OpenTTD-patches/src/newgrf_townname.cpp
Jonathan G Rennison f034714559 Use StringBuilder for GetString/GetStringWithArgs, as per upstream
Update dependent code as required
2024-01-05 21:12:54 +00:00

125 lines
3.5 KiB
C++

/*
* 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_townname.cpp
* Implementation of Action 0F "universal holder" structure and functions.
* This file implements a linked-lists of townname generators,
* holding everything that the newgrf action 0F will send over to OpenTTD.
*/
#include "stdafx.h"
#include "newgrf_townname.h"
#include "core/alloc_func.hpp"
#include "string_func.h"
#include "strings_internal.h"
#include "table/strings.h"
#include "safeguards.h"
static std::vector<GRFTownName> _grf_townnames;
static std::vector<StringID> _grf_townname_names;
GRFTownName *GetGRFTownName(uint32_t grfid)
{
auto found = std::find_if(std::begin(_grf_townnames), std::end(_grf_townnames), [&grfid](const GRFTownName &t){ return t.grfid == grfid; });
if (found != std::end(_grf_townnames)) return &*found;
return nullptr;
}
GRFTownName *AddGRFTownName(uint32_t grfid)
{
GRFTownName *t = GetGRFTownName(grfid);
if (t == nullptr) {
t = &_grf_townnames.emplace_back();
t->grfid = grfid;
}
return t;
}
void DelGRFTownName(uint32_t grfid)
{
_grf_townnames.erase(std::find_if(std::begin(_grf_townnames), std::end(_grf_townnames), [&grfid](const GRFTownName &t){ return t.grfid == grfid; }));
}
static void RandomPart(StringBuilder builder, const GRFTownName *t, uint32_t seed, byte id)
{
assert(t != nullptr);
for (const auto &partlist : t->partlists[id]) {
byte count = partlist.bitcount;
uint16_t maxprob = partlist.maxprob;
uint32_t r = (GB(seed, partlist.bitstart, count) * maxprob) >> count;
for (const auto &part : partlist.parts) {
maxprob -= GB(part.prob, 0, 7);
if (maxprob > r) continue;
if (HasBit(part.prob, 7)) {
RandomPart(builder, t, seed, part.id);
} else {
builder += part.text;
}
break;
}
}
}
void GRFTownNameGenerate(StringBuilder builder, uint32_t grfid, uint16_t gen, uint32_t seed)
{
const GRFTownName *t = GetGRFTownName(grfid);
if (t != nullptr) {
assert(gen < t->styles.size());
RandomPart(builder, t, seed, t->styles[gen].id);
}
}
/** Allocate memory for the NewGRF town names. */
void InitGRFTownGeneratorNames()
{
_grf_townname_names.clear();
for (const auto &t : _grf_townnames) {
for (const auto &style : t.styles) {
_grf_townname_names.push_back(style.name);
}
}
}
const std::vector<StringID> &GetGRFTownNameList()
{
return _grf_townname_names;
}
StringID GetGRFTownNameName(uint16_t gen)
{
return gen < _grf_townname_names.size() ? _grf_townname_names[gen] : STR_UNDEFINED;
}
void CleanUpGRFTownNames()
{
_grf_townnames.clear();
}
uint32_t GetGRFTownNameId(uint16_t gen)
{
for (const auto &t : _grf_townnames) {
if (gen < t.styles.size()) return t.grfid;
gen -= static_cast<uint16_t>(t.styles.size());
}
/* Fallback to no NewGRF */
return 0;
}
uint16_t GetGRFTownNameType(uint16_t gen)
{
for (const auto &t : _grf_townnames) {
if (gen < t.styles.size()) return gen;
gen -= static_cast<uint16_t>(t.styles.size());
}
/* Fallback to english original */
return SPECSTR_TOWNNAME_ENGLISH;
}