[1.7.10] [Solved] Tile entity with .obj model follows mouse.

[Guest]

I made a tile entity that renders with a .obj model. Elix helped me get it working but it's acting funny. It follows my mouse. But the I have noticed that the model disappears when I'm not looking at the tile entity. Then if I look at it it appears again.

 

Here is a video (sorry for the lag) depicting the glitch:

 

Here is my renderer's code:

public class LuminaOrbRenderer extends TileEntitySpecialRenderer {
    ResourceLocation texture;
    ResourceLocation objModelLocation;
    IModelCustom model;

    public LuminaOrbRenderer(){
        texture = new ResourceLocation(Lumina.MODID, "models/LuminaOrbTexture.png");
        objModelLocation = new ResourceLocation(Lumina.MODID, "models/LuminaOrb.obj");
        model = AdvancedModelLoader.loadModel(objModelLocation);
    }

    @Override
    public void renderTileEntityAt(TileEntity te, double posX, double posY, double posZ, float timeSinceLastTick) {
        TileEntityLuminaOrb orb = (TileEntityLuminaOrb) te;
        float scale = 0.02F;
        float rotation = orb.rotation + (timeSinceLastTick / 2F);

        bindTexture(texture);

        GL11.glPushMatrix();
        GL11.glScalef(scale, scale, scale);
        GL11.glTranslated(posX + 0.5, posY + 0.5,  posZ + 0.5);
        GL11.glRotatef(rotation, 0F, 1F, 0.5F);
        model.renderAll();
        GL11.glPopMatrix();
    }
}

 

Any help is appreciated at this point. I can't get this to work.

[Ernio]

My GL knowledge is not very good, but for one I can tell - this surely looks like scaling problem. I've had problems like this before and the solution almost always lied in bad scaling.

 

Try moving scaling after translation.

[Draco18s]

I've also had similar problems using only one matrix push/pop.  Add a second one between the translate and the rotate.

[Guest]

Ok, so like this?

GL11.glPushMatrix();
GL11.glTranslated(posX + 0.5, posY + 0.5, posZ + 0.5);
GL11.glScalef(scale, scale, scale);
GL11.glPushMatrix();
GL11.glRotatef(rotation, 0F, 1F, 0.5F);
model.renderAll();
GL11.glPopMatrix();
GL11.glPopMatrix();

 

I moved glScalef below glTranslated. Also, as Draco18s said (if I'm understanding correctly) I added a second push/pop. If I'm not understanding correctly just tell me.

[SanAndreaP]

The second Push/Pop pair doesn't do anything. Read here what Push/PopMatrix actually do: http://www.swiftless.com/tutorials/opengl/pop_and_push_matrices.html

 

And yes, first translate to its position, then scale it or you will scale the position as well.

[Draco18s]

I know what it's supposed to do, but I've seen really odd things when I try to do both a rotation and a translation with only the one pair.

 

There was a forge wiki page on it (can't figure out which one now) that has the comment:

//I don't know why you need another, but you do

Or something along those lines.

 

I don't have a renderer that's going bonkers right now (the one I was having trouble with most recently I ended up rebuilding in techne upside down because it refused to turn around properly).

[Guest]

Ok, I was tinkering around with it, using what you guys said. But now it's doing this. Isn't it cute?

It's probably scaled a little small. What should I change the scale to?

Here is my updated code:

public class LuminaOrbRenderer extends TileEntitySpecialRenderer {
    ResourceLocation texture;
    ResourceLocation objModelLocation;
    IModelCustom model;

    public LuminaOrbRenderer(){
        texture = new ResourceLocation(Lumina.MODID, "models/LuminaOrbTexture.png");
        objModelLocation = new ResourceLocation(Lumina.MODID, "models/LuminaOrb.obj");
        model = AdvancedModelLoader.loadModel(objModelLocation);
    }

    @Override
    public void renderTileEntityAt(TileEntity te, double posX, double posY, double posZ, float timeSinceLastTick) {
        TileEntityLuminaOrb orb = (TileEntityLuminaOrb) te;
        float scale = 0.02F;
        float rotation = orb.rotation + (timeSinceLastTick / 2F);

        bindTexture(texture);

        GL11.glPushMatrix();
        GL11.glTranslated(posX + 0.5, posY + 0.5, posZ + 0.5);
        GL11.glScalef(scale, scale, scale);
        GL11.glPushMatrix();
        GL11.glRotatef(rotation, 0F, 1F, 0.5F);
        model.renderAll();
        GL11.glPopMatrix();
        GL11.glPopMatrix();
    }
}

[Guest]

It's not following the mouse anymore now. Forgot to say that.

[Guest]

Yay! It works now!

Thanks everyone!

[Draco18s]

BTW, to get it to render as a 3D item, you can render it just like in the world: just pass the renderer a dummy entity and render it at (0,0,0).

[Guest]

Ok, where would I put that code to render the item?

[Draco18s]

Implement TileEntityInventoryRenderer in your TESR

[Guest]

It doesn't exist. Is that in 1.8?

[Elix_x]

To make item render in 1.7.10, use  MinecraftForgeClient.registerItemRenderer(item, IItemRenderer);

Where iitem renderer is new class that implements it (Example: LuminaOrbItemRenderer), in constructor you pass it YourTileEntityRenderer (!!!WARNING: SAME OBJECT THAT YOU PASS TO bindTileEntitySpecialRenderer OR MINECRAFT WILL CRASH!!!) and where your return true to first methods, and in last, you just call terenderer.render ...

[Draco18s]

It doesn't exist. Is that in 1.8?

 

Its 1.7.10 and what I'm using.

[Guest]

Ok, this is what I have so far:

public class LuminaOrbItemRenderer implements IItemRenderer {

    @Override
    public boolean handleRenderType(ItemStack item, ItemRenderType type) {
        return false;
    }

    @Override
    public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) {
        return false;
    }

    @Override
    public void renderItem(ItemRenderType type, ItemStack item, Object... data) {

    }
}

What do I do now?

[Elix_x]

Ok, this is what I have so far:

public class LuminaOrbItemRenderer implements IItemRenderer {

    @Override
    public boolean handleRenderType(ItemStack item, ItemRenderType type) {
        return false;
    }

    @Override
    public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) {
        return false;
    }

    @Override
    public void renderItem(ItemRenderType type, ItemStack item, Object... data) {

    }
}

What do I do now?

in constructor you pass it YourTileEntityRenderer (!!!WARNING: SAME OBJECT THAT YOU PASS TO bindTileEntitySpecialRenderer OR MINECRAFT WILL CRASH!!!) and where your return true to first two methods, and in last, you just call terenderer.render ...

 

[Guest]

It doesn't exist. Is that in 1.8?

 

Its 1.7.10 and what I'm using.

 

Oh lol, I thought you said TileEntityItemRenderer. Now I get it. You actually said TileEntityInventoryRenderer.

 

Edit: Well, that doesn't exist either, I think I'll use Elix's way.

[Guest]

So, like this Elix?

public class LuminaOrbItemRenderer implements IItemRenderer {
    LuminaOrbRenderer tesr;


    public  LuminaOrbItemRenderer(LuminaOrbRenderer renderer){
        tesr = renderer;
    }

    @Override
    public boolean handleRenderType(ItemStack item, ItemRenderType type) {
        return true;
    }

    @Override
    public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) {
        return true;
    }

    @Override
    public void renderItem(ItemRenderType type, ItemStack item, Object... data) {
        tesr.renderTileEntityAt(null, 0, 0, 0, 0);
    }
}

[Elix_x]

So, like this Elix?

public class LuminaOrbItemRenderer implements IItemRenderer {
    LuminaOrbRenderer tesr;


    public  LuminaOrbItemRenderer(LuminaOrbRenderer renderer){
        tesr = renderer;
    }

    @Override
    public boolean handleRenderType(ItemStack item, ItemRenderType type) {
        return true;
    }

    @Override
    public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) {
        return true;
    }

    @Override
    public void renderItem(ItemRenderType type, ItemStack item, Object... data) {
        tesr.renderTileEntityAt(null, 0, 0, 0, 0);
    }
}

and where your return true to first 2 methods (optional)

If your tileentity renderer doen't need te data, you can use null, but yours uses some, so in constructor initialise tileentity, and pass it instead of null...

 

[Draco18s]

Whoops, sorry.  It was some of my own helper code, haha.  The one reply was done from my tablet, so I couldn't look at my code.

 

It was an interface I created so that my TEs could be passed to an IItemRenderer, just as you've done and I didn't need a separate IItemRenderer for each TE.  I apologize for the confusion.