[1.8] Custom Bounding Box

[Reygok]

I created a block that is made up of up to 8 little blocks, so you can build a slab, a stair, or anything else possible with this configuration. Now, my problem is, the bounding box of the block has to be exactly the shape of the texture. How can I make a bounding box that's not a cuboid?

[Reygok]

Yeah I have the collisionBoxes, the wireframe is the issue.

I googled around quite a bit now, but as I'm delving deeper into forge, there are less and less examples to learn from.. I really can't figure out how exactly to draw a wireframe

[Reygok]

	
        @SubscribeEvent
public void drawSelectionBox(DrawBlockHighlightEvent e)
{
	World world = e.player.worldObj;
	EntityPlayer player = e.player;
	float partialTicks = e.partialTicks;
	if(world.getTileEntity(e.target.getBlockPos()) instanceof TileEntityTinyDirt)
	{
		GlStateManager.enableBlend();
		GlStateManager.tryBlendFuncSeparate(770, 771, 1, 0);
		GlStateManager.color(0.0F, 0.0F, 0.0F, 0.4F);
		GL11.glLineWidth(2.0F);
		GlStateManager.disableTexture2D();
		GlStateManager.depthMask(false);
		BlockPos blockpos = e.target.getBlockPos();
		Block block = world.getBlockState(blockpos).getBlock();

		if (block.getMaterial() != Material.air && world.getWorldBorder().contains(blockpos))
		{
			double d0 = player.lastTickPosX + (player.posX - player.lastTickPosX) * (double)partialTicks;
			double d1 = player.lastTickPosY + (player.posY - player.lastTickPosY) * (double)partialTicks;
			double d2 = player.lastTickPosZ + (player.posZ - player.lastTickPosZ) * (double)partialTicks;
			AxisAlignedBB box = 
					new AxisAlignedBB(0.0, 0.0, 0.0, 0.0, 0.0, 0.0)
					//.expand(0.0020000000949949026D, 0.0020000000949949026D, 0.0020000000949949026D)
					//.offset(-d0, -d1, -d2);

			Tessellator tessellator = Tessellator.getInstance();
			WorldRenderer worldrenderer = tessellator.getWorldRenderer();
			worldrenderer.startDrawing(3);

			//worldrenderer.addVertex(box.minX, box.minY, box.minZ);
			//worldrenderer.addVertex(box.minX+0.5, box.minY, box.minZ);
			//worldrenderer.addVertex(box.minX, box.minY, box.minZ);
			//worldrenderer.addVertex(box.minX, box.minY, box.minZ);
			tessellator.draw();
		}

		GlStateManager.depthMask(true);
		GlStateManager.enableTexture2D();
		GlStateManager.disableBlend();
	}
}

 

I can't seem to change the bounding box of my block. I'm not sure what the 3 parameters for addVertex do, the info I find online is inconsistent.

And shouldn't the box be "not there" with this code? Since the AxisAlignedBB I start with is empty.

[Reygok]

I completely forgot about that sorry

Now the default box is gone, but I still have no idea how to "addVertex"es correctly. I played around with the values, but no box appears.

[Reygok]

Oh yeah, just found it out, I thought I had to run drawSelectionBox myself. Well, now it slowly starts to work as intended. Small problem: The correct boxes are only drawn as long as I look at the last part of the texture that's loaded, when I look at another "part" of my block, I look through. I know why, but I don't know how to fix it.

 

The problem is that I'm using setBlockBounds often, for setting the collision box for every tiny block, and also for setting the wireframe now.

I tried without using setBlockBounds, but then I don't get any collisions anymore...

 

I have this inside the Block class:

 

@Override
public AxisAlignedBB getCollisionBoundingBox(World worldIn, BlockPos pos, IBlockState state)
{
	return new AxisAlignedBB(0.0, 0.0, 0.0, 1.0, 1.0, 1.0);
}

@Override
public void addCollisionBoxesToList(World worldIn, BlockPos pos, IBlockState state, AxisAlignedBB mask, List list, Entity collidingEntity)
    {
	TileEntityTinyDirt tileEntity = (TileEntityTinyDirt) worldIn.getTileEntity(pos);
	boolean bot_nw = tileEntity.isBot_nw();
	boolean bot_ne = tileEntity.isBot_ne();
	boolean bot_se = tileEntity.isBot_se();
	boolean bot_sw = tileEntity.isBot_sw();
	boolean top_nw = tileEntity.isTop_nw();
	boolean top_ne = tileEntity.isTop_ne();
	boolean top_se = tileEntity.isTop_se();
	boolean top_sw = tileEntity.isTop_sw();

	if(bot_nw)
	{
		AxisAlignedBB box = new AxisAlignedBB(0.0, 0.0, 0.0, 0.5, 0.5, 0.5);
		addCollisionBox(box, list, mask);
	}
	if(bot_ne)
	{
		AxisAlignedBB box = new AxisAlignedBB(0.5F, 0.0F, 0.0F, 1.0F, 0.5F, 0.5F);
		addCollisionBox(box, list, mask);
	}
	if(bot_se)
	{
		AxisAlignedBB box = new AxisAlignedBB(0.5F, 0.0F, 0.5F, 1.0F, 0.5F, 1.0F);
		addCollisionBox(box, list, mask);
	}
	if(bot_sw)
	{
		AxisAlignedBB box = new AxisAlignedBB(0.0F, 0.0F, 0.5F, 0.5F, 0.5F, 1.0F);
		addCollisionBox(box, list, mask);
	}

	if(top_nw)
	{
		AxisAlignedBB box = new AxisAlignedBB(0.0F, 0.5F, 0.0F, 0.5F, 1.0F, 0.5F);
		addCollisionBox(box, list, mask);
	}
	if(top_ne)
	{
		AxisAlignedBB box = new AxisAlignedBB(0.5F, 0.5F, 0.0F, 1.0F, 1.0F, 0.5F);
		addCollisionBox(box, list, mask);
	}
	if(top_se)
	{
		AxisAlignedBB box = new AxisAlignedBB(0.5F, 0.5F, 0.5F, 1.0F, 1.0F, 1.0F);
		addCollisionBox(box, list, mask);
	}
	if(top_sw)
	{
		AxisAlignedBB box = new AxisAlignedBB(0.0F, 0.5F, 0.5F, 0.5F, 1.0F, 1.0F);
		addCollisionBox(box, list, mask);
	}
    }

public void addCollisionBox(AxisAlignedBB box, List list, AxisAlignedBB mask)
{
        if (box != null && mask.intersectsWith(box))
        {
            list.add(box);
        }
}

 

And this as the Event:

 

@SubscribeEvent
public void drawSelectionBox(DrawBlockHighlightEvent e)
{
	///*
	if(e.target.typeOfHit == MovingObjectPosition.MovingObjectType.BLOCK)
	{
		BlockPos blockpos = e.target.getBlockPos();
		World world = e.player.worldObj;
		TileEntity tileEntity = world.getTileEntity(blockpos);

		if(tileEntity instanceof TileEntityTinyDirt)
		{
			TileEntityTinyDirt tileEntityTinyDirt = (TileEntityTinyDirt) tileEntity; 
			TinyDirt block = (TinyDirt) world.getBlockState(blockpos).getBlock();

			if(tileEntityTinyDirt.isBot_nw())
			{
				block.setBlockBounds(0.0F, 0.0F, 0.0F, 0.5F, 0.5F, 0.5F);
				e.context.drawSelectionBox(e.player, e.target, 0, e.partialTicks);
			}
			if(tileEntityTinyDirt.isBot_ne())
			{
				block.setBlockBounds(0.5F, 0.0F, 0.0F, 1.0F, 0.5F, 0.5F);
				e.context.drawSelectionBox(e.player, e.target, 0, e.partialTicks);
			}
			if(tileEntityTinyDirt.isBot_se())
			{
				block.setBlockBounds(0.5F, 0.0F, 0.5F, 1.0F, 0.5F, 1.0F);
				e.context.drawSelectionBox(e.player, e.target, 0, e.partialTicks);
			}
			if(tileEntityTinyDirt.isBot_sw())
			{
				block.setBlockBounds(0.0F, 0.0F, 0.5F, 0.5F, 0.5F, 1.0F);
				e.context.drawSelectionBox(e.player, e.target, 0, e.partialTicks);
			}
			if(tileEntityTinyDirt.isTop_nw())
			{
				block.setBlockBounds(0.0F, 0.5F, 0.0F, 0.5F, 1.0F, 0.5F);
				e.context.drawSelectionBox(e.player, e.target, 0, e.partialTicks);
			}
			if(tileEntityTinyDirt.isTop_ne())
			{
				block.setBlockBounds(0.5F, 0.5F, 0.0F, 1.0F, 1.0F, 0.5F);
				e.context.drawSelectionBox(e.player, e.target, 0, e.partialTicks);
			}
			if(tileEntityTinyDirt.isTop_se())
			{
				block.setBlockBounds(0.5F, 0.5F, 0.5F, 1.0F, 1.0F, 1.0F);
				e.context.drawSelectionBox(e.player, e.target, 0, e.partialTicks);
			}
			if(tileEntityTinyDirt.isTop_sw())
			{
				block.setBlockBounds(0.0F, 0.5F, 0.5F, 0.5F, 1.0F, 1.0F);
				e.context.drawSelectionBox(e.player, e.target, 0, e.partialTicks);
			}
			e.setCanceled(true);

		}

		//*/
	}
}

 

[Reygok]

Hm yeah, now the wireframe shows correctly; however, it is completely useless now. I thought the wireframe determined where exactly you could click, but that's the bounding box. Now this bounding box is always a full cube, so I can't place several blocks "inside it" anymore. Or, well I can, if I modify the "pos = pos.offset(side);" condition, but I'll often get the wrong hitY value.

 

So there is no way of actually setting to real blockBounds to a complex shape?