/**
 * This handler only checks to see if the event should be cancelled. It does not change the
 * state of any Destroyables.
 */
@EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
public void testBlockChange(BlockTransformEvent event) {
    if(this.match.getWorld() != event.getWorld() || !this.anyDestroyableAffected(event)) {
        return;
    }

    // This is a temp fix until there is a tracker for placed minecarts (only dispensed are tracked right now)
    if((event.getCause() instanceof EntityExplodeEvent &&
       ((EntityExplodeEvent) event.getCause()).getEntity() instanceof ExplosiveMinecart) ||
       event.getCause() instanceof BlockPistonExtendEvent ||
       event.getCause() instanceof BlockPistonRetractEvent) {

        event.setCancelled(true);
        return;
    }

    for(Destroyable destroyable : this.destroyables) {
        String reasonKey = destroyable.testBlockChange(event.getOldState(), event.getNewState(), ParticipantBlockTransformEvent.getPlayerState(event));
        if(reasonKey != null) {
            event.setCancelled(true, new TranslatableComponent(reasonKey));
            return;
        }
    }
}
 

/**
 * This handler only checks to see if the event should be cancelled. It does not change the state
 * of any Destroyables.
 */
@EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
public void testBlockChange(BlockTransformEvent event) {
  if (this.match.getWorld() != event.getWorld() || !this.anyDestroyableAffected(event)) {
    return;
  }

  // This is a temp fix until there is a tracker for placed minecarts (only dispensed are tracked
  // right now)
  if ((event.getCause() instanceof EntityExplodeEvent
          && ((EntityExplodeEvent) event.getCause()).getEntity() instanceof ExplosiveMinecart)
      || event.getCause() instanceof BlockPistonExtendEvent
      || event.getCause() instanceof BlockPistonRetractEvent) {

    event.setCancelled(true);
    return;
  }

  for (Destroyable destroyable : this.destroyables) {
    String reasonKey =
        destroyable.testBlockChange(
            event.getOldState(),
            event.getNewState(),
            ParticipantBlockTransformEvent.getPlayerState(event));
    if (reasonKey != null) {
      event.setCancelled(true, TranslatableComponent.of(reasonKey));
      return;
    }
  }
}
 

@EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
public void breakCheck(final BlockTransformEvent event) {
  if (event.getWorld() != this.match.getWorld()) return;
  ParticipantState player = ParticipantBlockTransformEvent.getPlayerState(event);

  Vector blockVector = BlockVectors.center(event.getNewState()).toVector();

  for (Core core : this.cores) {
    if (!core.hasLeaked() && core.getCasingRegion().contains(blockVector)) {
      if (event.getNewState().getType() == Material.AIR) {
        if (player != null) {
          Competitor team = player.getParty();

          if (team == core.getOwner()) {
            event.setCancelled(true, TranslatableComponent.of("core.damageOwn"));
          } else if (event.getOldState().getData().equals(core.getMaterial())) {
            this.match.callEvent(new CoreBlockBreakEvent(core, player, event.getOldState()));
            core.touch(player);

            // Note: team may not have touched a broken core if a different team broke it
            if (!core.isCompleted(team) && !core.hasTouched(team)) {
              this.match.callEvent(new GoalStatusChangeEvent(this.match, core));
            }
          }
        } else if (event.getCause() instanceof EntityExplodeEvent) {
          // this is a temp fix until there is a tracker for placed minecarts (only dispensed are
          // tracked right now)
          if (((EntityExplodeEvent) event.getCause()).getEntity() instanceof ExplosiveMinecart) {
            event.setCancelled(true);
          }
        } else if (event.getCause() instanceof BlockPistonRetractEvent) {
          event.setCancelled(true);
        }
      } else if (event.getCause() instanceof BlockPistonExtendEvent) {
        event.setCancelled(true);
      } else if (event.getCause() instanceof BlockDispenseEvent) {
        event.setCancelled(true);
      }
      break;
    }
  }
}
 

@EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
public void breakCheck(final BlockTransformEvent event) {
    if(event.getWorld() != this.match.getWorld()) return;
    ParticipantState player = ParticipantBlockTransformEvent.getPlayerState(event);

    Vector blockVector = BlockUtils.center(event.getNewState()).toVector();

    for(Core core : this.cores) {
        if(!core.hasLeaked() && core.getCasingRegion().contains(blockVector)) {
            if(event.getNewState().getType() == Material.AIR) {
                if(player != null) {
                    Competitor team = player.getParty();

                    if(team == core.getOwner()) {
                        event.setCancelled(true, new TranslatableComponent("match.core.damageOwn"));
                    } else if (event.getOldState().getData().equals(core.getMaterial())) {
                        this.match.getPluginManager().callEvent(new CoreBlockBreakEvent(core, player, event.getOldState()));
                        core.touch(player);

                        // Note: team may not have touched a broken core if a different team broke it
                        if(!core.isCompleted(team) && !core.hasTouched(team)) {
                            this.match.getPluginManager().callEvent(new GoalStatusChangeEvent(core));
                        }
                    }
                } else if(event.getCause() instanceof EntityExplodeEvent) {
                    // this is a temp fix until there is a tracker for placed minecarts (only dispensed are tracked right now)
                    if(((EntityExplodeEvent) event.getCause()).getEntity() instanceof ExplosiveMinecart) {
                        event.setCancelled(true);
                    }
                } else if(event.getCause() instanceof BlockPistonRetractEvent) {
                    event.setCancelled(true);
                }
            } else if(event.getCause() instanceof BlockPistonExtendEvent) {
                event.setCancelled(true);
            } else if(event.getCause() instanceof BlockDispenseEvent) {
                event.setCancelled(true);
            }
            break;
        }
    }
}