Simple BlockPlaceEvent with a sign

Hey guys,

im going to complete my first plugin if i can solve this problem.
Introduction: I was trying to create an event, which reacts if a player places a sign with the first line "[Drill]". It don't have to be a WALL_SIGN, just a simple sign. After that the player should receive a message.

Code:

public void onPlayerPlace(BlockPlaceEvent e) {
    Player p = e.getPlayer();
    Block b = e.getBlockPlaced();
    if(b.getType() == Material.SIGN_POST) {
        Sign sign = (Sign)b.getState();
        if(sign.getLine(0).equals("[Drill]")) {
            p.sendMessage(ChatColor.GRAY + "Drill created");
            sign.setLine(1, "Drill aktivated");
        
            Location locSign = sign.getLocation();
        }
    }
}

Problem: If i try to place a sign, i get no message.. At first i thought i forget the EventHandler Annotation, but if i add a random one (LOWEST, [...], MONITOR) i received that exception in the console:

Exception (open) Exception (close)

[23:48:00 ERROR]: Could not pass event BlockPlaceEvent to DespicableMe v1.0
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.jav
a:297) ~[craftbukkit.jar:git-Bukkit-33d5de3]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java
:62) ~[craftbukkit.jar:git-Bukkit-33d5de3]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.ja
va:501) [craftbukkit.jar:git-Bukkit-33d5de3]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.ja
va:486) [craftbukkit.jar:git-Bukkit-33d5de3]
at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callBlockPlaceE
vent(CraftEventFactory.java:124) [craftbukkit.jar:git-Bukkit-33d5de3]
at net.minecraft.server.v1_8_R1.ItemStack.placeItem(ItemStack.java:154) [
craftbukkit.jar:git-Bukkit-33d5de3]
at net.minecraft.server.v1_8_R1.PlayerInteractManager.interact(PlayerInte
ractManager.java:502) [craftbukkit.jar:git-Bukkit-33d5de3]
at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:
693) [craftbukkit.jar:git-Bukkit-33d5de3]
at net.minecraft.server.v1_8_R1.PacketPlayInBlockPlace.a(PacketPlayInBloc
kPlace.java:50) [craftbukkit.jar:git-Bukkit-33d5de3]
at net.minecraft.server.v1_8_R1.PacketPlayInBlockPlace.a(PacketPlayInBloc
kPlace.java:80) [craftbukkit.jar:git-Bukkit-33d5de3]
at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [craf
tbukkit.jar:git-Bukkit-33d5de3]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?
:1.8.0_31]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_31]
at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:65
6) [craftbukkit.jar:git-Bukkit-33d5de3]
at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:28
4) [craftbukkit.jar:git-Bukkit-33d5de3]
at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:60
9) [craftbukkit.jar:git-Bukkit-33d5de3]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:
517) [craftbukkit.jar:git-Bukkit-33d5de3]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_31]
Caused by: java.lang.ClassCastException: org.bukkit.craftbukkit.v1_8_R1.block.Cra
ftBlock cannot be cast to org.bukkit.block.Sign
at me.torfnase.despicableme.DMEventListener.onPlayerPlace(DMEventListener
.java:39) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_
31]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_
31]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.
8.0_31]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_31]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.jav
a:295) ~[craftbukkit.jar:git-Bukkit-33d5de3]
... 17 more

I hope you can help me,
thanks, Torfnase (peatnose)

 

Sign sign = (Sign) b.getState();
Or b.getBlockState();
Forgot which one it was....
@Torfnase

 

Didn't work, i've tried that before

@Aqua

 

@Torfnase That works and fixes your problem.

Anyway, you probably need SignChangeEvent, BlockPlaceEvent will have an empty sign.

 

@Torfnase, @Konato_K

Yeah, he does need to. BlockPlaceEvent will only place the block, and then the sign menu will pop up, when the sign menu is closed the event SignChangeEvent will be called and this is where you can actually do things.

 

That worked, ty guys