src/game.c

   1 /* Copyright (C) 1996-1997 Aleksey Volynskov
   2  * Copyright (C) 2011 Rambo
   3  * Copyright (C) 2020 SovietPony
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, version 3 of the License ONLY.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "glob.h"
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include "files.h"
  23 #include "memory.h"
  24 #include "sound.h"
  25 #include "view.h"
  26 #include "bmap.h"
  27 #include "fx.h"
  28 #include "switch.h"
  29 #include "weapons.h"
  30 #include "items.h"
  31 #include "dots.h"
  32 #include "smoke.h"
  33 #include "player.h"
  34 #include "monster.h"
  35 #include "menu.h"
  36 #include "misc.h"
  37 #include "map.h"
  38 #include "game.h"
  39 #include "config.h"
  40 #include "music.h"
  41 #include "a8.h"
  42 #include "error.h"
  43 #include "input.h"
  44
  45 #include "save.h"
  46
  47 #define LT_DELAY 8
  48 #define LT_HITTIME 6
  49
  50 #define GETIME 1092
  51
  52 byte transdraw;
  53 byte _2pl;
  54 byte g_dm;
  55 byte g_st = GS_TITLE;
  56 byte g_exit;
  57 byte g_map = 1;
  58 char g_music[8] = "MENU";
  59 dword g_time;
  60 int dm_pnum;
  61 int dm_pl1p;
  62 int dm_pl2p;
  63 pos_t dm_pos[100];
  64 byte cheat;
  65
  66 static void *telepsnd;
  67
  68 int lt_time;
  69 int lt_type;
  70 int lt_side;
  71 int lt_ypos;
  72 static int lt_force;
  73 static void *ltnsnd[2];
  74
  75 int g_trans;
  76 static int g_transt;
  77
  78 static void set_trans(int st) {
  79   switch(g_st) {
  80     case GS_ENDANIM: case GS_END2ANIM: case GS_DARKEN:
  81     case GS_BVIDEO: case GS_EVIDEO: case GS_END3ANIM:
  82       g_st=st;return;
  83   }
  84   switch(g_st=st) {
  85     case GS_ENDANIM: case GS_END2ANIM: case GS_DARKEN:
  86     case GS_BVIDEO: case GS_EVIDEO: case GS_END3ANIM:
  87       return;
  88   }
  89   g_trans=1;g_transt=0;
  90 }
  91
  92 void load_game (int n) {
  93   MUS_free();
  94   W_init();
  95   F_loadgame(n);
  96   set_trans(GS_GAME);
  97   pl1.drawst=0xFF;
  98   if(_2pl) pl2.drawst=0xFF;
  99   BM_remapfld();
 100   BM_clear(BM_PLR1|BM_PLR2|BM_MONSTER);
 101   BM_mark(&pl1.o,BM_PLR1);
 102   if(_2pl) BM_mark(&pl2.o,BM_PLR2);
 103   MN_mark();
 104   //MUS_start(music_time);
 105   MUS_start(0);
 106 }
 107
 108 void G_start (void) {
 109   char s[8];
 110   MUS_free();
 111   sprintf(s,"MAP%02u",(word)g_map);
 112   F_loadmap(s);
 113   set_trans(GS_GAME);
 114   pl1.drawst=0xFF;
 115   if(_2pl) pl2.drawst=0xFF;
 116   g_exit=0;
 117   itm_rtime=(g_dm)?1092:0;
 118   p_immortal=0;PL_JUMP=10;
 119   g_time=0;
 120   lt_time=1000;
 121   lt_force=1;
 122   if(!_2pl) pl1.lives=3;
 123   BM_remapfld();
 124   BM_clear(BM_PLR1|BM_PLR2|BM_MONSTER);
 125   BM_mark(&pl1.o,BM_PLR1);
 126   if(_2pl) BM_mark(&pl2.o,BM_PLR2);
 127   MN_mark();
 128   //MUS_start(music_time);
 129   MUS_start(0);
 130 }
 131
 132 #define GGAS_TOTAL (MN__LAST-MN_DEMON+16+10)
 133
 134 void G_init (void) {
 135   int i,j;
 136   char s[9];
 137
 138   logo("G_init: setup game resources ");
 139   logo_gas(5,GGAS_TOTAL);
 140   telepsnd=Z_getsnd("TELEPT");
 141   ltnsnd[0]=Z_getsnd("THUND1");
 142   ltnsnd[1]=Z_getsnd("THUND2");
 143   DOT_alloc();
 144   SMK_alloc();
 145   FX_alloc();
 146   WP_alloc();
 147   IT_alloc();
 148   SW_alloc();
 149   PL_alloc();
 150   MN_alloc();
 151   Z_initst();
 152   logo_gas(GGAS_TOTAL,GGAS_TOTAL);
 153   logo("\n");
 154   GM_init();
 155   pl1.color=0x70;
 156   pl2.color=0x60;
 157   g_trans=0;
 158 }
 159
 160 static int G_beg_video (void) {
 161 /*
 162   switch(g_map) {
 163     case 3: return A8_start("FALL");
 164     case 4: return A8_start("KORIDOR");
 165     case 5: return A8_start("SKULL");
 166     case 6: return A8_start("TORCHES");
 167     case 7: return A8_start("CACO");
 168     case 8: return A8_start("DARTS");
 169     case 9: return A8_start("FISH");
 170     case 10: return A8_start("TRAP");
 171     case 11: return A8_start("JAIL");
 172     case 12: return A8_start("MMON1");
 173     case 13: return A8_start("TOWER");
 174     case 14: return A8_start("SAPOG");
 175     case 15: return A8_start("SWITCH");
 176     case 16: return A8_start("ACCEL");
 177     case 17: return A8_start("MEAT");
 178     case 18: return A8_start("LEGION");
 179     case 19: return A8_start("CLOUDS");
 180   }
 181 */
 182   return 0;
 183 }
 184
 185
 186 static int G_end_video (void) {
 187 /*
 188   switch(g_map) {
 189     case 1: return A8_start("TRUBA");
 190     case 10: return A8_start("GOTCHA");
 191   }
 192 */
 193   return 0;
 194 }
 195
 196 void G_act (void) {
 197   static byte pcnt=0;
 198 /*
 199   if(g_trans) {
 200     if(g_transt==0) {
 201       V_setscr(NULL);memcpy(fx_scr1,scra,64000);
 202       V_setscr(fx_scr2);
 203       transdraw=1;G_draw();transdraw=0;
 204       V_setscr(scrbuf);
 205     }
 206     FX_trans1(g_transt*2);
 207     V_copytoscr(0,320,0,200);
 208     if(++g_transt>32) {
 209       g_trans=0;
 210     }
 211     return;
 212     g_trans=0;
 213   }
 214 */ g_trans=0;
 215
 216
 217   if(g_st==GS_BVIDEO || g_st==GS_EVIDEO) {
 218     if (!A8_nextframe() || lastkey == KEY_ESCAPE) {
 219       if (lastkey == KEY_ESCAPE) lastkey = KEY_UNKNOWN;
 220       A8_close();
 221       if(g_st==GS_BVIDEO) G_start();
 222       else goto inter;
 223     }
 224 //    V_copytoscr(0,SCRW,0,SCRH);//V_copytoscr(0,320,0,200);
 225     return;
 226   }else if(g_st==GS_ENDANIM || g_st==GS_END2ANIM || g_st==GS_END3ANIM) {
 227     if(!A8_nextframe()) {
 228       switch(g_st) {
 229         case GS_ENDANIM: g_st=GS_DARKEN;break;
 230         case GS_END2ANIM: g_st=GS_END3ANIM;A8_start("KONEC");break;
 231         case GS_END3ANIM: g_st=GS_ENDSCR;lastkey=0;break;
 232       }
 233       return;
 234     }
 235 //    V_copytoscr(0,SCRW,0,SCRH);//V_copytoscr(0,320,0,200);
 236     return;
 237   }else if(g_st==GS_DARKEN) {
 238       g_st=GS_END2ANIM;A8_start("CREDITS");
 239     return;
 240   }
 241
 242   if(GM_act()) return;
 243
 244
 245
 246   switch(g_st) {
 247         case GS_TITLE: case GS_ENDSCR:
 248
 249           return;
 250         case GS_INTER:
 251 #ifdef DEMO
 252           if(keys[0x39] || keys[0x1C] || keys[0x9C]) {
 253             set_trans(GS_TITLE);
 254           }
 255 #else
 256     if (I_pressed(KEY_SPACE) || I_pressed(KEY_RETURN) || I_pressed(KEY_KP_ENTER)) {
 257             if (!G_beg_video()) {
 258         G_start();
 259       } else {
 260               g_st = GS_BVIDEO;
 261         MUS_free();
 262             }
 263     }
 264 #endif
 265           return;
 266   }
 267
 268
 269   if(sky_type==2) {
 270     if(lt_time>LT_DELAY || lt_force) {
 271       if(!(rand()&31) || lt_force) {
 272         lt_force=0;
 273         lt_time=-LT_HITTIME;
 274         lt_type=rand()%2;
 275         lt_side=rand()&1;
 276         lt_ypos=rand()&31;
 277         Z_sound(ltnsnd[rand()&1],128);
 278       }
 279     }else ++lt_time;
 280   }
 281   ++g_time;
 282   pl1.hit=0;pl1.hito=-3;
 283   if(_2pl) {pl2.hit=0;pl2.hito=-3;}
 284   G_code();
 285
 286   IT_act();
 287   SW_act();
 288   if(_2pl) {
 289         if(pcnt) {PL_act(&pl1);PL_act(&pl2);}
 290         else {PL_act(&pl2);PL_act(&pl1);}
 291         pcnt^=1;
 292   }else PL_act(&pl1);
 293   MN_act();
 294   if(fld_need_remap) BM_remapfld();
 295   BM_clear(BM_PLR1|BM_PLR2|BM_MONSTER);
 296   BM_mark(&pl1.o,BM_PLR1);
 297   if(_2pl) BM_mark(&pl2.o,BM_PLR2);
 298   MN_mark();
 299   WP_act();
 300   DOT_act();
 301   SMK_act();
 302   FX_act();
 303   if(_2pl) {
 304         PL_damage(&pl1);PL_damage(&pl2);
 305         if(!(pl1.f&PLF_PNSND) && pl1.pain) PL_cry(&pl1);
 306         if(!(pl2.f&PLF_PNSND) && pl2.pain) PL_cry(&pl2);
 307         if((pl1.pain-=5) < 0) {pl1.pain=0;pl1.f&=(0xFFFF-PLF_PNSND);}
 308         if((pl2.pain-=5) < 0) {pl2.pain=0;pl2.f&=(0xFFFF-PLF_PNSND);}
 309   }else{
 310         PL_damage(&pl1);
 311         if(!(pl1.f&PLF_PNSND) && pl1.pain) PL_cry(&pl1);
 312         if((pl1.pain-=5) < 0) {pl1.pain=0;pl1.f&=(0xFFFF-PLF_PNSND);}
 313   }
 314   if(g_exit==1) {
 315
 316         if(G_end_video()) {
 317           MUS_free();
 318           g_st=GS_EVIDEO;
 319           return;
 320         }
 321
 322 inter:
 323         switch(g_map) {
 324           case 19: g_st=GS_ENDANIM;A8_start("FINAL");break;
 325           case 31: case 32: g_map=16;set_trans(GS_INTER);break;
 326           default: ++g_map;set_trans(GS_INTER);break;
 327         }
 328         MUS_free();
 329         if (g_st == GS_INTER) {
 330           MUS_load("INTERMUS");
 331   } else {
 332     MUS_load("\x8a\x8e\x8d\x85\x96\x0");
 333     MUS_volume(128);
 334   }
 335         MUS_start(0);
 336   }else if(g_exit==2) {
 337         switch(g_map) {
 338           case 31: g_map=32;set_trans(GS_INTER);break;
 339           case 32: g_map=16;set_trans(GS_INTER);break;
 340           default: g_map=31;set_trans(GS_INTER);break;
 341         }
 342         MUS_free();
 343         MUS_load("INTERMUS");
 344         MUS_start(0);
 345   }
 346
 347 #ifdef DEMO
 348   if(g_dm && g_time>10920) {set_trans(GS_INTER);}
 349 #endif
 350 }
 351
 352 void G_respawn_player (player_t *p) {
 353   int i;
 354
 355   if(dm_pnum==2) {
 356     if(p==&pl1) i=dm_pl1p^=1;
 357     else i=dm_pl2p^=1;
 358     p->o.x=dm_pos[i].x;p->o.y=dm_pos[i].y;p->d=dm_pos[i].d;
 359     FX_tfog(dm_pos[i].x,dm_pos[i].y);Z_sound(telepsnd,128);
 360     return;
 361   }
 362   do{i=myrand(dm_pnum);}while(i==dm_pl1p || i==dm_pl2p);
 363   p->o.x=dm_pos[i].x;p->o.y=dm_pos[i].y;p->d=dm_pos[i].d;
 364   if(p==&pl1) dm_pl1p=i; else dm_pl2p=i;
 365   FX_tfog(dm_pos[i].x,dm_pos[i].y);Z_sound(telepsnd,128);
 366 }