src/GarbageManager.cxx

   1 /*
   2  * GarbageManager.cxx
   3  * Daniel Nelson - 8/25/0
   4  *
   5  * Copyright (C) 2000  Daniel Nelson
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20  *
  21  * Daniel Nelson - aluminumangel.org
  22  * 174 W. 18th Ave.
  23  * Columbus, OH  43210
  24  *
  25  * Allocates and frees blocks.
  26  */
  27
  28 #include "GarbageManager.h"
  29
  30 #include "Game.h"
  31 #include "Grid.h"
  32 #include "Random.h"
  33
  34 int GarbageManager::garbage_count;
  35 Garbage GarbageManager::garbageStore[GC_GARBAGE_STORE_SIZE];
  36 bool GarbageManager::storeMap[GC_GARBAGE_STORE_SIZE];
  37
  38 void GarbageManager::gameStart (   )
  39 {
  40   garbage_count = 0;
  41   for (int n = GC_GARBAGE_STORE_SIZE; n--; ) {
  42     storeMap[n] = false;
  43     garbageStore[n].id = n;
  44   }
  45 }
  46
  47 bool GarbageManager::newFallingGarbage ( int height, int width, int flavor )
  48 /*
  49  * The Grid variable top_occupied_row must be accurate at the time of call.
  50  */
  51 {
  52   int drop_row;
  53
  54   if (height > GC_MAX_GARBAGE_HEIGHT) height = GC_MAX_GARBAGE_HEIGHT;
  55
  56   if (Grid::top_occupied_row >= GC_SAFE_HEIGHT)
  57     drop_row = Grid::top_occupied_row + 1;
  58   else
  59     drop_row = GC_SAFE_HEIGHT + 1;
  60
  61   // no room in the inn; try again later; don't allow it to occupy the top
  62   // row, to leave room for the final creep
  63   if (drop_row + height > GC_PLAY_HEIGHT - 1)
  64     return false;
  65
  66   Grid::top_occupied_row = drop_row + height - 1;
  67
  68   if (width == GC_PLAY_WIDTH)
  69     newFallingGarbage(0, drop_row, height, width, flavor);
  70   else
  71     newFallingGarbage(Random::number((GC_PLAY_WIDTH + 1) - width), drop_row,
  72      height, width, flavor);
  73
  74   return true;
  75 }