GuiEBGuide.java

package main.extremeblocks.client.guis;

import main.com.hk.eb.util.Info;
import main.com.hk.eb.util.RecipeUtils;
import main.extremeblocks.Guide;
import main.extremeblocks.Init;
import net.minecraft.block.Block;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.FontRenderer;
import net.minecraft.client.gui.GuiButton;
import net.minecraft.client.gui.GuiScreen;
import net.minecraft.client.renderer.RenderHelper;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.EnumChatFormatting;
import net.minecraft.util.ResourceLocation;
import org.lwjgl.opengl.GL11;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

@SideOnly(Side.CLIENT)
public class GuiEBGuide extends GuiScreen
{
    private static final ResourceLocation guideTexture = new ResourceLocation(Init.MODID + ":textures/gui/guide.png");
    private int imageWidth = 230;
    private int imageHeight = 180;
    private int zeroX;
    private int bookTotalPages = 1;
    private int currPage;

    public GuiEBGuide()
    {
        bookTotalPages = Guide.size + 1;
    }

    @SuppressWarnings("unchecked")
    @Override
    public void initGui()
    {
        zeroX = (width - imageWidth) / 2;
        buttonList.clear();

        buttonList.add(new GuiButton(0, width / 2 - 100, 6 + imageHeight, "Done"));
        buttonList.add(new NextPageButton(1, zeroX + imageWidth - 33, 156, true));
        buttonList.add(new NextPageButton(2, zeroX + 8, 156, false));
    }

    @Override
    protected void actionPerformed(GuiButton p_146284_1_)
    {
        if (p_146284_1_.enabled)
        {
            if (p_146284_1_.id == 0)
            {
                mc.displayGuiScreen((GuiScreen) null);
            }
            else if (p_146284_1_.id == 1)
            {
                if (currPage < bookTotalPages - 1)
                {
                    ++currPage;
                }
                else
                {
                    currPage = 0;
                }
            }
            else if (p_146284_1_.id == 2)
            {
                if (currPage > 0)
                {
                    --currPage;
                }
                else
                {
                    currPage = bookTotalPages - 1;
                }
            }
        }
    }

    @Override
    public void drawScreen(int p_73863_1_, int p_73863_2_, float p_73863_3_)
    {
        renderPage(currPage);

        super.drawScreen(p_73863_1_, p_73863_2_, p_73863_3_);
    }

    public void renderPage(int page)
    {
        GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
        mc.getTextureManager().bindTexture(guideTexture);
        drawTexturedModalRect(zeroX, 2, 0, 0, imageWidth, imageHeight);
        String s = isItemPage(page);
        if (s != null)
        {
            addPageNumber(page);
            drawNewLine(s);
        }
        else
        {
            page--;
            Info o = Guide.infos.get(page);
            addPageNumber(page + 1);
            drawNewLine(getStringFor(page, o));

            if (o.getElements().showRecipe)
            {
                ItemStack is = o instanceof Block ? new ItemStack((Block) o) : new ItemStack((Item) o);
                renderRecipe(is);
            }
        }
    }

    public String getStringFor(int page, Info o)
    {
        String name = "";
        if (o instanceof Block)
        {
            name = "-" + ((Block) o).getLocalizedName() + "-\n";
        }
        else if (o instanceof Item)
        {
            name = "-" + ((Item) o).getUnlocalizedName() + "-\n";
        }
        else if (!(o instanceof Item) && !(o instanceof Block)) return o == null ? "null" : o.getClass().getName();
        return EnumChatFormatting.BOLD + name + EnumChatFormatting.RESET + o.getInfo();
    }

    public String isItemPage(int page)
    {
        switch (page)
        {
            case 0:
                return "This is the Extreme Blocks Mod Guide! Here, you will find the information to every single unique item and block. What this means is if something has a special function. It will be here. Else, it won't. If you think something does have a use, and it's not here. Please Let me know! I will fix it!. \nP.S. It's Alphabetized!";
        }
        return null;
    }

    public void renderRecipe(ItemStack stack)
    {
        int gridX = zeroX + imageWidth / 2 - 80;
        int gridY = imageHeight - 71;
        ItemStack[] recipeItems = RecipeUtils.getFirstRecipeForItem(stack);
        if (recipeItems != null)
        {
            for (int i = 0; i < recipeItems.length; i++)
            {
                if (recipeItems[i] != null)
                {
                    int[] pos = getPosFor(i);
                    renderItemAt(1 + gridX + pos[0], 1 + gridY + pos[1], recipeItems[i].getItem());
                }
            }
            stack = stack.copy();
            stack.stackSize = RecipeUtils.getRecipeFor(stack).getRecipeOutput().stackSize;
        }
        renderItemAt(gridX + 72, gridY + 18, stack);
        drawGridAt(gridX, gridY);
    }

    public int[] getPosFor(int i)
    {
        int[] pos = new int[] { 0, 0 };
        pos[0] = i == 0 || i == 3 || i == 6 ? 0 : i == 1 || i == 4 || i == 7 ? 18 : 36;
        pos[1] = i == 0 || i == 1 || i == 2 ? 0 : i == 3 || i == 4 || i == 5 ? 18 : 36;
        return pos;
    }

    public void renderItemAt(int x, int y, Object o)
    {
        RenderHelper.enableGUIStandardItemLighting();
        drawItemStack(o instanceof Block ? new ItemStack((Block) o) : o instanceof Item ? new ItemStack((Item) o) : o instanceof ItemStack ? ((ItemStack) o).copy() : null, x, y);
        RenderHelper.disableStandardItemLighting();
    }

    private void drawItemStack(ItemStack stack, int x, int y)
    {
        GL11.glTranslatef(0.0F, 0.0F, 32.0F);
        zLevel = 200.0F;
        itemRender.zLevel = 200.0F;
        FontRenderer font = null;
        if (stack != null)
        {
            font = stack.getItem().getFontRenderer(stack);
        }
        if (font == null)
        {
            font = fontRendererObj;
        }
        itemRender.renderItemAndEffectIntoGUI(font, mc.getTextureManager(), stack, x, y);
        itemRender.renderItemOverlayIntoGUI(font, mc.getTextureManager(), stack, x, y);
        zLevel = 0.0F;
        itemRender.zLevel = 0.0F;
    }

    public void drawGridAt(int x, int y)
    {
        GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
        mc.getTextureManager().bindTexture(guideTexture);
        drawTexturedModalRect(x, y, 63, 187, 53, 53);
    }

    public void drawNewLine(String line)
    {
        fontRendererObj.drawSplitString(line, zeroX + 15, 18, 200, 0);
    }

    public void addPageNumber(int page)
    {
        page++;
        String s = page + "/" + bookTotalPages;
        int l = fontRendererObj.getStringWidth(s);
        fontRendererObj.drawString(s, zeroX + imageWidth - 33 - l, imageHeight - 20, 0);
    }

    @SideOnly(Side.CLIENT)
    public static class NextPageButton extends GuiButton
    {
        private final boolean next;

        public NextPageButton(int id, int x, int y, boolean normal)
        {
            super(id, x, y, 23, 13, "");
            next = normal;
        }

        @Override
        public void drawButton(Minecraft mc, int x, int y)
        {
            if (visible)
            {
                boolean flag = x >= xPosition && y >= yPosition && x < xPosition + width && y < yPosition + height;
                GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
                mc.getTextureManager().bindTexture(guideTexture);
                int k = 3;
                int l = 194;

                if (flag)
                {
                    k += 23;
                }

                if (next)
                {
                    l += 14;
                }

                drawTexturedModalRect(xPosition, yPosition, k, l, 17, 8);
            }
        }
    }
}