src/main/java/com/legacy/aether/client/gui/AetherLoadingScreen.java

package com.legacy.aether.client.gui;

import net.minecraft.client.LoadingScreenRenderer;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.Gui;
import net.minecraft.client.gui.ScaledResolution;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.client.renderer.OpenGlHelper;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.VertexBuffer;
import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
import net.minecraft.client.shader.Framebuffer;

import com.legacy.aether.client.gui.trivia.AetherTrivia;

public class AetherLoadingScreen extends LoadingScreenRenderer
{

    private String message = "";

    private Minecraft mc;

    private String currentlyDisplayedText = "";

    private String currentDisplayedTrivia = "";

    private long systemTime = Minecraft.getSystemTime();

    private Framebuffer framebuffer;

    public AetherLoadingScreen(Minecraft mcIn)
    {
		super(mcIn);

        this.mc = mcIn;

        this.framebuffer = new Framebuffer(mcIn.displayWidth, mcIn.displayHeight, false);
        this.framebuffer.setFramebufferFilter(9728);
	}

    @Override
    public void resetProgressAndMessage(String message)
    {
    	super.resetProgressAndMessage(message);

    	this.currentDisplayedTrivia = AetherTrivia.getNewTrivia();
    }

    @Override
    public void displayLoadingString(String message)
    {
        this.systemTime = 0L;
        this.message = message;
        this.setLoadingProgress(-1);
        this.systemTime = 0L;
    }

    @Override
    public void setLoadingProgress(int progress)
    {
        long i = Minecraft.getSystemTime();

        if (i - this.systemTime >= 100L)
        {
            this.systemTime = i;
            ScaledResolution scaledresolution = new ScaledResolution(this.mc);
            int j = scaledresolution.getScaleFactor();
            int k = scaledresolution.getScaledWidth();
            int l = scaledresolution.getScaledHeight();

            this.mc.fontRendererObj.drawStringWithShadow(this.currentDisplayedTrivia, (k - this.mc.fontRendererObj.getStringWidth(this.currentDisplayedTrivia)) / 2, l - 16, 0xffff99);
            if (OpenGlHelper.isFramebufferEnabled())
            {
                this.framebuffer.framebufferClear();
            }
            else
            {
                GlStateManager.clear(256);
            }

            this.framebuffer.bindFramebuffer(false);
            GlStateManager.matrixMode(5889);
            GlStateManager.loadIdentity();
            GlStateManager.ortho(0.0D, scaledresolution.getScaledWidth_double(), scaledresolution.getScaledHeight_double(), 0.0D, 100.0D, 300.0D);
            GlStateManager.matrixMode(5888);
            GlStateManager.loadIdentity();
            GlStateManager.translate(0.0F, 0.0F, -200.0F);

            if (!OpenGlHelper.isFramebufferEnabled())
            {
                GlStateManager.clear(16640);
            }

            try
            {
                if (!net.minecraftforge.fml.client.FMLClientHandler.instance().handleLoadingScreen(scaledresolution)) //FML Don't render while FML's pre-screen is rendering
                {
                    Tessellator tessellator = Tessellator.getInstance();
                    VertexBuffer worldrenderer = tessellator.getBuffer();
                    this.mc.getTextureManager().bindTexture(Gui.OPTIONS_BACKGROUND);
                    float f = 32.0F;
                    worldrenderer.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
                    worldrenderer.pos(0.0D, (double)l, 0.0D).tex(0.0D, (double)((float)l / f)).color(64, 64, 64, 255).endVertex();
                    worldrenderer.pos((double)k, (double)l, 0.0D).tex((double)((float)k / f), (double)((float)l / f)).color(64, 64, 64, 255).endVertex();
                    worldrenderer.pos((double)k, 0.0D, 0.0D).tex((double)((float)k / f), 0.0D).color(64, 64, 64, 255).endVertex();
                    worldrenderer.pos(0.0D, 0.0D, 0.0D).tex(0.0D, 0.0D).color(64, 64, 64, 255).endVertex();
                    tessellator.draw();

                    if (progress >= 0)
                    {
                        int i1 = 100;
                        int j1 = 2;
                        int k1 = k / 2 - i1 / 2;
                        int l1 = l / 2 + 16;
                        GlStateManager.disableTexture2D();
                        worldrenderer.begin(7, DefaultVertexFormats.POSITION_COLOR);
                        worldrenderer.pos((double)k1, (double)l1, 0.0D).color(128, 128, 128, 255).endVertex();
                        worldrenderer.pos((double)k1, (double)(l1 + j1), 0.0D).color(128, 128, 128, 255).endVertex();
                        worldrenderer.pos((double)(k1 + i1), (double)(l1 + j1), 0.0D).color(128, 128, 128, 255).endVertex();
                        worldrenderer.pos((double)(k1 + i1), (double)l1, 0.0D).color(128, 128, 128, 255).endVertex();
                        worldrenderer.pos((double)k1, (double)l1, 0.0D).color(128, 255, 128, 255).endVertex();
                        worldrenderer.pos((double)k1, (double)(l1 + j1), 0.0D).color(128, 255, 128, 255).endVertex();
                        worldrenderer.pos((double)(k1 + progress), (double)(l1 + j1), 0.0D).color(128, 255, 128, 255).endVertex();
                        worldrenderer.pos((double)(k1 + progress), (double)l1, 0.0D).color(128, 255, 128, 255).endVertex();
                        tessellator.draw();
                        GlStateManager.enableTexture2D();
                    }

                    GlStateManager.enableBlend();
                    GlStateManager.tryBlendFuncSeparate(770, 771, 1, 0);
                    this.mc.fontRendererObj.drawStringWithShadow(this.currentlyDisplayedText, (float)((k - this.mc.fontRendererObj.getStringWidth(this.currentlyDisplayedText)) / 2), (float)(l / 2 - 4 - 16), 16777215);
                    this.mc.fontRendererObj.drawStringWithShadow(this.message, (float)((k - this.mc.fontRendererObj.getStringWidth(this.message)) / 2), (float)(l / 2 - 4 + 8), 16777215);
                    this.mc.fontRendererObj.drawStringWithShadow(this.currentDisplayedTrivia, (k - this.mc.fontRendererObj.getStringWidth(this.currentDisplayedTrivia)) / 2, l - 16, 0xffff99);
                }
            }
            catch (java.io.IOException e)
            {
                com.google.common.base.Throwables.propagate(e);
            }

            this.framebuffer.unbindFramebuffer();

            if (OpenGlHelper.isFramebufferEnabled())
            {
                this.framebuffer.framebufferRender(k * j, l * j);
            }

            this.mc.updateDisplay();

            try
            {
                Thread.yield();
            }
            catch (Exception var15)
            {
                ;
            }
        }
    }

}