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clear_map.h
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1 /* $Id: clear_map.h 27037 2014-10-23 17:13:44Z rubidium $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
6 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
8 */
9
12 #ifndef CLEAR_MAP_H
13 #define CLEAR_MAP_H
14
15 #include "bridge_map.h"
16 #include "industry_type.h"
17
21 enum ClearGround {
22 CLEAR_GRASS = 0,
23 CLEAR_ROUGH = 1,
24 CLEAR_ROCKS = 2,
25 CLEAR_FIELDS = 3,
26 CLEAR_SNOW = 4,
27 CLEAR_DESERT = 5,
28 };
29
30
37 static inline bool IsSnowTile(TileIndex t)
38 {
39 assert(IsTileType(t, MP_CLEAR));
40 return HasBit(_m[t].m3, 4);
41 }
42
49 static inline ClearGround GetRawClearGround(TileIndex t)
50 {
51 assert(IsTileType(t, MP_CLEAR));
52 return (ClearGround)GB(_m[t].m5, 2, 3);
53 }
54
61 static inline ClearGround GetClearGround(TileIndex t)
62 {
63 if (IsSnowTile(t)) return CLEAR_SNOW;
64 return GetRawClearGround(t);
65 }
66
73 static inline bool IsClearGround(TileIndex t, ClearGround ct)
74 {
75 return GetClearGround(t) == ct;
76 }
77
78
85 static inline uint GetClearDensity(TileIndex t)
86 {
87 assert(IsTileType(t, MP_CLEAR));
88 return GB(_m[t].m5, 0, 2);
89 }
90
97 static inline void AddClearDensity(TileIndex t, int d)
98 {
99 assert(IsTileType(t, MP_CLEAR)); // XXX incomplete
100 _m[t].m5 += d;
101 }
102
109 static inline void SetClearDensity(TileIndex t, uint d)
110 {
111 assert(IsTileType(t, MP_CLEAR));
112 SB(_m[t].m5, 0, 2, d);
113 }
114
115
122 static inline uint GetClearCounter(TileIndex t)
123 {
124 assert(IsTileType(t, MP_CLEAR));
125 return GB(_m[t].m5, 5, 3);
126 }
127
134 static inline void AddClearCounter(TileIndex t, int c)
135 {
136 assert(IsTileType(t, MP_CLEAR)); // XXX incomplete
137 _m[t].m5 += c << 5;
138 }
139
146 static inline void SetClearCounter(TileIndex t, uint c)
147 {
148 assert(IsTileType(t, MP_CLEAR)); // XXX incomplete
149 SB(_m[t].m5, 5, 3, c);
150 }
151
152
160 static inline void SetClearGroundDensity(TileIndex t, ClearGround type, uint density)
161 {
162 assert(IsTileType(t, MP_CLEAR)); // XXX incomplete
163 _m[t].m5 = 0 << 5 | type << 2 | density;
164 }
165
166
173 static inline uint GetFieldType(TileIndex t)
174 {
175 assert(GetClearGround(t) == CLEAR_FIELDS);
176 return GB(_m[t].m3, 0, 4);
177 }
178
185 static inline void SetFieldType(TileIndex t, uint f)
186 {
187 assert(GetClearGround(t) == CLEAR_FIELDS); // XXX incomplete
188 SB(_m[t].m3, 0, 4, f);
189 }
190
197 static inline IndustryID GetIndustryIndexOfField(TileIndex t)
198 {
199 assert(GetClearGround(t) == CLEAR_FIELDS);
200 return(IndustryID) _m[t].m2;
201 }
202
209 static inline void SetIndustryIndexOfField(TileIndex t, IndustryID i)
210 {
211 assert(GetClearGround(t) == CLEAR_FIELDS);
212 _m[t].m2 = i;
213 }
214
215
223 static inline uint GetFence(TileIndex t, DiagDirection side)
224 {
225 assert(IsClearGround(t, CLEAR_FIELDS));
226 switch (side) {
227 default: NOT_REACHED();
228 case DIAGDIR_SE: return GB(_m[t].m4, 2, 3);
229 case DIAGDIR_SW: return GB(_m[t].m4, 5, 3);
230 case DIAGDIR_NE: return GB(_m[t].m3, 5, 3);
231 case DIAGDIR_NW: return GB(_me[t].m6, 2, 3);
232 }
233 }
234
242 static inline void SetFence(TileIndex t, DiagDirection side, uint h)
243 {
244 assert(IsClearGround(t, CLEAR_FIELDS));
245 switch (side) {
246 default: NOT_REACHED();
247 case DIAGDIR_SE: SB(_m[t].m4, 2, 3, h); break;
248 case DIAGDIR_SW: SB(_m[t].m4, 5, 3, h); break;
249 case DIAGDIR_NE: SB(_m[t].m3, 5, 3, h); break;
250 case DIAGDIR_NW: SB(_me[t].m6, 2, 3, h); break;
251 }
252 }
253
254
261 static inline void MakeClear(TileIndex t, ClearGround g, uint density)
262 {
263 SetTileType(t, MP_CLEAR);
264 _m[t].m1 = 0;
265 SetTileOwner(t, OWNER_NONE);
266 _m[t].m2 = 0;
267 _m[t].m3 = 0;
268 _m[t].m4 = 0 << 5 | 0 << 2;
269 SetClearGroundDensity(t, g, density); // Sets m5
270 _me[t].m6 = 0;
271 _me[t].m7 = 0;
272 }
273
274
281 static inline void MakeField(TileIndex t, uint field_type, IndustryID industry)
282 {
283 SetTileType(t, MP_CLEAR);
284 _m[t].m1 = 0;
285 SetTileOwner(t, OWNER_NONE);
286 _m[t].m2 = industry;
287 _m[t].m3 = field_type;
288 _m[t].m4 = 0 << 5 | 0 << 2;
289 SetClearGroundDensity(t, CLEAR_FIELDS, 3);
290 SB(_me[t].m6, 2, 4, 0);
291 _me[t].m7 = 0;
292 }
293
300 static inline void MakeSnow(TileIndex t, uint density = 0)
301 {
302 assert(GetClearGround(t) != CLEAR_SNOW);
303 SetBit(_m[t].m3, 4);
304 if (GetRawClearGround(t) == CLEAR_FIELDS) {
305 SetClearGroundDensity(t, CLEAR_GRASS, density);
306 } else {
307 SetClearDensity(t, density);
308 }
309 }
310
316 static inline void ClearSnow(TileIndex t)
317 {
318 assert(GetClearGround(t) == CLEAR_SNOW);
319 ClrBit(_m[t].m3, 4);
320 SetClearDensity(t, 3);
321 }
322
323 #endif /* CLEAR_MAP_H */