tile.h

00001 /*
00002 Copyright Remco Bras and Michael de Lang 2007,2008.
00003 This file is part of RPGE.
00004 
00005 RPGE is free software; you can redistribute it and/or modify
00006 it under the terms of the GNU General Public License as published by
00007 the Free Software Foundation; either version 3 of the License, or
00008 (at your option) any later version.
00009 
00010 RPGE is distributed in the hope that it will be useful,
00011 but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 GNU General Public License for more details.
00014 
00015 You should have received a copy of the GNU General Public License
00016 along with this program.  If not, see <http://www.gnu.org/licenses/>
00017 */
00018 
00019 /*
00020  tile.h: Define the tile and tilelayer structures, declare tile usage procedures.
00021 */
00022 #ifndef TILE_H
00023 #define TILE_H
00024 
00025 #include <SDL/SDL.h>
00026 #include "xalloc.h"
00027 #include "mobs.h"
00028 #include "sequence.h"
00029 
00030 /*These are defined such that they match individual bits, which conveniently also work properly when added. The former property is great for C, the latter is good for GUILE. This does put an upper bound of approximately 32 on our number of allowed variations of blocking, but needing those should be rare.*/
00031 #define BLOCK_LEFT 0x4
00032 #define BLOCK_RIGHT 0x8
00033 #define BLOCK_UP 0x10
00034 #define BLOCK_DOWN 0x20
00035 #define BLOCK_ALL BLOCK_LEFT | BLOCK_RIGHT | BLOCK_UP | BLOCK_DOWN
00036 #define BLOCK_NONE 0x0
00037 
00038 typedef struct
00039 {
00040   int tilesheetindex; 
00041   SDL_Rect sheetclippinginfo;
00042   char blocking; 
00043   mob* occupant; /*This is a pointer to simplify matters*/
00044 } tile;
00045 
00046 typedef struct
00047 {
00048   int index;
00049   int count;
00050 }  imagecounter;
00051 
00052 typedef struct
00053 {
00054   tile** tilegrid;
00055   int height;
00056   int width;
00057   SDL_Surface* imagebuffer;
00058   sequence imagecounts;
00059 } tilelayer;
00060 
00061 extern sequence tile_layers;
00062 extern int maingrid_index;
00063 
00064 #define MAIN_GRID ((tilelayer*)tile_layers.data[maingrid_index].data)
00065 
00066 void init_tiles();
00067 tile make_tile(unsigned int tilesheet, SDL_Rect clipping, char blocking);
00068 tile** init_tilegrid(unsigned int width, unsigned int height);
00069 tile** set_all_tiles(int gridid,tile replacement);
00070 tile** set_tile(int gridid,unsigned int x, unsigned int y, tile replacement);
00071 char occupied(int tilex, int tiley,int grid);
00072 void set_occupant(int tilex, int tiley, int grid, mob* new_occupant);
00073 mob* get_occupant(int tilex, int tiley, int grid);
00074 void reset_occupant(int tilex, int tiley,int grid);
00075 int add_tilegrid(tilelayer grid);
00076 void remove_grid_at(int index);
00077 void set_maingrid_index(int ind);
00078 
00079 /*Includes which depend on this file*/
00080 #include "video.h"
00081 #endif