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(svn r24687) -Codechange: Add resolver classes for airports.

This commit is contained in:
alberth 2012-11-10 20:42:50 +00:00
parent 37605108e1
commit c83db1395b
2 changed files with 62 additions and 81 deletions
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137
src/newgrf_airport.cpp
View File

@ -17,6 +17,37 @@
#include "station_base.h"
#include "newgrf_class_func.h"
struct AirportScopeResolver : public ScopeResolver {
struct Station *st; ///< Station of the airport for which the callback is run, or \c NULL for build gui.
byte airport_id; ///< Type of airport for which the callback is run.
byte layout; ///< Layout of the airport to build.
TileIndex tile; ///< Tile for the callback, only valid for airporttile callbacks.
AirportScopeResolver(ResolverObject *ro, TileIndex tile, Station *st, byte airport_id, byte layout);
/* virtual */ uint32 GetRandomBits() const;
/* virtual */ uint32 GetVariable(byte variable, uint32 parameter, bool *available) const;
/* virtual */ void StorePSA(uint pos, int32 value);
};
/** Resolver object for airports. */
struct AirportResolverObject : public ResolverObject {
AirportScopeResolver airport_scope;
AirportResolverObject(TileIndex tile, Station *st, byte airport_id, byte layout,
CallbackID callback = CBID_NO_CALLBACK, uint32 callback_param1 = 0, uint32 callback_param2 = 0);
/* virtual */ ScopeResolver *GetScope(VarSpriteGroupScope scope = VSG_SCOPE_SELF, byte relative = 0)
{
switch (scope) {
case VSG_SCOPE_SELF: return &this->airport_scope;
default: return &this->default_scope; // XXX return ResolverObject::GetScope(scope, relative);
}
}
/* virtual */ const SpriteGroup *ResolveReal(const RealSpriteGroup *group) const;
};
/**
* Reset airport classes to their default state.
* This includes initialising the defaults classes with an empty
@ -132,38 +163,29 @@ void AirportOverrideManager::SetEntitySpec(AirportSpec *as)
}
}
uint32 AirportGetVariable(const ResolverObject *object, byte variable, uint32 parameter, bool *available)
/* virtual */ uint32 AirportScopeResolver::GetVariable(byte variable, uint32 parameter, bool *available) const
{
const Station *st = object->u.airport.st;
byte layout = object->u.airport.layout;
if (object->scope == VSG_SCOPE_PARENT) {
DEBUG(grf, 1, "Parent scope for airports unavailable");
*available = false;
return UINT_MAX;
}
switch (variable) {
case 0x40: return layout;
case 0x40: return this->layout;
}
if (st == NULL) {
if (this->st == NULL) {
*available = false;
return UINT_MAX;
}
switch (variable) {
/* Get a variable from the persistent storage */
case 0x7C: return (st->airport.psa != NULL) ? st->airport.psa->GetValue(parameter) : 0;
case 0x7C: return (this->st->airport.psa != NULL) ? this->st->airport.psa->GetValue(parameter) : 0;
case 0xF0: return st->facilities;
case 0xFA: return Clamp(st->build_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535);
case 0xF0: return this->st->facilities;
case 0xFA: return Clamp(this->st->build_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535);
}
return st->GetNewGRFVariable(object, variable, parameter, available);
return this->st->GetNewGRFVariable(this->ro, variable, parameter, available);
}
static const SpriteGroup *AirportResolveReal(const ResolverObject *object, const RealSpriteGroup *group)
/* virtual */ const SpriteGroup *AirportResolverObject::ResolveReal(const RealSpriteGroup *group) const
{
/* Airport action 2s should always have only 1 "loaded" state, but some
* times things don't follow the spec... */
@ -173,19 +195,9 @@ static const SpriteGroup *AirportResolveReal(const ResolverObject *object, const
return NULL;
}
static uint32 AirportGetRandomBits(const ResolverObject *object)
{
const Station *st = object->u.airport.st;
return st == NULL ? 0 : st->random_bits;
}
static uint32 AirportGetTriggers(const ResolverObject *object)
{
return 0;
}
static void AirportSetTriggers(const ResolverObject *object, int triggers)
/* virtual */ uint32 AirportScopeResolver::GetRandomBits() const
{
return this->st == NULL ? 0 : this->st->random_bits;
}
/**
@ -194,54 +206,40 @@ static void AirportSetTriggers(const ResolverObject *object, int triggers)
* @param pos Position in the persistent storage to use.
* @param value Value to store.
*/
void AirportStorePSA(ResolverObject *object, uint pos, int32 value)
/* virtual */ void AirportScopeResolver::StorePSA(uint pos, int32 value)
{
Station *st = object->u.airport.st;
if (object->scope != VSG_SCOPE_SELF || st == NULL) return;
if (this->st == NULL) return;
if (st->airport.psa == NULL) {
if (this->st->airport.psa == NULL) {
/* There is no need to create a storage if the value is zero. */
if (value == 0) return;
/* Create storage on first modification. */
uint32 grfid = (object->grffile != NULL) ? object->grffile->grfid : 0;
uint32 grfid = (this->ro->grffile != NULL) ? this->ro->grffile->grfid : 0;
assert(PersistentStorage::CanAllocateItem());
st->airport.psa = new PersistentStorage(grfid);
this->st->airport.psa = new PersistentStorage(grfid);
}
st->airport.psa->StoreValue(pos, value);
this->st->airport.psa->StoreValue(pos, value);
}
static void NewAirportResolver(ResolverObject *res, TileIndex tile, Station *st, byte airport_id, byte layout)
AirportResolverObject::AirportResolverObject(TileIndex tile, Station *st, byte airport_id, byte layout,
CallbackID callback, uint32 param1, uint32 param2)
: ResolverObject(AirportSpec::Get(airport_id)->grf_prop.grffile, callback, param1, param2), airport_scope(this, tile, st, airport_id, layout)
{
res->GetRandomBits = AirportGetRandomBits;
res->GetTriggers = AirportGetTriggers;
res->SetTriggers = AirportSetTriggers;
res->GetVariable = AirportGetVariable;
res->ResolveRealMethod = AirportResolveReal;
res->StorePSA = AirportStorePSA;
}
res->u.airport.st = st;
res->u.airport.airport_id = airport_id;
res->u.airport.layout = layout;
res->u.airport.tile = tile;
res->callback = CBID_NO_CALLBACK;
res->callback_param1 = 0;
res->callback_param2 = 0;
res->ResetState();
const AirportSpec *as = AirportSpec::Get(airport_id);
res->grffile = as->grf_prop.grffile;
AirportScopeResolver::AirportScopeResolver(ResolverObject *ro, TileIndex tile, Station *st, byte airport_id, byte layout) : ScopeResolver(ro)
{
this->st = st;
this->airport_id = airport_id;
this->layout = layout;
this->tile = tile;
}
SpriteID GetCustomAirportSprite(const AirportSpec *as, byte layout)
{
const SpriteGroup *group;
ResolverObject object;
NewAirportResolver(&object, INVALID_TILE, NULL, as->GetIndex(), layout);
group = SpriteGroup::Resolve(as->grf_prop.spritegroup[0], &object);
AirportResolverObject object(INVALID_TILE, NULL, as->GetIndex(), layout);
const SpriteGroup *group = SpriteGroup::Resolve(as->grf_prop.spritegroup[0], &object);
if (group == NULL) return as->preview_sprite;
return group->GetResult();
@ -249,13 +247,7 @@ SpriteID GetCustomAirportSprite(const AirportSpec *as, byte layout)
uint16 GetAirportCallback(CallbackID callback, uint32 param1, uint32 param2, Station *st, TileIndex tile)
{
ResolverObject object;
NewAirportResolver(&object, tile, st, st->airport.type, st->airport.layout);
object.callback = callback;
object.callback_param1 = param1;
object.callback_param2 = param2;
AirportResolverObject object(tile, st, st->airport.type, st->airport.layout, callback, param1, param2);
const SpriteGroup *group = SpriteGroup::Resolve(st->airport.GetSpec()->grf_prop.spritegroup[0], &object);
if (group == NULL) return CALLBACK_FAILED;
@ -271,13 +263,8 @@ uint16 GetAirportCallback(CallbackID callback, uint32 param1, uint32 param2, Sta
*/
StringID GetAirportTextCallback(const AirportSpec *as, byte layout, uint16 callback)
{
const SpriteGroup *group;
ResolverObject object;
NewAirportResolver(&object, INVALID_TILE, NULL, as->GetIndex(), layout);
object.callback = (CallbackID)callback;
group = SpriteGroup::Resolve(as->grf_prop.spritegroup[0], &object);
AirportResolverObject object(INVALID_TILE, NULL, as->GetIndex(), layout, (CallbackID)callback);
const SpriteGroup *group = SpriteGroup::Resolve(as->grf_prop.spritegroup[0], &object);
uint16 cb_res = (group != NULL) ? group->GetCallbackResult() : CALLBACK_FAILED;
if (cb_res == CALLBACK_FAILED || cb_res == 0x400) return STR_UNDEFINED;
if (cb_res > 0x400) {

6
src/newgrf_spritegroup.h
View File

@ -373,12 +373,6 @@ struct ResolverObject {
uint8 count;
uint8 station_size;
} generic;
struct {
struct Station *st; ///< Station of the airport for which the callback is run, or NULL for build gui.
byte airport_id; ///< Type of airport for which the callback is run
byte layout; ///< Layout of the airport to build.
TileIndex tile; ///< Tile for the callback, only valid for airporttile callbacks.
} airport;
} u;
uint32 (*GetRandomBits)(const struct ResolverObject*);