add events

src/main/java/lol/vera/spigot/event/PreCreatureSpawnEvent.java

@@ -0,0 +1,98 @@
+package lol.vera.spigot.event;
+
+import com.google.common.base.Preconditions;
+import org.bukkit.Location;
+import org.bukkit.entity.EntityType;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.entity.CreatureSpawnEvent;
+
+/**
+ * WARNING: This event only fires for a limited number of cases, and not for every case that CreatureSpawnEvent does.
+ *
+ * You should still listen to CreatureSpawnEvent as a backup, and only use this event as an "enhancement".
+ * The intent of this event is to improve server performance, so limited use cases.
+ *
+ * Currently: NATURAL and SPAWNER based reasons. Please submit a Pull Request for future additions.
+ * Also, Plugins that replace Entity Registrations with their own custom entities might not fire this event.
+ */
+public class PreCreatureSpawnEvent extends Event implements Cancellable {
+    private final Location location;
+    private final EntityType type;
+    private final CreatureSpawnEvent.SpawnReason reason;
+    private boolean shouldAbortSpawn;
+
+    public PreCreatureSpawnEvent(Location location, EntityType type, CreatureSpawnEvent.SpawnReason reason) {
+        this.location = Preconditions.checkNotNull(location, "Location may not be null").clone();
+        this.type = Preconditions.checkNotNull(type, "Type may not be null");
+        this.reason = Preconditions.checkNotNull(reason, "Reason may not be null");
+    }
+
+    /**
+     * @return The location this creature is being spawned at
+     */
+    public Location getSpawnLocation() {
+        return location;
+    }
+
+    /**
+     * @return The type of creature being spawned
+     */
+    public EntityType getType() {
+        return type;
+    }
+
+    /**
+     * @return Reason this creature is spawning (ie, NATURAL vs SPAWNER)
+     */
+    public CreatureSpawnEvent.SpawnReason getReason() {
+        return reason;
+    }
+
+    /**
+     * @return If the spawn process should be aborted vs trying more attempts
+     */
+    public boolean shouldAbortSpawn() {
+        return shouldAbortSpawn;
+    }
+
+    /**
+     * Set this if you are more blanket blocking all types of these spawns, and wish to abort the spawn process from
+     * trying more attempts after this cancellation.
+     *
+     * @param shouldAbortSpawn Set if the spawn process should be aborted vs trying more attempts
+     */
+    public void setShouldAbortSpawn(boolean shouldAbortSpawn) {
+        this.shouldAbortSpawn = shouldAbortSpawn;
+    }
+
+    private static final HandlerList handlers = new HandlerList();
+
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
+    private boolean cancelled = false;
+
+    /**
+     * @return If the spawn of this creature is cancelled or not
+     */
+    @Override
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    /**
+     * Cancelling this event is more effecient than cancelling CreatureSpawnEvent
+     * @param cancel true if you wish to cancel this event, and abort the spawn of this creature
+     */
+    @Override
+    public void setCancelled(boolean cancel) {
+        cancelled = cancel;
+    }
+}

src/main/java/lol/vera/spigot/event/PrePlayerDeathEvent.java

@@ -0,0 +1,33 @@
+package lol.vera.spigot.event;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.player.PlayerEvent;
+
+public class PrePlayerDeathEvent extends PlayerEvent implements Cancellable {
+
+    private static final HandlerList handlers = new HandlerList();
+    private boolean cancelled = false;
+
+    public PrePlayerDeathEvent(Player who) {
+        super(who);
+    }
+
+    public boolean isCancelled() {
+        return this.cancelled;
+    }
+
+    public void setCancelled(boolean cancel) {
+        this.cancelled = cancel;
+    }
+
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
+}