Fix double sending of command messages with LINEAR execution

main/src/main/java/net/citizensnpcs/trait/CommandTrait.java

@@ -3,8 +3,10 @@
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.Comparator;
+import java.util.EnumSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 
 import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
@@ -50,6 +52,7 @@ public class CommandTrait extends Trait {
     private final Map<String, PlayerNPCCommand> cooldowns = Maps.newHashMap();
     @Persist
     private double cost = -1;
+    private final Map<String, Set<CommandTraitMessages>> executionErrors = Maps.newHashMap();
     @Persist
     private ExecutionMode executionMode = ExecutionMode.LINEAR;
     @Persist
@@ -165,6 +168,9 @@ public int compare(NPCCommand o1, NPCCommand o2) {
                     });
                     max = commandList.size() > 0 ? commandList.get(commandList.size() - 1).id : -1;
                 }
+                if (executionMode == ExecutionMode.LINEAR) {
+                    executionErrors.put(player.getUniqueId().toString(), EnumSet.noneOf(CommandTraitMessages.class));
+                }
                 for (NPCCommand command : commandList) {
                     if (executionMode == ExecutionMode.SEQUENTIAL) {
                         PlayerNPCCommand info = cooldowns.get(player.getUniqueId().toString());
@@ -244,6 +250,12 @@ public void removeCommandById(int id) {
     }
 
     private void sendErrorMessage(Player player, CommandTraitMessages msg, Object... objects) {
+        Set<CommandTraitMessages> sent = executionErrors.get(player.getUniqueId().toString());
+        if (sent != null) {
+            if (sent.contains(msg))
+                return;
+            sent.add(msg);
+        }
         String messageRaw = msg.setting.asString();
         if (messageRaw != null && messageRaw.trim().length() > 0) {
             Messaging.send(player, Translator.format(messageRaw, objects));

v1_16_R3/src/main/java/net/citizensnpcs/nms/v1_16_R3/util/PlayerBodyControl.java

@@ -0,0 +1,62 @@
+package net.citizensnpcs.nms.v1_16_R3.util;
+
+import net.citizensnpcs.nms.v1_16_R3.entity.EntityHumanNPC;
+import net.minecraft.server.v1_16_R3.EntityInsentient;
+import net.minecraft.server.v1_16_R3.MathHelper;
+
+public class PlayerBodyControl {
+    private final EntityHumanNPC a;
+    private int b;
+    private float c;
+
+    public PlayerBodyControl(EntityHumanNPC var0) {
+        this.a = var0;
+    }
+
+    public void a() {
+        if (f()) {
+            this.a.aA = this.a.yaw;
+            c();
+            this.c = this.a.aC;
+            this.b = 0;
+            return;
+        }
+        if (e())
+            if (Math.abs(this.a.aC - this.c) > 15.0F) {
+                System.out.println("BIG DX");
+                this.b = 0;
+                this.c = this.a.aC;
+                b();
+            } else {
+                this.b++;
+                if (this.b > 10)
+                    d();
+            }
+    }
+
+    private void b() {
+        this.a.aA = MathHelper.b(this.a.aA, this.a.aC, 10);
+        this.a.yaw = this.a.aA;
+    }
+
+    private void c() {
+        this.a.aC = MathHelper.b(this.a.aC, this.a.aA, 10);
+    }
+
+    private void d() {
+        int var0 = this.b - 10;
+        float var1 = MathHelper.a(var0 / 10.0F, 0.0F, 1.0F);
+        float var2 = 40 * (1.0F - var1);
+        this.a.aA = MathHelper.b(this.a.aA, this.a.aC, var2);
+    }
+
+    private boolean e() {
+        return (this.a.getPassengers().isEmpty() || !(this.a.getPassengers().get(0) instanceof EntityInsentient));
+    }
+
+    private boolean f() {
+        double var0 = this.a.locX() - this.a.lastX;
+        double var2 = this.a.locZ() - this.a.lastZ;
+        return (var0 * var0 + var2 * var2 > 2.500000277905201E-7D);
+    }
+}

v1_16_R3/src/main/java/net/citizensnpcs/nms/v1_16_R3/util/PlayerControllerLook.java

@@ -10,13 +10,15 @@ public class PlayerControllerLook {
     private final EntityHumanNPC a;
     protected float b;
     protected float c;
+    private final PlayerBodyControl control;
     protected boolean d;
     protected double e;
     protected double f;
     protected double g;
 
     public PlayerControllerLook(EntityHumanNPC entityinsentient) {
         this.a = entityinsentient;
+        this.control = new PlayerBodyControl(this.a);
     }
 
     public void a() {
@@ -35,7 +37,7 @@ public void a() {
             while (this.a.aC < -180F) {
                 this.a.aC += 360F;
             }
-            double d = this.a.aC - 45;
+            double d = this.a.aC - 40;
             while (d >= 180F) {
                 d -= 360F;
             }
@@ -45,15 +47,17 @@ public void a() {
             if (d > this.a.yaw) {
                 this.a.yaw = (float) d;
             }
-            d = this.a.aC + 45;
-            while (d >= 180F) {
-                d -= 360F;
-            }
-            while (d < -180F) {
-                d += 360F;
-            }
-            if (d < this.a.yaw) {
-                this.a.yaw = (float) d;
+            if (d != this.a.yaw) {
+                d = this.a.aC + 40;
+                while (d >= 180F) {
+                    d -= 360F;
+                }
+                while (d < -180F) {
+                    d += 360F;
+                }
+                if (d < this.a.yaw) {
+                    this.a.yaw = (float) d;
+                }
             }
             // this.a.yaw = this.a(this.a.aC, this.h(), this.b);
         } else {