Check if redstone is on?

Hi !

How i can check i the redstone at given coords is powered?
powered restone has a metadata for do that?

 

There are data values for that. In the case of redstone wire, the data ranged from 0x0 to 0xF. You'll probably just want to consider 0x0 off, and anything else on, the range is due to the power drop off as it gets further from the power source. Actual blocks that are powered and unpowered have different states, so I don't think there's 1 single thing to check for. You probably just need to get what item is at the location, and go through a switch/case to determine if it's powered based on the item type.

This should help you to form your cases:
http://www.minecraftwiki.net/wiki/Data_values

 

Thanks! but how i can check that in the code?

because i will permanently check if a sign is powered... :/

 

What about using isPowered() ?

 

thanks!!! i have search a thing like this

hm... another stupid question... in what event i put this? in the BlockEvent the ispwered method not exist...

edit:// solved.. i think

Ok, its not work.
If i power my sign, nothing spawn:

Code:

    @EventHandler (priority = EventPriority.NORMAL)
    public void onPlayerInteract(BlockEvent event){
            EntityType t = null;
            Block Zustand = event.getBlock();
         
            if(Zustand instanceof Sign && Zustand.isBlockPowered()){
             
                final Sign Schild = (Sign)Zustand;
                String line = Schild.getLine(0);
                String linie = Schild.getLine(1);
                if(linie.equalsIgnoreCase("Creeper")){
                    t = EntityType.CREEPER;
                 
                }
                    if(line.equalsIgnoreCase("[Sign Spawn]")){
                     
                        Location loc = Zustand.getLocation();
                        World w = Zustand.getWorld();
                     
                     
                        w.spawnEntity(loc, t);
                    }
                 
                }
            }

"unable to find handler list fpor org. etc . blockevent"

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

First you need to specify the BlockEvent: http://jd.bukkit.org/apidocs/org/bukkit/event/block/BlockEvent.html
Take a look at the subclasses.
And (priority = EventPriority.NORMAL) is not needed because the EventPriority is NORMAL as default. So use EventPriority if you need another priority except of NORMAL.

 

Ok, now i have changed it to a BlockRedstoneEvent, no error, but if i power the sign nothing happens

 

Code:

@EventHandler
    public void onPlayerInteract(BlockRedstoneEvent event){
       
        EntityType t = null;
        Block Zustand = event.getBlock();
           
        if(Zustand.getType() == Material.SIGN_POST && Zustand.isBlockPowered()) {
               
            Sign Schild = (Sign) Zustand.getState();
           
            if (Schild.getLine(1).equalsIgnoreCase("Creeper")){
                t = EntityType.CREEPER;
                if (Schild.getLine(0).equalsIgnoreCase("[Sign Spawn]")) {               
                Location loc = Zustand.getLocation();
                Zustand.getWorld().spawnEntity(loc, t);
                }                           
                }                       
            }           
      }

 

BlockRedstoneEvent will NOT work in this case, since the sign is not a block that normally can be powered, you will need to use BlockPlysicEvent (something like that) and then check if the block is "isBlockPowered()" and "isBlockIndirectlyPowered()" for this to work.

 

It works perfectly my way
And if the Sign is a WallSign, you can easily check this with isWallSign().

 

Maybe signs are also powerable then, cakes were not

 

Here is the function included the possibility to use WallSigns.

Code:

@EventHandler
    public void onPlayerInteract(BlockRedstoneEvent event){
       
        EntityType t = null;
        Block Zustand = event.getBlock();
           
        if(Zustand.getType() == Material.SIGN_POST || Zustand.getType() == Material.WALL_SIGN) {
            if (Zustand.isBlockPowered()) {
                Sign Schild = (Sign) Zustand.getState();
           
            if (Schild.getLine(1).equalsIgnoreCase("Creeper")){
                t = EntityType.CREEPER;
                if (Schild.getLine(0).equalsIgnoreCase("[Sign Spawn]")) {               
                Location loc = Zustand.getLocation();
                Zustand.getWorld().spawnEntity(loc, t);
                }                           
                }                       
            }
            }                       
      }

 

Sounds cool if they have added the redstonevent on all blocks Thanks tr4st

 

If you want to check a Block, you can always check the Block Material instead of.