Basic development

src/main/java/net/xevianlight/aphelion/client/AphelionDebugOverlay.java

@@ -0,0 +1,44 @@
+package net.xevianlight.aphelion.client;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.resources.ResourceLocation;
+import net.neoforged.bus.api.SubscribeEvent;
+import net.neoforged.fml.common.EventBusSubscriber;
+import net.neoforged.api.distmarker.Dist;
+import net.neoforged.neoforge.client.event.CustomizeGuiOverlayEvent;
+import net.xevianlight.aphelion.Aphelion;
+import net.xevianlight.aphelion.client.dimension.DimensionRenderer;
+import net.xevianlight.aphelion.client.dimension.DimensionRendererCache;
+import net.xevianlight.aphelion.client.dimension.SpaceSkyEffects;
+
+@EventBusSubscriber(modid = Aphelion.MOD_ID, value = Dist.CLIENT)
+public class AphelionDebugOverlay {
+
+    @SubscribeEvent
+    public static void onDebugText(CustomizeGuiOverlayEvent.DebugText event) {
+        Minecraft mc = Minecraft.getInstance();
+        if (mc.level == null || mc.player == null) return;
+
+        // Only show in your space dimension (optional)
+        if (!mc.level.dimension().location().equals(ResourceLocation.fromNamespaceAndPath(Aphelion.MOD_ID, "space"))) {
+            return;
+        }
+
+        var camPos = mc.gameRenderer.getMainCamera().getPosition();
+        ResourceLocation orbitId = SpaceSkyEffects.orbitForPos(camPos);
+
+        DimensionRenderer r = DimensionRendererCache.getOrDefault(orbitId);
+
+        String rendererSummary = (r == null)
+                ? "<missing>"
+                : ("customSky=" + r.customSky()
+                + ", thickFog=" + r.hasThickFog()
+                + ", fog=" + r.hasFog());
+
+        // Left side of F3
+        event.getLeft().add("");
+        event.getLeft().add("Aphelion:");
+        event.getLeft().add(" Orbit: " + orbitId);
+        event.getLeft().add(" Sky: " + rendererSummary);
+    }
+}