1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/* $Id$ */
/*
* This file is part of OpenTTD.
* 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.
* 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.
* 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/>.
*/
/** @file newgrf_commons.h This file simplyfies and embeds a common mechanism of
* loading/saving and mapping of grf entities.
*/
#ifndef NEWGRF_COMMONS_H
#define NEWGRF_COMMONS_H
#include "core/bitmath_func.hpp"
#include "tile_cmd.h"
#include "transparency.h"
#include "sprite.h"
#include "table/sprites.h"
/**
* Maps an entity id stored on the map to a GRF file.
* Entities are objects used ingame (houses, industries, industry tiles) for
* which we need to correlate the ids from the grf files with the ones in the
* the savegames themselves.
* An array of EntityIDMapping structs is saved with the savegame so
* that those GRFs can be loaded in a different order, or removed safely. The
* index in the array is the entity's ID stored on the map.
*
* The substitute ID is the ID of an original entity that should be used instead
* if the GRF containing the new entity is not available.
*/
struct EntityIDMapping {
uint32 grfid; ///< The GRF ID of the file the entity belongs to
uint8 entity_id; ///< The entity ID within the GRF file
uint8 substitute_id; ///< The (original) entity ID to use if this GRF is not available
};
class OverrideManagerBase {
protected:
uint16 *entity_overrides;
uint32 *grfid_overrides;
uint16 max_offset; ///< what is the length of the original entity's array of specs
uint16 max_new_entities; ///< what is the amount of entities, old and new summed
uint16 invalid_ID; ///< ID used to dected invalid entities;
virtual bool CheckValidNewID(uint16 testid) { return true; }
public:
EntityIDMapping *mapping_ID; ///< mapping of ids from grf files. Public out of convenience
OverrideManagerBase(uint16 offset, uint16 maximum, uint16 invalid);
virtual ~OverrideManagerBase();
void ResetOverride();
void ResetMapping();
void Add(uint8 local_id, uint32 grfid, uint entity_type);
virtual uint16 AddEntityID(byte grf_local_id, uint32 grfid, byte substitute_id);
uint16 GetSubstituteID(byte entity_id);
virtual uint16 GetID(uint8 grf_local_id, uint32 grfid);
inline uint16 GetMaxMapping() { return max_new_entities; }
inline uint16 GetMaxOffset() { return max_offset; }
};
struct HouseSpec;
class HouseOverrideManager : public OverrideManagerBase {
public:
HouseOverrideManager(uint16 offset, uint16 maximum, uint16 invalid) :
OverrideManagerBase(offset, maximum, invalid) {}
void SetEntitySpec(const HouseSpec *hs);
};
struct IndustrySpec;
class IndustryOverrideManager : public OverrideManagerBase {
public:
IndustryOverrideManager(uint16 offset, uint16 maximum, uint16 invalid) :
OverrideManagerBase(offset, maximum, invalid) {}
virtual uint16 AddEntityID(byte grf_local_id, uint32 grfid, byte substitute_id);
virtual uint16 GetID(uint8 grf_local_id, uint32 grfid);
void SetEntitySpec(IndustrySpec *inds);
};
struct IndustryTileSpec;
class IndustryTileOverrideManager : public OverrideManagerBase {
protected:
virtual bool CheckValidNewID(uint16 testid) { return testid != 0xFF; }
public:
IndustryTileOverrideManager(uint16 offset, uint16 maximum, uint16 invalid) :
OverrideManagerBase(offset, maximum, invalid) {}
void SetEntitySpec(const IndustryTileSpec *indts);
};
extern HouseOverrideManager _house_mngr;
extern IndustryOverrideManager _industry_mngr;
extern IndustryTileOverrideManager _industile_mngr;
uint32 GetTerrainType(TileIndex tile);
TileIndex GetNearbyTile(byte parameter, TileIndex tile);
uint32 GetNearbyTileInformation(TileIndex tile);
/**
* Applies PALETTE_MODIFIER_TRANSPARENT and PALETTE_MODIFIER_COLOUR to a palette entry of a sprite layout entry
* @Note for ground sprites use #GroundSpritePaletteTransform
* @Note Not useable for OTTD internal spritelayouts from table/xxx_land.h as PALETTE_MODIFIER_TRANSPARENT is only set
* when to use the default palette.
*
* @param image The sprite to draw
* @param pal The palette from the sprite layout
* @param default_pal The default recolour sprite to use (typically company colour resp. random industry/house colour)
* @return The palette to use
*/
static inline SpriteID SpriteLayoutPaletteTransform(SpriteID image, SpriteID pal, SpriteID default_pal)
{
if (HasBit(image, PALETTE_MODIFIER_TRANSPARENT) || HasBit(image, PALETTE_MODIFIER_COLOUR)) {
return (pal != 0 ? pal : default_pal);
} else {
return PAL_NONE;
}
}
/**
* Applies PALETTE_MODIFIER_COLOUR to a palette entry of a ground sprite
* @Note Not useable for OTTD internal spritelayouts from table/xxx_land.h as PALETTE_MODIFIER_TRANSPARENT is only set
* when to use the default palette.
*
* @param image The sprite to draw
* @param pal The palette from the sprite layout
* @param default_pal The default recolour sprite to use (typically company colour resp. random industry/house colour)
* @return The palette to use
*/
static inline SpriteID GroundSpritePaletteTransform(SpriteID image, SpriteID pal, SpriteID default_pal)
{
if (HasBit(image, PALETTE_MODIFIER_COLOUR)) {
return (pal != 0 ? pal : default_pal);
} else {
return PAL_NONE;
}
}
void DrawTileSeq(const TileInfo *ti, const DrawTileSprites *dts, TransparencyOption to, byte stage, SpriteID default_palette);
#endif /* NEWGRF_COMMONS_H */
|
