src/Grid.h

   1 /*
   2  * Grid.h
   3  * Daniel Nelson - 8/24/0
   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
  26 #ifndef GRID_H
  27 #define GRID_H
  28
  29 #include <cassert>
  30
  31 using namespace std;
  32
  33 #include "BlockManager.h"
  34 #include "GarbageManager.h"
  35 #include "LevelLights.h"
  36
  37 // grid element states
  38 #define GR_EMPTY                 (1 << 0)
  39 #define GR_BLOCK                 (1 << 1)
  40 #define GR_GARBAGE               (1 << 2)
  41 #define GR_FALLING               (1 << 3)
  42 #define GR_IMMUTABLE             (1 << 4)
  43 #define GR_SHATTERING            (1 << 5)
  44 #define GR_HANGING               (1 << 6)
  45
  46 // pattern types
  47 #define PT_HORIZONTAL            (1 << 0)
  48 #define PT_VERTICAL              (1 << 1)
  49
  50 class Block;
  51 class Garbage;
  52 class ComboTabulator;
  53
  54 class CheckRegistryElement {
  55 public:
  56   bool mark;
  57   ComboTabulator *combo;
  58 };
  59
  60 class GridElement {
  61 public:
  62   int state;
  63   int resident_type;
  64   void *resident;
  65 };
  66
  67 /* static */ class Grid {
  68 public:
  69   static void gameStart (   );
  70   static void timeStep (   );
  71   static bool shiftGridUp (   );
  72
  73   static inline void dump (   )
  74   {
  75     cout << '\n';
  76     for (int y = GC_PLAY_HEIGHT; y--; ) {
  77       for (int x = 0; x < GC_PLAY_WIDTH; x++)
  78         switch (grid[x][y].state) {
  79         case GR_EMPTY: cout << ' '; break;
  80         case GR_BLOCK: cout << 'B'; break;
  81         case GR_GARBAGE: cout << '@'; break;
  82         case GR_FALLING: cout << '*'; break;
  83         case GR_IMMUTABLE: cout << '#'; break;
  84         case GR_SHATTERING: cout << 'X'; break;
  85         case GR_HANGING: cout << '+'; break;
  86         default: cout << '!'; break;
  87         }
  88       cout << '\n';
  89     }
  90     cout << endl;
  91
  92     for (int n = 0; n < GC_PLAY_WIDTH; n++)
  93       cout << blockAt(n, 0).state << endl;
  94   }
  95
  96   static inline int stateAt ( int x, int y )
  97   {
  98     return grid[x][y].state;
  99   }
 100
 101   static inline int residentTypeAt ( int x, int y )
 102   {
 103     return grid[x][y].resident_type;
 104   }
 105
 106   static inline Block &blockAt ( int x, int y )
 107   {
 108     assert(grid[x][y].resident_type == GR_BLOCK);
 109     return *((Block *) grid[x][y].resident);
 110   }
 111
 112   static inline Garbage &garbageAt ( int x, int y )
 113   {
 114 #ifndef NDEBUG
 115     if (!(grid[x][y].resident_type == GR_GARBAGE)) {
 116       dump();
 117       DUMP(x);
 118       DUMP(y);
 119       DUMP(grid[x][y].state);
 120       DUMP(grid[x][y].resident_type);
 121       DUMP(top_occupied_row);
 122       DUMP(top_effective_row);
 123     }
 124 #endif
 125     assert(grid[x][y].resident_type == GR_GARBAGE);
 126     assert(y < GC_PLAY_HEIGHT);
 127     return *((Garbage *) grid[x][y].resident);
 128   }
 129
 130   static inline int flavorAt ( int x, int y )
 131   {
 132     assert(grid[x][y].state == GR_BLOCK);
 133     return ((Block *) grid[x][y].resident)->flavor;
 134   }
 135
 136   static inline bool matchAt ( int x, int y, Block &block )
 137   {
 138     assert(grid[x][y].state == GR_BLOCK);
 139     return BlockManager::flavorMatch(block, *(Block *) grid[x][y].resident);
 140   }
 141
 142   static inline void changeState ( int x, int y, void *resident, int state )
 143   {
 144     assert(grid[x][y].resident == resident);
 145     grid[x][y].state = state;
 146   }
 147
 148   static inline void addBlock ( int x, int y, Block *resident, int state )
 149   {
 150     assert(x < GC_PLAY_WIDTH);
 151     assert(y < GC_PLAY_HEIGHT);
 152     assert(grid[x][y].state & GR_EMPTY);
 153     grid[x][y].resident = resident;
 154     grid[x][y].resident_type = GR_BLOCK;
 155     grid[x][y].state = state;
 156   }
 157
 158   static inline void addGarbage ( int x, int y, Garbage *resident, int state )
 159   {
 160     assert(grid[x][y].state & GR_EMPTY);
 161     assert(x < GC_PLAY_WIDTH);
 162     assert(y < GC_PLAY_HEIGHT);
 163     grid[x][y].resident = resident;
 164     grid[x][y].resident_type = GR_GARBAGE;
 165     grid[x][y].state = state;
 166   }
 167
 168   static inline void remove ( int x, int y, void *resident )
 169   {
 170     assert(grid[x][y].resident == resident);
 171     grid[x][y].resident = null;
 172     grid[x][y].resident_type = GR_EMPTY;
 173     grid[x][y].state = GR_EMPTY;
 174   }
 175
 176   static inline void requestEliminationCheck ( Block &block,
 177    ComboTabulator *combo = null )
 178   {
 179     check_registry[block.id].mark = true;
 180     check_registry[block.id].combo = combo;
 181     check_count++;
 182   }
 183
 184   static inline bool checkSafeHeightViolation (   )
 185   {
 186     return top_effective_row >= GC_SAFE_HEIGHT - 1;
 187   }
 188
 189   static inline void notifyImpact ( int y, int height )
 190   {
 191     int impact_top = y + height - 1;
 192
 193     if (top_effective_row < impact_top) {
 194       top_effective_row = impact_top;
 195       LevelLights::levelRaise(top_effective_row);
 196     }
 197
 198     LevelLights::notifyImpact(y, height);
 199   }
 200
 201   // top row with anything in it, including initially falling garbage; used to
 202   // determine garbage drop height; updated in Grid::timeStep() and
 203   // GarbageManager::newFallingGarbage()
 204   static int top_occupied_row;
 205
 206   // top row that's holding blocks or landed garbage; used for level lights and
 207   // safe height violation; updated in Grid::timeStep() and Grid::notifyImpact()
 208   static int top_effective_row;
 209
 210   static bool gray_shatter;
 211
 212 private:
 213   static void handleEliminationCheckRequest ( Block &block,
 214    ComboTabulator *combo );
 215
 216   static void shatterGarbage_inline_split_ ( int x, int y, Garbage *due_to );
 217   static inline void shatterGarbage ( int x, int y, Garbage *due_to = null )
 218   {
 219     if (!(stateAt(x, y) & GR_GARBAGE)) return;
 220     shatterGarbage_inline_split_(x, y, due_to);
 221   }
 222
 223   static GridElement grid[GC_PLAY_WIDTH][GC_PLAY_HEIGHT];
 224   static CheckRegistryElement check_registry[GC_BLOCK_STORE_SIZE];
 225   static int check_count;
 226
 227   static int shatter_count;
 228   static int shatter_top;
 229   static int shatter_bottom;
 230 };
 231
 232 #endif