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(svn r6870) - Codechange: (re-)unify the code to retrieve the sprite group for a vehicle.

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This commit is contained in:
peter1138 2006-10-21 14:53:57 +00:00
parent 165d65a7d0
commit 051181f9c2
1 changed files with 37 additions and 55 deletions
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92
newgrf_engine.c
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@ -858,27 +858,47 @@ static inline void NewVehicleResolver(ResolverObject *res, EngineID engine_type,
}
/** Retrieve the SpriteGroup for the specified vehicle.
* If the vehicle is not specified, the purchase list group for the engine is
* chosen. For trains, an additional engine override lookup is performed.
* @param engine Engine type of the vehicle.
* @param v The vehicle itself.
* @returns The selected SpriteGroup for the vehicle.
*/
static const SpriteGroup *GetVehicleSpriteGroup(EngineID engine, const Vehicle *v)
{
const SpriteGroup *group;
CargoID cargo;
if (v == NULL) {
cargo = GC_PURCHASE;
} else {
cargo = _global_cargo_id[_opt.landscape][v->cargo_type];
assert(cargo != GC_INVALID);
if (v->type == VEH_Train) {
group = GetWagonOverrideSpriteSet(engine, cargo, v->u.rail.first_engine);
if (group != NULL) return group;
}
}
group = engine_custom_sprites[engine][cargo];
if (group != NULL) return group;
/* Fall back to the default set if the selected cargo type is not defined */
return engine_custom_sprites[engine][GC_DEFAULT];
}
SpriteID GetCustomEngineSprite(EngineID engine, const Vehicle *v, Direction direction)
{
const SpriteGroup *group;
ResolverObject object;
CargoID cargo;
NewVehicleResolver(&object, engine, v);
cargo = (v == NULL) ? GC_PURCHASE : _global_cargo_id[_opt.landscape][v->cargo_type];
assert(cargo != GC_INVALID);
group = engine_custom_sprites[engine][cargo];
if (v != NULL && v->type == VEH_Train) {
const SpriteGroup *overset = GetWagonOverrideSpriteSet(engine, cargo, v->u.rail.first_engine);
if (overset != NULL) group = overset;
}
if (group == NULL) group = engine_custom_sprites[engine][GC_DEFAULT];
group = Resolve(group, &object);
group = Resolve(GetVehicleSpriteGroup(engine, v), &object);
if (group == NULL || group->type != SGT_RESULT) return 0;
return group->g.result.sprite + (direction % group->g.result.num_sprites);
@ -935,7 +955,6 @@ uint16 GetVehicleCallback(uint16 callback, uint32 param1, uint32 param2, EngineI
{
const SpriteGroup *group;
ResolverObject object;
CargoID cargo;
NewVehicleResolver(&object, engine, v);
@ -943,19 +962,7 @@ uint16 GetVehicleCallback(uint16 callback, uint32 param1, uint32 param2, EngineI
object.callback_param1 = param1;
object.callback_param2 = param2;
cargo = (v == NULL) ? GC_PURCHASE : _global_cargo_id[_opt.landscape][v->cargo_type];
assert(cargo != GC_INVALID);
group = engine_custom_sprites[engine][cargo];
if (v != NULL && v->type == VEH_Train) {
const SpriteGroup *overset = GetWagonOverrideSpriteSet(engine, cargo, v->u.rail.first_engine);
if (overset != NULL) group = overset;
}
if (group == NULL) group = engine_custom_sprites[engine][GC_DEFAULT];
group = Resolve(group, &object);
group = Resolve(GetVehicleSpriteGroup(engine, v), &object);
if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;
return group->g.callback.result;
@ -975,7 +982,6 @@ uint16 GetVehicleCallbackParent(uint16 callback, uint32 param1, uint32 param2, E
{
const SpriteGroup *group;
ResolverObject object;
CargoID cargo;
NewVehicleResolver(&object, engine, v);
@ -985,19 +991,7 @@ uint16 GetVehicleCallbackParent(uint16 callback, uint32 param1, uint32 param2, E
object.u.vehicle.parent = parent;
cargo = (v == NULL) ? GC_PURCHASE : _global_cargo_id[_opt.landscape][v->cargo_type];
assert(cargo != GC_INVALID);
group = engine_custom_sprites[engine][cargo];
if (v != NULL && v->type == VEH_Train) {
const SpriteGroup *overset = GetWagonOverrideSpriteSet(engine, cargo, v->u.rail.first_engine);
if (overset != NULL) group = overset;
}
if (group == NULL) group = engine_custom_sprites[engine][GC_DEFAULT];
group = Resolve(group, &object);
group = Resolve(GetVehicleSpriteGroup(engine, v), &object);
if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;
return group->g.callback.result;
@ -1007,7 +1001,6 @@ static void DoTriggerVehicle(Vehicle *v, VehicleTrigger trigger, byte base_rando
{
const SpriteGroup *group;
ResolverObject object;
CargoID cargo;
byte new_random_bits;
/* We can't trigger a non-existent vehicle... */
@ -1017,18 +1010,7 @@ static void DoTriggerVehicle(Vehicle *v, VehicleTrigger trigger, byte base_rando
object.trigger = trigger;
cargo = _global_cargo_id[_opt.landscape][v->cargo_type];
assert(cargo != GC_INVALID);
group = engine_custom_sprites[v->engine_type][cargo];
if (v->type == VEH_Train) {
const SpriteGroup *overset = GetWagonOverrideSpriteSet(v->engine_type, cargo, v->u.rail.first_engine);
if (overset != NULL) group = overset;
}
if (group == NULL) group = engine_custom_sprites[v->engine_type][GC_DEFAULT];
group = Resolve(group, &object);
group = Resolve(GetVehicleSpriteGroup(v->engine_type, v), &object);
new_random_bits = Random();
v->random_bits &= ~object.reseed;