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Fix #8846: When upgrading NewGRF presets, copy NewGRF parameters only if the NewGRF are compatible. Otherwise reset to defaults.

pull/11342/head
frosch 2023-10-01 15:21:57 +02:00 committed by frosch
parent d75a5e1a9a
commit 82c8720814
3 changed files with 15 additions and 2 deletions
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10
src/newgrf_config.cpp
View File

@ -66,6 +66,14 @@ GRFConfig::GRFConfig(const GRFConfig &config) :
{
}
/**
* Return whether this NewGRF can replace an older version of the same NewGRF.
*/
bool GRFConfig::IsCompatible(uint32_t old_version) const
{
return this->min_loadable_version <= old_version && old_version <= this->version;
}
/**
* Copy the parameter information from the \a src config.
* @param src Source config.
@ -685,7 +693,7 @@ const GRFConfig *FindGRFConfig(uint32_t grfid, FindGRFConfigMode mode, const MD5
/* Skip incompatible stuff, unless explicitly allowed */
if (mode != FGCM_NEWEST && HasBit(c->flags, GCF_INVALID)) continue;
/* check version compatibility */
if (mode == FGCM_COMPATIBLE && (c->version < desired_version || c->min_loadable_version > desired_version)) continue;
if (mode == FGCM_COMPATIBLE && !c->IsCompatible(desired_version)) continue;
/* remember the newest one as "the best" */
if (best == nullptr || c->version > best->version) best = c;
}

1
src/newgrf_config.h
View File

@ -173,6 +173,7 @@ struct GRFConfig : ZeroedMemoryAllocator {
struct GRFConfig *next; ///< NOSAVE: Next item in the linked list
bool IsCompatible(uint32_t old_version) const;
void CopyParams(const GRFConfig &src);
std::optional<std::string> GetTextfile(TextfileType type) const;

6
src/newgrf_gui.cpp
View File

@ -723,7 +723,11 @@ struct NewGRFWindow : public Window, NewGRFScanCallback {
while (*c != iter->second) c = &(*c)->next;
GRFConfig *d = new GRFConfig(*a);
d->next = (*c)->next;
d->CopyParams(**c);
if (d->IsCompatible((*c)->version)) {
d->CopyParams(**c);
} else {
d->SetParameterDefaults();
}
if (this->active_sel == *c) {
CloseWindowByClass(WC_GRF_PARAMETERS);
CloseWindowByClass(WC_TEXTFILE);