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stage2/ml9: Support NeoForge merging ModLauncher into FancyModLoader #27

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Merged
Johni0702 merged 1 commit into from
Aug 1, 2025
Merged

stage2/ml9: Support NeoForge merging ModLauncher into FancyModLoader #27

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15 changes: 13 additions & 2 deletions ...modlauncher9/src/main/java/gg/essential/loader/stage2/EssentialTransformationService.java
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Original file line number Diff line number Diff line change
Expand Up @@ -24,11 +24,16 @@

public class EssentialTransformationService implements ITransformationService {
private static final Logger LOGGER = LogManager.getLogger(EssentialTransformationService.class);
private static final Map<String, String> COMPATIBILITY_IMPLEMENTATIONS = Map.of(
private static final Map<String, String> ML_COMPATIBILITY_IMPLEMENTATIONS = Map.of(
"11.", "ML11CompatibilityLayer",
"10.", "ML10CompatibilityLayer",
"9.", "ML9CompatibilityLayer"
);
// NeoForge as of 1.21.7 has merged ModLauncher into FancyModLoader and reports the version of that instead of
// ModLauncher.
private static final Map<String, String> FMLML_COMPATIBILITY_IMPLEMENTATIONS = Map.of(
"9.", "ML11CompatibilityLayer"
);
private static CompatibilityLayer compatibilityLayer;

private final Path gameDir;
Expand Down Expand Up @@ -82,7 +87,13 @@ public void initialize(IEnvironment environment) {
@SuppressWarnings("unchecked")
private CompatibilityLayer findCompatibilityLayerImpl(String mlVersion) {
String implementation = null;
for (Map.Entry<String, String> entry : COMPATIBILITY_IMPLEMENTATIONS.entrySet()) {
Map<String, String> impls;
if ("fml_loader".equals(ITransformationService.class.getModule().getName())) {
impls = FMLML_COMPATIBILITY_IMPLEMENTATIONS;
} else {
impls = ML_COMPATIBILITY_IMPLEMENTATIONS;
}
for (Map.Entry<String, String> entry : impls.entrySet()) {
if (mlVersion.startsWith(entry.getKey())) {
implementation = entry.getValue();
break;
Expand Down