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Help displaying tooltips to the player's screen


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I have been working on a custom tool. One of it's properties is that it has a temperature. I have this displayed in the item's tooltip, but I would also like to display it to the player's screen for ease of use. I was recommended to look into the RenderTooltipEvent, but I was unable to find anything in the event or it's sub classes that would actually enable me to accomplish this. Am I looking at the wrong event, or am I simply missing something.



Thanks in advance!

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Okay taking a look at that, that's more along the lines of what I need. However, I now have a problem in that I have no way of getting at the item in the player's inventory. What would I need to call in order to accomplish that?

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Okay this is working perfectly. However, I get this cursed image when I run my code:


I've tried calling different drawString variants, but to no avail.

Here is the code I am using:

    public static void renderRailgunTooltip(RenderGameOverlayEvent event) {
        ItemStack gunStackMainHand = Minecraft.getInstance().player.getItemStackFromSlot(EquipmentSlotType.MAINHAND);
        ItemStack gunStackOffHand = Minecraft.getInstance().player.getItemStackFromSlot(EquipmentSlotType.OFFHAND);
        if(gunStackMainHand.getItem() instanceof AbstractRailgun) {
            renderHeatToolTip(event, gunStackMainHand);
        }else if(gunStackOffHand.getItem() instanceof AbstractRailgun) {
            renderHeatToolTip(event, gunStackOffHand);

    private static void renderHeatToolTip(RenderGameOverlayEvent event, ItemStack stack) {
        Minecraft minecraft = Minecraft.getInstance();
        ItemElectric railgun = (ItemElectric)stack.getItem();
        ITextComponent text =
            new StringTextComponent("Temperature: " + railgun.getTemperatureStored(stack) + " C").mergeStyle(TextFormatting.YELLOW);
            minecraft.fontRenderer, text, text.getString().length(),0,0);

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