I am trying to make a GUI that displays fluids inside. I got water to work, but I am not able to get my custom fluid to work.

It says null pointer exception when it tries to get the IIcon from my fluid.

 

Drawing the fluids:

	public void drawFluidTank(IFluidTank tank, int x, int y){
        FluidStack fluid = tank.getFluid();
        TextureManager manager = mc.getTextureManager();
        if (fluid != null){
            manager.bindTexture(manager.getResourceLocation(0)); //Bind the blocks texture map
            float amount = fluid.amount; //The amount of fluid in the tank
            float capacity = tank.getCapacity(); //The max capacity of the tank
            float scale = amount / capacity; // The 'scale' of the fluid, ranging from 0 to 1, with 0 being empty, and 1 being full
            int fluidTankHeight = 60;  // The max height of which the fluid can be drawed, i use 60, so the fluid is drawn max 60 pixels high
            int fluidAmount = (int) (scale * fluidTankHeight); // The amount of pixels the fluid has to be drawn on
            drawFluid(x, y + fluidTankHeight - fluidAmount, fluid.getFluid().getIcon(fluid), 16, fluidAmount); //Actually draw the fluid
        }
    }
    
    private void drawFluid(int x, int y, IIcon icon, int width, int height){
        int i = 0;
        int j = 0;
        
        int drawHeight = 0;
        int drawWidth = 0;
        
        for (i = 0; i < width; i += 16){
            for (j = 0; j < height; j += 16) {
                drawWidth = Math.min(width - i, 16);
                drawHeight = Math.min(height - j, 16);
                System.out.println(icon == null);
                drawTexturedModelRectFromIcon(x + i, y + j, icon, drawWidth, drawHeight);
            }
        }
    }

 

Creating/Registering the fluid:

		Main.filteredWater = new Fluid("filteredWater");
	FluidRegistry.registerFluid(Main.filteredWater);

 

My fluid does work, as in I can place it, pick it up with a bucket, it flows, etc.

Does your Fluid actually have an icon?

And I mean the

Fluid

not the

BlockFluid

.

Wish there was a facepalm emoji, because I am an idiot for assuming that by default it has an icon.

[move]But I mean, I got whatever this is, so that will have to do.[/move]

 

How exactly do I add an icon for a fluid?

 

 

Nevermind, I looked at the buildcraft source (line 408) and found what to do.