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annotate src/signs.h @ 7295:9a2cabefad4d draft

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(svn r10643) -Merge (from NoAI): properly counting the amount of signs instead of using the size of the sign pool.
author rubidium <rubidium@openttd.org>
date Fri, 20 Jul 2007 18:35:33 +0000
parents 2116c82efa49
children e2eb0f20e603
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* $Id$ */
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2
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3 /** @file signs.h */
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4
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5 #ifndef SIGNS_H
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6 #define SIGNS_H
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7
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8 #include "oldpool.h"
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9
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10 struct Sign {
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11 StringID str;
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12 ViewportSign sign;
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13 int32 x;
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14 int32 y;
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15 byte z;
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16 PlayerByte owner; // placed by this player. Anyone can delete them though. OWNER_NONE for gray signs from old games.
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17
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18 SignID index;
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19 };
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21 enum {
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22 INVALID_SIGN = 0xFFFF,
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23 };
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24
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25 extern SignID _new_sign_id;
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26
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27 DECLARE_OLD_POOL(Sign, Sign, 2, 16000)
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29 static inline SignID GetMaxSignIndex()
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30 {
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31 /* TODO - This isn't the real content of the function, but
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32 * with the new pool-system this will be replaced with one that
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33 * _really_ returns the highest index. Now it just returns
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34 * the next safe value we are sure about everything is below.
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35 */
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36 return GetSignPoolSize() - 1;
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37 }
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38
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39 static inline uint GetNumSigns()
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40 {
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41 extern uint _total_signs;
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42 return _total_signs;
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43 }
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44
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45 /**
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46 * Check if a Sign really exists.
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47 */
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48 static inline bool IsValidSign(const Sign *si)
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49 {
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50 return si->str != STR_NULL;
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51 }
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52
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53 static inline bool IsValidSignID(uint index)
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54 {
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55 return index < GetSignPoolSize() && IsValidSign(GetSign(index));
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56 }
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57
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58 void DestroySign(Sign *si);
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59
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60 static inline void DeleteSign(Sign *si)
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61 {
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62 DestroySign(si);
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63 si->str = STR_NULL;
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64 }
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66 #define FOR_ALL_SIGNS_FROM(ss, start) for (ss = GetSign(start); ss != NULL; ss = (ss->index + 1U < GetSignPoolSize()) ? GetSign(ss->index + 1U) : NULL) if (IsValidSign(ss))
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67 #define FOR_ALL_SIGNS(ss) FOR_ALL_SIGNS_FROM(ss, 0)
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68
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69 VARDEF bool _sign_sort_dirty;
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71 void UpdateAllSignVirtCoords();
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72 void PlaceProc_Sign(TileIndex tile);
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73
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74 /* signs_gui.cpp */
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75 void ShowRenameSignWindow(const Sign *si);
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77 void ShowSignList();
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78
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79 #endif /* SIGNS_H */