[1.12] Custom book, mouse cursor not visible upon opening

[Lyeoj]

Alright, so I want to make a custom book item to serve as a manual for my mod. So I looked up a tutorial and got a simple book functioning simply by copying most of the code. Despite being for an older version of Minecraft, I only had to make a few small changes to get the code to work for 1.12. However, there is one minor problem that is bugging me quite a bit. When I open the book, the mouse cursor can be moved around but isn't visible. This can be fixed by moving the cursor outside the window and then back in, but it's still quite annoying. 

For reference, the tutorial I copied can be found here: http://jabelarminecraft.blogspot.com/p/minecraft-modding-block-with-simple-gui.html

The only changes I really made were the paths to the textures, and a few variable names were changed to work with 1.12. I also cross-referenced the vanilla GuiScreenBook class and my book seems to be consistent with it.  Also, the tutorial is for drawing the book Gui when right clicking on a block, but I just changed that to the onRightClick method of my book item.

[Silly511]

Please post your code.

[Lyeoj]

Sure thing, here's the book GUI, mostly copied:

  Reveal hidden contents

package lyeoj.apexmobs.gui;

import org.lwjgl.input.Keyboard;
import org.lwjgl.input.Mouse;
import org.lwjgl.opengl.GL11;

import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiButton;
import net.minecraft.client.gui.GuiScreen;
import net.minecraft.client.resources.I18n;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

public class GuiMonsterBook extends GuiScreen {
	
	private final int bookImageHeight = 192;
    private final int bookImageWidth = 192;
    private int currPage = 0;
    private static final int bookTotalPages = 4;
    private static ResourceLocation[] bookPageTextures = 
          new ResourceLocation[bookTotalPages];
    private static String[] stringPageText = new String[bookTotalPages];
    private GuiButton buttonDone;
    private NextPageButton buttonNextPage;
    private NextPageButton buttonPreviousPage;
    
    public GuiMonsterBook()
    {
        bookPageTextures[0] = new ResourceLocation("apexmobs:textures/gui/ambook.png");
        bookPageTextures[1] = new ResourceLocation("apexmobs:textures/gui/ambook2.png");
        bookPageTextures[2] = new ResourceLocation("apexmobs:textures/gui/ambook2.png");
        stringPageText[0] = "";
        stringPageText[1] = "Page 1 stuff";
    	stringPageText[2]="Page 2 stuff";
    	stringPageText[3]="Page 3 stuff!";
 	}

    /**
     * Adds the buttons (and other controls) to the screen in question.
     */
    @Override
    public void initGui() 
    {
    	System.out.println(Mouse.isGrabbed());
    	buttonList.clear();
        Keyboard.enableRepeatEvents(true);

        buttonDone = new GuiButton(0, width / 2 + 2, 4 + bookImageHeight, 
              98, 20, I18n.format("gui.done", new Object[0]));
  
        buttonList.add(buttonDone);
        int offsetFromScreenLeft = (width - bookImageWidth) / 2;
        buttonList.add(buttonNextPage = new NextPageButton(1, 
              offsetFromScreenLeft + 120, 156, true));
        buttonList.add(buttonPreviousPage = new NextPageButton(2, 
              offsetFromScreenLeft + 38, 156, false));
    }

    /**
     * Called from the main game loop to update the screen.
     */
    @Override
    public void updateScreen() 
    {
        buttonDone.visible = (currPage == bookTotalPages - 1);
        buttonNextPage.visible = (currPage < bookTotalPages - 1);
        buttonPreviousPage.visible = currPage > 0;
        super.updateScreen();
    }
 
    /**
     * Draws the screen and all the components in it.
     */
    @Override
    public void drawScreen(int parWidth, int parHeight, float p_73863_3_)
    {
    	GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
        if (currPage == 0)
        {
         mc.getTextureManager().bindTexture(bookPageTextures[0]);
        }
        else
        {
         mc.getTextureManager().bindTexture(bookPageTextures[1]);
        }
        int offsetFromScreenLeft = (width - bookImageWidth ) / 2;
        drawTexturedModalRect(offsetFromScreenLeft, 2, 0, 0, bookImageWidth, 
              bookImageHeight);
        int widthOfString;
        String stringPageIndicator = I18n.format("book.pageIndicator", 
              new Object[] {Integer.valueOf(currPage + 1), bookTotalPages});
        widthOfString = this.fontRenderer.getStringWidth(stringPageIndicator);
        this.fontRenderer.drawString(stringPageIndicator, 
              offsetFromScreenLeft - widthOfString + bookImageWidth - 44, 
              18, 0);
        this.fontRenderer.drawSplitString(stringPageText[currPage], 
              offsetFromScreenLeft + 36, 34, 116, 0);
        super.drawScreen(parWidth, parHeight, p_73863_3_);

    }

    /**
     * Called when a mouse button is pressed and the mouse is moved around. 
     * Parameters are : mouseX, mouseY, lastButtonClicked & 
     * timeSinceMouseClick.
     */
    @Override
    protected void mouseClickMove(int parMouseX, int parMouseY, 
          int parLastButtonClicked, long parTimeSinceMouseClick) 
    {
     
    }

    @Override
    protected void actionPerformed(GuiButton parButton) 
    {
     if (parButton == buttonDone)
     {
         mc.displayGuiScreen((GuiScreen)null);
     }
        else if (parButton == buttonNextPage)
        {
            if (currPage < bookTotalPages - 1)
            {
                ++currPage;
            }
        }
        else if (parButton == buttonPreviousPage)
        {
            if (currPage > 0)
            {
                --currPage;
            }
        }
   }

    /**
     * Called when the screen is unloaded. Used to disable keyboard repeat 
     * events
     */
    @Override
    public void onGuiClosed() 
    {
    	Keyboard.enableRepeatEvents(false);
    }

    /**
     * Returns true if this GUI should pause the game when it is displayed in 
     * single-player
     */
    @Override
    public boolean doesGuiPauseGame()
    {
        return false;
    }
    
    @SideOnly(Side.CLIENT)
    static class NextPageButton extends GuiButton
    {
        private final boolean isNextButton;

        public NextPageButton(int parButtonId, int parPosX, int parPosY, 
              boolean parIsNextButton)
        {
            super(parButtonId, parPosX, parPosY, 23, 13, "");
            isNextButton = parIsNextButton;
        }

        /**
         * Draws this button to the screen.
         */
        @Override
        public void drawButton(Minecraft mc, int parX, int parY, float partialTicks)
        {
            if (visible)
            {
                boolean isButtonPressed = (parX >= this.x 
                      && parY >= this.y 
                      && parX < this.x + width 
                      && parY < this.y + height);
                GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
                mc.getTextureManager().bindTexture(bookPageTextures[1]);
                int textureX = 0;
                int textureY = 192;

                if (isButtonPressed)
                {
                    textureX += 23;
                }

                if (!isNextButton)
                {
                    textureY += 13;
                }

                drawTexturedModalRect(this.x, this.y, 
                      textureX, textureY, 
                      23, 13);
            }
        }
    }

}

 

The book item:

  Reveal hidden contents

package lyeoj.apexmobs.items;

import lyeoj.apexmobs.main.ApexMobs;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.ActionResult;
import net.minecraft.util.EnumHand;
import net.minecraft.world.World;

public class ItemMonsterBook extends Item {
	
	public ItemMonsterBook() {
		setUnlocalizedName("monsterbook");
		setRegistryName("monsterbook");
		setCreativeTab(CreativeTabs.MISC);
		setMaxStackSize(1);
	}
	
	/**
     * Called when the equipped item is right clicked.
     */
    public ActionResult<ItemStack> onItemRightClick(World worldIn, EntityPlayer playerIn, EnumHand handIn)
    {
    	if(!worldIn.isRemote) {
    		ApexMobs.proxy.drawMonsterBook();
    	}
    	return super.onItemRightClick(worldIn, playerIn, handIn);
    }

}

 

And finally the method in the client proxy to draw the GUI:

public void drawMonsterBook() {
		Minecraft.getMinecraft().displayGuiScreen(new GuiMonsterBook());
	}

 

[Lyeoj]

After a bit of trial and error, it looks like I have fixed the problem.  Although all the tutorial code included it, I removed the !world.isRemote check from my book item since I figured the proxies already were handling the side checks. Upon removing it, I now can see my mouse when opening the book!

Edited August 10, 2017 by Lyeoj