Events/BlockEvent - Revision history

EERussianguy at 18:46, 20 April 2021

2021-04-20T18:46:14Z

EERussianguy: /* CropGrowEvent */

2021-04-20T18:20:37Z

CropGrowEvent

EERussianguy: more runtime issues

2021-04-20T18:05:35Z

more runtime issues

EERussianguy: some fixes

2021-04-20T17:49:47Z

some fixes

EERussianguy: /* NeighborNotifyEvent */

2021-04-20T17:08:54Z

NeighborNotifyEvent

EERussianguy: /* CreateFluidSourceEvent */

2021-04-20T17:06:22Z

CreateFluidSourceEvent

EERussianguy: params

2021-04-20T17:05:56Z

params

EERussianguy at 14:07, 20 April 2021

2021-04-20T14:07:05Z

EERussianguy: no tag check

2021-04-20T13:32:04Z

no tag check

EERussianguy: add client checks

2021-04-20T13:31:14Z

add client checks

← Older revision		Revision as of 18:46, 20 April 2021
Line 214:		Line 214:

	This is mostly used for preventing portal spawning in certain dimensions (even the overworld).		This is mostly used for preventing portal spawning in certain dimensions (even the overworld).
		+
		+	Example usage:
		+	<syntaxhighlight lang="java">
		+	public void onPortalLight(final BlockEvent.PortalSpawnEvent event)
		+	{
		+	event.setCanceled(true);
		+	}
		+	</syntaxhighlight>

	== BlockToolInteractEvent ==		== BlockToolInteractEvent ==

@@ Line 166: / Line 166: @@
+             {
                  event.setResult(Event.Result.DENY); // make bamboo grow less often
+             }
+         }

@@ Line 128: / Line 128: @@
 public void onFluidPlace(final BlockEvent.FluidPlaceBlockEvent event)
+     {
          if (world.isClientSide()) return;
          BlockState newState = event.getNewState();
-         if (newState.is(Blocks.FIRE))
+         if (newState.is(Blocks.COBBLESTONE) && world.dayTime() > 14000L)
+         {
              event.setNewState(Blocks.ANDESITE.defaultBlockState()); // change the block if done during nighttime.
@@ Line 157: / Line 154: @@
 public void onCropGrowPre(final BlockEvent.CropGrowEvent.Pre event)
+     {
          if (world.isClientSide()) return;
          BlockState state = event.getState();
@@ Line 165: / Line 163: @@
          else if (state.is(Blocks.BAMBOO))
+         {
-             if (event.getWorld().getRandom().nextFloat() > 0.2F) // take a 4/5 chance
+             if (world.getRandom().nextFloat() > 0.2F) // take a 4/5 chance
+             {
                  event.setResult(Event.Result.DENY); // make bamboo grow less often
@@ Line 189: / Line 187: @@
 public void onTrample(final BlockEvent.FarmlandTrampleEvent event)
+     {
          if (!world.isClientSide() && event.getFallDistance() < 10.0F)
+         {
@@ Line 208: / Line 207: @@
 <code>setFinalState()</code>: Set what you want the result to be.
-<code>getFinalState()</code>: Returns what it will be changed to.
+<code>getFinalState()</code>: Returns what it will be changed to. This will normally just return whatever the original block is unless you or another modder has set it. It can't check, for example, if something *will* turn into farmland in the future.
 Example usage:
@@ Line 214: / Line 213: @@
 public void onToolInteract(final BlockEvent.BlockToolInteractEvent event)
+     {
-         if (!world.isClientSide() && event.getFinalState().is(Blocks.FARMLAND) && event.getHeldItemStack().getItem() == Items.NETHERITE_HOE)
+        IWorld world = event.getWorld();
+         {
-             event.setFinalState(Blocks.NETHERRACK.defaultBlockState()); // change the final state under certain conditions
+             event.setFinalState(Blocks.NETHERRACK.defaultBlockState()); // set the block to netherrack
+         }
+     }

@@ Line 14: / Line 14: @@
 public void onBlockBreak(final BlockEvent.BreakEvent event)
+     {
          if (!world.isClientSide() && event.getState().is(Blocks.SAND)) // use the base event to get the state and see what it is
+         {
              event.setExpToDrop(10); // change the amount of experience we'll be dropping
              PlayerEntity player = event.getPlayer();
-             if (player.getUseItem().getItem().is(Items.SHEARS)) // check if the player is holding shears
+             if (player.getMainHandItem().getItem().equals(Items.DIAMOND_SHOVEL)) // check what we're holding
+             {
-                 ItemHandlerHelper.giveItemToPlayer(player, new ItemStack(Items.BONE)); // give a bone to the player!
+                 ItemHandlerHelper.giveItemToPlayer(player, new ItemStack(Items.BONE)); // give a bone
+             }
+         }
@@ Line 46: / Line 47: @@
 public void onEntityPlace(final BlockEvent.EntityPlaceEvent event)
+     {
-         Entity entity = event.getEntity();
+         IWorld world = event.getWorld();
-         if (!world.isClientSide() && entity != null) // check if the entity is null
+         if (!world.isClientSide() && event.getEntity() instanceof EndermanEntity)
+         {
-             Block block = event.getState().getBlock(); // get the block that was placed
+             event.setCanceled(true); // prevent enderman placement
+         }
+     }
@@ Line 81: / Line 77: @@
 public void onNeighborNotify(final BlockEvent.NeighborNotifyEvent event)
+     {
-         if (!world.isClientSide()) return;
+        IWorld world = event.getWorld();
          BlockPos eventPos = event.getPos();
-         for (Direction direction : event.getNotifiedSides()) // cycle through notified directions
+         if (event.getState().is(Blocks.REDSTONE_WIRE)) // only do it for redstone
+         {
-             BlockPos pos = eventPos.relative(direction); // move to the direction given
+             for (Direction direction : event.getNotifiedSides()) // cycle through notified directions
-             double x = pos.getX() + 0.5D; // move to center of the block
-            double y = pos.getY() + 0.5D;
+                BlockPos pos = eventPos.relative(direction); // move to that spot
-            double z = pos.getZ() + 0.5D;
+                if (world.isEmptyBlock(pos))
-            // add particle
-            event.getWorld().addParticle(ParticleTypes.CLOUD, x, y, z, 0.0D, 0.0D, 0.0D);
+                    world.setBlock(pos, Blocks.GLOWSTONE.defaultBlockState(), 3); // place glowstone
+         }
+     }
@@ Line 106: / Line 105: @@
 public void onFluidSourceCreate(final BlockEvent.CreateFluidSourceEvent event)
+     {
          if (!world.isClientSide() && event.getPos().getY() > 100)
+         {

@@ Line 81: / Line 81: @@
 public void onNeighborNotify(final BlockEvent.NeighborNotifyEvent event)
+     {
-         if (world.isClientSide()) return;
+         if (!world.isClientSide()) return;
          BlockPos eventPos = event.getPos();
          for (Direction direction : event.getNotifiedSides()) // cycle through notified directions

@@ Line 99: / Line 99: @@
 * Making a block update detector block
-== CreateFluidSourceEvent ==
+==CreateFluidSourceEvent==
 This event controls creation of fluid sources. This is different than cancellable events, because it has a <code>Result</code>. Setting it to <code>ALLOW</code> causes a source block to created, even if that's not normally what would happen. Setting it to <code>DENY</code> always prevents source creation.
 Example usage:
 <syntaxhighlight lang="java">
-public void onNeighborNotify(final BlockEvent.CreateFluidSourceEvent event)
+public void onFluidSourceCreate(final BlockEvent.CreateFluidSourceEvent event)
+     {
          if (!world.isClientSide() && event.getPos().getY() > 100)