How do I do it?

You probably can't, since entity models rely on raw OpenGL instructions. You can probably render a regular baked model for the simple parts and then render the entity model from a

TESR

. The enchanting table does something like this: the base is a baked model, the book is rendered from the

TESR

.

Crap, one of my friends made an entity model for me using .json, does this mean I just can't use it? It'd really bum him out if I couldn't put it in the game

Oh, you have a JSON model that you want to render as an entity? I thought you had an entity model that you wanted to render as an item/block.

 

It's certainly possible to render baked models as entities, look at

RenderFallingBlock

.

BlockRendererDispatcher blockrendererdispatcher = Minecraft.getMinecraft().getBlockRendererDispatcher();
                    IBakedModel ibakedmodel = blockrendererdispatcher.getModelFromBlockState(iblockstate, world, (BlockPos)null);
                    blockrendererdispatcher.getBlockModelRenderer().renderModel(world, ibakedmodel, iblockstate, blockpos, worldrenderer, false);

 

RenderFallingBlock requires for the model to already be on a block though. Making a new block for each piece of the model is an organization nightmare D:

 

I'm assuming that I can bypass most of the block requirements, but how do I get an IBakedModel from the .json?

Ah, it looks like it's a bit tricky to render a baked model that isn't a

Block

or

Item

(since Minecraft rarely uses baked models for other things).

 

You should be able to subscribe to

ModelBakeEvent

, load the model into an

IModel

using

ModelLoader#getModel

, bake it using

IModel#bake

(look at how this is used in

ModelLoader#setupModelRegistry

) and then add it to the model registry with

IRegistry#putObject

. The

ModelLoader

and model registry are provided as fields of

ModelBakeEvent

.

 

Look at

RenderItemFrame#doRender

to see how you can render an

IBakedModel

that doesn't belong to a

Block

or

Item

.

 

I'm far from an expert in the model/rendering system, so I can't guarantee that this is correct.

Alright, so I got the models loading and rendering, but the problem is the texture is missing.

 

I can apply any texture I want using renderManager.renderEngine.bindTexture(location); but I want it to use the texture described in the .json .

 

Here's the relevant code:

 

Model Baking Code:

IModel cannonBase = event.modelLoader.getModel(RenderCannon.cannonBase);
Function<ResourceLocation, TextureAtlasSprite> textureGetter = new Function<ResourceLocation, TextureAtlasSprite>(){
       public TextureAtlasSprite apply(ResourceLocation location){
              return Minecraft.getMinecraft().getTextureMapBlocks().getAtlasSprite(location.toString());
       }
}
RenderCannon.cannonBaseBaked = cannonBase.bake(cannonBase.getDefaultState(), DefaultVertexFormats.BLOCK, textureGetter);

 

Render Code:

BlockRendererDispatcher blockrendererdispatcher = Minecraft.getMinecraft().getBlockRendererDispatcher();
IBakedModel ibakedmodel = cannonBaseBaked;
renderManager.renderEngine.bindTexture(TextureMap.locationBlocksTexture);
blockrendererdispatcher.getBlockModelRenderer().renderModelBrightnessColor(ibakedmodel, 1.0F, 1.0F, 1.0F, 1.0F);		

 

And the .json model, textures and all of it:

{
    "__comment": "Cannon model - bracket only (for animation)",
    "textures": {
        "particle": "blocks/Rusty shaft",
        "0": "blocks/wood_spruce",
        "1": "blocks/Rusty shaft",
        "2": "blocks/Other metal thing"
    },
    "elements": [
        {
            "name": "Bracket base",
            "from": [ 4.0, 1.0, 4.0 ], 
            "to": [ 12.0, 2.0, 12.0 ], 
            "faces": {
                "north": { "texture": "#0", "uv": [ 0.0, 0.0, 8.0, 1.0 ] },
                "east": { "texture": "#0", "uv": [ 0.0, 0.0, 8.0, 1.0 ] },
                "south": { "texture": "#0", "uv": [ 0.0, 0.0, 8.0, 1.0 ] },
                "west": { "texture": "#0", "uv": [ 0.0, 0.0, 8.0, 1.0 ] },
                "up": { "texture": "#0", "uv": [ 0.0, 0.0, 8.0, 8.0 ] },
                "down": { "texture": "#0", "uv": [ 0.0, 0.0, 8.0, 8.0 ] }
            }
        },
        {
            "name": "Bracket left bottom",
            "from": [ 4.0, 2.0, 4.0 ], 
            "to": [ 5.0, 5.0, 12.0 ], 
            "faces": {
                "north": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 3.0 ] },
                "east": { "texture": "#0", "uv": [ 0.0, 13.0, 8.0, 16.0 ] },
                "south": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 3.0 ] },
                "west": { "texture": "#0", "uv": [ 0.0, 13.0, 8.0, 16.0 ] },
                "up": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 8.0 ] },
                "down": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 8.0 ] }
            }
        },
        {
            "name": "Bracket right bottom",
            "from": [ 11.0, 2.0, 4.0 ], 
            "to": [ 12.0, 5.0, 12.0 ], 
            "faces": {
                "north": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 3.0 ] },
                "east": { "texture": "#0", "uv": [ 0.0, 13.0, 8.0, 16.0 ] },
                "south": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 3.0 ] },
                "west": { "texture": "#0", "uv": [ 0.0, 13.0, 8.0, 16.0 ] },
                "up": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 8.0 ] },
                "down": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 8.0 ] }
            }
        },
        {
            "name": "Bracket left middle",
            "from": [ 4.0, 5.0, 5.0 ], 
            "to": [ 5.0, 7.0, 11.0 ], 
            "faces": {
                "north": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 2.0 ] },
                "east": { "texture": "#0", "uv": [ 0.0, 11.0, 6.0, 13.0 ] },
                "south": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 2.0 ] },
                "west": { "texture": "#0", "uv": [ 0.0, 11.0, 6.0, 13.0 ] },
                "up": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 6.0 ] },
                "down": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 6.0 ] }
            }
        },
        {
            "name": "Bracket right middle",
            "from": [ 11.0, 5.0, 5.0 ], 
            "to": [ 12.0, 7.0, 11.0 ], 
            "faces": {
                "north": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 2.0 ] },
                "east": { "texture": "#0", "uv": [ 0.0, 11.0, 6.0, 13.0 ] },
                "south": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 2.0 ] },
                "west": { "texture": "#0", "uv": [ 0.0, 11.0, 6.0, 13.0 ] },
                "up": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 6.0 ] },
                "down": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 6.0 ] }
            }
        },
        {
            "name": "Bracket left top",
            "from": [ 4.0, 7.0, 6.0 ], 
            "to": [ 5.0, 8.0, 10.0 ], 
            "faces": {
                "north": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 1.0 ] },
                "east": { "texture": "#0", "uv": [ 0.0, 10.0, 4.0, 11.0 ] },
                "south": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 1.0 ] },
                "west": { "texture": "#0", "uv": [ 0.0, 10.0, 4.0, 11.0 ] },
                "up": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 4.0 ] },
                "down": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 4.0 ] }
            }
        },
        {
            "name": "Bracket right top",
            "from": [ 11.0, 7.0, 6.0 ], 
            "to": [ 12.0, 8.0, 10.0 ], 
            "faces": {
                "north": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 1.0 ] },
                "east": { "texture": "#0", "uv": [ 0.0, 0.0, 4.0, 1.0 ] },
                "south": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 1.0 ] },
                "west": { "texture": "#0", "uv": [ 0.0, 0.0, 4.0, 1.0 ] },
                "up": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 4.0 ] },
                "down": { "texture": "#0", "uv": [ 0.0, 0.0, 1.0, 4.0 ] }
            }
        }
    ]
}

Do you have missing texture errors in the log? Your model's texture paths don't have a resource prefix, so it's trying to load them from the

minecraft

domain.