a bit of patchouli-based reorganization

src/main/java/de/ellpeck/naturesaura/blocks/multi/Multiblock.java

@@ -3,13 +3,12 @@ package de.ellpeck.naturesaura.blocks.multi;
 import de.ellpeck.naturesaura.api.NaturesAuraAPI;
 import de.ellpeck.naturesaura.api.multiblock.IMultiblock;
 import de.ellpeck.naturesaura.api.multiblock.Matcher;
-import de.ellpeck.naturesaura.api.multiblock.Matcher.ICheck;
+import de.ellpeck.naturesaura.compat.patchouli.PatchouliCompat;
 import net.minecraft.block.Block;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
-import vazkii.patchouli.api.PatchouliAPI;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -103,19 +102,7 @@ public class Multiblock implements IMultiblock {
                         this.matchers.put(new BlockPos(x, y, z), matcher);
                 }
 
-        for (int i = 1; i < rawMatchers.length; i += 2) {
+        PatchouliCompat.addPatchouliMultiblock(name, pattern, rawMatchers);
-            if (rawMatchers[i] instanceof Matcher) {
-                Matcher matcher = (Matcher) rawMatchers[i];
-                ICheck check = matcher.getCheck();
-                if (check == null)
-                    rawMatchers[i] = PatchouliAPI.instance.anyMatcher();
-                else
-                    rawMatchers[i] = PatchouliAPI.instance.predicateMatcher(matcher.getDefaultState(),
-                            state -> check.matches(null, null, null, null, state, (char) 0));
-            }
-        }
-        PatchouliAPI.instance.registerMultiblock(name, PatchouliAPI.instance.makeMultiblock(pattern, rawMatchers));
-
         NaturesAuraAPI.MULTIBLOCKS.put(this.name, this);
     }
 

src/main/java/de/ellpeck/naturesaura/compat/Compat.java

@@ -3,9 +3,9 @@ package de.ellpeck.naturesaura.compat;
 import de.ellpeck.naturesaura.ModConfig;
 import de.ellpeck.naturesaura.NaturesAura;
 import de.ellpeck.naturesaura.compat.crafttweaker.CraftTweakerCompat;
+import de.ellpeck.naturesaura.compat.patchouli.PatchouliCompat;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.Loader;
-import vazkii.patchouli.api.PatchouliAPI;
 
 public final class Compat {
 
@@ -21,7 +21,11 @@ public final class Compat {
         if (baubles)
             MinecraftForge.EVENT_BUS.register(new BaublesCompat());
 
-        PatchouliAPI.instance.setConfigFlag(NaturesAura.MOD_ID + ":rf_converter", ModConfig.enabledFeatures.rfConverter);
+        PatchouliCompat.preInit();
+    }
+
+    public static void preInitClient(){
+        PatchouliCompat.preInitClient();
     }
 
     public static void postInit() {

src/main/java/de/ellpeck/naturesaura/compat/patchouli/PatchouliCompat.java

@@ -0,0 +1,39 @@
+package de.ellpeck.naturesaura.compat.patchouli;
+
+import de.ellpeck.naturesaura.ModConfig;
+import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.api.multiblock.Matcher;
+import net.minecraft.util.ResourceLocation;
+import vazkii.patchouli.api.PatchouliAPI;
+
+public final class PatchouliCompat {
+
+    public static Class bookGuiClass;
+
+    public static void preInit() {
+        PatchouliAPI.instance.setConfigFlag(NaturesAura.MOD_ID + ":rf_converter", ModConfig.enabledFeatures.rfConverter);
+    }
+
+    public static void preInitClient() {
+        try {
+            bookGuiClass = Class.forName("vazkii.patchouli.client.book.gui.GuiBook");
+        } catch (ClassNotFoundException e) {
+            NaturesAura.LOGGER.warn("Couldn't find Patchouli book class, not loading special visuals :(");
+        }
+    }
+
+    public static void addPatchouliMultiblock(ResourceLocation name, String[][] pattern, Object... rawMatchers) {
+        for (int i = 1; i < rawMatchers.length; i += 2) {
+            if (rawMatchers[i] instanceof Matcher) {
+                Matcher matcher = (Matcher) rawMatchers[i];
+                Matcher.ICheck check = matcher.getCheck();
+                if (check == null)
+                    rawMatchers[i] = PatchouliAPI.instance.anyMatcher();
+                else
+                    rawMatchers[i] = PatchouliAPI.instance.predicateMatcher(matcher.getDefaultState(),
+                            state -> check.matches(null, null, null, null, state, (char) 0));
+            }
+        }
+        PatchouliAPI.instance.registerMultiblock(name, PatchouliAPI.instance.makeMultiblock(pattern, rawMatchers));
+    }
+}

src/main/java/de/ellpeck/naturesaura/events/ClientEvents.java

@@ -13,6 +13,7 @@ import de.ellpeck.naturesaura.blocks.tiles.TileEntityGratedChute;
 import de.ellpeck.naturesaura.blocks.tiles.TileEntityNatureAltar;
 import de.ellpeck.naturesaura.blocks.tiles.TileEntityRFConverter;
 import de.ellpeck.naturesaura.compat.Compat;
+import de.ellpeck.naturesaura.compat.patchouli.PatchouliCompat;
 import de.ellpeck.naturesaura.items.ItemRangeVisualizer;
 import de.ellpeck.naturesaura.items.ModItems;
 import de.ellpeck.naturesaura.particles.ParticleHandler;
@@ -22,8 +23,11 @@ import net.minecraft.block.state.IBlockState;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.Gui;
 import net.minecraft.client.gui.GuiChat;
+import net.minecraft.client.gui.GuiScreen;
 import net.minecraft.client.gui.ScaledResolution;
 import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.client.renderer.OpenGlHelper;
+import net.minecraft.client.renderer.RenderHelper;
 import net.minecraft.client.resources.I18n;
 import net.minecraft.entity.Entity;
 import net.minecraft.init.Items;
@@ -37,11 +41,13 @@ import net.minecraft.util.math.MathHelper;
 import net.minecraft.util.text.TextFormatting;
 import net.minecraft.world.World;
 import net.minecraft.world.biome.BiomeColorHelper;
+import net.minecraftforge.client.event.GuiScreenEvent;
 import net.minecraftforge.client.event.RenderGameOverlayEvent;
 import net.minecraftforge.client.event.RenderGameOverlayEvent.ElementType;
 import net.minecraftforge.client.event.RenderWorldLastEvent;
 import net.minecraftforge.common.IPlantable;
 import net.minecraftforge.energy.EnergyStorage;
+import net.minecraftforge.fml.client.config.GuiUtils;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.TickEvent.ClientTickEvent;
 import net.minecraftforge.fml.common.gameevent.TickEvent.Phase;
@@ -52,6 +58,9 @@ import org.apache.commons.lang3.mutable.MutableInt;
 import org.lwjgl.opengl.GL11;
 
 import java.text.NumberFormat;
+import java.time.LocalDateTime;
+import java.time.Month;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -60,6 +69,7 @@ import java.util.Map;
 public class ClientEvents {
 
     public static final ResourceLocation OVERLAYS = new ResourceLocation(NaturesAura.MOD_ID, "textures/gui/overlays.png");
+    private static final ResourceLocation BOOK_GUI = new ResourceLocation(NaturesAura.MOD_ID, "textures/gui/book.png");
     private static final ItemStack ITEM_FRAME = new ItemStack(Items.ITEM_FRAME);
     private static final Map<ResourceLocation, Tuple<ItemStack, Boolean>> SHOWING_EFFECTS = new HashMap<>();
     private static ItemStack heldCache = ItemStack.EMPTY;
@@ -95,6 +105,29 @@ public class ClientEvents {
         mc.profiler.endSection();
     }
 
+    @SubscribeEvent
+    public void onGuiRender(GuiScreenEvent.DrawScreenEvent.Post event) {
+        GuiScreen gui = event.getGui();
+        if (PatchouliCompat.bookGuiClass != null && PatchouliCompat.bookGuiClass.isAssignableFrom(gui.getClass())) {
+            int mouseX = event.getMouseX();
+            int mouseY = event.getMouseY();
+            LocalDateTime now = LocalDateTime.now();
+            if (now.getMonth() == Month.MAY && now.getDayOfMonth() == 21) {
+                int x = gui.width / 2 + 272 / 2 - 16;
+                int y = gui.height / 2 - 180 / 2 - 26;
+
+                RenderHelper.disableStandardItemLighting();
+                GlStateManager.color(1, 1, 1, 1);
+                gui.mc.getTextureManager().bindTexture(BOOK_GUI);
+                Gui.drawModalRectWithCustomSizedTexture(x, y, 469, 0, 43, 42, 512, 256);
+
+                if (mouseX >= x && mouseY >= y && mouseX < x + 43 && mouseY < y + 42)
+                    GuiUtils.drawHoveringText(Collections.singletonList(TextFormatting.GOLD + "It's the author Ellpeck's birthday!"),
+                            mouseX, mouseY, gui.width, gui.height, 0, gui.mc.fontRenderer);
+            }
+        }
+    }
+
     @SubscribeEvent
     public void onRenderLast(RenderWorldLastEvent event) {
         Minecraft mc = Minecraft.getMinecraft();

src/main/java/de/ellpeck/naturesaura/proxy/ClientProxy.java

@@ -1,5 +1,6 @@
 package de.ellpeck.naturesaura.proxy;
 
+import de.ellpeck.naturesaura.compat.Compat;
 import de.ellpeck.naturesaura.events.ClientEvents;
 import de.ellpeck.naturesaura.particles.ParticleHandler;
 import de.ellpeck.naturesaura.particles.ParticleMagic;
@@ -35,6 +36,7 @@ public class ClientProxy implements IProxy {
     @Override
     public void preInit(FMLPreInitializationEvent event) {
         MinecraftForge.EVENT_BUS.register(new ClientEvents());
+        Compat.preInitClient();
     }
 
     @Override