added mystical magnifier

src/main/java/de/ellpeck/naturesaura/Helper.java

@@ -16,6 +16,7 @@ import net.minecraft.entity.item.EntityItemFrame;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.init.SoundEvents;
+import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.crafting.Ingredient;
 import net.minecraft.nbt.NBTBase;
@@ -254,4 +255,41 @@ public final class Helper {
                 highestAmount = stack.getCount();
         return highestAmount;
     }
+
+    @SideOnly(Side.CLIENT)
+    public static void renderWeirdBox(double x, double y, double z, double width, double height, double depth) {
+        GL11.glVertex3d(x, y + height, z);
+        GL11.glVertex3d(x + width, y + height, z);
+        GL11.glVertex3d(x + width, y, z);
+        GL11.glVertex3d(x, y, z);
+        GL11.glVertex3d(x + width, y, z + depth);
+        GL11.glVertex3d(x + width, y, z);
+        GL11.glVertex3d(x + width, y + height, z);
+        GL11.glVertex3d(x + width, y + height, z + depth);
+        GL11.glVertex3d(x + width, y + height, z + depth);
+        GL11.glVertex3d(x, y + height, z + depth);
+        GL11.glVertex3d(x, y, z + depth);
+        GL11.glVertex3d(x + width, y, z + depth);
+        GL11.glVertex3d(x, y + height, z + depth);
+        GL11.glVertex3d(x, y + height, z);
+        GL11.glVertex3d(x, y, z);
+        GL11.glVertex3d(x, y, z + depth);
+        GL11.glVertex3d(x, y + height, z);
+        GL11.glVertex3d(x, y + height, z + depth);
+        GL11.glVertex3d(x + width, y + height, z + depth);
+        GL11.glVertex3d(x + width, y + height, z);
+        GL11.glVertex3d(x + width, y, z);
+        GL11.glVertex3d(x + width, y, z + depth);
+        GL11.glVertex3d(x, y, z + depth);
+        GL11.glVertex3d(x, y, z);
+    }
+
+    public static boolean isHoldingItem(EntityPlayer player, Item item) {
+        for (EnumHand hand : EnumHand.values()) {
+            ItemStack stack = player.getHeldItem(hand);
+            if (!stack.isEmpty() && stack.getItem() == item)
+                return true;
+        }
+        return false;
+    }
 }

src/main/java/de/ellpeck/naturesaura/api/render/IVisualizableBlock.java

@@ -0,0 +1,16 @@
+package de.ellpeck.naturesaura.api.render;
+
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
+
+public interface IVisualizableBlock {
+
+    @SideOnly(Side.CLIENT)
+    AxisAlignedBB getVisualizationBounds(World world, BlockPos pos);
+
+    @SideOnly(Side.CLIENT)
+    int getVisualizationColor(World world, BlockPos pos);
+}

src/main/java/de/ellpeck/naturesaura/blocks/BlockAnimalGenerator.java

@@ -2,6 +2,7 @@ package de.ellpeck.naturesaura.blocks;
 
 import de.ellpeck.naturesaura.Helper;
 import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.api.render.IVisualizableBlock;
 import de.ellpeck.naturesaura.blocks.tiles.TileEntityAnimalGenerator;
 import de.ellpeck.naturesaura.packet.PacketHandler;
 import de.ellpeck.naturesaura.packet.PacketParticles;
@@ -12,16 +13,20 @@ import net.minecraft.entity.INpc;
 import net.minecraft.entity.monster.IMob;
 import net.minecraft.entity.passive.IAnimals;
 import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.MathHelper;
+import net.minecraft.world.World;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.event.entity.living.LivingDeathEvent;
 import net.minecraftforge.event.entity.living.LivingDropsEvent;
 import net.minecraftforge.event.entity.living.LivingEvent;
 import net.minecraftforge.event.entity.living.LivingExperienceDropEvent;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
-public class BlockAnimalGenerator extends BlockContainerImpl {
+public class BlockAnimalGenerator extends BlockContainerImpl implements IVisualizableBlock {
     public BlockAnimalGenerator() {
         super(Material.ROCK, "animal_generator", TileEntityAnimalGenerator.class, "animal_generator");
         this.setSoundType(SoundType.STONE);
@@ -91,4 +96,16 @@ public class BlockAnimalGenerator extends BlockContainerImpl {
         if (entity.getEntityData().getBoolean(NaturesAura.MOD_ID + ":no_drops"))
             event.setCanceled(true);
     }
+
+    @Override
+    @SideOnly(Side.CLIENT)
+    public AxisAlignedBB getVisualizationBounds(World world, BlockPos pos) {
+        return new AxisAlignedBB(pos).grow(5);
+    }
+
+    @Override
+    @SideOnly(Side.CLIENT)
+    public int getVisualizationColor(World world, BlockPos pos) {
+        return 0x11377a;
+    }
 }

src/main/java/de/ellpeck/naturesaura/blocks/BlockContainerImpl.java

@@ -130,7 +130,11 @@ public class BlockContainerImpl extends BlockContainer implements IModItem, ICre
             TileEntity tile = world.getTileEntity(pos);
             if (tile instanceof TileEntityImpl) {
                 TileEntityImpl impl = (TileEntityImpl) tile;
-                impl.redstonePower = world.getRedstonePowerFromNeighbors(pos);
+                int newPower = world.getRedstonePowerFromNeighbors(pos);
+                if (impl.redstonePower != newPower) {
+                    impl.redstonePower = newPower;
+                    impl.onRedstonePowerChange();
+                }
             }
         }
     }

src/main/java/de/ellpeck/naturesaura/blocks/BlockHopperUpgrade.java

@@ -1,13 +1,31 @@
 package de.ellpeck.naturesaura.blocks;
 
+import de.ellpeck.naturesaura.api.render.IVisualizableBlock;
 import de.ellpeck.naturesaura.blocks.tiles.TileEntityHopperUpgrade;
 import net.minecraft.block.SoundType;
 import net.minecraft.block.material.Material;
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
-public class BlockHopperUpgrade extends BlockContainerImpl {
+public class BlockHopperUpgrade extends BlockContainerImpl implements IVisualizableBlock {
     public BlockHopperUpgrade() {
         super(Material.IRON, "hopper_upgrade", TileEntityHopperUpgrade.class, "hopper_upgrade");
         this.setSoundType(SoundType.METAL);
         this.setHardness(2.5F);
     }
+
+    @Override
+    @SideOnly(Side.CLIENT)
+    public AxisAlignedBB getVisualizationBounds(World world, BlockPos pos) {
+        return new AxisAlignedBB(pos).grow(7);
+    }
+
+    @Override
+    @SideOnly(Side.CLIENT)
+    public int getVisualizationColor(World world, BlockPos pos) {
+        return 0x434f3f;
+    }
 }

src/main/java/de/ellpeck/naturesaura/blocks/BlockOakGenerator.java

@@ -2,19 +2,23 @@ package de.ellpeck.naturesaura.blocks;
 
 import de.ellpeck.naturesaura.Helper;
 import de.ellpeck.naturesaura.api.NaturesAuraAPI;
+import de.ellpeck.naturesaura.api.render.IVisualizableBlock;
 import de.ellpeck.naturesaura.blocks.tiles.TileEntityOakGenerator;
 import net.minecraft.block.BlockSapling;
 import net.minecraft.block.SoundType;
 import net.minecraft.block.material.Material;
+import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.event.terraingen.SaplingGrowTreeEvent;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 import java.util.Random;
 
-public class BlockOakGenerator extends BlockContainerImpl {
+public class BlockOakGenerator extends BlockContainerImpl implements IVisualizableBlock {
 
     public BlockOakGenerator() {
         super(Material.WOOD, "oak_generator", TileEntityOakGenerator.class, "oak_generator");
@@ -50,4 +54,16 @@ public class BlockOakGenerator extends BlockContainerImpl {
             });
         }
     }
+
+    @Override
+    @SideOnly(Side.CLIENT)
+    public AxisAlignedBB getVisualizationBounds(World world, BlockPos pos) {
+        return new AxisAlignedBB(pos).grow(10);
+    }
+
+    @Override
+    @SideOnly(Side.CLIENT)
+    public int getVisualizationColor(World world, BlockPos pos) {
+        return 0x2e7a11;
+    }
 }

src/main/java/de/ellpeck/naturesaura/blocks/BlockPickupStopper.java

@@ -1,6 +1,7 @@
 package de.ellpeck.naturesaura.blocks;
 
 import de.ellpeck.naturesaura.Helper;
+import de.ellpeck.naturesaura.api.render.IVisualizableBlock;
 import de.ellpeck.naturesaura.blocks.tiles.TileEntityPickupStopper;
 import de.ellpeck.naturesaura.packet.PacketHandler;
 import de.ellpeck.naturesaura.packet.PacketParticles;
@@ -8,12 +9,17 @@ import net.minecraft.block.SoundType;
 import net.minecraft.block.material.Material;
 import net.minecraft.entity.item.EntityItem;
 import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.event.entity.player.EntityItemPickupEvent;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
-public class BlockPickupStopper extends BlockContainerImpl {
+public class BlockPickupStopper extends BlockContainerImpl implements IVisualizableBlock {
     public BlockPickupStopper() {
         super(Material.ROCK, "pickup_stopper", TileEntityPickupStopper.class, "pickup_stopper");
         this.setSoundType(SoundType.STONE);
@@ -36,7 +42,7 @@ public class BlockPickupStopper extends BlockContainerImpl {
                 if (radius <= 0F)
                     return false;
                 BlockPos stopperPos = stopper.getPos();
-                if (item.getDistanceSq(stopperPos.getX() + 0.5F, stopperPos.getY() + 0.5F, stopperPos.getZ() + 0.5F) > radius * radius)
+                if (!new AxisAlignedBB(stopperPos).grow(radius).intersects(item.getEntityBoundingBox()))
                     return false;
 
                 event.setCanceled(true);
@@ -48,4 +54,22 @@ public class BlockPickupStopper extends BlockContainerImpl {
             });
         }
     }
+
+    @Override
+    @SideOnly(Side.CLIENT)
+    public AxisAlignedBB getVisualizationBounds(World world, BlockPos pos) {
+        TileEntity tile = world.getTileEntity(pos);
+        if (tile instanceof TileEntityPickupStopper) {
+            double radius = ((TileEntityPickupStopper) tile).getRadius();
+            if (radius > 0)
+                return new AxisAlignedBB(pos).grow(radius);
+        }
+        return null;
+    }
+
+    @Override
+    @SideOnly(Side.CLIENT)
+    public int getVisualizationColor(World world, BlockPos pos) {
+        return 0xf4aa42;
+    }
 }

src/main/java/de/ellpeck/naturesaura/blocks/BlockSpawnLamp.java

@@ -2,6 +2,7 @@ package de.ellpeck.naturesaura.blocks;
 
 import de.ellpeck.naturesaura.Helper;
 import de.ellpeck.naturesaura.api.aura.chunk.IAuraChunk;
+import de.ellpeck.naturesaura.api.render.IVisualizableBlock;
 import de.ellpeck.naturesaura.blocks.tiles.TileEntitySpawnLamp;
 import de.ellpeck.naturesaura.packet.PacketHandler;
 import de.ellpeck.naturesaura.packet.PacketParticles;
@@ -10,10 +11,12 @@ import net.minecraft.block.material.Material;
 import net.minecraft.block.state.BlockFaceShape;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.entity.EntityLiving;
+import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.BlockRenderLayer;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
 import net.minecraftforge.common.MinecraftForge;
@@ -23,7 +26,7 @@ import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.relauncher.Side;
 import net.minecraftforge.fml.relauncher.SideOnly;
 
-public class BlockSpawnLamp extends BlockContainerImpl {
+public class BlockSpawnLamp extends BlockContainerImpl implements IVisualizableBlock {
 
     private static final AxisAlignedBB AABB = new AxisAlignedBB(4 / 16F, 0F, 4 / 16F, 12 / 16F, 13 / 16F, 12 / 16F);
 
@@ -50,7 +53,7 @@ public class BlockSpawnLamp extends BlockContainerImpl {
                 return false;
 
             BlockPos lampPos = lamp.getPos();
-            if (pos.distanceSq(lampPos.getX() + 0.5F, lampPos.getY() + 0.5F, lampPos.getZ() + 0.5F) > range * range)
+            if (!new AxisAlignedBB(lampPos).grow(range).contains(new Vec3d(pos)))
                 return false;
 
             EntityLiving entity = (EntityLiving) event.getEntityLiving();
@@ -102,4 +105,23 @@ public class BlockSpawnLamp extends BlockContainerImpl {
     public BlockFaceShape getBlockFaceShape(IBlockAccess worldIn, IBlockState state, BlockPos pos, EnumFacing face) {
         return BlockFaceShape.UNDEFINED;
     }
+
+    @Override
+    @SideOnly(Side.CLIENT)
+    public AxisAlignedBB getVisualizationBounds(World world, BlockPos pos) {
+        TileEntity tile = world.getTileEntity(pos);
+        if (tile instanceof TileEntitySpawnLamp) {
+            int radius = ((TileEntitySpawnLamp) tile).getRadius();
+            if (radius > 0)
+                return new AxisAlignedBB(pos).grow(radius);
+            System.out.println(radius);
+        }
+        return null;
+    }
+
+    @Override
+    @SideOnly(Side.CLIENT)
+    public int getVisualizationColor(World world, BlockPos pos) {
+        return 0x825ee5;
+    }
 }

src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityImpl.java

@@ -56,6 +56,10 @@ public class TileEntityImpl extends TileEntity {
         }
     }
 
+    public void onRedstonePowerChange(){
+
+    }
+
     @Override
     public final SPacketUpdateTileEntity getUpdatePacket() {
         NBTTagCompound compound = new NBTTagCompound();

src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityPickupStopper.java

@@ -5,4 +5,10 @@ public class TileEntityPickupStopper extends TileEntityImpl {
     public float getRadius() {
         return this.redstonePower / 2F;
     }
+
+    @Override
+    public void onRedstonePowerChange() {
+        if (!this.world.isRemote)
+            this.sendToClients();
+    }
 }

src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntitySpawnLamp.java

@@ -6,4 +6,9 @@ public class TileEntitySpawnLamp extends TileEntityImpl {
         return this.redstonePower * 3;
     }
 
+    @Override
+    public void onRedstonePowerChange() {
+        if (!this.world.isRemote)
+            this.sendToClients();
+    }
 }

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

@@ -1,18 +1,22 @@
 package de.ellpeck.naturesaura.events;
 
 import baubles.api.BaublesApi;
+import de.ellpeck.naturesaura.Helper;
 import de.ellpeck.naturesaura.ModConfig;
 import de.ellpeck.naturesaura.NaturesAura;
 import de.ellpeck.naturesaura.api.NaturesAuraAPI;
 import de.ellpeck.naturesaura.api.aura.chunk.IAuraChunk;
 import de.ellpeck.naturesaura.api.aura.container.IAuraContainer;
 import de.ellpeck.naturesaura.api.aura.type.IAuraType;
+import de.ellpeck.naturesaura.api.render.IVisualizableBlock;
 import de.ellpeck.naturesaura.blocks.tiles.TileEntityNatureAltar;
 import de.ellpeck.naturesaura.blocks.tiles.TileEntityRFConverter;
 import de.ellpeck.naturesaura.compat.Compat;
+import de.ellpeck.naturesaura.items.ItemRangeVisualizer;
 import de.ellpeck.naturesaura.items.ModItems;
 import de.ellpeck.naturesaura.particles.ParticleHandler;
 import de.ellpeck.naturesaura.particles.ParticleMagic;
+import net.minecraft.block.Block;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.Gui;
@@ -22,6 +26,7 @@ import net.minecraft.client.resources.I18n;
 import net.minecraft.item.ItemStack;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.MathHelper;
 import net.minecraft.util.text.TextFormatting;
@@ -102,19 +107,18 @@ public class ClientEvents {
     public void onWorldRender(RenderWorldLastEvent event) {
         Minecraft mc = Minecraft.getMinecraft();
         mc.profiler.func_194340_a(() -> NaturesAura.MOD_ID + ":onWorldRender");
-        if (mc.gameSettings.showDebugInfo && mc.player.capabilities.isCreativeMode && ModConfig.client.debugWorld) {
         GL11.glPushMatrix();
-            GL11.glDisable(GL11.GL_DEPTH_TEST);
         float partial = event.getPartialTicks();
         GL11.glTranslated(
                 -mc.player.prevPosX - (mc.player.posX - mc.player.prevPosX) * partial,
                 -mc.player.prevPosY - (mc.player.posY - mc.player.prevPosY) * partial,
                 -mc.player.prevPosZ - (mc.player.posZ - mc.player.prevPosZ) * partial);
 
+        if (mc.gameSettings.showDebugInfo && mc.player.capabilities.isCreativeMode && ModConfig.client.debugWorld) {
             Map<BlockPos, Integer> spots = new HashMap<>();
-
-            GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS);
             GL11.glPushMatrix();
+            GL11.glDisable(GL11.GL_DEPTH_TEST);
+            GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS);
             GL11.glDisable(GL11.GL_TEXTURE_2D);
             GL11.glEnable(GL11.GL_BLEND);
             GL11.glBegin(GL11.GL_QUADS);
@@ -122,40 +126,11 @@ public class ClientEvents {
                 spots.put(pos, spot);
 
                 GlStateManager.color(spot > 0 ? 0F : 1F, spot > 0 ? 1F : 0F, 0F, 0.35F);
-                int x = pos.getX();
+                Helper.renderWeirdBox(pos.getX(), pos.getY(), pos.getZ(), 1, 1, 1);
-                int y = pos.getY();
-                int z = pos.getZ();
-                GL11.glVertex3d(x, y + 1, z);
-                GL11.glVertex3d(x + 1, y + 1, z);
-                GL11.glVertex3d(x + 1, y, z);
-                GL11.glVertex3d(x, y, z);
-                GL11.glVertex3d(x + 1, y, z + 1);
-                GL11.glVertex3d(x + 1, y, z);
-                GL11.glVertex3d(x + 1, y + 1, z);
-                GL11.glVertex3d(x + 1, y + 1, z + 1);
-                GL11.glVertex3d(x + 1, y + 1, z + 1);
-                GL11.glVertex3d(x, y + 1, z + 1);
-                GL11.glVertex3d(x, y, z + 1);
-                GL11.glVertex3d(x + 1, y, z + 1);
-                GL11.glVertex3d(x, y + 1, z + 1);
-                GL11.glVertex3d(x, y + 1, z);
-                GL11.glVertex3d(x, y, z);
-                GL11.glVertex3d(x, y, z + 1);
-                GL11.glVertex3d(x, y + 1, z);
-                GL11.glVertex3d(x, y + 1, z + 1);
-                GL11.glVertex3d(x + 1, y + 1, z + 1);
-                GL11.glVertex3d(x + 1, y + 1, z);
-                GL11.glVertex3d(x + 1, y, z);
-                GL11.glVertex3d(x + 1, y, z + 1);
-                GL11.glVertex3d(x, y, z + 1);
-                GL11.glVertex3d(x, y, z);
             });
             GL11.glEnd();
-            GL11.glDisable(GL11.GL_TEXTURE_2D);
-            GL11.glPopMatrix();
             GL11.glPopAttrib();
 
-            GL11.glPushMatrix();
             float scale = 0.03F;
             GlStateManager.scale(scale, scale, scale);
             for (Map.Entry<BlockPos, Integer> spot : spots.entrySet()) {
@@ -166,11 +141,43 @@ public class ClientEvents {
                 mc.fontRenderer.drawString(spot.getValue().toString(), 0, 0, 0);
                 GlStateManager.popMatrix();
             }
-            GL11.glPopMatrix();
 
             GL11.glEnable(GL11.GL_DEPTH_TEST);
             GL11.glPopMatrix();
         }
+
+        if (mc.objectMouseOver != null) {
+            if (Helper.isHoldingItem(mc.player, ModItems.RANGE_VISUALIZER)) {
+                GL11.glPushMatrix();
+                GL11.glDisable(GL11.GL_CULL_FACE);
+                GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS);
+                GL11.glDisable(GL11.GL_TEXTURE_2D);
+                GL11.glEnable(GL11.GL_BLEND);
+                GL11.glBegin(GL11.GL_QUADS);
+                for (BlockPos pos : ItemRangeVisualizer.VISUALIZED_POSITIONS) {
+                    if (!mc.world.isBlockLoaded(pos))
+                        continue;
+                    IBlockState state = mc.world.getBlockState(pos);
+                    Block block = state.getBlock();
+                    if (!(block instanceof IVisualizableBlock))
+                        continue;
+                    IVisualizableBlock visualize = (IVisualizableBlock) block;
+                    AxisAlignedBB box = visualize.getVisualizationBounds(mc.world, pos);
+                    if (box == null)
+                        continue;
+                    box = box.grow(0.05F);
+                    int color = visualize.getVisualizationColor(mc.world, pos);
+                    GlStateManager.color(((color >> 16) & 255) / 255F, ((color >> 8) & 255) / 255F, (color & 255) / 255F, 0.5F);
+                    Helper.renderWeirdBox(box.minX, box.minY, box.minZ, box.maxX - box.minX, box.maxY - box.minY, box.maxZ - box.minZ);
+                }
+                GL11.glEnd();
+                GL11.glPopAttrib();
+                GL11.glEnable(GL11.GL_CULL_FACE);
+                GL11.glPopMatrix();
+            }
+        }
+
+        GL11.glPopMatrix();
         mc.profiler.endSection();
     }
 

src/main/java/de/ellpeck/naturesaura/items/ItemRangeVisualizer.java

@@ -0,0 +1,38 @@
+package de.ellpeck.naturesaura.items;
+
+import de.ellpeck.naturesaura.api.render.IVisualizableBlock;
+import net.minecraft.block.Block;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.util.EnumActionResult;
+import net.minecraft.util.EnumFacing;
+import net.minecraft.util.EnumHand;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+
+import java.util.HashSet;
+import java.util.Set;
+
+public class ItemRangeVisualizer extends ItemImpl {
+
+    public static final Set<BlockPos> VISUALIZED_POSITIONS = new HashSet<>();
+
+    public ItemRangeVisualizer() {
+        super("range_visualizer");
+    }
+
+    @Override
+    public EnumActionResult onItemUse(EntityPlayer player, World worldIn, BlockPos pos, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ) {
+        IBlockState state = worldIn.getBlockState(pos);
+        Block block = state.getBlock();
+        if (block instanceof IVisualizableBlock) {
+            if (worldIn.isRemote)
+                if (VISUALIZED_POSITIONS.contains(pos))
+                    VISUALIZED_POSITIONS.remove(pos);
+                else
+                    VISUALIZED_POSITIONS.add(pos);
+            return EnumActionResult.SUCCESS;
+        }
+        return EnumActionResult.PASS;
+    }
+}

src/main/java/de/ellpeck/naturesaura/items/ModItems.java

@@ -44,4 +44,5 @@ public final class ModItems {
     public static final Item EFFECT_POWDER = new ItemEffectPowder();
     public static final Item BIRTH_SPIRIT = new ItemBirthSpirit();
     public static final Item MOVER_MINECART = new ItemMoverMinecart();
+    public static final Item RANGE_VISUALIZER = new ItemRangeVisualizer();
 }

src/main/resources/assets/naturesaura/lang/en_US.lang

@@ -75,6 +75,7 @@ item.naturesaura.effect_powder.naturesaura:plant_boost.name=Powder of Steady Gro
 item.naturesaura.effect_powder.naturesaura:cache_recharge.name=Powder of no Storage
 item.naturesaura.effect_powder.naturesaura:animal.name=Powder of Chastity
 item.naturesaura.mover_cart.name=Aura Attraction Cart
+item.naturesaura.range_visualizer.name=Mystical Magnifier
 
 container.naturesaura.tree_ritual.name=Ritual of the Forest
 container.naturesaura.altar.name=Natural Altar Infusion

src/main/resources/assets/naturesaura/models/item/range_visualizer.json

@@ -0,0 +1,6 @@
+{
+    "parent": "item/generated",
+    "textures": {
+        "layer0": "naturesaura:items/range_visualizer"
+    }
+}

src/main/resources/assets/naturesaura/patchouli_books/book/en_us/entries/items/range_visualizer.json

@@ -0,0 +1,17 @@
+{
+    "name": "Mystical Magnifier",
+    "icon": "naturesaura:range_visualizer",
+    "category": "items",
+    "advancement": "naturesaura:infused_materials",
+    "pages": [
+        {
+            "type": "text",
+            "text": "The $(item)Mystical Magnifier$() is a $(t:is a mod by vazkii)neat$() device for any magical botanist working with machinery. When equipped in either hand, and interacting with a compatible device, its $(thing)range of operation$() will be displayed around it, allowing any contraptions built with it to be inspected easily and precisely. To stop a device from displaying its range, simply interact with it a second time."
+        },
+        {
+            "type": "crafting",
+            "text": "Creating the $(item)Mystical Magnifier$()",
+            "recipe": "naturesaura:range_visualizer"
+        }
+    ]
+}

src/main/resources/assets/naturesaura/recipes/range_visualizer.json

@@ -0,0 +1,25 @@
+{
+    "type": "forge:ore_shaped",
+    "pattern": [
+        "IA ",
+        "AGA",
+        " AS"
+    ],
+    "key": {
+        "A": {
+            "item": "naturesaura:ancient_planks"
+        },
+        "I": {
+            "item": "naturesaura:infused_iron"
+        },
+        "G": {
+            "item": "minecraft:glass"
+        },
+        "S": {
+            "item": "naturesaura:ancient_stick"
+        }
+    },
+    "result": {
+        "item": "naturesaura:range_visualizer"
+    }
+}