Area of blocks by 2 vertices/extending

so my plugin i will stand and do the command, I want to get 2 corners each 3 blocks diagonal away from where I'm standing in opposite directions, making a 10x10 square. I think I know how to do this, but I need to get all the blocks and save them without having to save all the xyzs. Is there a way to only save those 2 corner blocks and then calculating out all of the blocks inside?

 

Yes save the values of the corners.
Then run a method that calculates whatever for all the blocks within those parameters.

 

saving would probably just creating an instance variable (or local if you only need it in the same method) and using for-loops to iterate over the contents

 

Hmm.. Seems a bit complicated. Can u show me an example?

 

Code:

Location loc;

in the class body. For iterating, take 2 arbitrary points:

Code:

public void loop(Location p1, Location p2)
{
    int xmin = Math.min(p1.getBlockX(), p2.getBlockX());
    int xmax = Math.max(p1.getBlockX(), p2.getBlockX());
    int ymin = Math.min(p1.getBlockY(), p2.getBlockY());
    int ymax = Math.max(p1.getBlockY(), p2.getBlockY());
    int zmin = Math.min(p1.getBlockZ(), p2.getBlockZ());
    int zmax = Math.max(p1.getBlockZ(), p2.getBlockZ());
    
    World w = p1.getWorld();
 
    for(int x = xmin; x <= xmax; x++)
    {
        for(int y = ymin; y <= ymax; y++)
        {
            for(int z = zmin; z <= zmax; z++)
            {
                Block b = w.getBlockAt(x,y,z);
                // Do stuff
            }
        }
    }
}

 

OOOOH im not good with math can u tell me what they mean?

 

william9518 Math.min() just returns the lowest of both values and Math.max() the highest :3. So basically, I get the min and max of x, y and z. Then I just loop over them.

For instance p1 is (0,0,0) and p2 is (10,10,10).

• First I check which x is the min and max by using Math.min() and Math.max(). This gives that the cuboid starts at x = 0 and goes on till x = 10
• the same with y and z
• the rest is a for-loop (which you should know if you know basic Java). You loop from 0 (the min value) to 10 (the max value)

 

k thx

 

i am making something almost identical to this can you tell me how to do that code and where to do it

 

public void loop(Location p1, Location p2)
{
int xmin = Math.min(p1.getBlockX(), p2.getBlockX());
int xmax = Math.max(p1.getBlockX(), p2.getBlockX());
int ymin = Math.min(p1.getBlockY(), p2.getBlockY());
int ymax = Math.max(p1.getBlockY(), p2.getBlockY());
int zmin = Math.min(p1.getBlockZ(), p2.getBlockZ());
int zmax = Math.max(p1.getBlockZ(), p2.getBlockZ());

World w = p1.getWorld();

for(int x = xmin; x <= xmax; x++)
{
for(int y = ymin; y <= ymax; y++)
{
for(int z = zmin; z <= zmax; z++)
{
Block b = w.getBlockAt(x,y,z);
// Do stuff
}
}
}
}

 

thx i have done this and i get an error here it is help please

[SEVERE] Could not load 'plugins/RealmsMessage.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NullPointerException
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:182)
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305)
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
at org.bukkit.craftbukkit.v1_4_6.CraftServer.loadPlugins(CraftServer.java:239)
at org.bukkit.craftbukkit.v1_4_6.CraftServer.<init>(CraftServer.java:217)
at net.minecraft.server.v1_4_6.PlayerList.<init>(PlayerList.java:52)
at net.minecraft.server.v1_4_6.DedicatedPlayerList.<init>(SourceFile:11)
at net.minecraft.server.v1_4_6.DedicatedServer.init(DedicatedServer.java:104)
at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:399)
at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.NullPointerException
at ca.shaw.mrc1.RealmsMessage.RealmsMessage.<init>(RealmsMessage.java:54)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:178)
... 9 more

 

at line 54 of your code, there is a NullPointerException.

 

will there is no error on that line though

 

There is at runtime.... Whatever you're accessing is null.