Hello,

 

I have a gravity lift block, which repels you upwards from a certain set height, however I am having problems with that height not saving.

 

When the GUI is closed, it calls a method directly in the tile entity class to set the height for which the gravity lift would propel you upwards. It does work, but does not save.

 

I know you must use packets for this, but I have not been able to find a tutorial that teaches what I need - all of the packet tutorials are not for 1.7.2.

 

I have posted a topic on the Forge Forums a while back about the same issue, but that was for MC 1.6, so it is outdated.

 

Any help with ways of solving this would be much appreciated! Plus any links to tutorials that have exactly what I need.

 

Code:

TileEntityGravityLift.java

 

package kris91268.lbd.Tileentity;

import kris91268.lbd.ModLBD;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;

/**
* 
* @author Arbiter
*
*/
public class TileEntityGravityLift extends TileEntity
{
public float height;

public void readFromNBT(NBTTagCompound par1)
{
	super.readFromNBT(par1);
	height = par1.getFloat("Height");
}
public void writeToNBT(NBTTagCompound par1)
{
	super.writeToNBT(par1);
	par1.setFloat("Height", height);
}
public void setHeight(float height)
{
	this.height = height;
	this.markDirty();
	worldObj.markBlockForUpdate(xCoord, yCoord, zCoord);
	worldObj.notifyBlockChange(xCoord, yCoord, zCoord, this.getBlockType());
}
}

 

 

GuiGravityLift.java

 

package kris91268.lbd;

import org.lwjgl.input.Keyboard;
import kris91268.lbd.Packet.PacketUpdateHeight;
import kris91268.lbd.Tileentity.TileEntityGravityLift;
import net.minecraft.client.gui.GuiButton;
import net.minecraft.client.gui.GuiScreen;
import net.minecraft.client.gui.GuiTextField;
import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.network.NetHandlerPlayClient;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.network.play.client.C12PacketUpdateSign;
import net.minecraft.network.play.client.C17PacketCustomPayload;
import net.minecraft.util.ResourceLocation;

/**
* 
* @author Arbiter
*
*/
public class GuiGravityLift extends GuiContainer
{
private static final ResourceLocation texture = new ResourceLocation("lbd:textures/gui/gravLift.png");
public TileEntityGravityLift tileEntity;
private GuiButton doneButton, decByPointZeroOne, decByPointOne, incByPointOne, incByOnePointZero;
private GuiTextField number;
private float liftHeight;

public GuiGravityLift(TileEntityGravityLift tileEntity)
{
	super(new ContainerGravityLift());
	this.tileEntity = tileEntity;
}
@Override
public void drawGuiContainerForegroundLayer(int par1, int par2)
{
	this.fontRendererObj.drawString("Gravity Lift", this.xSize / 2 - 
			this.fontRendererObj.getStringWidth("Gravity Lift") / 2, 6, 4210752);
}
@Override
public void drawGuiContainerBackgroundLayer(float par1, int par2, int par3)
{
	this.mc.getTextureManager().bindTexture(texture);
}
@Override
public void initGui()
{
	this.buttonList.add(this.doneButton = new GuiButton(0, this.width / 2 - 25, this.height / 4 + 35, 50, 20, "Done"));
	this.buttonList.add(this.decByPointZeroOne = new GuiButton(1, this.width / 2 - 75, this.height / 4 + 0, 40, 20, "-0.1"));
	this.buttonList.add(this.decByPointOne = new GuiButton(2, this.width / 2 - 75, this.height / 4 + 25, 40, 20, "-1.0"));
	this.buttonList.add(this.incByPointOne = new GuiButton(3, this.width / 2 + 25, this.height / 4 + 0, 40, 20, "+0.1"));
	this.buttonList.add(this.incByOnePointZero = new GuiButton(4, this.width / 2 + 25, this.height / 4 + 25, 40, 20, "+1.0"));
	this.number = new GuiTextField(this.fontRendererObj, this.width / 2 - 20, this.height / 4 + 1, 40, 20);
	this.number.setVisible(true);
	this.number.setEnabled(true);
	this.number.setText(Float.toString(liftHeight));
}
@Override
public void onGuiClosed()
{
	Keyboard.enableRepeatEvents(false);
	this.tileEntity.setHeight(liftHeight);
}
@Override
protected void actionPerformed(GuiButton button)
{
	switch (button.id)
	{
	case 0:
		this.mc.displayGuiScreen((GuiScreen)null);
		break;
	case 1:
		liftHeight -= 0.1f;
		break;
	case 2:
		liftHeight -= 1.0f;
		break;
	case 3:
		liftHeight += 0.1f;
		break;
	case 4:
		liftHeight += 1.0f;
		break;
	}
}
}
class ContainerGravityLift extends Container
{
@Override
public boolean canInteractWith(EntityPlayer var1) 
{
	return true;
}	
}

 

http://www.minecraftforge.net/forum/index.php?topic=17281.25

 

I think the topic above would be help.

The suggested changes still do not work in the link you provided me, but thank you.

Yes, you will need to send packets.

And yes, there are 1.7 tutorials for packets.

 

Could I please have a link?