Modding:Basic Block

Please read the tutorial Getting Started first, if you haven't done it already. This tutorial should introduce you into the basic of adding a block to the game using JSON files. If you want to add a block with functionality you should check out the tutorial for Advanced Blocks. There is a full list of all properties which can be defined inside the json file here.

A Simple Block

To get started let's create something simple. In our example we will add an ordinary gold block to the game (will be for decorative use only). So let's call this mod MyGoldBlock.

Workspace

First of all I suggested to create a new folder to keep everything nice and clean. Inside this workspace we will create the mod itself and later on put it into a zip file, so we can test it and distribute it to other people.

The Texture

We will use this texture for our block: .

Now we need to put the texture at the right place so we can use it later on. Therefore you have to rename the texture to mygoldtexture.png and put it inside assets/mygoldblock/textures/block/ in your workspace (you have to create those folders first). mygoldblock will be our domain.

The Block File

The next thing we are going to need is a json file which will determine the properties of the block. For now we will keep it simple and will work with simple properties only. If you want to do some more advanced stuff you can take a look at the Block Properties Overview.

Now you need to create a new json file in your editor (we recommend to use an editor with syntax highlighting, such as Notepad++ or Visual Studio).

{
	code: "mygoldblock",
	creativeinventory: { "general": ["*"] },
	blockmaterial: "Stone",
	drawtype: "Cube",
	textures: {
		all: { base: "block/mygoldtexture" }
	},
	resistance: 3.5,
	sounds: {
		"place": "game:block/anvil",
		"walk": "game:walk/stone"
	}
}

Short explanation of each line:

• code: A unique identifier for your block.
• creativeinventory: The creative inventory tabs the block should be shown in (currently only 1 tab available)
• shape: Which model the block should use
• drawtype: Determines the drawing system, e.g. use 'cube' for normal full cubes or 'json' for custom created shapes.
• textures: What textures to apply. For simple blocks you can define one single texture for 'all' faces or define one for every facing ('north', 'east', 'west', 'south', 'up', 'down')
• resistance: How many seconds of real life time it takes to break the block without tools
• sounds: The sounds to be played when placing/breaking or walking on the block. The prefix game has to be added, since our block has the domain mygoldblock. Otherwise it would try to find those sounds inside our domain.

Now save the file in your workspace inside assets/mygoldblock/blocktypes/ and name it mygoldblock.json.

Naming the Block

To give the block a proper name, we need to create another json file and save it with the following path: assets/mygoldblock/lang/en.json

{
	"block-mygoldblock": "Block of Gold"
}

Testing/ Distribution

The last thing we need to do is to create a zip file of the assets folder inside our workspace. Either you use an external program (such as WinRAR or 7Zip) or you right-click the assets folder and hit Send To -> Compressed (zipped) folder. Eventually you can rename the zip file to MyGoldBlockMod.zip. The zip file can be either used for testing purposes or you can send it to other people so they can use it as well.

Furthermore you need to add a modinfo.json file, check out this tutorial.

To install the mod, navigate to the Vintagestory folder and place it inside the mods folder.

MyGoldBlockMod.zip

.

Hint: Use the client command .tfedit if you want to adjust the block position, rotation and scale in Hands, in GUI, when dropped on the ground or in third person mode.

Advanced Properties

Now we do some more advanced stuff with our lovely gold block. We will add random textures, different variants and custom shapes. So let's get started.

Random Textures

So first of all we need some more textures. I have created some variants of the gold block . To keep the name of the textures simple I added a number to each texture name (mygoldtexture.png,mygoldtexture1.png,mygoldtexture2.png,mygoldtexture3.png)

Now we need to add those new textures to the json file.

	textures: {
		all: { 
			base: "block/mygoldtexture",
			alternates: [{base: "block/mygoldtexture1" }, {base: "block/mygoldtexture2" }, {base: "block/mygoldtexture3" }],
		},
	},

Eventually save it and run Vintagestory again. Now you should see a result like this:

Of course you can add more texture if you would like to.

Variants

Gold is the best, but iron is awesome too ... so what shall will do? Let's add another variant of this block, because we all love iron.

You could duplicate the blocktype file and rename silver to gold in all the places, or you can simply add another variant to the existing blocktype.

Variantgroup: Type

So first of all we need some new textures again:

Now we need to change a few things in our json file. We can add all kinds of different groups, but for now we keep it simple. We are adding group called type, with the states gold and iron. You can use any group code you want.

	variantgroups: [
		{ code: "type", states: ["gold", "iron"] }
	],

The next thing we need to do is set textures by type. So we remove our texture property and replace it with a new property texturesbytype, which will allow us to set different textures for each type.

	texturesbytype: {
		"*-gold": {
			all: { 
				base: "block/mygoldtexture",
				alternates: [{base: "block/mygoldtexture1" }, {base: "block/mygoldtexture2" }, {base: "block/mygoldtexture3" }],
			},
		},
		"*-iron": {
			all: { 
				base: "block/myirontexture",
				alternates: [{base: "block/myirontexture1" }, {base: "block/myirontexture2" }, {base: "block/myirontexture3" }],
			},
		}
	},

Every group will be added after each other to the blocks code myblockname-mygroup-mysecondgroup. In our example we can save ourselves writing a few extra letters by using the wild card *.

You can also use a more compact definition. Due to way we named our textures we can use the placeholder {type} to determine the texture name, so instead of handling every case individually we can write it like this:

	textures: {
		all: { 
			base: "block/my{type}texture",
			alternates: [{base: "block/my{type}texture1" }, {base: "block/my{type}texture2" }, {base: "block/my{type}texture3" }],
		},
	},

The full blocktype definition could then look like this:

{
	code: "myshinyblock",
	creativeinventory: { "general": ["*"] },
	variantgroups: [
		{ code: "type", states: ["gold", "iron"] }
	],
	blockmaterial: "Stone",
	drawtype: "cube",
	textures: {
		all: { 
			base: "block/my{type}texture",
			alternates: [{base: "block/my{type}texture1" }, {base: "block/my{type}texture2" }, {base: "block/my{type}texture3" }],
		},
	},
	resistance: 3.5,
	sounds: {
		"place": "game:block/anvil",
		"walk": "game:walk/stone"
	}
}

Variantgroup: Condition

Let's at another group to our block, which will determine the condition of this block. There will be two states good and used. We can add this group by adding another property inside variantgroups[].

	variantgroups: [
		{ code: "type", states: ["gold", "iron"] },
		{ code: "condition", states: ["good", "used"]}
	],

To finish implementing this second group we need to take care of every case. We want the good blocks to only use the base texture and the used blocks to also use their random textures:

	texturesbytype: {
		"*-good": {
			all: { 
				base: "block/my{type}texture",
			},
		},
		"*-used": {
			all: { 
				base: "block/my{type}texture",
				alternates: [{base: "block/my{type}texture1" }, {base: "block/my{type}texture2" }, {base: "block/my{type}texture3" }],
			},
		},
	},

The blocks in a good condition or on the left side, while the used ones are on the right:

Custom Shapes

In order to use a custom shape we need to create one first. The engine only supports the model/shape format that's created by the VS Model Creator.

Once you have created your own shape you need to export it as a json file, create a new folder assets/myshinyblock/shapes/block/ and save the file in there. In our example we will use this model Myshinymodel.json and move it to assets/myshinyblock/shapes/block/myshinymodel.json. Now we need to specify the model inside our block type json file.

Therefore we will change the drawtype from cube to json:

	drawtype: "json",

and the shape to myshinymodel

	shape: { base: "block/myshinymodel" },

Although this would be enough theoretically, we also should determine this block as being non-solid, to prevent graphical glitches.

	sidesolid: {
		all: "false"
	},
	sideopaque: {
		all: "false"
	},

So let's run the game. This is how it should look like:

Variants of Custom Shapes

I created another model for the blocks in good condition (myshinymodel1.json), because they should look more awesome, than the ones in used conditions. Therefore we need to copy the json file to assets/myshinyblock/shapes/block/ as well.

In order to specify the shape by type we need to remove the property shape and replace it with shapebytype:

	shapebytype: {
		"*-good": {
			base: "block/myshinymodel1",
		},
		"*-used": {
			base: "block/myshinymodel",
		},
	},

MyShinyBlockMod

There are a lot of more things you can do with the blocktype and model formats. We recommend you to take a look at the Vintage Story block type files to understand how the system is working, in case something was left unexplained. We hope we could introduce you into the basic of adding blocks the game. Advanced Blocks will teach you how to add more functionality to your block.

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