src/intro.cpp

   1 /*
   2 Copyright © 2004 Parallel Realities
   3 Copyright © 2007-2008 Kővágó Zoltán <DirtY.iCE.hu@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU General Public License
   7 as published by the Free Software Foundation; either version 2
   8 of the License, or (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13
  14 See the GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 */
  21
  22 #include "CAudio.h"
  23 #include "CGame.h"
  24 #include "CEntity.h"
  25 #include "CGraphics.h"
  26 #include "CMap.h"
  27 #include "CSpawnPoint.h"
  28 #include "gettext.hpp"
  29 #include "intro.h"
  30
  31 void playIntro(int tx, int ty, int delay)
  32 {
  33         unsigned int frameLimit = SDL_GetTicks() + 16;
  34         unsigned int time = 0;
  35
  36         graphics.setFontSize(1);
  37         graphics.setFontColor(0xff, 0xff, 0xff, 0x00, 0x00, 0x00);
  38
  39         char *line[3];
  40         SDL_Surface *text[3];
  41
  42         for (int i = 0 ; i < 3 ; i++)
  43         {
  44                 line[i] = strtok(NULL, "\n");
  45
  46                 if (!line[i])
  47                 {
  48                         graphics.showErrorAndExit(_("Malformed Intro Data"), "");
  49                 }
  50
  51                 text[i] = NULL;
  52
  53                 if (strcmp(line[i], "@none@"))
  54                 {
  55                         text[i] = graphics.getString(_(line[i]), true);
  56                 }
  57         }
  58
  59         player.tx += tx;
  60         player.ty += ty;
  61
  62         while (true)
  63         {
  64                 engine.setPlayerPosition((int)player.x, (int)player.y, map.limitLeft, map.limitRight, map.limitUp, map.limitDown);
  65
  66                 doGameStuff();
  67                 doSpawnPoints();
  68                 drawMapTopLayer();
  69
  70                 for (int i = 0 ; i < 3 ; i++)
  71                         if (text[i] != NULL)
  72                                 graphics.blit(text[i], bx + 320, 150 + (i * 30), graphics.screen, true);
  73
  74                 if (engine.userAccepts())
  75                         break;
  76
  77                 if (player.x < player.tx) player.x++;
  78                 if (player.x > player.tx) player.x--;
  79
  80                 if ((int)player.x == player.tx)
  81                 {
  82                         if (time == 0)
  83                         {
  84                                 time = SDL_GetTicks() + (delay * 1000);
  85                         }
  86                 }
  87
  88                 if (time > 0)
  89                         if (SDL_GetTicks() > time)
  90                                 break;
  91
  92                 engine.delay(frameLimit);
  93                 frameLimit = SDL_GetTicks() + 16;
  94         }
  95
  96         for (int i = 0 ; i < 3 ; i++)
  97                 if (text[i])
  98                         SDL_FreeSurface(text[i]);
  99 }
 100
 101 void showIntroError()
 102 {
 103         SDL_FillRect(graphics.screen, NULL, graphics.black);
 104
 105         engine.flushInput();
 106
 107         graphics.setFontSize(1);
 108
 109         graphics.drawString(_("Couldn't play intro - Data file is missing."), 320, 150, true, graphics.screen);
 110         graphics.drawString(_("This is not a fatal error, but could mean that the intro"), 320, 180, true, graphics.screen);
 111         graphics.drawString(_("file has not been found or was not in the expected format."), 320, 210, true, graphics.screen);
 112         graphics.drawString(_("However it may also be a sign that the game may not work correctly."), 320, 240, true, graphics.screen);
 113         graphics.drawString(_("Press Escape to Continue"), 320, 350, true, graphics.screen);
 114
 115         while (true)
 116         {
 117                 graphics.updateScreen();
 118                 engine.getInput();
 119                 if (engine.keyState[SDLK_ESCAPE])
 120                         break;
 121                 SDL_Delay(16);
 122         }
 123 }
 124
 125 void parseIntroCommand()
 126 {
 127         char *line;
 128         char command[25], param[25];
 129
 130         line = strtok(NULL, "\n");
 131         sscanf(line, "%s %s", command, param);
 132
 133         if (strcmp(command, "SPAWN") == 0)
 134         {
 135                 SpawnPoint *sp = (SpawnPoint*)map.spawnList.getHead();
 136
 137                 while (sp->next != NULL)
 138                 {
 139                         sp = (SpawnPoint*)sp->next;
 140
 141                         if (strcmp(param, sp->name) == 0)
 142                         {
 143                                 sp->active = true;
 144                         }
 145                 }
 146         }
 147 }
 148
 149 int doIntro()
 150 {
 151         int x, y, delay;
 152
 153         game.setMapName("data/introMap");
 154
 155         loadResources();
 156
 157         for (int i = 0 ; i < 4 ; i++)
 158         {
 159                 addItem(101, "CherryPlant", rand() % 640, 9050, "CherryPlant", 100, 1, 0, false);
 160         }
 161
 162         if (!engine.loadData("data/introText"))
 163         {
 164                 showIntroError();
 165                 return SECTION_TITLE;
 166         }
 167
 168         player.health = -100;
 169
 170         audio.playMusic();
 171
 172         char *line = strtok((char*)engine.dataBuffer, "\n");
 173
 174         while (true)
 175         {
 176                 line = strtok(NULL, "\n");
 177                 sscanf(line, "%d %d %d", &x, &y, &delay);
 178
 179                 if (delay == -1)
 180                         break;
 181
 182                 parseIntroCommand();
 183
 184                 playIntro(x, y, delay);
 185
 186                 if (engine.userAccepts())
 187                         break;
 188         }
 189
 190         if (!engine.userAccepts())
 191         {
 192                 audio.fadeMusic();
 193                 graphics.fadeToBlack();
 194         }
 195
 196         map.clear();
 197
 198         return SECTION_TITLE;
 199 }