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97 changes: 97 additions & 0 deletions
97
util/src/main/java/tc/oc/pgm/util/listener/TNTMinecartPlacementListener.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| package tc.oc.pgm.util.listener; | ||
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|
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| import org.bukkit.Bukkit; | ||
| import org.bukkit.Location; | ||
| import org.bukkit.Material; | ||
| import org.bukkit.entity.Player; | ||
| import org.bukkit.entity.Vehicle; | ||
| import org.bukkit.entity.minecart.ExplosiveMinecart; | ||
| import org.bukkit.event.Cancellable; | ||
| import org.bukkit.event.Event; | ||
| import org.bukkit.event.EventHandler; | ||
| import org.bukkit.event.EventPriority; | ||
| import org.bukkit.event.Listener; | ||
| import org.bukkit.event.player.PlayerInteractEvent; | ||
| import org.bukkit.event.vehicle.VehicleCreateEvent; | ||
| import org.bukkit.inventory.ItemStack; | ||
| import tc.oc.pgm.util.event.player.PlayerSpawnEntityEvent; | ||
|
|
||
| /** | ||
| * Transforms vehicle creation events along with player interaction events to a synthetic | ||
| * PlayerSpawnEntityEvent. | ||
| * | ||
| * <p>It works based on the fact that PlayerInteractEvent and VehicleCreateEvent are emitted in the | ||
| * same tick. | ||
| * | ||
| * <p>In modern versions of Minecraft, equivalent functionality is natively implemented in Bukkit as | ||
| * EntityPlaceEvent. | ||
| */ | ||
| public class TNTMinecartPlacementListener implements Listener { | ||
| private Player lastPlacer; | ||
| private ItemStack placingStack; | ||
| private Location railLocation; | ||
|
|
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| private static void handleCall(Event pgmEvent, Event bukkitEvent) { | ||
| if (bukkitEvent instanceof Cancellable) { | ||
| ((Cancellable) pgmEvent).setCancelled(((Cancellable) bukkitEvent).isCancelled()); | ||
| Bukkit.getServer().getPluginManager().callEvent(pgmEvent); | ||
| ((Cancellable) bukkitEvent).setCancelled(((Cancellable) pgmEvent).isCancelled()); | ||
| } else { | ||
| Bukkit.getServer().getPluginManager().callEvent(pgmEvent); | ||
| } | ||
| } | ||
|
|
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| @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true) | ||
| public void onInteraction(PlayerInteractEvent event) { | ||
| ItemStack stack = event.getItem(); | ||
| if (stack != null && stack.getType() == Material.EXPLOSIVE_MINECART) { | ||
| lastPlacer = event.getPlayer(); | ||
| placingStack = stack.clone(); | ||
| railLocation = event.getClickedBlock().getLocation(); | ||
| } | ||
| } | ||
|
|
||
| @EventHandler | ||
| public void onVehicleCreate(VehicleCreateEvent event) { | ||
| /* | ||
| * Starting from 1.11.2, VehicleCreateEvent is natively cancellable. | ||
| * Even then, we should account for this case and reset the variables | ||
| * to ensure the tracking works reliably. | ||
| */ | ||
| if (!(event instanceof Cancellable) || !((Cancellable) event).isCancelled()) { | ||
| if (lastPlacer != null) { | ||
| Vehicle vehicle = event.getVehicle(); | ||
| Location vehicleLocation = vehicle.getLocation(); | ||
|
|
||
| if (vehicle instanceof ExplosiveMinecart | ||
| && areBlockLocationsEqual(railLocation, vehicleLocation)) { | ||
| ItemStack itemInHand = lastPlacer.getItemInHand(); | ||
|
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| PlayerSpawnEntityEvent pgmEvent = | ||
| new PlayerSpawnEntityEvent( | ||
| lastPlacer, | ||
| vehicle, | ||
| vehicleLocation, | ||
| itemInHand != null ? itemInHand : placingStack); | ||
| handleCall(pgmEvent, event); | ||
|
|
||
| if (pgmEvent.isCancelled()) { | ||
| if (!(event instanceof Cancellable)) { | ||
| vehicle.remove(); | ||
| } | ||
| lastPlacer.getInventory().setItemInHand(placingStack); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| lastPlacer = null; | ||
| placingStack = null; | ||
| railLocation = null; | ||
| } | ||
|
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| private static boolean areBlockLocationsEqual(Location locA, Location locB) { | ||
| return locA.getBlockX() == locB.getBlockX() | ||
| && locA.getBlockY() == locB.getBlockY() | ||
| && locA.getBlockZ() == locB.getBlockZ(); | ||
| } | ||
| } |