Add celeritas dynamic lights support

src/main/java/dev/redstudio/fbp/FBP.java

@@ -14,6 +14,7 @@
 import net.minecraft.util.ResourceLocation;
 import net.minecraftforge.client.IRenderHandler;
 import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.fml.common.Loader;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
@@ -71,6 +72,8 @@ public final class FBP {
 
 	public static final VertexFormat VERTEX_FORMAT = new VertexFormat();
 
+	public static final boolean IS_CELERITASDYNAMICLIGHTS_LOADED = Loader.isModLoaded("celeritasdynamiclights");
+
 	@Mod.EventHandler
 	public void preInit(FMLPreInitializationEvent preInitializationEvent) {
 		oldMainConfigFile = new File(preInitializationEvent.getModConfigurationDirectory() + "/fbp/Particle.properties");

src/main/java/dev/redstudio/fbp/compat/CeleritasDynamicLightsHandler.java

@@ -0,0 +1,41 @@
+package dev.redstudio.fbp.compat;
+
+import net.minecraft.util.math.BlockPos;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+
+public class CeleritasDynamicLightsHandler {
+    private static MethodHandle getInstanceHandle;
+    private static MethodHandle getDynamicLightLevelHandle;
+
+    static {
+        try {
+            Class<?> cls = Class.forName("toni.sodiumdynamiclights.SodiumDynamicLights");
+
+            getInstanceHandle = MethodHandles.lookup().findStatic(
+                    cls, "get", MethodType.methodType(cls)
+            );
+
+            getDynamicLightLevelHandle = MethodHandles.lookup().findVirtual(
+                    cls, "getDynamicLightLevel", MethodType.methodType(double.class, BlockPos.class)
+            );
+
+        } catch (Exception ignored) {
+
+        }
+    }
+
+    public static int getDynamicLight(int x, int y, int z) {
+        if (getInstanceHandle == null || getDynamicLightLevelHandle == null) return 0;
+
+        try {
+            Object instance = getInstanceHandle.invoke();
+            double level = (double) getDynamicLightLevelHandle.invoke(instance, new BlockPos(x, y, z));
+            return (int) level;
+        } catch (Throwable t) {
+            return 0;
+        }
+    }
+}

src/main/java/dev/redstudio/fbp/renderer/light/LightUtil.java

@@ -1,10 +1,12 @@
 package dev.redstudio.fbp.renderer.light;
 
+import dev.redstudio.fbp.compat.CeleritasDynamicLightsHandler;
 import dev.redstudio.redcore.math.MathUtil;
 import net.minecraft.world.World;
 import net.minecraft.world.chunk.Chunk;
 import net.minecraft.world.chunk.storage.ExtendedBlockStorage;
 
+import static dev.redstudio.fbp.FBP.IS_CELERITASDYNAMICLIGHTS_LOADED;
 import static dev.redstudio.fbp.FBP.MC;
 
 public class LightUtil {
@@ -49,6 +51,7 @@ public static int getCombinedLight(int x, int y, int z) {
 		world = MC.player.world;
 		chunk = world.getChunk(x >> 4, z >> 4);
 		section = chunk.getBlockStorageArray()[y >> 4];
+		int result;
 		if (section != null) {
 			if (section.get(x & 15, y & 15, z & 15).useNeighborBrightness()) {
 				int light = 0;
@@ -59,15 +62,22 @@ public static int getCombinedLight(int x, int y, int z) {
 				light = getNeighborLight(world, chunk, section, x, y, z - 1, light);
 				light = getNeighborLight(world, chunk, section, x, y, z + 1, light);
 				light = getNeighborLight(world, chunk, section, x - 1, y, z, light);
-				return getNeighborLight(world, chunk, section, x + 1, y, z, light);
+				result = getNeighborLight(world, chunk, section, x + 1, y, z, light);
 			} else {
-				return pack(world.provider.hasSkyLight() ? section.getSkyLight(x & 15, y & 15, z & 15) : 0,
+				result = pack(world.provider.hasSkyLight() ? section.getSkyLight(x & 15, y & 15, z & 15) : 0,
 						section.getBlockLight(x & 15, y & 15, z & 15));
 			}
 		} else {
-			return pack(world.provider.hasSkyLight() && y >= chunk.getHeightMap()[(z & 15) << 4 | (x & 15)] ? 15 : 0,
+			result =  pack(world.provider.hasSkyLight() && y >= chunk.getHeightMap()[(z & 15) << 4 | (x & 15)] ? 15 : 0,
 					0);
 		}
+
+		if(IS_CELERITASDYNAMICLIGHTS_LOADED) {
+			int dynamic = CeleritasDynamicLightsHandler.getDynamicLight(x,y,z);
+			result = pack(sky(result), Math.max(block(result), dynamic));
+		}
+
+		return result;
 	}
 
 	private static int getNeighborLight(World world, Chunk chunk, ExtendedBlockStorage section, int x, int y, int z,