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Diffstat (limited to 'src/newgrf_class_func.h')
| -rw-r--r-- | src/newgrf_class_func.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/newgrf_class_func.h b/src/newgrf_class_func.h new file mode 100644 index 000000000..bd83376f7 --- /dev/null +++ b/src/newgrf_class_func.h @@ -0,0 +1,132 @@ +/* $Id$ */ + +/* + * 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 "stdafx.h" +#include "core/alloc_func.hpp" +#include "newgrf_class.h" + +#include "table/strings.h" + +#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]; + +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(); +} + +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; +} + +DEFINE_NEWGRF_CLASS_METHOD(void)::SetName(Tid cls_id, StringID name) +{ + assert(cls_id < Tmax); + classes[cls_id].name = name; +} + +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; +} + +DEFINE_NEWGRF_CLASS_METHOD(StringID)::GetName(Tid cls_id) +{ + assert(cls_id < Tmax); + return classes[cls_id].name; +} + +DEFINE_NEWGRF_CLASS_METHOD(uint)::GetCount() +{ + uint i; + for (i = 0; i < Tmax && classes[i].global_id != 0; i++) {} + return i; +} + +DEFINE_NEWGRF_CLASS_METHOD(uint)::GetCount(Tid cls_id) +{ + assert(cls_id < Tmax); + return classes[cls_id].count; +} + +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; +} + +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); |