- fixed the bouncybrick artifact bug
[supertux.git] / src / tile.cpp
1 //  $Id$
2 // 
3 //  SuperTux
4 //  Copyright (C) 2004 Tobias Glaesser <tobi.web@gmx.de>
5 //
6 //  This program is free software; you can redistribute it and/or
7 //  modify it under the terms of the GNU General Public License
8 //  as published by the Free Software Foundation; either version 2
9 //  of the License, or (at your option) any later version.
10 //
11 //  This program is distributed in the hope that it will be useful,
12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 //  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
19 //  02111-1307, USA.
20
21 #include <cassert>
22 #include <iostream>
23
24 #include "tile.h"
25 #include "scene.h"
26 #include "screen/drawing_context.h"
27
28 TileManager* TileManager::instance_  = 0;
29 std::set<TileGroup>* TileManager::tilegroups_  = 0;
30
31 Tile::Tile()
32   : id(-1), attributes(0), data(0), next_tile(0), anim_speed(25)
33 {
34 }
35
36 Tile::~Tile()
37 {
38   for(std::vector<Surface*>::iterator i = images.begin(); i != images.end();
39       ++i) {
40     delete *i;
41   }
42   for(std::vector<Surface*>::iterator i = editor_images.begin();
43       i != editor_images.end(); ++i) {
44     delete *i;                                                                
45   }
46 }
47
48 int
49 Tile::read(LispReader& reader)
50 {
51   if(!reader.read_int("id", id)) {
52     std::cerr << "Missing tile-id.\n";
53     return -1;
54   }
55   
56   bool value;
57   if(reader.read_bool("solid", value) && value)
58     attributes |= SOLID;
59   if(reader.read_bool("unisolid", value) && value)
60     attributes |= GOAL;                            
61   if(reader.read_bool("brick", value) && value)
62     attributes |= BRICK;
63   if(reader.read_bool("ice", value) && value)
64     attributes |= ICE;
65   if(reader.read_bool("water", value) && value)
66     attributes |= WATER;
67   if(reader.read_bool("spike", value) && value)
68     attributes |= SPIKE;
69   if(reader.read_bool("fullbox", value) && value)
70     attributes |= FULLBOX;
71   if(reader.read_bool("distro", value) && value)
72     attributes |= COIN;
73   if(reader.read_bool("coin", value) && value)
74     attributes |= COIN;
75   if(reader.read_bool("goal", value) && value)
76     attributes |= GOAL;
77
78   reader.read_int("data", data);
79   reader.read_int("anim-speed", anim_speed);
80   reader.read_int("next-tile", next_tile);
81
82   std::vector<std::string> filenames;
83   reader.read_string_vector("images", filenames);
84   std::vector<std::string> editor_filenames;
85   reader.read_string_vector("editor-images", editor_filenames);
86
87   std::vector<int> grid;
88   reader.read_int_vector("grid", grid);
89
90   // read images
91   for(std::vector<std::string>::iterator i = filenames.begin();
92       i != filenames.end(); ++i) 
93     {
94       if (grid.size() == 4)
95         {
96           Surface* surface = new Surface(datadir + "/images/tilesets/" + *i,
97                                          grid[0], grid[1], grid[2], grid[3],
98                                          USE_ALPHA);
99           images.push_back(surface);
100         }
101       else
102         {
103           Surface* surface = new Surface(datadir + "/images/tilesets/" + *i, USE_ALPHA);
104           images.push_back(surface);
105         }
106     }
107
108   for(std::vector<std::string>::iterator i = editor_filenames.begin();
109       i != editor_filenames.end(); ++i) {
110     Surface* surface 
111       = new Surface(datadir + "/images/tilesets/" + *i, USE_ALPHA);
112     editor_images.push_back(surface);
113   }
114
115   return id;
116 }
117
118 //---------------------------------------------------------------------------
119
120 TileManager::TileManager()
121 {
122   std::string filename = datadir + "/images/tilesets/supertux.stgt";
123   load_tileset(filename);
124 }
125
126 TileManager::~TileManager()
127 {
128   for(std::vector<Tile*>::iterator i = tiles.begin(); i != tiles.end(); ++i) {
129     delete *i;                                                                  
130   }
131
132   delete tilegroups_;
133 }
134
135 void TileManager::load_tileset(std::string filename)
136 {
137   if(filename == current_tileset)
138     return;
139   
140   // free old tiles
141   for(std::vector<Tile*>::iterator i = tiles.begin(); i != tiles.end(); ++i) {
142     delete *i;
143   }
144   tiles.clear();
145  
146   lisp_object_t* root_obj = lisp_read_from_file(filename);
147
148   if (!root_obj)
149     st_abort("Couldn't load file", filename);
150
151   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-tiles") == 0)
152     {
153       lisp_object_t* cur = lisp_cdr(root_obj);
154       int tileset_id = 0;
155
156       while(!lisp_nil_p(cur))
157         {
158           lisp_object_t* element = lisp_car(cur);
159
160           if (strcmp(lisp_symbol(lisp_car(element)), "tile") == 0)
161             {
162               LispReader reader(lisp_cdr(element));
163
164               Tile* tile = new Tile;
165               int tile_id = tile->read(reader);
166               if(tile_id < 0) {
167                 std::cerr 
168                   << "Warning: parse error when reading a tile, skipping.\n";
169                 continue;
170               }
171
172               tile_id += tileset_id;
173
174               if(tile_id >= int(tiles.size()))
175                 tiles.resize(tile_id+1);
176               tiles[tile_id] = tile;
177             }
178           else if (strcmp(lisp_symbol(lisp_car(element)), "tileset") == 0)
179             {
180               LispReader reader(lisp_cdr(element));
181               std::string filename;
182               reader.read_string("file", filename);
183               filename = datadir + "/images/tilesets/" + filename;
184               load_tileset(filename);
185             }
186           else if (strcmp(lisp_symbol(lisp_car(element)), "tilegroup") == 0)
187             {
188               TileGroup new_;
189               LispReader reader(lisp_cdr(element));
190               reader.read_string("name", new_.name);
191               reader.read_int_vector("tiles", new_.tiles);            
192               if(!tilegroups_)
193                 tilegroups_ = new std::set<TileGroup>;
194               tilegroups_->insert(new_).first;
195             }
196           else if (strcmp(lisp_symbol(lisp_car(element)), "properties") == 0)
197             {
198               LispReader reader(lisp_cdr(element));
199               reader.read_int("id", tileset_id);
200               tileset_id *= 1000;
201             }
202           else
203             {
204               std::cerr << "Unknown symbol: " << 
205                 lisp_symbol(lisp_car(element)) << "\n";
206             }
207
208           cur = lisp_cdr(cur);
209         }
210     }
211   else
212     {
213       assert(0);
214     }
215
216   lisp_free(root_obj);
217   current_tileset = filename;
218 }
219
220 void
221 TileManager::draw_tile(DrawingContext& context, unsigned int c,
222     const Vector& pos, int layer)
223 {
224   if(c == 0)
225     return;
226
227   Tile& tile = get(c);
228
229   if(!tile.images.size())
230     return;
231
232   if(tile.images.size() > 1)
233   {
234     size_t frame 
235       = ((global_frame_counter*25) / tile.anim_speed) % tile.images.size();
236     context.draw_surface(tile.images[frame], pos, layer);
237   }
238   else if (tile.images.size() == 1)
239   {
240     context.draw_surface(tile.images[0], pos, layer);
241   }
242 }
243