add a triangulateAuraAround method to the API because I was using that twice without making it nice

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

@@ -13,6 +13,7 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 import net.minecraft.world.chunk.Chunk;
 import net.minecraftforge.items.IItemHandler;
+import org.apache.commons.lang3.mutable.MutableFloat;
 import org.apache.commons.lang3.mutable.MutableInt;
 import org.apache.commons.lang3.mutable.MutableObject;
 import org.lwjgl.util.vector.Vector3f;
@@ -96,6 +97,16 @@ public class InternalHooks implements NaturesAuraAPI.IInternalHooks {
         return result.intValue();
     }
 
+    @Override
+    public int triangulateAuraInArea(World world, BlockPos pos, int radius) {
+        MutableFloat result = new MutableFloat(IAuraChunk.DEFAULT_AURA);
+        IAuraChunk.getSpotsInArea(world, pos, radius, (blockPos, spot) -> {
+            float percentage = 1F - (float) pos.getDistance(blockPos.getX(), blockPos.getY(), blockPos.getZ()) / radius;
+            result.add(spot * percentage);
+        });
+        return result.intValue();
+    }
+
     @Override
     public BlockPos getLowestAuraDrainSpot(World world, BlockPos pos, int radius, BlockPos defaultSpot) {
         MutableInt lowestAmount = new MutableInt(Integer.MAX_VALUE);

src/main/java/de/ellpeck/naturesaura/api/NaturesAuraAPI.java

@@ -232,6 +232,11 @@ public final class NaturesAuraAPI {
          */
         int getAuraInArea(World world, BlockPos pos, int radius);
 
+        /**
+         * @see IAuraChunk#triangulateAuraInArea(World, BlockPos, int)
+         */
+        int triangulateAuraInArea(World world, BlockPos pos, int radius);
+
         /**
          * @see IAuraChunk#getLowestSpot(World, BlockPos, int, BlockPos)
          */

src/main/java/de/ellpeck/naturesaura/api/aura/chunk/IAuraChunk.java

@@ -65,7 +65,8 @@ public interface IAuraChunk extends ICapabilityProvider, INBTSerializable<NBTTag
     /**
      * Convenience method that adds up all of the aura from each drain spot from
      * {@link #getSpotsInArea(World, BlockPos, int, BiConsumer)} and
-     * conveniently returns it.
+     * conveniently returns it. For a better visual display with a more gradual
+     * increase, use {@link #triangulateAuraInArea(World, BlockPos, int)}.
      *
      * @param world  The world
      * @param pos    The center position
@@ -77,6 +78,25 @@ public interface IAuraChunk extends ICapabilityProvider, INBTSerializable<NBTTag
         return NaturesAuraAPI.instance().getAuraInArea(world, pos, radius);
     }
 
+    /**
+     * Convenience method that adds up all of the aura from each drain spot from
+     * {@link #getSpotsInArea(World, BlockPos, int, BiConsumer)}, but multiplies
+     * their amount by the percentual distance to the supplied position. This
+     * will cause for a lot more gradual of an increase and decrease of Aura
+     * when moving closer to actual spots. This should be used for visual
+     * purposes as it is more performance intensive than {@link
+     * #getAuraInArea(World, BlockPos, int)}.
+     *
+     * @param world  The world
+     * @param pos    The center position
+     * @param radius The radius around the center to search for spots in
+     * @return The amount of Aura presetn in that area, based on the drain spots
+     * that are found and their distance to the center
+     */
+    static int triangulateAuraInArea(World world, BlockPos pos, int radius) {
+        return NaturesAuraAPI.instance().triangulateAuraInArea(world, pos, radius);
+    }
+
     /**
      * This method returns the position of the lowest drain spot (meaning the
      * one that has the least Aura stored) in the given area. This should be

src/main/java/de/ellpeck/naturesaura/api/internal/StubHooks.java

@@ -1,6 +1,7 @@
 package de.ellpeck.naturesaura.api.internal;
 
 import de.ellpeck.naturesaura.api.NaturesAuraAPI;
+import de.ellpeck.naturesaura.api.aura.chunk.IAuraChunk;
 import de.ellpeck.naturesaura.api.multiblock.IMultiblock;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.util.ResourceLocation;
@@ -37,7 +38,12 @@ public class StubHooks implements NaturesAuraAPI.IInternalHooks {
 
     @Override
     public int getAuraInArea(World world, BlockPos pos, int radius) {
-        return 0;
+        return IAuraChunk.DEFAULT_AURA;
+    }
+
+    @Override
+    public int triangulateAuraInArea(World world, BlockPos pos, int radius) {
+        return IAuraChunk.DEFAULT_AURA;
     }
 
     @Override

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

@@ -3,7 +3,6 @@ package de.ellpeck.naturesaura.blocks.tiles;
 import de.ellpeck.naturesaura.api.aura.chunk.IAuraChunk;
 import net.minecraft.util.ITickable;
 import net.minecraft.util.math.MathHelper;
-import org.apache.commons.lang3.mutable.MutableFloat;
 
 public class TileEntityAuraDetector extends TileEntityImpl implements ITickable {
 
@@ -12,12 +11,8 @@ public class TileEntityAuraDetector extends TileEntityImpl implements ITickable
     @Override
     public void update() {
         if (!this.world.isRemote && this.world.getTotalWorldTime() % 20 == 0) {
-            MutableFloat totalAmount = new MutableFloat(IAuraChunk.DEFAULT_AURA);
+            int totalAmount = IAuraChunk.triangulateAuraInArea(this.world, this.pos, 25);
-            IAuraChunk.getSpotsInArea(this.world, this.pos, 25, (pos, spot) -> {
+            int power = MathHelper.clamp(MathHelper.ceil(totalAmount / (IAuraChunk.DEFAULT_AURA * 2F) * 15F), 0, 15);
-                float percentage = 1F - (float) this.pos.getDistance(pos.getX(), pos.getY(), pos.getZ()) / 25F;
-                totalAmount.add(spot * percentage);
-            });
-            int power = MathHelper.clamp(MathHelper.ceil(totalAmount.intValue() / (IAuraChunk.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/events/ClientEvents.java

@@ -34,7 +34,6 @@ import net.minecraftforge.fml.common.gameevent.TickEvent.Phase;
 import net.minecraftforge.fml.relauncher.Side;
 import net.minecraftforge.fml.relauncher.SideOnly;
 import net.minecraftforge.items.IItemHandler;
-import org.apache.commons.lang3.mutable.MutableFloat;
 import org.apache.commons.lang3.mutable.MutableInt;
 import org.lwjgl.opengl.GL11;
 
@@ -240,12 +239,8 @@ public class ClientEvents {
                     if (!mc.gameSettings.showDebugInfo) {
                         GlStateManager.color(83 / 255F, 160 / 255F, 8 / 255F);
 
-                        MutableFloat totalAmount = new MutableFloat(IAuraChunk.DEFAULT_AURA);
+                        int totalAmount = IAuraChunk.triangulateAuraInArea(mc.world, mc.player.getPosition(), 35);
-                        IAuraChunk.getSpotsInArea(mc.world, mc.player.getPosition(), 35, (pos, spot) -> {
+                        float totalPercentage = totalAmount / (IAuraChunk.DEFAULT_AURA * 2F);
-                            float percentage = 1F - (float) mc.player.getDistance(pos.getX() + 0.5F, pos.getY() + 0.5F, pos.getZ() + 0.5F) / 35F;
-                            totalAmount.add(spot * percentage);
-                        });
-                        float totalPercentage = totalAmount.intValue() / (IAuraChunk.DEFAULT_AURA * 2F);
 
                         int tHeight = MathHelper.ceil(MathHelper.clamp(totalPercentage, 0F, 1F) * 50);
                         if (tHeight < 50)