SPIGOT-1571: Add Entity Glide Events.

nms-patches/EntityPlayer.patch

@@ -422,23 +422,24 @@
          this.playerConnection.sendPacket(new PacketPlayOutCloseWindow(this.activeContainer.windowId));
          this.s();
      }
-@@ -741,7 +916,16 @@
+@@ -741,8 +916,17 @@
  
      public void triggerHealthUpdate() {
          this.lastHealthSent = -1.0E8F;
 +        this.lastSentExp = -1; // CraftBukkit - Added to reset
-+    }
-+
+     }
+ 
 +    // CraftBukkit start - Support multi-line messages
 +    public void sendMessage(IChatBaseComponent[] ichatbasecomponent) {
 +        for (IChatBaseComponent component : ichatbasecomponent) {
 +            this.sendMessage(component);
 +        }
-     }
++    }
 +    // CraftBukkit end
- 
++
      public void b(IChatBaseComponent ichatbasecomponent) {
          this.playerConnection.sendPacket(new PacketPlayOutChat(ichatbasecomponent));
+     }
 @@ -802,6 +986,8 @@
      }
  
@@ -486,10 +487,24 @@
      }
  
      public void a(EnumHand enumhand) {
-@@ -962,4 +1156,127 @@
-         this.setFlag(7, true);
-         this.setFlag(7, false);
+@@ -955,11 +1149,139 @@
      }
+ 
+     public void M() {
++        if (!CraftEventFactory.callToggleGlideEvent(this, true).isCancelled()) // CraftBukkit
+         this.setFlag(7, true);
+     }
+ 
+     public void N() {
+-        this.setFlag(7, true);
+-        this.setFlag(7, false);
++        // CraftBukkit start
++        if (!CraftEventFactory.callToggleGlideEvent(this, false).isCancelled()) {
++            this.setFlag(7, true);
++            this.setFlag(7, false);
++        }
++        // CraftBukkit end
++    }
 +
 +    // CraftBukkit start - Add per-player time and weather.
 +    public long timeOffset = 0;
@@ -611,6 +626,6 @@
 +    @Override
 +    public CraftPlayer getBukkitEntity() {
 +        return (CraftPlayer) super.getBukkitEntity();
-+    }
+     }
 +    // CraftBukkit end
  }