From c9b0f38fcb015f0c1b7e8fb73eb0c71f5ed31b61 Mon Sep 17 00:00:00 2001
From: gsand <gsandowns@gmail.com>
Date: Tue, 5 Aug 2014 17:31:07 -0500
Subject: [PATCH] Inverted Daylight Detector Toggle


diff --git a/src/main/java/net/minecraft/server/BlockDaylightDetector.java b/src/main/java/net/minecraft/server/BlockDaylightDetector.java
index 96e9c37..1298610 100644
--- a/src/main/java/net/minecraft/server/BlockDaylightDetector.java
+++ b/src/main/java/net/minecraft/server/BlockDaylightDetector.java
@@ -38,14 +38,27 @@ public class BlockDaylightDetector extends BlockContainer {
                 f += (6.2831855F - f) * 0.2F;
             }
 
-            i1 = Math.round((float) i1 * MathHelper.cos(f));
-            if (i1 < 0) {
-                i1 = 0;
-            }
-
-            if (i1 > 15) {
-                i1 = 15;
+            // PaperSpigot start - Configurable "inversion" for daylight detectors
+            if (world.paperSpigotConfig.invertedDaylightDetectors) {
+                i1 = Math.round((float) i1 * MathHelper.cos(f) * -1 + 15);
+                if (i1 < 10) {
+                    i1 = 0;
+                }
+
+                if (i1 > 9) {
+                    i1 = 15;
+                }
+            } else {
+                i1 = Math.round((float) i1 * MathHelper.cos(f));
+                if (i1 < 0) {
+                    i1 = 0;
+                }
+
+                if (i1 > 15) {
+                    i1 = 15;
+                }
             }
+            // PaperSpigot end
 
             if (l != i1) {
                 i1 = org.bukkit.craftbukkit.event.CraftEventFactory.callRedstoneChange(world, i, j, k, l, i1).getNewCurrent(); // CraftBukkit - Call BlockRedstoneEvent
diff --git a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
index 0878ea7..9cd9c6d 100644
--- a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
+++ b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
@@ -106,4 +106,11 @@ public class PaperSpigotWorldConfig
         reedMaxHeight = getInt( "max-growth-height.reeds", 3 );
         log( "Max height for cactus growth " + cactusMaxHeight + ". Max height for reed growth " + reedMaxHeight);
     }
+
+    public boolean invertedDaylightDetectors;
+    private void invertedDaylightDetectors()
+    {
+        invertedDaylightDetectors = getBoolean( "inverted-daylight-detectors", false );
+        log( "Inverted Redstone Lamps: " + invertedDaylightDetectors );
+    }
 }
-- 
1.9.1