ChillPP: Add support for loading compatible linkgraph settings

README.md

@@ -289,7 +289,7 @@ See [jgrpp-changelog.md](jgrpp-changelog.md) for changelog.
 * This is not guaranteed to be bug free  
 * Speed signals are cleared, leaving ordinary signals  
 * Various vehicle, economy, town and other settings are not supported  
-* Link graph data and settings are cleared  
+* Link graph data (but not settings) is cleared  
 * Train stuck counters, traffic lights and other features not in this patch pack are dropped/ignored.
 
 #### A note on branches

src/saveload/afterload.cpp

@@ -846,7 +846,7 @@ bool AfterLoadGame()
 		_settings_game.construction.max_tunnel_length = 64;
 	}
 	if (IsSavegameVersionBefore(SLV_166))  _settings_game.economy.infrastructure_maintenance = false;
-	if (IsSavegameVersionBefore(SLV_183)) {
+	if (IsSavegameVersionBefore(SLV_183) && SlXvIsFeatureMissing(XSLFI_CHILLPP)) {
 		_settings_game.linkgraph.distribution_pax = DT_MANUAL;
 		_settings_game.linkgraph.distribution_mail = DT_MANUAL;
 		_settings_game.linkgraph.distribution_armoured = DT_MANUAL;

src/settings.cpp

@@ -1532,6 +1532,11 @@ static int OrderTownGrowthRate(uint nth)
 
 /* Begin - xref conversion callbacks */
 
+static int64 LinkGraphDistModeXrefChillPP(int64 val)
+{
+	return val ^ 2;
+}
+
 /* End - xref conversion callbacks */
 
 /**

src/table/settings.ini

@@ -67,6 +67,8 @@ static int OrderTownGrowthRate(uint nth);
 
 /* Begin - xref conversion callbacks */
 
+static int64 LinkGraphDistModeXrefChillPP(int64 val);
+
 /* End - xref conversion callbacks */
 
 static const SettingDescEnumEntry _linkgraph_mode_symmetric[] = {
@@ -2640,9 +2642,50 @@ extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP, SL_CHILLPP_232)
 length   = 6
 extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP, SL_CHILLPP_232)
 
-;; linkgraph...
+[SDT_XREF]
+xref     = ""linkgraph.recalc_interval""
+xrefcvt  = LinkGraphDistModeXrefChillPP
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP)
+
+[SDT_XREF]
+xref     = ""linkgraph.distribution_pax""
+xrefcvt  = LinkGraphDistModeXrefChillPP
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP)
+
+[SDT_XREF]
+xref     = ""linkgraph.distribution_mail""
+xrefcvt  = LinkGraphDistModeXrefChillPP
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP)
+
+;; linkgraph.distribution_express
 [SDT_NULL]
-length   = 11
+length   = 1
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP)
+
+[SDT_XREF]
+xref     = ""linkgraph.distribution_armoured""
+xrefcvt  = LinkGraphDistModeXrefChillPP
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP)
+
+[SDT_XREF]
+xref     = ""linkgraph.distribution_default""
+xrefcvt  = LinkGraphDistModeXrefChillPP
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP)
+
+[SDT_XREF]
+xref     = ""linkgraph.accuracy""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP)
+
+[SDT_XREF]
+xref     = ""linkgraph.demand_size""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP)
+
+[SDT_XREF]
+xref     = ""linkgraph.demand_distance""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP)
+
+[SDT_XREF]
+xref     = ""linkgraph.short_path_saturation""
 extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_CHILLPP)
 
 ;; linkgraph.no_overload_links