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--- tutorial:fluids [2019/09/24 11:28] – client side operations (rendering) alexiy
+++ tutorial:fluids [2019/09/24 14:52] – how to add fluids to tags alexiy
@@ Line 100: / Line 100: @@
     public abstract boolean matchesType(Fluid fluid_1);
-    /**
-     * Required for entities to behave in this fluid like in water
-     */
-    @Override
-    public boolean matches(Tag<Fluid> tag_1)
-    {
-        return tag_1 == FluidTags.WATER;
-    }
 }
 </code>
@@ Line 215: / Line 207: @@
         Registry.register(Registry.ITEM,new Identifier(MODID,"acid_bucket"),acidBucket);
     }
+</code>
+To make the custom fluid behave like water or lava, you must add it to a corresponding fluid tag: make a file "data/minecraft/tags/fluids/water.json" and write identifiers of your fluids in there:
+<code json>
+{
+  "replace": false,
+  "values": [
+    "modid:acid_still",
+    "modid:acid_flowing"
+  ]
+}
 </code>
@@ Line 337: / Line 340: @@
 Then what's left to do is to create necessary Json files and textures, but you should know how to do that at this point.
+===== Generation in a world =====
+To make acid lakes generate in the world, you can use **net.minecraft.world.gen.feature.LakeFeature**, which you create in the ModInitializer:
+<code java>
+        LakeFeature acidFeature=Registry.register(Registry.FEATURE,new Identifier(MODID,"acid_lake"),new LakeFeature(dynamic -> new LakeFeatureConfig(acid.getDefaultState())));
+</code>
+Then put it into desired biomes to generate:
+<code java>
+        // I tell it to generate like water lakes, with a rarity of 40 (the higher is the number, the lesser is the generation chance):
+        Biomes.FOREST.addFeature(GenerationStep.Feature.LOCAL_MODIFICATIONS, Biome.configureFeature(acidFeature,new LakeFeatureConfig(acid.getDefaultState()), Decorator.WATER_LAKE,new LakeDecoratorConfig(40)));
+</code>
+This is the end of the tutorial.