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Location: cpp/openttd-patchpack/source/src/newgrf_class_func.h - annotation
r18910:efc242019ff6
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(svn r23770) -Fix: compilation with GCC 4.7
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/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file newgrf_class_func.h Implementation of the NewGRF class' functions. */
#include "newgrf_class.h"
#include "table/strings.h"
/**
* Helper for defining the class method's signatures.
* @param type The type of the class.
*/
#define DEFINE_NEWGRF_CLASS_METHOD(type) \
template <typename Tspec, typename Tid, Tid Tmax> \
type NewGRFClass<Tspec, Tid, Tmax>
/** Instantiate the array. */
template <typename Tspec, typename Tid, Tid Tmax>
NewGRFClass<Tspec, Tid, Tmax> NewGRFClass<Tspec, Tid, Tmax>::classes[Tmax];
/** Reset the classes, i.e. clear everything. */
DEFINE_NEWGRF_CLASS_METHOD(void)::Reset()
{
for (Tid i = (Tid)0; i < Tmax; i++) {
classes[i].global_id = 0;
classes[i].name = STR_EMPTY;
classes[i].count = 0;
free(classes[i].spec);
classes[i].spec = NULL;
}
InsertDefaults();
}
/**
* Allocate a class with a given global class ID.
* @param cls_id The global class id, such as 'DFLT'.
* @return The (non global!) class ID for the class.
* @note Upon allocating the same global class ID for a
* second time, this first allocation will be given.
*/
DEFINE_NEWGRF_CLASS_METHOD(Tid)::Allocate(uint32 global_id)
{
for (Tid i = (Tid)0; i < Tmax; i++) {
if (classes[i].global_id == global_id) {
/* ClassID is already allocated, so reuse it. */
return i;
} else if (classes[i].global_id == 0) {
/* This class is empty, so allocate it to the global id. */
classes[i].global_id = global_id;
return i;
}
}
grfmsg(2, "ClassAllocate: already allocated %d classes, using default", Tmax);
return (Tid)0;
}
/**
* Set the name of a particular class.
* @param cls_id The id for the class.
* @pre index < GetCount(cls_id)
* @param name The new name for the class.
*/
DEFINE_NEWGRF_CLASS_METHOD(void)::SetName(Tid cls_id, StringID name)
{
assert(cls_id < Tmax);
classes[cls_id].name = name;
}
/**
* Assign a spec to one of the classes.
* @param spec The spec to assign.
* @note The spec must have a valid class id set.
*/
DEFINE_NEWGRF_CLASS_METHOD(void)::Assign(Tspec *spec)
{
assert(spec->cls_id < Tmax);
NewGRFClass<Tspec, Tid, Tmax> *cls = &classes[spec->cls_id];
uint i = cls->count++;
cls->spec = ReallocT(cls->spec, cls->count);
cls->spec[i] = spec;
}
/**
* Get the name of a particular class.
* @param cls_id The class to get the name of.
* @pre index < GetCount(cls_id)
* @return The name of said class.
*/
DEFINE_NEWGRF_CLASS_METHOD(StringID)::GetName(Tid cls_id)
{
assert(cls_id < Tmax);
return classes[cls_id].name;
}
/**
* Get the number of allocated classes.
* @return The number of classes.
*/
DEFINE_NEWGRF_CLASS_METHOD(uint)::GetCount()
{
uint i;
for (i = 0; i < Tmax && classes[i].global_id != 0; i++) {}
return i;
}
/**
* Get the number of allocated specs within a particular class.
* @param cls_id The class to get the size of.
* @pre cls_id < GetCount()
* @return The size of the class.
*/
DEFINE_NEWGRF_CLASS_METHOD(uint)::GetCount(Tid cls_id)
{
assert(cls_id < Tmax);
return classes[cls_id].count;
}
/**
* Get a spec from a particular class at a given index.
* @param cls_id The class to get the spec from.
* @param index The index where to find the spec.
* @pre index < GetCount(cls_id)
* @return The spec at given location.
*/
DEFINE_NEWGRF_CLASS_METHOD(const Tspec *)::Get(Tid cls_id, uint index)
{
assert(cls_id < Tmax);
if (index < classes[cls_id].count) return classes[cls_id].spec[index];
/* If the custom spec isn't defined any more, then the GRF file probably was not loaded. */
return NULL;
}
/**
* Retrieve a spec by GRF location.
* @param grfid GRF ID of spec.
* @param local_id Index within GRF file of spec.
* @param index Pointer to return the index of the spec in its class. If NULL then not used.
* @return The spec.
*/
DEFINE_NEWGRF_CLASS_METHOD(const Tspec *)::GetByGrf(uint32 grfid, byte local_id, int *index)
{
uint j;
for (Tid i = (Tid)0; i < Tmax; i++) {
for (j = 0; j < classes[i].count; j++) {
const Tspec *spec = classes[i].spec[j];
if (spec == NULL) continue;
if (spec->grf_prop.grffile->grfid == grfid && spec->grf_prop.local_id == local_id) {
if (index != NULL) *index = j;
return spec;
}
}
}
return NULL;
}
#undef DEFINE_NEWGRF_CLASS_METHOD
/** Force instantiation of the methods so we don't get linker errors. */
#define INSTANTIATE_NEWGRF_CLASS_METHODS(name, Tspec, Tid, Tmax) \
template void name::Reset(); \
template Tid name::Allocate(uint32 global_id); \
template void name::SetName(Tid cls_id, StringID name); \
template void name::Assign(Tspec *spec); \
template StringID name::GetName(Tid cls_id); \
template uint name::GetCount(); \
template uint name::GetCount(Tid cls_id); \
template const Tspec *name::Get(Tid cls_id, uint index); \
template const Tspec *name::GetByGrf(uint32 grfid, byte localidx, int *index);
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