Annotation of early-roguelike/arogue5/daemon.c, Revision 1.1
1.1 ! rubenllo 1: /*
! 2: * Contains functions for dealing with things that happen in the future.
! 3: *
! 4: * Advanced Rogue
! 5: * Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
! 6: * All rights reserved.
! 7: *
! 8: * Based on "Rogue: Exploring the Dungeons of Doom"
! 9: * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
! 10: * All rights reserved.
! 11: *
! 12: * See the file LICENSE.TXT for full copyright and licensing information.
! 13: */
! 14:
! 15: #include "curses.h"
! 16: #include "rogue.h"
! 17:
! 18: #define EMPTY 0
! 19: #define DAEMON -1
! 20:
! 21: #define _X_ { EMPTY }
! 22:
! 23: struct delayed_action d_list[MAXDAEMONS] = {
! 24: _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_
! 25: };
! 26: struct delayed_action f_list[MAXFUSES] = {
! 27: _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
! 28: _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_
! 29: };
! 30: int demoncnt = 0; /* number of active daemons */
! 31: int fusecnt = 0;
! 32:
! 33:
! 34: /*
! 35: * d_slot:
! 36: * Find an empty slot in the daemon list
! 37: */
! 38: struct delayed_action *
! 39: d_slot(void)
! 40: {
! 41: reg int i;
! 42: reg struct delayed_action *dev;
! 43:
! 44: for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
! 45: if (dev->d_type == EMPTY)
! 46: return dev;
! 47: return NULL;
! 48: }
! 49:
! 50: /*
! 51: * f_slot:
! 52: * Find an empty slot in the fuses list
! 53: */
! 54: struct delayed_action *
! 55: f_slot(void)
! 56: {
! 57: reg int i;
! 58: reg struct delayed_action *dev;
! 59:
! 60: for (i = 0, dev = f_list; i < MAXFUSES; i++, dev++)
! 61: if (dev->d_type == EMPTY)
! 62: return dev;
! 63: return NULL;
! 64: }
! 65:
! 66:
! 67:
! 68: /*
! 69: * find_slot:
! 70: * Find a particular slot in the table
! 71: */
! 72: struct delayed_action *
! 73: find_slot(void (*func)())
! 74: {
! 75: reg int i;
! 76: reg struct delayed_action *dev;
! 77:
! 78: for (i = 0, dev = f_list; i < MAXFUSES; i++, dev++)
! 79: if (dev->d_type != EMPTY && func == dev->d_func)
! 80: return dev;
! 81: return NULL;
! 82: }
! 83:
! 84:
! 85: /*
! 86: * start_daemon:
! 87: * Start a daemon, takes a function.
! 88: */
! 89: void
! 90: start_daemon(void (*func)(), void *arg, int type)
! 91: {
! 92: reg struct delayed_action *dev;
! 93:
! 94: dev = d_slot();
! 95: if (dev != NULL) {
! 96: dev->d_type = type;
! 97: dev->d_func = func;
! 98: dev->d_arg = arg;
! 99: dev->d_time = DAEMON;
! 100: demoncnt += 1; /* update count */
! 101: }
! 102: }
! 103:
! 104:
! 105: /*
! 106: * kill_daemon:
! 107: * Remove a daemon from the list
! 108: */
! 109: void
! 110: kill_daemon(void (*func)())
! 111: {
! 112: reg struct delayed_action *dev;
! 113: reg int i;
! 114:
! 115: for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++) {
! 116: if (dev->d_type != EMPTY && func == dev->d_func)
! 117: break;
! 118: }
! 119: if (i >= MAXDAEMONS) return; /* if not found, forget it */
! 120: /*
! 121: * Take it out of the list
! 122: */
! 123: dev->d_type = EMPTY;
! 124: dev->d_arg = NULL;
! 125: dev->d_func = NULL;
! 126: dev->d_time = 0;
! 127: demoncnt -= 1; /* update count */
! 128: }
! 129:
! 130:
! 131: /*
! 132: * do_daemons:
! 133: * Run all the daemons that are active with the current flag,
! 134: * passing the argument to the function.
! 135: */
! 136: void
! 137: do_daemons(int flag)
! 138: {
! 139: reg struct delayed_action *dev;
! 140:
! 141: /*
! 142: * Loop through the devil list
! 143: */
! 144: for (dev = d_list; dev <= &d_list[MAXDAEMONS-1]; dev++)
! 145: /*
! 146: * Executing each one, giving it the proper arguments
! 147: */
! 148: if (dev->d_func != NULL && dev->d_type == flag && dev->d_time == DAEMON)
! 149: (*dev->d_func)(dev->d_arg);
! 150: }
! 151:
! 152:
! 153: /*
! 154: * fuse:
! 155: * Start a fuse to go off in a certain number of turns
! 156: */
! 157: void
! 158: fuse(void (*func)(), void *arg, int time, int type)
! 159: {
! 160: reg struct delayed_action *wire;
! 161:
! 162: wire = f_slot();
! 163: if (wire != NULL) {
! 164: wire->d_type = type;
! 165: wire->d_func = func;
! 166: wire->d_arg = arg;
! 167: wire->d_time = time;
! 168: fusecnt += 1; /* update count */
! 169: }
! 170: }
! 171:
! 172:
! 173: /*
! 174: * lengthen:
! 175: * Increase the time until a fuse goes off
! 176: */
! 177: void
! 178: lengthen(void (*func)(), int xtime)
! 179: {
! 180: reg struct delayed_action *wire;
! 181:
! 182: if ((wire = find_slot(func)) == NULL)
! 183: return;
! 184: wire->d_time += xtime;
! 185: }
! 186:
! 187:
! 188: /*
! 189: * extinguish:
! 190: * Put out a fuse
! 191: */
! 192: void
! 193: extinguish(void (*func)())
! 194: {
! 195: reg struct delayed_action *wire;
! 196:
! 197: if ((wire = find_slot(func)) == NULL)
! 198: return;
! 199: wire->d_type = EMPTY;
! 200: wire->d_func = NULL;
! 201: wire->d_arg = NULL;
! 202: wire->d_time = 0;
! 203: fusecnt -= 1;
! 204: }
! 205:
! 206:
! 207: /*
! 208: * do_fuses:
! 209: * Decrement counters and start needed fuses
! 210: */
! 211: void
! 212: do_fuses(int flag)
! 213: {
! 214: reg struct delayed_action *wire;
! 215:
! 216: /*
! 217: * Step though the list
! 218: */
! 219: for (wire = f_list; wire <= &f_list[MAXFUSES-1]; wire++) {
! 220: /*
! 221: * Decrementing counters and starting things we want. We also need
! 222: * to remove the fuse from the list once it has gone off.
! 223: */
! 224: if(flag == wire->d_type && wire->d_time > 0 &&
! 225: --wire->d_time == 0) {
! 226: wire->d_type = EMPTY;
! 227: if (wire->d_func != NULL)
! 228: (*wire->d_func)(wire->d_arg);
! 229: fusecnt -= 1;
! 230: }
! 231: }
! 232: }
! 233:
! 234: /*
! 235: * activity:
! 236: * Show wizard number of demaons and memory blocks used
! 237: */
! 238: void
! 239: activity(void)
! 240: {
! 241: sprintf(outstring,"Daemons = %d : Fuses = %d : Memory Items = %d : Memory Used = %ld",
! 242: demoncnt,fusecnt,total,md_memused());
! 243: msg(outstring);
! 244: }
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