added the aura detector

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

@@ -0,0 +1,29 @@
+package de.ellpeck.naturesaura.blocks;
+
+import de.ellpeck.naturesaura.blocks.tiles.TileEntityAuraDetector;
+import net.minecraft.block.material.Material;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+
+public class BlockAuraDetector extends BlockContainerImpl {
+
+    public BlockAuraDetector() {
+        super(Material.ROCK, "aura_detector", TileEntityAuraDetector.class, "aura_detector");
+    }
+
+    @Override
+    public boolean hasComparatorInputOverride(IBlockState state) {
+        return true;
+    }
+
+    @Override
+    public int getComparatorInputOverride(IBlockState blockState, World worldIn, BlockPos pos) {
+        TileEntity tile = worldIn.getTileEntity(pos);
+        if (tile instanceof TileEntityAuraDetector)
+            return ((TileEntityAuraDetector) tile).redstonePower;
+        else
+            return 0;
+    }
+}

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

@@ -19,4 +19,5 @@ public final class ModBlocks {
     public static final Block INFUSED_STONE = new BlockImpl("infused_stone", Material.ROCK).setSoundType(SoundType.STONE).setHardness(1.75F);
     public static final Block FURNACE_HEATER = new BlockFurnaceHeater();
     public static final Block POTION_GENERATOR = new BlockPotionGenerator();
+    public static final Block AURA_DETECTOR = new BlockAuraDetector();
 }

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

@@ -0,0 +1,22 @@
+package de.ellpeck.naturesaura.blocks.tiles;
+
+import de.ellpeck.naturesaura.aura.chunk.AuraChunk;
+import net.minecraft.util.ITickable;
+import net.minecraft.util.math.MathHelper;
+
+public class TileEntityAuraDetector extends TileEntityImpl implements ITickable {
+
+    public int redstonePower;
+
+    @Override
+    public void update() {
+        if (!this.world.isRemote && this.world.getTotalWorldTime() % 80 == 0) {
+            int amount = AuraChunk.getAuraInArea(this.world, this.pos, 8);
+            int power = MathHelper.clamp(MathHelper.ceil(amount / (AuraChunk.DEFAULT_AURA * 2F) * 15F), 0, 15);
+            if (this.redstonePower != power) {
+                this.redstonePower = power;
+                this.world.updateComparatorOutputLevel(this.pos, this.getBlockType());
+            }
+        }
+    }
+}

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

@@ -15,6 +15,7 @@ public final class ModItems {
     public static final Item INFUSED_IRON = new ItemImpl("infused_iron");
     public static final Item ANCIENT_STICK = new ItemImpl("ancient_stick");
     public static final Item COLOR_CHANGER = new ItemColorChanger();
+    public static final Item AURA_CACHE = new ItemAuraCache();
 
     public static final Item.ToolMaterial TOOL_MATERIAL_INFUSED_IRON =
             EnumHelper.addToolMaterial(NaturesAura.MOD_ID.toUpperCase(Locale.ROOT) + "_INFUSED_IRON", 3, 300, 6.25F, 2.25F, 16);
@@ -23,5 +24,4 @@ public final class ModItems {
     public static final Item INFUSED_SHOVEL = new ItemShovelNA("infused_iron_shovel", TOOL_MATERIAL_INFUSED_IRON);
     public static final Item INFUSED_HOE = new ItemHoeNA("infused_iron_hoe", TOOL_MATERIAL_INFUSED_IRON);
     public static final Item INFUSED_SWORD = new ItemSwordNA("infused_iron_sword", TOOL_MATERIAL_INFUSED_IRON);
-    public static final Item AURA_CACHE = new ItemAuraCache();
 }

src/main/resources/assets/naturesaura/blockstates/aura_detector.json

@@ -0,0 +1,14 @@
+{
+    "forge_marker": 1,
+    "defaults": {
+        "model": "minecraft:cube_all",
+        "textures": {
+            "all": "naturesaura:blocks/aura_detector"
+        },
+        "transform": "forge:default-block"
+    },
+    "variants": {
+        "normal": [{}],
+        "inventory": [{}]
+    }
+}

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

@@ -13,6 +13,7 @@ tile.naturesaura.ancient_planks.name=Ancient Planks
 tile.naturesaura.infused_stone.name=Infused Rock
 tile.naturesaura.furnace_heater.name=Extraneous Firestarter
 tile.naturesaura.potion_generator.name=Absorber of Lingering
+tile.naturesaura.aura_detector.name=Aura Detector
 
 item.naturesaura.eye.name=Environmental Eye
 item.naturesaura.gold_fiber.name=Brilliant Fiber

src/main/resources/assets/naturesaura/patchouli_books/book/en_us/entries/using/aura_detector.json

@@ -0,0 +1,17 @@
+{
+    "name": "Aura Detector",
+    "icon": "naturesaura:aura_detector",
+    "category": "using",
+    "advancement": "naturesaura:infused_materials",
+    "pages": [
+        {
+            "type": "text",
+            "text": "When working with $(aura), sometimes it can be beneficial to know about its levels in an area without having to be there to check in person. The $(item)Aura Detector$() gives out a $(thing)redstone$() signal based on the amount of $(aura) in the close vicinity around it, so long as you attach a $(item)Comparator$() to it. For that, its range of display is similar to that of the $(l:items/eye)Environmental Eye$()."
+        },
+        {
+            "type": "crafting",
+            "text": "Creating the $(item)Aura Detector$()",
+            "recipe": "naturesaura:aura_detector"
+        }
+    ]
+}

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

@@ -0,0 +1,22 @@
+{
+    "type": "forge:ore_shaped",
+    "pattern": [
+        "RSR",
+        "SIS",
+        "RSR"
+    ],
+    "key": {
+        "S": {
+            "item": "naturesaura:infused_stone"
+        },
+        "R": {
+            "item": "minecraft:redstone"
+        },
+        "I": {
+            "item": "naturesaura:eye"
+        }
+    },
+    "result": {
+        "item": "naturesaura:aura_detector"
+    }
+}