Errata

In changeset https://github.com/MinecraftForge/MinecraftForge/commit/53659fca065a600470734d81a168fbdde6ec631a#diff-3168eef80c674ad5e4c39fe89d628362
the event, x, y and z parameters were removed from BreakEvent.


We hit this with the Diamond Ore Trap example.


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Overall for the book a great addition would be "how to look up javadocs" and browse the latest source code.

Note from the Author or Editor:
In Example 3-6 and Example 3-7, replace:

event.world.createExplosion(null, <3>
event.x, event.y, event.z,
10, true);

with:

event.world.createExplosion(null, <3>
event.pos.getX(), event.pos.getY(),
event.pos.getZ(), 10, true);

Both of the commands are missing the method "getName()" that is required by the interface ICommand. On page 69, after the constructor:

public FlamingPigs() {
aliases.add("flamingpigs");
aliases.add("fp");
}

add the following code:

@Override
public String getName() {
return null;
}

On page 77, after the constructor:

public BlockFillCommand() {
aliases.add("fillblocks");
aliases.add("fb");
}

add the following code:

@Override
public String getName() {
return null;
}

The method "onBlockActivated()" and everything in its scope in both of the examples needs to be changed to:

@Override
public boolean onBlockActivated(World world, BlockPos pos, IBlockState state, EntityPlayer player, EnumFacing side, float hitX, float hitY, float hitZ) {
if (!world.isRemote)
return false;
player.addChatMessage(new ChatComponentText(
EnumChatFormatting.DARK_PURPLE
+ "You have clicked on the majestic ENDERIUM BLOCK!!!!!"));
EntityEnderEye eye = new EntityEnderEye(world, pos.getX() + 0.5, pos.getY() + 1.5,
pos.getZ() + 0.5);
eye.motionY = 0.1;
world.spawnEntityInWorld(eye);
return true;
}

Paragraph 2 of bullet 1 of Example 7-3 should say:

It is called when the block is right-clicked. The return type is `boolean`, so it has to return `true` or `false`. There are eight parameters, but we will only be using numbers 1, 2, and 4. Number 1 is the world that the block is in, number 2 is the position of the block, and number 4 is the player who clicked the block.

Note from the Author or Editor:
Page 92:

Replace Example 7-3 with:

@Override <1>
public boolean onBlockActivated(World world, BlockPos pos, IBlockState state, EntityPlayer player, EnumFacing side, float hitX, float hitY, float hitZ) {
if (!world.isRemote) <2>
return false;
player.addChatMessage(new ChatComponentText(
EnumChatFormatting.DARK_PURPLE
+ "You have clicked on the majestic ENDERIUM BLOCK!!!!!")); <3>
EntityEnderEye eye = new EntityEnderEye(world, pos.getX() + 0.5, pos.getY() + 1.5,
pos.getZ() + 0.5); <4>
eye.motionY = 0.1; <5>
world.spawnEntityInWorld(eye); <6>
return true; <7>
}

Paragraph 2 of Callout 1 should be replaced with:

It is called when the block is right-clicked. The return type is `boolean`, so it has to return `true` or `false`. There are eight parameters, but we will only be using numbers 1, 2, and 4. Number 1 is the world that the block is in, number 2 is the position of the block, and number 4 is the player who clicked the block.

Page 93-94:

Replace Example 7-4, last method with:

@Override
public boolean onBlockActivated(World world, BlockPos pos, IBlockState state, EntityPlayer player, EnumFacing side, float hitX, float hitY, float hitZ) {
if (!world.isRemote)
return false;
player.addChatMessage(new ChatComponentText(
EnumChatFormatting.DARK_PURPLE
+ "You have clicked on the majestic ENDERIUM BLOCK!!!!!"));
EntityEnderEye eye = new EntityEnderEye(world, pos.getX() + 0.5, pos.getY() + 1.5,
pos.getZ() + 0.5);
eye.motionY = 0.1;
world.spawnEntityInWorld(eye);
return true;
}

The second parameter in the "registerBlock()" method of "GameRegistry", which currently is "Ender Ingot", should be "enderIngot". Without this change, none of the item textures will work.

Note from the Author or Editor:
Page 98:

Change

GameRegistry.registerItem(enderIngot, "Ender Ingot");

to

GameRegistry.registerItem(enderIngot, "enderIngot");

On all three of the pages, replace anything that says "ingotEnder" with the text "enderIngot" so as to avoid the texture failing. Also, on page 98, replace:

enderIngot = new EnderIngot();
GameRegistry.registerItem(enderIngot, "Ender Ingot");

with:

enderIngot = new EnderIngot();
GameRegistry.registerItem(enderIngot, "enderIngot");

to make sure the en_US.lang file works.