypos, - const char *block) +static int +tryset (lev_t * level, const unsigned xpos, const unsigned ypos, + const char *block) { - register unsigned x, y; - register char locchar; - int xstart, ystart; - unsigned xend, yend; - - if ((*level)[ypos][xpos] == BLOCK_DOT_1) return False; - - xstart = xpos - 2; - ystart = ypos - 2; - - for (y = 0 ; y < TILEHEIGHT ; y++) - for (x = 0 ; x < TILEWIDTH ; x++) { - locchar = block[y * TILEWIDTH + x]; - if (locchar == BLOCK_EMPTY) - continue; - if (locchar == BLOCK_DOT_1 && - (xstart + x < 1 || - xstart + x >= LEVWIDTH - 1 || - ystart + y < 1 || - ystart + y >= LEVHEIGHT - 1 || - checkset(level, xstart + x, ystart + y) != 0)) - return False; - else if (locchar == BLOCK_WALL && - (xstart + x > 1 && - xstart + x < LEVWIDTH && - ystart + y > 1 && - ystart + y < LEVHEIGHT - 1) && - checkunsetdef(level, - (unsigned)(xstart + x), - (unsigned)(ystart + y)) != 0) - return False; - } + register unsigned x, y; + register char locchar; + int xstart, ystart; + unsigned xend, yend; - /* and set the block in place */ - - xend = (xstart + TILEWIDTH < LEVWIDTH - 1) ? - TILEWIDTH : LEVWIDTH - xstart - 2; - yend = (ystart + TILEHEIGHT < LEVHEIGHT - 1) ? - TILEHEIGHT : LEVHEIGHT - ystart - 2; - - for (y = (ystart < 1) ? (unsigned)(1 - ystart) : 0U ; - y < yend ; y++) - for (x = (xstart < 1) ? - (unsigned)(1 - xstart) : 0U ; - x < xend ; x++) { - locchar = block[y * TILEWIDTH + x]; - if ((locchar == BLOCK_WALL) && - ((*level)[ystart + y][xstart + x] == BLOCK_EMPTY)) { - (*level)[ystart + y][xstart + x] = BLOCK_WALL; - (*level)[ystart + y] - [LEVWIDTH - (xstart + x + 1)] = - BLOCK_WALL; - } - } + if ((*level)[ypos][xpos] == BLOCK_DOT_1) + return False; - (*level)[ypos][xpos] = BLOCK_DOT_1; - (*level)[ypos][LEVWIDTH-xpos-1] = BLOCK_DOT_1; + xstart = xpos - 2; + ystart = ypos - 2; + + for (y = 0; y < TILEHEIGHT; y++) + for (x = 0; x < TILEWIDTH; x++) { + locchar = block[y * TILEWIDTH + x]; + if (locchar == BLOCK_EMPTY) + continue; + if (locchar == BLOCK_DOT_1 && + (xstart + x < 1 || + xstart + x >= LEVWIDTH - 1 || + ystart + y < 1 || + ystart + y >= LEVHEIGHT - 1 || + checkset (level, xstart + x, ystart + y) != 0)) + return False; + else if (locchar == BLOCK_WALL && + (xstart + x > 1 && + xstart + x < LEVWIDTH && + ystart + y > 1 && + ystart + y < LEVHEIGHT - 1) && + checkunsetdef (level, + (unsigned) (xstart + x), + (unsigned) (ystart + y)) != 0) + return False; + } - return True; + /* and set the block in place */ + + xend = (xstart + TILEWIDTH < LEVWIDTH - 1) ? + TILEWIDTH : LEVWIDTH - xstart - 2; + yend = (ystart + TILEHEIGHT < LEVHEIGHT - 1) ? + TILEHEIGHT : LEVHEIGHT - ystart - 2; + + for (y = (ystart < 1) ? (unsigned) (1 - ystart) : 0U; y < yend; y++) + for (x = (xstart < 1) ? (unsigned) (1 - xstart) : 0U; x < xend; x++) { + locchar = block[y * TILEWIDTH + x]; + if ((locchar == BLOCK_WALL) && + ((*level)[ystart + y][xstart + x] == BLOCK_EMPTY)) { + (*level)[ystart + y][xstart + x] = BLOCK_WALL; + (*level)[ystart + y] + [LEVWIDTH - (xstart + x + 1)] = BLOCK_WALL; + } + } + + (*level)[ypos][xpos] = BLOCK_DOT_1; + (*level)[ypos][LEVWIDTH - xpos - 1] = BLOCK_DOT_1; + + return True; } /* Tries certain combinations of blocks in the level recursively. */ static unsigned -nextstep(lev_t *level, const unsigned x, const unsigned y, - unsigned dirvec[], unsigned ndirs) +nextstep (lev_t * level, const unsigned x, const unsigned y, + unsigned dirvec[], unsigned ndirs) { - unsigned dirpos, curdir, inc = 0; - int ret = 0; + unsigned dirpos, curdir, inc = 0; + int ret = 0; - while (ndirs > 0) { - ndirs--; - if (ndirs == 0) { - curdir = dirvec[0]; - } - else { - dirpos = NRAND(ndirs); - curdir = dirvec[dirpos]; - /* nope, no bufoverflow, but ndirs - 1 + 1 */ - dirvec[dirpos] = dirvec[ndirs]; - dirvec[ndirs] = curdir; - } + while (ndirs > 0) { + ndirs--; + if (ndirs == 0) { + curdir = dirvec[0]; + } + else { + dirpos = NRAND (ndirs); + curdir = dirvec[dirpos]; + /* nope, no bufoverflow, but ndirs - 1 + 1 */ + dirvec[dirpos] = dirvec[ndirs]; + dirvec[ndirs] = curdir; + } - switch (curdir) { - case GO_UP: - if (y < 1 || - (ret = creatlevelblock(level, x, y - 1)) - == 0) - return 0; - break; - case GO_RIGHT: - if (x > LEVWIDTH - 2 || - (ret = creatlevelblock(level, x + 1, y)) - == 0) - return 0; - break; - case GO_DOWN: - if (y > LEVHEIGHT - 2 || - (ret = creatlevelblock(level, x, y + 1)) - == 0) - return 0; - break; - case GO_LEFT: - if (x < 1 || - (ret = creatlevelblock(level, x - 1, y)) - == 0) - return 0; - } - if (ret != -1) - inc += (unsigned)ret; + switch (curdir) { + case GO_UP: + if (y < 1 || (ret = creatlevelblock (level, x, y - 1)) + == 0) + return 0; + break; + case GO_RIGHT: + if (x > LEVWIDTH - 2 || (ret = creatlevelblock (level, x + 1, y)) + == 0) + return 0; + break; + case GO_DOWN: + if (y > LEVHEIGHT - 2 || (ret = creatlevelblock (level, x, y + 1)) + == 0) + return 0; + break; + case GO_LEFT: + if (x < 1 || (ret = creatlevelblock (level, x - 1, y)) + == 0) + return 0; } - if (inc == 0) inc = 1; - return inc; + if (ret != -1) + inc += (unsigned) ret; + } + if (inc == 0) + inc = 1; + return inc; } -static int -creatlevelblock(lev_t *level, const unsigned x, const unsigned y) +static int +creatlevelblock (lev_t * level, const unsigned x, const unsigned y) { - unsigned tried = GETNB(TILES_COUNT); - unsigned tilenr; - unsigned ret; - lev_t savedlev; + unsigned tried = GETNB (TILES_COUNT); + unsigned tilenr; + unsigned ret; + lev_t savedlev; - if (!((x < LEVWIDTH) && (y < LEVHEIGHT))) - return 0; - - if (checkunsetdef(level, x, y) != 0) - return -1; - - if (x == 0) - tried &= ~(1<<0); - else if (x == 1) - tried &= ~(1<<4 | 1<<5 | 1<<6 | 1<<8 | 1<<9 | 1<<10); - else if (x == LEVWIDTH-1) - tried &= ~(1<<0); - else if (x == LEVWIDTH-2) - tried &= ~(1<<2 | 1<<3 | 1<<6 | 1<<7 | 1<<8 | 1<<10); - - if (y == 1) - tried &= ~(1<<2 | 1<<5 | 1<<6 | 1<<7 | 1<<9 | 1<<10); - else if (y == 0) - tried &= ~(1<<1); - else if (y == LEVHEIGHT-1) - tried &= ~(1<<1); - else if (y == LEVHEIGHT-2) - tried &= ~(1<<3 | 1<<4 | 1<<7 | 1<<8 | 1<<9 | 1<<10); - - /* make a copy of the current level, so we can go back on the stack */ - (void) memcpy(&savedlev, level, sizeof(lev_t)); - - /* while there are still some blocks left to try */ - while (tried != 0x00) { - tilenr = tileprob[NRAND(MAXTILEPROB)]; - - if (!TESTNB(tried, tilenr)) - continue; - - if (tryset(level, x, y, tiles[tilenr].block) != 0) { - if ((ret = nextstep(level, x, y, tiles[tilenr].dirvec, - tiles[tilenr].ndirs)) != 0) { - return ret + 1; - } - (void) memcpy(level, &savedlev, sizeof(lev_t)); - } - tried &= ~(tiles[tilenr].simular_to); - } + if (!((x < LEVWIDTH) && (y < LEVHEIGHT))) return 0; + + if (checkunsetdef (level, x, y) != 0) + return -1; + + if (x == 0) + tried &= ~(1 << 0); + else if (x == 1) + tried &= ~(1 << 4 | 1 << 5 | 1 << 6 | 1 << 8 | 1 << 9 | 1 << 10); + else if (x == LEVWIDTH - 1) + tried &= ~(1 << 0); + else if (x == LEVWIDTH - 2) + tried &= ~(1 << 2 | 1 << 3 | 1 << 6 | 1 << 7 | 1 << 8 | 1 << 10); + + if (y == 1) + tried &= ~(1 << 2 | 1 << 5 | 1 << 6 | 1 << 7 | 1 << 9 | 1 << 10); + else if (y == 0) + tried &= ~(1 << 1); + else if (y == LEVHEIGHT - 1) + tried &= ~(1 << 1); + else if (y == LEVHEIGHT - 2) + tried &= ~(1 << 3 | 1 << 4 | 1 << 7 | 1 << 8 | 1 << 9 | 1 << 10); + + /* make a copy of the current level, so we can go back on the stack */ + (void) memcpy (&savedlev, level, sizeof (lev_t)); + + /* while there are still some blocks left to try */ + while (tried != 0x00) { + tilenr = tileprob[NRAND (MAXTILEPROB)]; + + if (!TESTNB (tried, tilenr)) + continue; + + if (tryset (level, x, y, tiles[tilenr].block) != 0) { + if ((ret = nextstep (level, x, y, tiles[tilenr].dirvec, + tiles[tilenr].ndirs)) != 0) { + return ret + 1; + } + (void) memcpy (level, &savedlev, sizeof (lev_t)); + } + tried &= ~(tiles[tilenr].simular_to); + } + return 0; } /* Fills up all empty space so there is wall everywhere. */ -static void -filllevel(lev_t *level) +static void +filllevel (lev_t * level) { - unsigned x, y; + unsigned x, y; - for (y = 0; y < LEVHEIGHT; y++) - for (x = 0; x < LEVWIDTH; x++) - if ((*level)[y][x] == BLOCK_EMPTY) - (*level)[y][x] = BLOCK_WALL; + for (y = 0; y < LEVHEIGHT; y++) + for (x = 0; x < LEVWIDTH; x++) + if ((*level)[y][x] == BLOCK_EMPTY) + (*level)[y][x] = BLOCK_WALL; +} + + +/* Check to see if the x and y value are in the corners. + * we could probable compute these values once and avoid + * go through the loops every time. + */ +static void +top_left (lev_t * level, unsigned int *passed_x, unsigned int *passed_y) +{ + int x, y; + for (y = 0; y < LEVHEIGHT; y++) + for (x = 0; x < LEVWIDTH; x++) { + if (checkset (level, x, y) == 0) { + *passed_x = x; + *passed_y = y; + return; + } + } +} + + +static void +bottom_left (lev_t * level, unsigned int *passed_x, unsigned int *passed_y) +{ + int x, y; + for (y = LEVHEIGHT; y > -1; y--) + for (x = 0; x < LEVWIDTH; x++) { + if (checkset (level, x, y) == 0) { + *passed_x = x; + *passed_y = y; + return; + } + } +} + +static void +top_right (lev_t * level, unsigned int *passed_x, unsigned int *passed_y) +{ + int x, y; + + for (y = 0; y < LEVHEIGHT; y++) + for (x = LEVWIDTH; x >= 0; x--) { + if (checkset (level, x, y) == 0) { + *passed_x = x; + *passed_y = y; + return; + } + } +} + +static void +bottom_right (lev_t * level, unsigned int *passed_x, unsigned int *passed_y) +{ + int x, y; + + for (y = LEVHEIGHT; y >= 0; y--) + for (x = LEVWIDTH; x >= 0; x--) { + if (checkset (level, x, y) == 0) { + *passed_x = x; + *passed_y = y; + return; + } + } +} + +static void +init_bonus_dots (lev_t * level) +{ + unsigned int x, y; + top_left (level, &x, &y); + bonus_dots[TOP_LEFT].x = x; + bonus_dots[TOP_LEFT].y = y; + bonus_dots[TOP_LEFT].eaten = False; + top_right (level, &x, &y); + bonus_dots[TOP_RIGHT].x = x; + bonus_dots[TOP_RIGHT].y = y; + bonus_dots[TOP_RIGHT].eaten = False; + bottom_left (level, &x, &y); + bonus_dots[BOTTOM_LEFT].x = x; + bonus_dots[BOTTOM_LEFT].y = y; + bonus_dots[BOTTOM_LEFT].eaten = False; + bottom_right (level, &x, &y); + bonus_dots[BOTTOM_RIGHT].x = x; + bonus_dots[BOTTOM_RIGHT].y = y; + bonus_dots[BOTTOM_RIGHT].eaten = False; +} + +int +is_bonus_dot (int x, int y, int *idx) +{ + int ret = False; + int i; + for (i = 0; i <= NUM_BONUS_DOTS; i++) { +/* fprintf(stderr,"is bonus: passed x (%d, %d) bonus (%d, %d)\n",x,y,bonus_dots[i].x, bonus_dots[i].y); */ + if (x == bonus_dots[i].x && y == bonus_dots[i].y) { + ret = True; + *idx = i; + break; + } + } + return ret; +} + +static void +check_bonus_idx (int idx) +{ + assert (0 <= idx && idx <= NUM_BONUS_DOTS); +} + +int +bonus_dot_eaten (int idx) +{ + check_bonus_idx (idx); + return bonus_dots[idx].eaten; +} + +void +eat_bonus_dot (int idx) +{ + check_bonus_idx (idx); + bonus_dots[idx].eaten = True; +} + +void +bonus_dot_pos (int idx, int *x, int *y) +{ + check_bonus_idx (idx); + *x = bonus_dots[idx].x; + *y = bonus_dots[idx].y; } /* Changes a level from a simple wall/nowall to a wall with rounded corners and such. Stupid algorithm, could be done better! */ -static void -frmtlevel(lev_t *level) +static void +frmtlevel (lev_t * level) { - lev_t frmtlev; - register unsigned x, y; - register unsigned poscond; - register unsigned poscond2; - - clearlevel(&frmtlev); - - for (y = 0; y < LEVHEIGHT; y++) - for (x = 0; x < LEVWIDTH; x++) { - - if (checkset(level, x, y) == 0) { - frmtlev[y][x] = BLOCK_DOT_2; - continue; - } - - if ((*level)[y][x] == BLOCK_GHOST_ONLY) { - frmtlev[y][x] = BLOCK_GHOST_ONLY; - continue; - } - - poscond = - (checksetout(level, x - 1, y - 1) != 0 ? - 0x01U : 0U) | - (checksetout(level, x + 1, y - 1) != 0 ? - 0x02U : 0U) | - (checksetout(level, x + 1, y + 1) != 0 ? - 0x04U : 0U) | - (checksetout(level, x - 1, y + 1) != 0 ? - 0x08U : 0U); - - poscond2 = - (checksetout(level, x - 1, y) != 0 ? - 0x01U : 0) | - (checksetout(level, x, y - 1) != 0 ? - 0x02U : 0) | - (checksetout(level, x + 1, y) != 0 ? - 0x04U : 0) | - (checksetout(level, x, y + 1) != 0 ? - 0x08U : 0); - - switch (poscond) { - /* completely filled */ - case 0x01U | 0x02U | 0x04U | 0x08U: - frmtlev[y][x] = BLOCK_EMPTY; continue; - - /* left to top corner */ - case 0x01U: - frmtlev[y][x] = BLOCK_WALL_TL; continue; - /* top to right corner */ - case 0x02U: - frmtlev[y][x] = BLOCK_WALL_TR; continue; - /* right to bottom corner */ - case 0x04U: - frmtlev[y][x] = BLOCK_WALL_BR; continue; - /* bottom to left corner */ - case 0x08U: - frmtlev[y][x] = BLOCK_WALL_BL; continue; - } - - switch (poscond2) { - case 0x01U | 0x04U: - case 0x01U | 0x04U | 0x08U: - case 0x01U | 0x04U | 0x02U: - frmtlev[y][x] = BLOCK_WALL_HO; continue; - case 0x02U | 0x08U: - case 0x02U | 0x08U | 0x01U: - case 0x02U | 0x08U | 0x04U: - frmtlev[y][x] = BLOCK_WALL_VE; continue; - case 0x01U | 0x02U: - frmtlev[y][x] = BLOCK_WALL_TL; continue; - case 0x02U | 0x04U: - frmtlev[y][x] = BLOCK_WALL_TR; continue; - case 0x04U | 0x08U: - frmtlev[y][x] = BLOCK_WALL_BR; continue; - case 0x08U | 0x01U: - frmtlev[y][x] = BLOCK_WALL_BL; continue; - } - switch (poscond) { - case 0x02U | 0x04U | 0x08U: - frmtlev[y][x] = BLOCK_WALL_TL; continue; - case 0x01U | 0x04U | 0x08U: - frmtlev[y][x] = BLOCK_WALL_TR; continue; - case 0x01U | 0x02U | 0x08U: - frmtlev[y][x] = BLOCK_WALL_BR; continue; - case 0x01U | 0x02U | 0x04U: - frmtlev[y][x] = BLOCK_WALL_BL; continue; - } - frmtlev[y][x] = BLOCK_EMPTY; + lev_t frmtlev; + int x, y; + int idx; + register unsigned poscond; + register unsigned poscond2; + + clearlevel (&frmtlev); + init_bonus_dots (level); + for (y = 0; y < LEVHEIGHT; y++) + for (x = 0; x < LEVWIDTH; x++) { + + if (checkset (level, x, y) == 0) { + if (is_bonus_dot (x, y, &idx)) { + frmtlev[y][x] = BLOCK_DOT_BONUS; } - (void) memcpy((lev_t *)level, (lev_t *)&frmtlev, sizeof(lev_t)); + else { + frmtlev[y][x] = BLOCK_DOT_2; + } + continue; + } + + if ((*level)[y][x] == BLOCK_GHOST_ONLY) { + frmtlev[y][x] = BLOCK_GHOST_ONLY; + continue; + } + + poscond = + (checksetout (level, x - 1, y - 1) != 0 ? + 0x01U : 0U) | + (checksetout (level, x + 1, y - 1) != 0 ? + 0x02U : 0U) | + (checksetout (level, x + 1, y + 1) != 0 ? + 0x04U : 0U) | + (checksetout (level, x - 1, y + 1) != 0 ? 0x08U : 0U); + + poscond2 = + (checksetout (level, x - 1, y) != 0 ? + 0x01U : 0) | + (checksetout (level, x, y - 1) != 0 ? + 0x02U : 0) | + (checksetout (level, x + 1, y) != 0 ? + 0x04U : 0) | + (checksetout (level, x, y + 1) != 0 ? 0x08U : 0); + + switch (poscond) { + /* completely filled */ + case 0x01U | 0x02U | 0x04U | 0x08U: + frmtlev[y][x] = BLOCK_EMPTY; + continue; + + /* left to top corner */ + case 0x01U: + frmtlev[y][x] = BLOCK_WALL_TL; + continue; + /* top to right corner */ + case 0x02U: + frmtlev[y][x] = BLOCK_WALL_TR; + continue; + /* right to bottom corner */ + case 0x04U: + frmtlev[y][x] = BLOCK_WALL_BR; + continue; + /* bottom to left corner */ + case 0x08U: + frmtlev[y][x] = BLOCK_WALL_BL; + continue; + } + + switch (poscond2) { + case 0x01U | 0x04U: + case 0x01U | 0x04U | 0x08U: + case 0x01U | 0x04U | 0x02U: + frmtlev[y][x] = BLOCK_WALL_HO; + continue; + case 0x02U | 0x08U: + case 0x02U | 0x08U | 0x01U: + case 0x02U | 0x08U | 0x04U: + frmtlev[y][x] = BLOCK_WALL_VE; + continue; + case 0x01U | 0x02U: + frmtlev[y][x] = BLOCK_WALL_TL; + continue; + case 0x02U | 0x04U: + frmtlev[y][x] = BLOCK_WALL_TR; + continue; + case 0x04U | 0x08U: + frmtlev[y][x] = BLOCK_WALL_BR; + continue; + case 0x08U | 0x01U: + frmtlev[y][x] = BLOCK_WALL_BL; + continue; + } + switch (poscond) { + case 0x02U | 0x04U | 0x08U: + frmtlev[y][x] = BLOCK_WALL_TL; + continue; + case 0x01U | 0x04U | 0x08U: + frmtlev[y][x] = BLOCK_WALL_TR; + continue; + case 0x01U | 0x02U | 0x08U: + frmtlev[y][x] = BLOCK_WALL_BR; + continue; + case 0x01U | 0x02U | 0x04U: + frmtlev[y][x] = BLOCK_WALL_BL; + continue; + } + frmtlev[y][x] = BLOCK_EMPTY; + } + (void) memcpy ((lev_t *) level, (lev_t *) & frmtlev, sizeof (lev_t)); } /* Counts the number of dots in the level, and returns that number. */ static unsigned -countdots(ModeInfo * mi) +countdots (ModeInfo * mi) { - pacmangamestruct *pp = &pacmangames[MI_SCREEN(mi)]; - unsigned i, count = 0; + pacmangamestruct *pp = &pacmangames[MI_SCREEN (mi)]; + unsigned i, count = 0; - for (i = 0 ; i < LEVWIDTH*LEVHEIGHT ; i++) - if (pp->level[i] == BLOCK_DOT_2) count++; + for (i = 0; i < LEVWIDTH * LEVHEIGHT; i++) + if (pp->level[i] == BLOCK_DOT_2 || pp->level[i] == BLOCK_DOT_BONUS) + count++; - return count; + return count; } /* Creates a new level, and places that in the pacmangamestruct. */ int -createnewlevel(ModeInfo * mi) +createnewlevel (ModeInfo * mi) { - pacmangamestruct *pp = &pacmangames[MI_SCREEN(mi)]; - lev_t *level; - unsigned dirvec[1] = { GO_UP }; - unsigned ret = 0, i = 0; - - if ((level = (lev_t *)calloc(1, sizeof(lev_t))) == NULL) - return i; - - if (NRAND(2) == 0) { - - do { - clearlevel(level); - createjail(level, JAILWIDTH, JAILHEIGHT); - if ((ret = nextstep(level, LEVWIDTH/2 - 1, - LEVHEIGHT/2 - JAILHEIGHT/2 - 3, - dirvec, 1)) == 0) { - (void) free((void *) level); - return i; - } - } while (ret * 100 < (LEVWIDTH * LEVHEIGHT * MINDOTPERC)); - - filllevel(level); - frmtlevel(level); - finishjail(level, JAILWIDTH, JAILHEIGHT); - } else { - (void) memcpy(level, stdlevel, sizeof(lev_t)); - frmtlevel(level); - i = 1; - } - copylevel(pp->level, level); - pp->dotsleft = countdots(mi); - - (void) free((void *) level); - return i; + pacmangamestruct *pp = &pacmangames[MI_SCREEN (mi)]; + lev_t *level; + unsigned dirvec[1] = { GO_UP }; + unsigned ret = 0, i = 0; + + if ((level = (lev_t *) calloc (1, sizeof (lev_t))) == NULL) + return i; + + if (NRAND (2) == 0) { + + do { + clearlevel (level); + createjail (level, JAILWIDTH, JAILHEIGHT); + if ((ret = nextstep (level, LEVWIDTH / 2 - 1, + LEVHEIGHT / 2 - JAILHEIGHT / 2 - 3, + dirvec, 1)) == 0) { + (void) free ((void *) level); + return i; + } + } while (ret * 100 < (LEVWIDTH * LEVHEIGHT * MINDOTPERC)); + + filllevel (level); + frmtlevel (level); + finishjail (level, JAILWIDTH, JAILHEIGHT); + } + else { + (void) memcpy (level, stdlevel, sizeof (lev_t)); + frmtlevel (level); + i = 1; + } + copylevel (pp->level, level); + pp->dotsleft = countdots (mi); + + (void) free ((void *) level); + return i; } /* Checks if a position is allowable for ghosts/pacs to enter. */ int -check_pos(pacmangamestruct *pp, int y, int x, int ghostpass) +check_pos (pacmangamestruct * pp, int y, int x, int ghostpass) { - if ((pp->level[y*LEVWIDTH + x] == BLOCK_DOT_2) || - (pp->level[y*LEVWIDTH + x] == BLOCK_EMPTY) || - ((pp->level[y*LEVWIDTH + x] == BLOCK_GHOST_ONLY) && ghostpass)) { - return 1; - } - return 0; + if ((pp->level[y * LEVWIDTH + x] == BLOCK_DOT_2) || + (pp->level[y * LEVWIDTH + x] == BLOCK_EMPTY) || + (pp->level[y * LEVWIDTH + x] == BLOCK_DOT_BONUS) || + ((pp->level[y * LEVWIDTH + x] == BLOCK_GHOST_ONLY) && ghostpass)) { + return 1; + } + return 0; } /* Checks if there is a dot on the specified position in the level. */ -int -check_dot(pacmangamestruct *pp, unsigned int x, unsigned int y) +int +check_dot (pacmangamestruct * pp, unsigned int x, unsigned int y) { - if (x >= LEVWIDTH || y >= LEVHEIGHT) return 0; - if (pp->level[y * LEVWIDTH + x] == BLOCK_DOT_2) return 1; - return 0; + if (x >= LEVWIDTH || y >= LEVHEIGHT) + return 0; + if (pp->level[y * LEVWIDTH + x] == BLOCK_DOT_2) + return 1; + return 0; }