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(svn r2753) -Codechange: Introduced a new struct "RailtypeInfo" to store rail type specific information. Begun populating it with a bunch of sprites, more to come later. This should result in cleaner, more compact code which allows easy introduction of new railtypes.

release/0.4.5
celestar 2005-07-29 21:36:02 +00:00
parent 3868b151a9
commit 1736566e22
4 changed files with 116 additions and 101 deletions
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1
Makefile
View File

@ -670,6 +670,7 @@ C_SOURCES += queue.c
C_SOURCES += rail.c
C_SOURCES += rail_cmd.c
C_SOURCES += rail_gui.c
C_SOURCES += railtypes.c
C_SOURCES += rev.c
C_SOURCES += road_cmd.c
C_SOURCES += road_gui.c

43
rail.h
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@ -139,6 +139,30 @@ typedef enum SignalStates {
SIGNAL_STATE_GREEN = 1,
} SignalState;
/** This struct contains all the info that is needed to draw and construct tracks.
*/
typedef struct RailtypeInfo {
struct {
SpriteID track_y; ///< single piece of rail in Y direction, with ground
SpriteID track_ns; ///< two pieces of rail in North and South corner (East-West direction)
SpriteID ground; ///< ground sprite for a 3-way switch
SpriteID single_y; ///< single piece of rail in Y direction, without ground
SpriteID single_x; ///< single piece of rail in X direction
SpriteID single_n; ///< single piece of rail in the northern corner
SpriteID single_s; ///< single piece of rail in the southern corner
SpriteID single_e; ///< single piece of rail in the eastern corner
SpriteID single_w; ///< single piece of rail in the western corner
} base_sprites;
/** sprite number difference between a piece of track on a snowy ground and the corresponding one on normal ground */
SpriteID snow_offset;
/** bitmask to the OTHER railtypes that can be used by an engine of THIS railtype */
byte compatible_railtypes;
} RailtypeInfo;
RailtypeInfo railtypes[RAILTYPE_END];
// these are the maximums used for updating signal blocks, and checking if a depot is in a pbs block
enum {
NUM_SSD_ENTRY = 256, // max amount of blocks
@ -499,6 +523,17 @@ static inline TransportType GetCrossingTransportType(TileIndex tile, Track track
return INVALID_TRANSPORT;
}
/**
* Returns a pointer to the Railtype information for a given railtype
* @param railtype the rail type which the information is requested for
* @return The pointer to the RailtypeInfo
*/
static inline RailtypeInfo *GetRailTypeInfo(RailType railtype)
{
assert(railtype < RAILTYPE_END);
return &railtypes[railtype];
}
/**
* Checks if an engine of the given RailType can drive on a tile with a given
* RailType. This would normally just be an equality check, but for electric
@ -509,13 +544,7 @@ static inline TransportType GetCrossingTransportType(TileIndex tile, Track track
*/
static inline bool IsCompatibleRail(RailType enginetype, RailType tiletype)
{
static const bool EquivRailTypes[RAILTYPE_END][RAILTYPE_END] = {
{ true, false, false },
{ false, true, false },
{ false, false, true },
};
return EquivRailTypes[enginetype][tiletype];
return HASBIT(GetRailTypeInfo(enginetype)->compatible_railtypes, tiletype);
}
#endif // RAIL_H

112
rail_cmd.c
View File

@ -1359,87 +1359,11 @@ static void DrawSpecialBuilding(uint32 image, uint32 tracktype_offs,
AddSortableSpriteToDraw(image, ti->x + x, ti->y + y, xsize, ysize, zsize, ti->z + z);
}
/* Arrangement of the sprites
* 1) Single track in Y direction
* 2) Northern and southern trackbits set
* 3) "Basis" for 3-way switch
* 4) Single rail in Y direction without ground sprite
* 5) as above, X direction
* 6) as above, nortern track
* 7) as above, southern track
* 8) as above, eastern track
* 9) as above, western track
* 10) the offset of the snow sprites
*/
static SpriteID RailSpriteIDs[] = {
SPR_RAIL_TRACK_Y,
SPR_RAIL_TRACK_N_S,
SPR_RAIL_TRACK_BASE,
SPR_RAIL_SINGLE_Y,
SPR_RAIL_SINGLE_X,
SPR_RAIL_SINGLE_NORTH,
SPR_RAIL_SINGLE_SOUTH,
SPR_RAIL_SINGLE_EAST,
SPR_RAIL_SINGLE_WEST,
SPR_RAIL_SNOW_OFFSET,
};
static SpriteID MonoSpriteIDs[] = {
SPR_MONO_TRACK_Y,
SPR_MONO_TRACK_N_S,
SPR_MONO_TRACK_BASE,
SPR_MONO_SINGLE_Y,
SPR_MONO_SINGLE_X,
SPR_MONO_SINGLE_NORTH,
SPR_MONO_SINGLE_SOUTH,
SPR_MONO_SINGLE_EAST,
SPR_MONO_SINGLE_WEST,
SPR_MONO_SNOW_OFFSET,
};
static SpriteID MaglevSpriteIDs[] = {
SPR_MGLV_TRACK_Y,
SPR_MGLV_TRACK_N_S,
SPR_MGLV_TRACK_BASE,
SPR_MGLV_SINGLE_Y,
SPR_MGLV_SINGLE_X,
SPR_MGLV_SINGLE_NORTH,
SPR_MGLV_SINGLE_SOUTH,
SPR_MGLV_SINGLE_EAST,
SPR_MGLV_SINGLE_WEST,
SPR_MGLV_SNOW_OFFSET,
};
/** Sprite reference enum */
enum {
TRACK_Y,
TRACK_N_S,
TRACK_BASE,
SINGLE_Y,
SINGLE_X,
SINGLE_NORTH,
SINGLE_SOUTH,
SINGLE_EAST,
SINGLE_WEST,
SNOW_OFFSET,
};
/** Contains the pointers to the arrays *SpriteIDs.
* There, all the Sprites are recorded that the
* Track Draw system requireds. Note: Pointer arrangement
* must match the tracktype number
*/
static SpriteID *TrackSpriteIDs[RAILTYPE_END] = {
RailSpriteIDs,
MonoSpriteIDs,
MaglevSpriteIDs
};
static void DrawTile_Track(TileInfo *ti)
{
uint32 tracktype_offs;
byte m5;
SpriteID *TrackSet = TrackSpriteIDs[GetRailType(ti->tile)];
const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
uint32 image; //XXX ok why the hell is SpriteID 16 bit when all the drawing routines need 32?
_drawtile_track_palette = SPRITE_PALETTE(PLAYER_SPRITE_COLOR(GetTileOwner(ti->tile)));
@ -1455,7 +1379,7 @@ static void DrawTile_Track(TileInfo *ti)
special = false;
// select the sprite to use based on the map5 byte.
(image = TrackSet[TRACK_Y], m5 == TRACK_BIT_DIAG2) ||
(image = rti->base_sprites.track_y, m5 == TRACK_BIT_DIAG2) ||
(image++, m5 == TRACK_BIT_DIAG1) ||
(image++, m5 == TRACK_BIT_UPPER) ||
(image++, m5 == TRACK_BIT_LOWER) ||
@ -1463,12 +1387,12 @@ static void DrawTile_Track(TileInfo *ti)
(image++, m5 == TRACK_BIT_LEFT) ||
(image++, m5 == (TRACK_BIT_DIAG1|TRACK_BIT_DIAG2)) ||
(image = TrackSet[TRACK_N_S], m5 == (TRACK_BIT_UPPER|TRACK_BIT_LOWER)) ||
(image = rti->base_sprites.track_ns, m5 == (TRACK_BIT_UPPER|TRACK_BIT_LOWER)) ||
(image++, m5 == (TRACK_BIT_LEFT|TRACK_BIT_RIGHT)) ||
(special=true, false) ||
(image = TrackSet[TRACK_BASE], !(m5 & (TRACK_BIT_RIGHT|TRACK_BIT_UPPER|TRACK_BIT_DIAG1))) ||
(image = rti->base_sprites.ground, !(m5 & (TRACK_BIT_RIGHT|TRACK_BIT_UPPER|TRACK_BIT_DIAG1))) ||
(image++, !(m5 & (TRACK_BIT_LEFT|TRACK_BIT_LOWER|TRACK_BIT_DIAG1))) ||
(image++, !(m5 & (TRACK_BIT_LEFT|TRACK_BIT_UPPER|TRACK_BIT_DIAG2))) ||
(image++, !(m5 & (TRACK_BIT_RIGHT|TRACK_BIT_LOWER|TRACK_BIT_DIAG2))) ||
@ -1479,34 +1403,34 @@ static void DrawTile_Track(TileInfo *ti)
if (f) DrawFoundation(ti, f);
// default sloped sprites..
if (ti->tileh != 0) image = _track_sloped_sprites[ti->tileh - 1] + TrackSet[TRACK_Y];
if (ti->tileh != 0) image = _track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.track_y;
}
if ((_m[ti->tile].m2 & RAIL_MAP2LO_GROUND_MASK)==RAIL_GROUND_BROWN) {
image = (image & SPRITE_MASK) | PALETTE_TO_BARE_LAND; // use a brown palette
} else if ((_m[ti->tile].m2 & RAIL_MAP2LO_GROUND_MASK)==RAIL_GROUND_ICE_DESERT) {
image += TrackSet[SNOW_OFFSET];
image += rti->snow_offset;
}
DrawGroundSprite(image);
if (special) {
if (m5 & TRACK_BIT_DIAG1) DrawGroundSprite(TrackSet[SINGLE_Y]);
if (m5 & TRACK_BIT_DIAG2) DrawGroundSprite(TrackSet[SINGLE_X]);
if (m5 & TRACK_BIT_UPPER) DrawGroundSprite(TrackSet[SINGLE_NORTH]);
if (m5 & TRACK_BIT_LOWER) DrawGroundSprite(TrackSet[SINGLE_SOUTH]);
if (m5 & TRACK_BIT_LEFT) DrawGroundSprite(TrackSet[SINGLE_WEST]);
if (m5 & TRACK_BIT_RIGHT) DrawGroundSprite(TrackSet[SINGLE_EAST]);
if (m5 & TRACK_BIT_DIAG1) DrawGroundSprite(rti->base_sprites.single_y);
if (m5 & TRACK_BIT_DIAG2) DrawGroundSprite(rti->base_sprites.single_x);
if (m5 & TRACK_BIT_UPPER) DrawGroundSprite(rti->base_sprites.single_n);
if (m5 & TRACK_BIT_LOWER) DrawGroundSprite(rti->base_sprites.single_s);
if (m5 & TRACK_BIT_LEFT) DrawGroundSprite(rti->base_sprites.single_w);
if (m5 & TRACK_BIT_RIGHT) DrawGroundSprite(rti->base_sprites.single_e);
}
if (_debug_pbs_level >= 1) {
byte pbs = PBSTileReserved(ti->tile);
if (pbs & TRACK_BIT_DIAG1) DrawGroundSprite(TrackSet[SINGLE_Y] | PALETTE_CRASH);
if (pbs & TRACK_BIT_DIAG2) DrawGroundSprite(TrackSet[SINGLE_X] | PALETTE_CRASH);
if (pbs & TRACK_BIT_UPPER) DrawGroundSprite(TrackSet[SINGLE_NORTH] | PALETTE_CRASH);
if (pbs & TRACK_BIT_LOWER) DrawGroundSprite(TrackSet[SINGLE_SOUTH] | PALETTE_CRASH);
if (pbs & TRACK_BIT_LEFT) DrawGroundSprite(TrackSet[SINGLE_WEST] | PALETTE_CRASH);
if (pbs & TRACK_BIT_RIGHT) DrawGroundSprite(TrackSet[SINGLE_EAST] | PALETTE_CRASH);
if (pbs & TRACK_BIT_DIAG1) DrawGroundSprite(rti->base_sprites.single_y | PALETTE_CRASH);
if (pbs & TRACK_BIT_DIAG2) DrawGroundSprite(rti->base_sprites.single_x | PALETTE_CRASH);
if (pbs & TRACK_BIT_UPPER) DrawGroundSprite(rti->base_sprites.single_n | PALETTE_CRASH);
if (pbs & TRACK_BIT_LOWER) DrawGroundSprite(rti->base_sprites.single_s | PALETTE_CRASH);
if (pbs & TRACK_BIT_LEFT) DrawGroundSprite(rti->base_sprites.single_w | PALETTE_CRASH);
if (pbs & TRACK_BIT_RIGHT) DrawGroundSprite(rti->base_sprites.single_e | PALETTE_CRASH);
}
if (_display_opt & DO_FULL_DETAIL) {

61
railtypes.c 100644
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@ -0,0 +1,61 @@
/* $Id: */
#include "stdafx.h"
#include "openttd.h"
#include "rail.h"
#include "table/sprites.h"
/** @file railtypes.c
* All the railtype-specific information is stored here.
*/
/** Global Railtype definition
*/
RailtypeInfo railtypes[RAILTYPE_END] = {
{
{
SPR_RAIL_TRACK_Y,
SPR_RAIL_TRACK_N_S,
SPR_RAIL_TRACK_BASE,
SPR_RAIL_SINGLE_Y,
SPR_RAIL_SINGLE_X,
SPR_RAIL_SINGLE_NORTH,
SPR_RAIL_SINGLE_SOUTH,
SPR_RAIL_SINGLE_EAST,
SPR_RAIL_SINGLE_WEST
},
SPR_RAIL_SNOW_OFFSET,
(1 << RAILTYPE_RAIL),
},
{
{
SPR_MONO_TRACK_Y,
SPR_MONO_TRACK_N_S,
SPR_MONO_TRACK_BASE,
SPR_MONO_SINGLE_Y,
SPR_MONO_SINGLE_X,
SPR_MONO_SINGLE_NORTH,
SPR_MONO_SINGLE_SOUTH,
SPR_MONO_SINGLE_EAST,
SPR_MONO_SINGLE_WEST
},
SPR_MONO_SNOW_OFFSET,
(1 << RAILTYPE_MONO),
},
{
{
SPR_MGLV_TRACK_Y,
SPR_MGLV_TRACK_N_S,
SPR_MGLV_TRACK_BASE,
SPR_MGLV_SINGLE_Y,
SPR_MGLV_SINGLE_X,
SPR_MGLV_SINGLE_NORTH,
SPR_MGLV_SINGLE_SOUTH,
SPR_MGLV_SINGLE_EAST,
SPR_MGLV_SINGLE_WEST
},
SPR_MGLV_SNOW_OFFSET,
(1 << RAILTYPE_MAGLEV),
},
};