hey guys i have a wind turbine that creates power by taking its height but the problem isnt the turbines power the problem is taking the turbines power (a non static float) and adding it to another blocks power (a non static float) every time i try to do this it tells me i need to change the modifier of the block i am giving power to to static

 

turbine tileEntity

 

the connect method is were this happens

package Mine_EE_GUI;

import Mine_EE.Mine_EE;
import Mine_EE_Blocks.TileEntityCable;
import net.minecraft.client.Minecraft;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.network.INetworkManager;
import net.minecraft.network.packet.Packet;
import net.minecraft.network.packet.Packet132TileEntityData;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;
import net.minecraftforge.common.ForgeDirection;

public class TileEntityTurbine extends TileEntity implements IInventory {
public float power;
public float MAX;
public float LOW;
public ForgeDirection[] connect = new ForgeDirection[6];
TileEntityCable C;
public ItemStack[] inventory;
public TileEntityTurbine() {
inventory = new ItemStack[2];
MAX = 100;
LOW = 0;
}



private int item;


@Override
public void updateEntity()
{
	if(worldObj.getHeightValue(xCoord, zCoord) >= 64 && !worldObj.isRemote && this.power < MAX && this.worldObj.canBlockSeeTheSky(this.xCoord, this.yCoord + 1, this.zCoord))
	{
		this.addpower(worldObj.getHeightValue(xCoord, zCoord) - 63);
	}
	else if(worldObj.getHeightValue(xCoord, zCoord) >= 64 && !worldObj.isRemote 
			&& worldObj.isRaining() && this.power < MAX && worldObj.canBlockSeeTheSky(xCoord, yCoord, zCoord) 
				&& this.worldObj.canBlockSeeTheSky(this.xCoord, this.yCoord + 1, this.zCoord))
	{
		this.addpower(worldObj.getHeightValue(xCoord, zCoord) + 4);
	}

	connect();

	if(this.power > MAX){
		power = MAX;
	}
	if(this.power < LOW){
		power = LOW;
	}
}


private void connect() {
	if(this.isCable(xCoord, yCoord-1, zCoord) && this.power > 10 &&  TileEntityCable.power < 10)
	{
		TileEntityCable.power = TileEntityCable.power + 10;
		this.power = power - 10;
	}

}


private boolean isCable(int x, int y, int z) {
	return this.worldObj.getBlockTileEntity(x, y, z) instanceof TileEntityCable;

}


public int GetPowerScaled(int scale) {
	return (int) (this.power * scale / MAX);
}

@Override
public int getSizeInventory() {
return inventory.length;
}

@Override
public ItemStack getStackInSlot(int i) {
return inventory[i];
}


@Override
public ItemStack decrStackSize(int slot, int count) {
ItemStack itemstack = getStackInSlot(slot);


if(itemstack != null) 
{

if(itemstack.stackSize <= count) {
setInventorySlotContents(slot, null);
} else {
itemstack = itemstack.splitStack(count);
onInventoryChanged();
}
}
return itemstack;
}



@Override
public ItemStack getStackInSlotOnClosing(int slot) {
ItemStack itemstack = getStackInSlot(slot);

setInventorySlotContents(slot, null);
return itemstack;
}

@Override
public void setInventorySlotContents(int slot, ItemStack itemstack) {
inventory[slot] = itemstack;

this.recipes(slot, itemstack);

if(itemstack != null && itemstack.stackSize > getInventoryStackLimit()) {
itemstack.stackSize = getInventoryStackLimit();
}
onInventoryChanged();
}


private void recipes(int slot, ItemStack itemstack) 
{		

	inventory[slot] = itemstack;


	ItemStack slot0 = getStackInSlot(0);
	ItemStack slot1 = getStackInSlot(1);

	if(power < MAX){

	if(slot0 != null && slot0.itemID == Item.redstone.itemID && power < MAX)
	{

		removestack(slot,itemstack);
		addpower(2 * slot0.stackSize);
		onInventoryChanged();

	}
	}
}

public void removestack(int slot, ItemStack itemstack) 
{
	setInventorySlotContents(slot, null);
}




public void addpower(int mpw) {

	power = this.power + mpw;
	if(this.power <= 0)
	{
		power = LOW;
	}
	if(this.power >= MAX)
	{
		power = MAX;
	}
}

@Override
public String getInvName() {
return "Again a Test Gui";
}

@Override
public boolean isInvNameLocalized() {
return true;
}

@Override
public int getInventoryStackLimit() {
	return 64;
}

@Override
public boolean isUseableByPlayer(EntityPlayer player) {
	if(player.getDistanceSq(xCoord + 0.5D, yCoord + 0.5D, zCoord + 0.5D) <= 64) {
		this.updateEntity();
		return true;
		} else {
		return false;
		}
}

@Override
public void openChest() 
{
}

@Override
public void closeChest() 
{
}


@Override
public boolean isItemValidForSlot(int i, ItemStack itemstack) {
	return false;
}

public boolean canExtractItem(int s, ItemStack item, int side) {
	if(side == 0 && s == 0 && item.getItemDamage() == 0) {
		return true;
	}
	if(side == 0 && s == 1 && item.getItemDamage() == item.getMaxDamage()) {
		return true;
	}
	return side != 0 || s != 1;
}

@Override
public void writeToNBT(NBTTagCompound compound) {
  super.writeToNBT(compound);
  
  if(this.power > 1000) this.power = 1000;
  compound.setFloat("power", this.power);

  
  NBTTagList list = new NBTTagList();

  for(int i = 0; i < getSizeInventory(); i++) {
    ItemStack itemstack = getStackInSlot(i);

    if(itemstack != null) {
      NBTTagCompound item = new NBTTagCompound();

      item.setByte("SlotDeployer", (byte) i);
      itemstack.writeToNBT(item);
      list.appendTag(item);
    }
  }

  compound.setTag("ItemsDeployer", list);
}

@Override
public void readFromNBT(NBTTagCompound compound) {
  super.readFromNBT(compound);
  if(this.power < 0) this.power = 0;
  this.power = compound.getFloat("power");
  
  NBTTagList list = compound.getTagList("ItemsDeployer");

  for(int i = 0; i < list.tagCount(); i++) {
    NBTTagCompound item = (NBTTagCompound) list.tagAt(i);
    int slot = item.getByte("SlotDeployer");

    if(slot >= 0 && slot < getSizeInventory()) {
      setInventorySlotContents(slot, ItemStack.loadItemStackFromNBT(item));
    }
  }
}

  @Override
    public Packet getDescriptionPacket() {
        Packet132TileEntityData packet = (Packet132TileEntityData) super.getDescriptionPacket();
        NBTTagCompound tag = packet != null ? packet.data : new NBTTagCompound();

        writeToNBT(tag);

        return new Packet132TileEntityData(xCoord, yCoord, zCoord, 1, tag);
    }
  
    @Override
    public void onDataPacket(INetworkManager net, Packet132TileEntityData pkt) {
        super.onDataPacket(net, pkt);
        NBTTagCompound tag = pkt.data;
        readFromNBT(tag);
    }


}

 

CableTileEntity

package Mine_EE_Blocks;

import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.tileentity.TileEntity;
import net.minecraftforge.common.ForgeDirection;
import Mine_EE_GUI.TileEntityElectricTable;
import Mine_EE_GUI.TileEntitySolar;
import Mine_EE_GUI.TileEntityTurbine;

public class TileEntityCable extends TileEntity {

public ForgeDirection[] connect = new ForgeDirection[6];
public float power;
public float MAX = 10;
public float LOW = 0;
public boolean powered = false;
TileEntitySolar solar;
TileEntityTurbine turbine;
TileEntityElectricTable table;
public TileEntityCable()
{

}

public void updateEntity()
{

	if(power > MAX)power= MAX;
	if(power < LOW)power= LOW;
	this.Connect();

}

public void Connect()
{
	if(this.isTurbine(xCoord, yCoord+1, zCoord) && this.power < 10)
	{
		this.power = power + 10;
	}

	if(this.isCable(xCoord, yCoord+1, zCoord)
			|| this.isTable(xCoord, yCoord+1, zCoord) 
			|| this.isTurbine(xCoord, yCoord+1, zCoord)|| this.isSolar(xCoord, yCoord+1, zCoord))
	{

		connect[0] = ForgeDirection.UP;			


	}else	{connect[0] = null;}


	if(this.isCable(xCoord, yCoord-1, zCoord)
			|| this.isTable(xCoord, yCoord-1, zCoord)
			|| this.isTurbine(xCoord, yCoord-1, zCoord)|| this.isSolar(xCoord, yCoord-1, zCoord))
	{


		connect[1] = ForgeDirection.DOWN;


	}else	{connect[1] = null;}


	if(this.isCable(xCoord, yCoord, zCoord-1)
			||this.isTable(xCoord, yCoord, zCoord-1)
			|| this.isTurbine(xCoord, yCoord, zCoord-1)|| this.isSolar(xCoord, yCoord, zCoord-1))
	{
		connect[2] = ForgeDirection.NORTH;


	}else	{connect[2] = null;}


	if(this.isCable(xCoord+1, yCoord, zCoord)
			|| this.isTable(xCoord+1, yCoord, zCoord)
			|| this.isTurbine(xCoord+1, yCoord, zCoord)|| this.isSolar(xCoord+1, yCoord, zCoord))
	{
		connect[3] = ForgeDirection.EAST;


	}else	{connect[3] = null;}
	if(this.isCable(xCoord, yCoord, zCoord+1)
			|| this.isTable(xCoord, yCoord, zCoord+1)
			|| this.isTurbine(xCoord, yCoord, zCoord+1)|| this.isSolar(xCoord, yCoord, zCoord+1))
	{
		connect[4] = ForgeDirection.SOUTH;


	}else	{connect[4] = null;}
	if(this.isCable(xCoord-1, yCoord, zCoord)
			||this.isTable(xCoord-1, yCoord, zCoord)
			||this.isTurbine(xCoord-1, yCoord, zCoord)||this.isSolar(xCoord-1, yCoord, zCoord))
	{

		connect[5] = ForgeDirection.WEST;

	}else	{connect[5] = null;}

}
public boolean isCable(int x, int y, int z)
{
	return this.worldObj.getBlockTileEntity(x, y, z) instanceof TileEntityCable;
}
public boolean isTable(int x, int y, int z)
{

	return this.worldObj.getBlockTileEntity(x, y, z) instanceof TileEntityElectricTable && worldObj.getBlockMetadata(x, y, z) != 0;

}
public boolean isTurbine(int x, int y, int z)
{
	return this.worldObj.getBlockTileEntity(x, y, z) instanceof TileEntityTurbine;
}
public boolean isSolar(int x, int y, int z)
{
	return this.worldObj.getBlockTileEntity(x, y, z) instanceof TileEntitySolar;
}

@Override
public void writeToNBT(NBTTagCompound compound) {
  super.writeToNBT(compound);
  
  if(this.power > 10) this.power = 10;
  compound.setFloat("power", this.power);
  compound.setBoolean("powered", this.powered);

    }


@Override
public void readFromNBT(NBTTagCompound compound) {
  super.readFromNBT(compound);
  if(this.power < 0) this.power = 0;
  this.power = compound.getFloat("power");
  this.powered = compound.getBoolean("powered");


  }
}

 

are you grabbing an instance of the other class? "TileEntity te= getWorldObj().getTileEntity(x,y,z);" then check to see if the gotten one around your windmill is an instance of the cable and cast it to the cable "if (te instanceof CableTileEntity)CableTileEntity cable = (CableTileEntity)te;"

 

then make calls like "cable.power += 5; windmill.power -= 5;"

if (te instanceof CableTileEntity)CableTileEntity cable = (CableTileEntity)te;"

 

It's generally bad to put a variable declaration as the target statement of an if.

This is true, but judging from his code that he posted he understood enough of java for declaring and using variables. And thus I did not need to give him the full code of how to use it, but the methods and idea to do so.