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(svn r12125) -Codechange: Remove redundant signal lookup table, and document why normal electric signals are handled specially.

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This commit is contained in:
peter1138 2008-02-12 20:14:14 +00:00
parent c2bad6d22c
commit 63e306006b
2 changed files with 10 additions and 15 deletions
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23
src/rail_cmd.cpp
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@ -1433,27 +1433,20 @@ static void DrawSingleSignal(TileIndex tile, Track track, byte condition, uint i
}
};
static const SpriteID SignalBase[2][2][4] = {
{ /* Signals on left side */
{ 0x4FB, 0x1323, 0x1333, 0x1343}, /* light signals */
{ 0x1353, 0x1363, 0x1373, 0x1383} /* semaphores */
}, { /* Signals on right side */
{ 0x4FB, 0x1323, 0x1333, 0x1343}, /* light signals */
{ 0x1446, 0x1456, 0x1466, 0x1476} /* semaphores */
/* | | | | */
/* normal, entry, exit, combo */
}
};
uint x = TileX(tile) * TILE_SIZE + SignalPositions[side][pos].x;
uint y = TileY(tile) * TILE_SIZE + SignalPositions[side][pos].y;
SpriteID sprite;
if (GetSignalType(tile, track) == SIGTYPE_NORMAL && GetSignalVariant(tile, track) == SIG_ELECTRIC) {
sprite = SignalBase[side][GetSignalVariant(tile, track)][GetSignalType(tile, track)] + image + condition;
SignalType type = GetSignalType(tile, track);
SignalVariant variant = GetSignalVariant(tile, track);
if (type == SIGTYPE_NORMAL && variant == SIG_ELECTRIC) {
/* Normal electric signals are picked from original sprites. */
sprite = SPR_ORIGINAL_SIGNALS_BASE + image + condition;
} else {
sprite = SPR_SIGNALS_BASE + (GetSignalType(tile, track) - 1) * 16 + GetSignalVariant(tile, track) * 64 + image + condition;
/* All other signals are picked from add on sprites. */
sprite = SPR_SIGNALS_BASE + (type - 1) * 16 + variant * 64 + image + condition;
}
AddSortableSpriteToDraw(sprite, PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, GetSaveSlopeZ(x, y, track));

2
src/table/sprites.h
View File

@ -263,6 +263,8 @@ enum Sprites {
SPR_MONO_SNOW_OFFSET = 26,
SPR_MGLV_SNOW_OFFSET = 26,
SPR_ORIGINAL_SIGNALS_BASE = 1275,
SPR_RAIL_SINGLE_Y = 1005,
SPR_RAIL_SINGLE_X = 1006,
SPR_RAIL_SINGLE_NORTH = 1007,