From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Fri, 23 Jun 2023 12:16:28 -0700
Subject: [PATCH] Add Sign#getInteractableSideFor


diff --git a/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
index e34f7426df5d6c94fcc4101b28702e6c1d9fccff..9eea2982e92e9bc7a53962dc6b21de60f9e5a4c7 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
@@ -64,13 +64,18 @@ public class SignBlockEntity extends BlockEntity implements CommandSource { // C
     }
 
     public boolean isFacingFrontText(net.minecraft.world.entity.player.Player player) {
+        // Paper start
+        return this.isFacingFrontText(player.getX(), player.getZ());
+    }
+    public boolean isFacingFrontText(double x, double z) {
+        // Paper end
         Block block = this.getBlockState().getBlock();
 
         if (block instanceof SignBlock) {
             SignBlock blocksign = (SignBlock) block;
             Vec3 vec3d = blocksign.getSignHitboxCenterPosition(this.getBlockState());
-            double d0 = player.getX() - ((double) this.getBlockPos().getX() + vec3d.x);
-            double d1 = player.getZ() - ((double) this.getBlockPos().getZ() + vec3d.z);
+            double d0 = x - ((double) this.getBlockPos().getX() + vec3d.x); // Paper
+            double d1 = z - ((double) this.getBlockPos().getZ() + vec3d.z); // Paper
             float f = blocksign.getYRotationDegrees(this.getBlockState());
             float f1 = (float) (Mth.atan2(d1, d0) * 57.2957763671875D) - 90.0F;
 
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
index fa562d3a9705981524f82b575a3e0760aa40a787..2dcc9b2704a41f7acbdd182512ca05d103ad00cd 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
@@ -158,6 +158,14 @@ public class CraftSign<T extends SignBlockEntity> extends CraftBlockEntityState<
     }
     // Paper end
 
+    // Paper start - side facing API
+    @Override
+    public Side getInteractableSideFor(final double x, final double z) {
+        this.requirePlaced();
+        return this.getSnapshot().isFacingFrontText(x, z) ? Side.FRONT : Side.BACK;
+    }
+    // Paper end
+
     public static Component[] sanitizeLines(String[] lines) {
         Component[] components = new Component[4];