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Location: cpp/openttd-patchpack/source/src/newgrf_railtype.cpp
r14895:fb237f7e7f5b
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(svn r19502) -Codechange: During NewGRF loading, store rail type labels in temporary data and process after loading has finished. This avoids deactivated rail vehicles being reactivated if the climate property is set after the rail type property.
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/** @file newgrf_railtype.cpp NewGRF handling of rail types. */
#include "stdafx.h"
#include "openttd.h"
#include "variables.h"
#include "debug.h"
#include "strings_type.h"
#include "rail.h"
#include "road_map.h"
#include "newgrf.h"
#include "newgrf_callbacks.h"
#include "newgrf_commons.h"
#include "newgrf_railtype.h"
#include "newgrf_spritegroup.h"
#include "core/bitmath_func.hpp"
static uint32 RailTypeGetRandomBits(const ResolverObject *object)
{
TileIndex tile = object->u.routes.tile;
uint tmp = CountBits(tile + (TileX(tile) + TileY(tile)) * TILE_SIZE);
return GB(tmp, 0, 2);
}
static uint32 RailTypeGetTriggers(const ResolverObject *object)
{
return 0;
}
static void RailTypeSetTriggers(const ResolverObject *object, int triggers)
{
}
static uint32 RailTypeGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
{
TileIndex tile = object->u.routes.tile;
if (tile == INVALID_TILE) {
switch (variable) {
case 0x40: return 0;
case 0x41: return 0;
case 0x42: return 0;
}
}
switch (variable) {
case 0x40: return GetTerrainType(tile);
case 0x41: return 0;
case 0x42: return IsLevelCrossingTile(tile) && IsCrossingBarred(tile);
}
DEBUG(grf, 1, "Unhandled rail type tile property 0x%X", variable);
*available = false;
return UINT_MAX;
}
static const SpriteGroup *RailTypeResolveReal(const ResolverObject *object, const RealSpriteGroup *group)
{
if (group->num_loading > 0) return group->loading[0];
if (group->num_loaded > 0) return group->loaded[0];
return NULL;
}
static inline void NewRailTypeResolver(ResolverObject *res, TileIndex tile)
{
res->GetRandomBits = &RailTypeGetRandomBits;
res->GetTriggers = &RailTypeGetTriggers;
res->SetTriggers = &RailTypeSetTriggers;
res->GetVariable = &RailTypeGetVariable;
res->ResolveReal = &RailTypeResolveReal;
res->u.routes.tile = tile;
res->callback = CBID_NO_CALLBACK;
res->callback_param1 = 0;
res->callback_param2 = 0;
res->last_value = 0;
res->trigger = 0;
res->reseed = 0;
res->count = 0;
}
SpriteID GetCustomRailSprite(const RailtypeInfo *rti, TileIndex tile, RailTypeSpriteGroup rtsg)
{
assert(rtsg < RTSG_END);
if (rti->group[rtsg] == NULL) return 0;
const SpriteGroup *group;
ResolverObject object;
NewRailTypeResolver(&object, tile);
group = SpriteGroup::Resolve(rti->group[rtsg], &object);
if (group == NULL || group->GetNumResults() == 0) return 0;
return group->GetResult();
}
uint8 GetReverseRailTypeTranslation(RailType railtype, const GRFFile *grffile)
{
/* No rail type table present, return rail type as-is */
if (grffile->railtype_max == 0) return railtype;
/* Look for a matching rail type label in the table */
RailTypeLabel label = GetRailTypeInfo(railtype)->label;
for (uint i = 0; i < grffile->railtype_max; i++) {
if (label == grffile->railtype_list[i]) return i;
}
/* If not found, return as invalid */
return 0xFF;
}
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