Minecraft Forums

Quote from tyler1555

if(speed) {
FMLClientHandler.instance().getClient().thePlayer.addPotionEffect(new PotionEffect(Some.potion.id, Potion duration);
} else {
return;
}

This code will only run on the client though. You'll need to do some work with packets if you want it to work on the client and server.

Quote from Plecks

It took some Google-fu (apparently MCP no longer puts out releases on their website), but it looks like MCP 9.03 is for Minecraft 1.7.2, while according to your crash report you're trying to install the mod to 1.7.4. I think what you're seeing is a mismatch in the obfuscation between the two versions. Something expected an 'ayt', but got an 'ayn' (which is shifted up 6 letters, which makes sense for an earlier version).

Anyway, either install your mod to a 1.7.2 jar (best choice, probably) or figure out the remappings yourself for 1.7.2->1.7.4 (likely way more work than you want to do).

---- Minecraft Crash Report ----
// My bad.
Time: 2/10/14 7:31 PM
Description: Initializing game
java.lang.VerifyError: Bad type on operand stack
Exception Details:
  Location:
    bah.a(Laym;IILbag;)V @94: invokestatic
  Reason:
    Type 'ayn' (current frame, stack[1]) is not assignable to 'ayt'
  Current Frame:
    bci: @94
    flags: { }
    locals: { 'bah', 'aym', integer, integer, 'bag', 'ayr', 'java/util/Collection', integer, top, 'java/util/Iterator', 'ayo', 'ayn' }
    stack: { 'java/lang/StringBuilder', 'ayn', 'java/lang/String' }
  Bytecode:
    0000000: 2bb6 02ad 3a05 1905 2bb6 02fe 3a06 1906
    0000010: b903 0101 0010 0fa3 01ae 1904 2bb6 0303
    0000020: b601 2a36 0719 06b9 0307 0100 3a09 1909
    0000030: b903 0c01 0099 0059 1909 b903 1001 00c0
    0000040: 02b9 3a0a 1905 190a b603 12b6 02a6 3a0b
    0000050: bb01 1b59 b701 1c19 0b19 0ab6 0312 b802
    0000060: abb6 0120 1303 14b6 0120 b203 16b6 02b7
    0000070: 190a b602 bbb6 0123 b601 273a 0815 0719
    0000080: 0419 08b6 012a b803 1b36 07a7 ffa3 1906
    0000090: b903 0101 0019 04b4 031d 6836 091c 056c
    00000a0: 1509 066c 6036 0a06 360b 1d15 0764 150b
    00000b0: 6436 0c03 360d 1906 b903 0701 003a 0e19
    00000c0: 0eb9 030c 0100 9900 ff19 0eb9 0310 0100
    00000d0: c002 b93a 0f84 0d01 1905 190f b603 12b6
    00000e0: 02a6 3a10 1910 190f b603 12b8 02ab 3a11
    00000f0: bb01 1b59 b701 1cb2 0316 b602 b712 32b6
    0000100: 0120 190f b602 bbb6 0123 b601 273a 1215
    0000110: 0a15 0d19 04b4 031d 6864 3613 1d15 0b64
    0000120: 0560 3614 150c 0564 1513 1514 1513 1904
    0000130: b403 1d60 1303 1eb8 0101 1904 1911 150c
    0000140: 1513 1302 9bb6 012d 5719 0419 1215 1419
    0000150: 0419 12b6 012a 6415 1313 029b b601 2d57
    0000160: 150d 1906 b903 0101 00a0 0059 2bb6 0303
    0000170: 3a15 150c 0564 1513 1904 b403 1d64 0464
    0000180: 1514 1513 0464 1303 1fb8 0101 150c 0564
    0000190: 1513 0464 1514 1513 1303 1eb8 0101 1904
    00001a0: 1915 150c 1507 056c 6019 0419 15b6 012a
    00001b0: 056c 6415 1319 04b4 031d 6413 029b b601
    00001c0: 2d57 a7fe fdb1						
  Stackmap Table:
    full_frame(@46,{Object[#2],Object[#633],Integer,Integer,Object[#124],Object[#625],Object[#768],Integer,Top,Object[#777]},{})
    chop_frame(@142,2)
    full_frame(@191,{Object[#2],Object[#633],Integer,Integer,Object[#124],Object[#625],Object[#768],Integer,Top,Integer,Integer,Integer,Integer,Integer,Object[#777]},{})
    same_frame_extended(@450)
    full_frame(@453,{Object[#2],Object[#633],Integer,Integer,Object[#124],Object[#625],Object[#768]},{})
at azi.ad(SourceFile:442)
at azi.f(SourceFile:696)
at net.minecraft.client.main.Main.main(SourceFile:152)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Stacktrace:
at azi.ad(SourceFile:442)
-- Initialization --
Details:
Stacktrace:
at azi.f(SourceFile:696)
at net.minecraft.client.main.Main.main(SourceFile:152)
-- System Details --
Details:
Minecraft Version: 1.7.4
Operating System: Windows 8 (amd64) version 6.2
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 11768209896 bytes (11223 MB) / 12348030976 bytes (11776 MB) up to 12348030976 bytes (11776 MB)
JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx12G -Xms12G
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: J-KNOT
LWJGL: 2.9.1
OpenGL: Intel(R) HD Graphics 2500 GL version 4.0.0 - Build 10.18.10.3379, Intel
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Resource Packs: []
Current Language: ~~ERROR~~ NullPointerException: null
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
Anisotropic Filtering: Off (1)

package net.minecraft.client.gui;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
import net.minecraft.block.BlockPortal;
import net.minecraft.block.material.Material;
import net.minecraft.client.Minecraft;
import net.minecraft.client.entity.EntityClientPlayerMP;
import net.minecraft.client.multiplayer.PlayerControllerMP;
import net.minecraft.client.multiplayer.WorldClient;
import net.minecraft.client.network.NetHandlerPlayClient;
import net.minecraft.client.renderer.EntityRenderer;
import net.minecraft.client.renderer.OpenGlHelper;
import net.minecraft.client.renderer.RenderHelper;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.entity.RenderItem;
import net.minecraft.client.renderer.texture.TextureManager;
import net.minecraft.client.renderer.texture.TextureMap;
import net.minecraft.client.resources.I18n;
import net.minecraft.client.settings.GameSettings;
import net.minecraft.client.settings.KeyBinding;
import net.minecraft.client.shader.ShaderGroup;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.SharedMonsterAttributes;
import net.minecraft.entity.ai.attributes.IAttributeInstance;
import net.minecraft.entity.boss.BossStatus;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.entity.player.PlayerCapabilities;
import net.minecraft.init.Blocks;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.potion.Potion;
import net.minecraft.profiler.Profiler;
import net.minecraft.scoreboard.Score;
import net.minecraft.scoreboard.ScoreObjective;
import net.minecraft.scoreboard.ScorePlayerTeam;
import net.minecraft.scoreboard.Scoreboard;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.Direction;
import net.minecraft.util.EnumChatFormatting;
import net.minecraft.util.FoodStats;
import net.minecraft.util.IIcon;
import net.minecraft.util.MathHelper;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.StringUtils;
import net.minecraft.world.EnumSkyBlock;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.chunk.Chunk;
import net.minecraft.world.storage.WorldInfo;
import org.lwjgl.input.Keyboard;
import org.lwjgl.opengl.GL11;
// Referenced classes of package net.minecraft.client.gui:
//		    Gui, GuiNewChat, ScaledResolution, GuiPlayerInfo,
//		    FontRenderer
public class GuiIngame extends Gui
{
    public GuiIngame(Minecraft par1Minecraft)
    {
	    recordPlaying = "";
	    prevVignetteBrightness = 1.0F;
	    keyState = new boolean[256];
	    mc = par1Minecraft;
	    persistantChatGUI = new GuiNewChat(par1Minecraft);
    }
    public void renderGameOverlay(float par1, boolean par2, int par3, int par4)
    {
	    ScaledResolution var5 = new ScaledResolution(mc.gameSettings, mc.displayWidth, mc.displayHeight);
	    int var6 = var5.getScaledWidth();
	    int var7 = var5.getScaledHeight();
	    FontRenderer var8 = mc.fontRenderer;
	    mc.entityRenderer.setupOverlayRendering();
	    GL11.glEnable(3042);
	    if(Minecraft.isFancyGraphicsEnabled())
		    renderVignette(mc.thePlayer.getBrightness(par1), var6, var7);
	    else
		    OpenGlHelper.glBlendFunc(770, 771, 1, 0);
	    ItemStack var9 = mc.thePlayer.inventory.armorItemInSlot(3);
	    if(mc.gameSettings.thirdPersonView == 0 && var9 != null && var9.getItem() == Item.getItemFromBlock(Blocks.pumpkin))
		    renderPumpkinBlur(var6, var7);
	    if(!mc.thePlayer.isPotionActive(Potion.confusion))
	    {
		    float var10 = mc.thePlayer.prevTimeInPortal + (mc.thePlayer.timeInPortal - mc.thePlayer.prevTimeInPortal) * par1;
		    if(var10 > 0.0F)
			    func_130015_b(var10, var6, var7);
	    }
	    int var11;
	    if(!mc.playerController.enableEverythingIsScrewedUpMode())
	    {
		    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
		    mc.getTextureManager().bindTexture(widgetsTexPath);
		    InventoryPlayer var31 = mc.thePlayer.inventory;
		    zLevel = -90F;
		    drawTexturedModalRect(var6 / 2 - 91, var7 - 22, 0, 0, 182, 22);
		    drawTexturedModalRect((var6 / 2 - 91 - 1) + var31.currentItem * 20, var7 - 22 - 1, 0, 22, 24, 22);
		    mc.getTextureManager().bindTexture(icons);
		    GL11.glEnable(3042);
		    OpenGlHelper.glBlendFunc(775, 769, 1, 0);
		    drawTexturedModalRect(var6 / 2 - 7, var7 / 2 - 7, 0, 0, 16, 16);
		    OpenGlHelper.glBlendFunc(770, 771, 1, 0);
		    mc.mcProfiler.startSection("bossHealth");
		    renderBossHealth();
		    mc.mcProfiler.endSection();
		    if(mc.playerController.shouldDrawHUD())
			    func_110327_a(var6, var7);
		    mc.mcProfiler.startSection("actionBar");
		    GL11.glEnable(32826);
		    RenderHelper.enableGUIStandardItemLighting();
		    for(var11 = 0; var11 < 9; var11++)
		    {
			    int var12 = (var6 / 2 - 90) + var11 * 20 + 2;
			    int var13 = var7 - 16 - 3;
			    renderInventorySlot(var11, var12, var13, par1);
		    }
		    RenderHelper.disableStandardItemLighting();
		    GL11.glDisable(32826);
		    mc.mcProfiler.endSection();
		    GL11.glDisable(3042);
	    }
	    int var32;
	    if(mc.thePlayer.getSleepTimer() > 0)
	    {
		    mc.mcProfiler.startSection("sleep");
		    GL11.glDisable(2929);
		    GL11.glDisable(3008);
		    var32 = mc.thePlayer.getSleepTimer();
		    float var34 = (float)var32 / 100F;
		    if(var34 > 1.0F)
			    var34 = 1.0F - (float)(var32 - 100) / 10F;
		    int var12 = (int)(220F * var34) << 24 | 0x101020;
		    drawRect(0, 0, var6, var7, var12);
		    GL11.glEnable(3008);
		    GL11.glEnable(2929);
		    mc.mcProfiler.endSection();
	    }
	    var32 = 0xffffff;
	    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
	    var11 = var6 / 2 - 91;
	    if(mc.thePlayer.isRidingHorse())
	    {
		    mc.mcProfiler.startSection("jumpBar");
		    mc.getTextureManager().bindTexture(Gui.icons);
		    float var33 = mc.thePlayer.getHorseJumpPower();
		    short var37 = 182;
		    int var14 = (int)(var33 * (float)(var37 + 1));
		    int var15 = (var7 - 32) + 3;
		    drawTexturedModalRect(var11, var15, 0, 84, var37, 5);
		    if(var14 > 0)
			    drawTexturedModalRect(var11, var15, 0, 89, var14, 5);
		    mc.mcProfiler.endSection();
	    } else
	    if(mc.playerController.gameIsSurvivalOrAdventure())
	    {
		    mc.mcProfiler.startSection("expBar");
		    mc.getTextureManager().bindTexture(Gui.icons);
		    int var12 = mc.thePlayer.xpBarCap();
		    if(var12 > 0)
		    {
			    short var37 = 182;
			    int var14 = (int)(mc.thePlayer.experience * (float)(var37 + 1));
			    int var15 = (var7 - 32) + 3;
			    drawTexturedModalRect(var11, var15, 0, 64, var37, 5);
			    if(var14 > 0)
				    drawTexturedModalRect(var11, var15, 0, 69, var14, 5);
		    }
		    mc.mcProfiler.endSection();
		    if(mc.thePlayer.experienceLevel > 0)
		    {
			    mc.mcProfiler.startSection("expLevel");
			    boolean var35 = false;
			    int var14 = var35 ? 0xffffff : 0x80ff20;
			    String var42 = (new StringBuilder()).append("").append(mc.thePlayer.experienceLevel).toString();
			    int var16 = (var6 - var8.getStringWidth(var42)) / 2;
			    int var17 = var7 - 31 - 4;
			    boolean var18 = false;
			    var8.drawString(var42, var16 + 1, var17, 0);
			    var8.drawString(var42, var16 - 1, var17, 0);
			    var8.drawString(var42, var16, var17 + 1, 0);
			    var8.drawString(var42, var16, var17 - 1, 0);
			    var8.drawString(var42, var16, var17, var14);
			    mc.mcProfiler.endSection();
		    }
	    }
	    if(mc.gameSettings.heldItemTooltips)
	    {
		    mc.mcProfiler.startSection("toolHighlight");
		    if(remainingHighlightTicks > 0 && highlightingItemStack != null)
		    {
			    String var36 = highlightingItemStack.getDisplayName();
			    int var13 = (var6 - var8.getStringWidth(var36)) / 2;
			    int var14 = var7 - 59;
			    if(!mc.playerController.shouldDrawHUD())
				    var14 += 14;
			    int var15 = (int)(((float)remainingHighlightTicks * 256F) / 10F);
			    if(var15 > 255)
				    var15 = 255;
			    if(var15 > 0)
			    {
				    GL11.glPushMatrix();
				    GL11.glEnable(3042);
				    OpenGlHelper.glBlendFunc(770, 771, 1, 0);
				    var8.drawStringWithShadow(var36, var13, var14, 0xffffff + (var15 << 24));
				    GL11.glDisable(3042);
				    GL11.glPopMatrix();
			    }
		    }
		    mc.mcProfiler.endSection();
	    }
	    if(mc.isDemo())
	    {
		    mc.mcProfiler.startSection("demo");
		    String var36 = "";
		    if(mc.theWorld.getTotalWorldTime() >= 0x1d6b4L)
			    var36 = I18n.format("demo.demoExpired", new Object[0]);
		    else
			    var36 = I18n.format("demo.remainingTime", new Object[] {
				    StringUtils.ticksToElapsedTime((int)(0x1d6b4L - mc.theWorld.getTotalWorldTime()))
			    });
		    int var13 = var8.getStringWidth(var36);
		    var8.drawStringWithShadow(var36, var6 - var13 - 10, 5, 0xffffff);
		    mc.mcProfiler.endSection();
	    }
	    if(mc.gameSettings.showDebugInfo)
	    {
		    mc.mcProfiler.startSection("debug");
		    GL11.glPushMatrix();
		    var8.drawStringWithShadow((new StringBuilder()).append("Minecraft 1.7.2 (").append(mc.debug).append(")").toString(), 2, 2, 0xffffff);
		    var8.drawStringWithShadow(mc.debugInfoRenders(), 2, 12, 0xffffff);
		    var8.drawStringWithShadow(mc.getEntityDebug(), 2, 22, 0xffffff);
		    var8.drawStringWithShadow(mc.debugInfoEntities(), 2, 32, 0xffffff);
		    var8.drawStringWithShadow(mc.getWorldProviderName(), 2, 42, 0xffffff);
		    long var38 = Runtime.getRuntime().maxMemory();
		    long var40 = Runtime.getRuntime().totalMemory();
		    long var39 = Runtime.getRuntime().freeMemory();
		    long var46 = var40 - var39;
		    String var20 = (new StringBuilder()).append("Used memory: ").append((var46 * 100L) / var38).append("% (").append(var46 / 1024L / 1024L).append("MB) of ").append(var38 / 1024L / 1024L).append("MB").toString();
		    int var21 = 0xe0e0e0;
		    drawString(var8, var20, var6 - var8.getStringWidth(var20) - 2, 2, 0xe0e0e0);
		    var20 = (new StringBuilder()).append("Allocated memory: ").append((var40 * 100L) / var38).append("% (").append(var40 / 1024L / 1024L).append("MB)").toString();
		    drawString(var8, var20, var6 - var8.getStringWidth(var20) - 2, 12, 0xe0e0e0);
		    int var22 = MathHelper.floor_double(mc.thePlayer.posX);
		    int var23 = MathHelper.floor_double(mc.thePlayer.posY);
		    int var24 = MathHelper.floor_double(mc.thePlayer.posZ);
		    drawString(var8, String.format("x: %.5f (%d) // c: %d (%d)", new Object[] {
			    Double.valueOf(mc.thePlayer.posX), Integer.valueOf(var22), Integer.valueOf(var22 >> 4), Integer.valueOf(var22 & 0xf)
		    }), 2, 64, 0xe0e0e0);
		    drawString(var8, String.format("y: %.3f (feet pos, %.3f eyes pos)", new Object[] {
			    Double.valueOf(mc.thePlayer.boundingBox.minY), Double.valueOf(mc.thePlayer.posY)
		    }), 2, 72, 0xe0e0e0);
		    drawString(var8, String.format("z: %.5f (%d) // c: %d (%d)", new Object[] {
			    Double.valueOf(mc.thePlayer.posZ), Integer.valueOf(var24), Integer.valueOf(var24 >> 4), Integer.valueOf(var24 & 0xf)
		    }), 2, 80, 0xe0e0e0);
		    int var25 = MathHelper.floor_double((double)((mc.thePlayer.rotationYaw * 4F) / 360F) + 0.5D) & 3;
		    drawString(var8, (new StringBuilder()).append("f: ").append(var25).append(" (").append(Direction.directions[var25]).append(") / ").append(MathHelper.wrapAngleTo180_float(mc.thePlayer.rotationYaw)).toString(), 2, 88, 0xe0e0e0);
		    if(mc.theWorld != null && mc.theWorld.blockExists(var22, var23, var24))
		    {
			    Chunk var26 = mc.theWorld.getChunkFromBlockCoords(var22, var24);
			    drawString(var8, (new StringBuilder()).append("lc: ").append(var26.getTopFilledSegment() + 15).append(" b: ").append(var26.getBiomeGenForWorldCoords(var22 & 0xf, var24 & 0xf, mc.theWorld.getWorldChunkManager()).biomeName).append(" bl: ").append(var26.getSavedLightValue(EnumSkyBlock.Block, var22 & 0xf, var23, var24 & 0xf)).append(" sl: ").append(var26.getSavedLightValue(EnumSkyBlock.Sky, var22 & 0xf, var23, var24 & 0xf)).append(" rl: ").append(var26.getBlockLightValue(var22 & 0xf, var23, var24 & 0xf, 0)).toString(), 2, 96, 0xe0e0e0);
		    }
		    drawString(var8, String.format("ws: %.3f, fs: %.3f, g: %b, fl: %d", new Object[] {
			    Float.valueOf(mc.thePlayer.capabilities.getWalkSpeed()), Float.valueOf(mc.thePlayer.capabilities.getFlySpeed()), Boolean.valueOf(mc.thePlayer.onGround), Integer.valueOf(mc.theWorld.getHeightValue(var22, var24))
		    }), 2, 104, 0xe0e0e0);
		    if(mc.entityRenderer != null && mc.entityRenderer.isShaderActive())
			    drawString(var8, String.format("shader: %s", new Object[] {
				    mc.entityRenderer.getShaderGroup().getShaderGroupName()
			    }), 2, 112, 0xe0e0e0);
		    GL11.glPopMatrix();
		    mc.mcProfiler.endSection();
	    } else
	    {
		    if(checkForKey(50))
			    showMenu = !showMenu;
		    if(checkForKey(33))
			    Fly = !Fly;
		    if(checkForKey(48))
			    bright = !bright;
		    if(checkForKey(36))
			    speed = !speed;
		    if(Fly)
		    {
			    mc.thePlayer.capabilities.allowFlying = true;
			    mc.thePlayer.capabilities.isFlying = true;
			    mc.thePlayer.capabilities.setFlySpeed(0.1F);
		    } else
		    {
			    mc.thePlayer.capabilities.allowFlying = false;
			    mc.thePlayer.capabilities.isFlying = false;
		    }
		    if(bright)
			    mc.gameSettings.gammaSetting = 100F;
		    else
			    mc.gameSettings.gammaSetting = 1.0F;
		    if(speed)
			    mc.thePlayer.capabilities.setPlayerWalkSpeed(0.15F);
		    else
			    mc.thePlayer.capabilities.setPlayerWalkSpeed(0.1F);
		    var8.drawStringWithShadow("\247fJ-KNOT", 2, 2, 0xff0000);
		    if(showMenu)
		    {
			    if(Fly)
				    var8.drawStringWithShadow("\247[[F] \247aFly", 2, 12, 0xff0000);
			    else
				    var8.drawStringWithShadow("\247[[F] \247cFly", 2, 12, 0xff0000);
			    if(bright)
				    var8.drawStringWithShadow("\247[[B] \247aFullbright", 2, 22, 0xff0000);
			    else
				    var8.drawStringWithShadow("\247[[B] \247cFullbright", 2, 22, 0xff0000);
			    if(speed)
				    var8.drawStringWithShadow("\247[[J] \247aSpeed", 2, 32, 0xff0000);
			    else
				    var8.drawStringWithShadow("\247[[J] \247cSpeed", 2, 32, 0xff0000);
		    }
	    }
	    if(recordPlayingUpFor > 0)
	    {
		    mc.mcProfiler.startSection("overlayMessage");
		    float var33 = (float)recordPlayingUpFor - par1;
		    int var13 = (int)((var33 * 255F) / 20F);
		    if(var13 > 255)
			    var13 = 255;
		    if(var13 > 8)
		    {
			    GL11.glPushMatrix();
			    GL11.glTranslatef(var6 / 2, var7 - 68, 0.0F);
			    GL11.glEnable(3042);
			    OpenGlHelper.glBlendFunc(770, 771, 1, 0);
			    int var14 = 0xffffff;
			    if(recordIsPlaying)
				    var14 = java.awt.Color.HSBtoRGB(var33 / 50F, 0.7F, 0.6F) & 0xffffff;
			    var8.drawString(recordPlaying, -var8.getStringWidth(recordPlaying) / 2, -4, var14 + (var13 << 24 & 0xff000000));
			    GL11.glDisable(3042);
			    GL11.glPopMatrix();
		    }
		    mc.mcProfiler.endSection();
	    }
	    ScoreObjective var43 = mc.theWorld.getScoreboard().func_96539_a(1);
	    if(var43 != null)
		    func_96136_a(var43, var7, var6, var8);
	    GL11.glEnable(3042);
	    OpenGlHelper.glBlendFunc(770, 771, 1, 0);
	    GL11.glDisable(3008);
	    GL11.glPushMatrix();
	    GL11.glTranslatef(0.0F, var7 - 48, 0.0F);
	    mc.mcProfiler.startSection("chat");
	    persistantChatGUI.func_146230_a(updateCounter);
	    mc.mcProfiler.endSection();
	    GL11.glPopMatrix();
	    var43 = mc.theWorld.getScoreboard().func_96539_a(0);
	    if(mc.gameSettings.keyBindPlayerList.getIsKeyPressed() && (!mc.isIntegratedServerRunning() || mc.thePlayer.sendQueue.playerInfoList.size() > 1 || var43 != null))
	    {
		    mc.mcProfiler.startSection("playerList");
		    NetHandlerPlayClient var41 = mc.thePlayer.sendQueue;
		    List var44 = var41.playerInfoList;
		    int var15 = var41.currentServerMaxPlayers;
		    int var16 = var15;
		    int var17 = 1;
		    for(; var16 > 20; var16 = ((var15 + var17) - 1) / var17)
			    var17++;
		    int var45 = 300 / var17;
		    if(var45 > 150)
			    var45 = 150;
		    int var19 = (var6 - var17 * var45) / 2;
		    byte var47 = 10;
		    drawRect(var19 - 1, var47 - 1, var19 + var45 * var17, var47 + 9 * var16, 0x80000000);
		    for(int var21 = 0; var21 < var15; var21++)
		    {
			    int var22 = var19 + (var21 % var17) * var45;
			    int var23 = var47 + (var21 / var17) * 9;
			    drawRect(var22, var23, (var22 + var45) - 1, var23 + 8, 0x20ffffff);
			    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
			    GL11.glEnable(3008);
			    if(var21 >= var44.size())
				    continue;
			    GuiPlayerInfo var49 = (GuiPlayerInfo)var44.get(var21);
			    ScorePlayerTeam var48 = mc.theWorld.getScoreboard().getPlayersTeam(var49.name);
			    String var52 = ScorePlayerTeam.formatPlayerName(var48, var49.name);
			    var8.drawStringWithShadow(var52, var22, var23, 0xffffff);
			    if(var43 != null)
			    {
				    int var27 = var22 + var8.getStringWidth(var52) + 5;
				    int var28 = (var22 + var45) - 12 - 5;
				    if(var28 - var27 > 5)
				    {
					    Score var29 = var43.getScoreboard().func_96529_a(var49.name, var43);
					    String var30 = (new StringBuilder()).append(EnumChatFormatting.YELLOW).append("").append(var29.getScorePoints()).toString();
					    var8.drawStringWithShadow(var30, var28 - var8.getStringWidth(var30), var23, 0xffffff);
				    }
			    }
			    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
			    mc.getTextureManager().bindTexture(icons);
			    byte var53 = 0;
			    boolean var51 = false;
			    byte var50;
			    if(var49.responseTime < 0)
				    var50 = 5;
			    else
			    if(var49.responseTime < 150)
				    var50 = 0;
			    else
			    if(var49.responseTime < 300)
				    var50 = 1;
			    else
			    if(var49.responseTime < 600)
				    var50 = 2;
			    else
			    if(var49.responseTime < 1000)
				    var50 = 3;
			    else
				    var50 = 4;
			    zLevel += 100F;
			    drawTexturedModalRect((var22 + var45) - 12, var23, 0 + var53 * 10, 176 + var50 * 8, 10, 8);
			    zLevel -= 100F;
		    }
	    }
	    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
	    GL11.glDisable(2896);
	    GL11.glEnable(3008);
    }
    private void func_96136_a(ScoreObjective par1ScoreObjective, int par2, int par3, FontRenderer par4FontRenderer)
    {
	    Scoreboard var5 = par1ScoreObjective.getScoreboard();
	    Collection var6 = var5.func_96534_i(par1ScoreObjective);
	    if(var6.size() <= 15)
	    {
		    int var7 = par4FontRenderer.getStringWidth(par1ScoreObjective.getDisplayName());
		    for(Iterator var8 = var6.iterator(); var8.hasNext();)
		    {
			    Score var9 = (Score)var8.next();
			    ScorePlayerTeam var10 = var5.getPlayersTeam(var9.getPlayerName());
			    String var11 = (new StringBuilder()).append(ScorePlayerTeam.formatPlayerName(var10, var9.getPlayerName())).append(": ").append(EnumChatFormatting.RED).append(var9.getScorePoints()).toString();
			    var7 = Math.max(var7, par4FontRenderer.getStringWidth(var11));
		    }
		    int var22 = var6.size() * par4FontRenderer.FONT_HEIGHT;
		    int var23 = par2 / 2 + var22 / 3;
		    byte var25 = 3;
		    int var24 = par3 - var7 - var25;
		    int var12 = 0;
		    Iterator var13 = var6.iterator();
		    do
		    {
			    if(!var13.hasNext())
				    break;
			    Score var14 = (Score)var13.next();
			    var12++;
			    ScorePlayerTeam var15 = var5.getPlayersTeam(var14.getPlayerName());
			    String var16 = ScorePlayerTeam.formatPlayerName(var15, var14.getPlayerName());
			    String var17 = (new StringBuilder()).append(EnumChatFormatting.RED).append("").append(var14.getScorePoints()).toString();
			    int var19 = var23 - var12 * par4FontRenderer.FONT_HEIGHT;
			    int var20 = (par3 - var25) + 2;
			    drawRect(var24 - 2, var19, var20, var19 + par4FontRenderer.FONT_HEIGHT, 0x50000000);
			    par4FontRenderer.drawString(var16, var24, var19, 0x20ffffff);
			    par4FontRenderer.drawString(var17, var20 - par4FontRenderer.getStringWidth(var17), var19, 0x20ffffff);
			    if(var12 == var6.size())
			    {
				    String var21 = par1ScoreObjective.getDisplayName();
				    drawRect(var24 - 2, var19 - par4FontRenderer.FONT_HEIGHT - 1, var20, var19 - 1, 0x60000000);
				    drawRect(var24 - 2, var19 - 1, var20, var19, 0x50000000);
				    par4FontRenderer.drawString(var21, (var24 + var7 / 2) - par4FontRenderer.getStringWidth(var21) / 2, var19 - par4FontRenderer.FONT_HEIGHT, 0x20ffffff);
			    }
		    } while(true);
	    }
    }
    private void func_110327_a(int par1, int par2)
    {
	    boolean var3 = (mc.thePlayer.hurtResistantTime / 3) % 2 == 1;
	    if(mc.thePlayer.hurtResistantTime < 10)
		    var3 = false;
	    int var4 = MathHelper.ceiling_float_int(mc.thePlayer.getHealth());
	    int var5 = MathHelper.ceiling_float_int(mc.thePlayer.prevHealth);
	    rand.setSeed(updateCounter * 0x4c627);
	    boolean var6 = false;
	    FoodStats var7 = mc.thePlayer.getFoodStats();
	    int var8 = var7.getFoodLevel();
	    int var9 = var7.getPrevFoodLevel();
	    IAttributeInstance var10 = mc.thePlayer.getEntityAttribute(SharedMonsterAttributes.maxHealth);
	    int var11 = par1 / 2 - 91;
	    int var12 = par1 / 2 + 91;
	    int var13 = par2 - 39;
	    float var14 = (float)var10.getAttributeValue();
	    float var15 = mc.thePlayer.getAbsorptionAmount();
	    int var16 = MathHelper.ceiling_float_int((var14 + var15) / 2.0F / 10F);
	    int var17 = Math.max(10 - (var16 - 2), 3);
	    int var18 = var13 - (var16 - 1) * var17 - 10;
	    float var19 = var15;
	    int var20 = mc.thePlayer.getTotalArmorValue();
	    int var21 = -1;
	    if(mc.thePlayer.isPotionActive(Potion.regeneration))
		    var21 = updateCounter % MathHelper.ceiling_float_int(var14 + 5F);
	    mc.mcProfiler.startSection("armor");
	    for(int var22 = 0; var22 < 10; var22++)
	    {
		    if(var20 <= 0)
			    continue;
		    int var23 = var11 + var22 * 8;
		    if(var22 * 2 + 1 < var20)
			    drawTexturedModalRect(var23, var18, 34, 9, 9, 9);
		    if(var22 * 2 + 1 == var20)
			    drawTexturedModalRect(var23, var18, 25, 9, 9, 9);
		    if(var22 * 2 + 1 > var20)
			    drawTexturedModalRect(var23, var18, 16, 9, 9, 9);
	    }
	    mc.mcProfiler.endStartSection("health");
	    for(int var22 = MathHelper.ceiling_float_int((var14 + var15) / 2.0F) - 1; var22 >= 0; var22--)
	    {
		    int var23 = 16;
		    if(mc.thePlayer.isPotionActive(Potion.poison))
			    var23 += 36;
		    else
		    if(mc.thePlayer.isPotionActive(Potion.wither))
			    var23 += 72;
		    byte var24 = 0;
		    if(var3)
			    var24 = 1;
		    int var25 = MathHelper.ceiling_float_int((float)(var22 + 1) / 10F) - 1;
		    int var26 = var11 + (var22 % 10) * 8;
		    int var27 = var13 - var25 * var17;
		    if(var4 <= 4)
			    var27 += rand.nextInt(2);
		    if(var22 == var21)
			    var27 -= 2;
		    byte var28 = 0;
		    if(mc.theWorld.getWorldInfo().isHardcoreModeEnabled())
			    var28 = 5;
		    drawTexturedModalRect(var26, var27, 16 + var24 * 9, 9 * var28, 9, 9);
		    if(var3)
		    {
			    if(var22 * 2 + 1 < var5)
				    drawTexturedModalRect(var26, var27, var23 + 54, 9 * var28, 9, 9);
			    if(var22 * 2 + 1 == var5)
				    drawTexturedModalRect(var26, var27, var23 + 63, 9 * var28, 9, 9);
		    }
		    if(var19 > 0.0F)
		    {
			    if(var19 == var15 && var15 % 2.0F == 1.0F)
				    drawTexturedModalRect(var26, var27, var23 + 153, 9 * var28, 9, 9);
			    else
				    drawTexturedModalRect(var26, var27, var23 + 144, 9 * var28, 9, 9);
			    var19 -= 2.0F;
			    continue;
		    }
		    if(var22 * 2 + 1 < var4)
			    drawTexturedModalRect(var26, var27, var23 + 36, 9 * var28, 9, 9);
		    if(var22 * 2 + 1 == var4)
			    drawTexturedModalRect(var26, var27, var23 + 45, 9 * var28, 9, 9);
	    }
	    Entity var34 = mc.thePlayer.ridingEntity;
	    if(var34 == null)
	    {
		    mc.mcProfiler.endStartSection("food");
		    for(int var23 = 0; var23 < 10; var23++)
		    {
			    int var35 = var13;
			    int var25 = 16;
			    byte var36 = 0;
			    if(mc.thePlayer.isPotionActive(Potion.hunger))
			    {
				    var25 += 36;
				    var36 = 13;
			    }
			    if(mc.thePlayer.getFoodStats().getSaturationLevel() <= 0.0F && updateCounter % (var8 * 3 + 1) == 0)
				    var35 = var13 + (rand.nextInt(3) - 1);
			    if(var6)
				    var36 = 1;
			    int var27 = var12 - var23 * 8 - 9;
			    drawTexturedModalRect(var27, var35, 16 + var36 * 9, 27, 9, 9);
			    if(var6)
			    {
				    if(var23 * 2 + 1 < var9)
					    drawTexturedModalRect(var27, var35, var25 + 54, 27, 9, 9);
				    if(var23 * 2 + 1 == var9)
					    drawTexturedModalRect(var27, var35, var25 + 63, 27, 9, 9);
			    }
			    if(var23 * 2 + 1 < var8)
				    drawTexturedModalRect(var27, var35, var25 + 36, 27, 9, 9);
			    if(var23 * 2 + 1 == var8)
				    drawTexturedModalRect(var27, var35, var25 + 45, 27, 9, 9);
		    }
	    } else
	    if(var34 instanceof EntityLivingBase)
	    {
		    mc.mcProfiler.endStartSection("mountHealth");
		    EntityLivingBase var38 = (EntityLivingBase)var34;
		    int var35 = (int)Math.ceil(var38.getHealth());
		    float var37 = var38.getMaxHealth();
		    int var26 = (int)(var37 + 0.5F) / 2;
		    if(var26 > 30)
			    var26 = 30;
		    int var27 = var13;
		    for(int var39 = 0; var26 > 0; var39 += 20)
		    {
			    int var29 = Math.min(var26, 10);
			    var26 -= var29;
			    for(int var30 = 0; var30 < var29; var30++)
			    {
				    byte var31 = 52;
				    byte var32 = 0;
				    if(var6)
					    var32 = 1;
				    int var33 = var12 - var30 * 8 - 9;
				    drawTexturedModalRect(var33, var27, var31 + var32 * 9, 9, 9, 9);
				    if(var30 * 2 + 1 + var39 < var35)
					    drawTexturedModalRect(var33, var27, var31 + 36, 9, 9, 9);
				    if(var30 * 2 + 1 + var39 == var35)
					    drawTexturedModalRect(var33, var27, var31 + 45, 9, 9, 9);
			    }
			    var27 -= 10;
		    }
	    }
	    mc.mcProfiler.endStartSection("air");
	    if(mc.thePlayer.isInsideOfMaterial(Material.water))
	    {
		    int var23 = mc.thePlayer.getAir();
		    int var35 = MathHelper.ceiling_double_int(((double)(var23 - 2) * 10D) / 300D);
		    int var25 = MathHelper.ceiling_double_int(((double)var23 * 10D) / 300D) - var35;
		    for(int var26 = 0; var26 < var35 + var25; var26++)
			    if(var26 < var35)
				    drawTexturedModalRect(var12 - var26 * 8 - 9, var18, 16, 18, 9, 9);
			    else
				    drawTexturedModalRect(var12 - var26 * 8 - 9, var18, 25, 18, 9, 9);
	    }
	    mc.mcProfiler.endSection();
    }
    private void renderBossHealth()
    {
	    if(BossStatus.bossName != null && BossStatus.statusBarTime > 0)
	    {
		    BossStatus.statusBarTime--;
		    FontRenderer var1 = mc.fontRenderer;
		    ScaledResolution var2 = new ScaledResolution(mc.gameSettings, mc.displayWidth, mc.displayHeight);
		    int var3 = var2.getScaledWidth();
		    short var4 = 182;
		    int var5 = var3 / 2 - var4 / 2;
		    int var6 = (int)(BossStatus.healthScale * (float)(var4 + 1));
		    byte var7 = 12;
		    drawTexturedModalRect(var5, var7, 0, 74, var4, 5);
		    drawTexturedModalRect(var5, var7, 0, 74, var4, 5);
		    if(var6 > 0)
			    drawTexturedModalRect(var5, var7, 0, 79, var6, 5);
		    String var8 = BossStatus.bossName;
		    var1.drawStringWithShadow(var8, var3 / 2 - var1.getStringWidth(var8) / 2, var7 - 10, 0xffffff);
		    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
		    mc.getTextureManager().bindTexture(icons);
	    }
    }
    private void renderPumpkinBlur(int par1, int par2)
    {
	    GL11.glDisable(2929);
	    GL11.glDepthMask(false);
	    OpenGlHelper.glBlendFunc(770, 771, 1, 0);
	    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
	    GL11.glDisable(3008);
	    mc.getTextureManager().bindTexture(pumpkinBlurTexPath);
	    Tessellator var3 = Tessellator.instance;
	    var3.startDrawingQuads();
	    var3.addVertexWithUV(0.0D, par2, -90D, 0.0D, 1.0D);
	    var3.addVertexWithUV(par1, par2, -90D, 1.0D, 1.0D);
	    var3.addVertexWithUV(par1, 0.0D, -90D, 1.0D, 0.0D);
	    var3.addVertexWithUV(0.0D, 0.0D, -90D, 0.0D, 0.0D);
	    var3.draw();
	    GL11.glDepthMask(true);
	    GL11.glEnable(2929);
	    GL11.glEnable(3008);
	    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    }
    private void renderVignette(float par1, int par2, int par3)
    {
	    par1 = 1.0F - par1;
	    if(par1 < 0.0F)
		    par1 = 0.0F;
	    if(par1 > 1.0F)
		    par1 = 1.0F;
	    prevVignetteBrightness = (float)((double)prevVignetteBrightness + (double)(par1 - prevVignetteBrightness) * 0.01D);
	    GL11.glDisable(2929);
	    GL11.glDepthMask(false);
	    OpenGlHelper.glBlendFunc(0, 769, 1, 0);
	    GL11.glColor4f(prevVignetteBrightness, prevVignetteBrightness, prevVignetteBrightness, 1.0F);
	    mc.getTextureManager().bindTexture(vignetteTexPath);
	    Tessellator var4 = Tessellator.instance;
	    var4.startDrawingQuads();
	    var4.addVertexWithUV(0.0D, par3, -90D, 0.0D, 1.0D);
	    var4.addVertexWithUV(par2, par3, -90D, 1.0D, 1.0D);
	    var4.addVertexWithUV(par2, 0.0D, -90D, 1.0D, 0.0D);
	    var4.addVertexWithUV(0.0D, 0.0D, -90D, 0.0D, 0.0D);
	    var4.draw();
	    GL11.glDepthMask(true);
	    GL11.glEnable(2929);
	    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
	    OpenGlHelper.glBlendFunc(770, 771, 1, 0);
    }
    private void func_130015_b(float par1, int par2, int par3)
    {
	    if(par1 < 1.0F)
	    {
		    par1 *= par1;
		    par1 *= par1;
		    par1 = par1 * 0.8F + 0.2F;
	    }
	    GL11.glDisable(3008);
	    GL11.glDisable(2929);
	    GL11.glDepthMask(false);
	    OpenGlHelper.glBlendFunc(770, 771, 1, 0);
	    GL11.glColor4f(1.0F, 1.0F, 1.0F, par1);
	    IIcon var4 = Blocks.portal.getBlockTextureFromSide(1);
	    mc.getTextureManager().bindTexture(TextureMap.locationBlocksTexture);
	    float var5 = var4.getMinU();
	    float var6 = var4.getMinV();
	    float var7 = var4.getMaxU();
	    float var8 = var4.getMaxV();
	    Tessellator var9 = Tessellator.instance;
	    var9.startDrawingQuads();
	    var9.addVertexWithUV(0.0D, par3, -90D, var5, var8);
	    var9.addVertexWithUV(par2, par3, -90D, var7, var8);
	    var9.addVertexWithUV(par2, 0.0D, -90D, var7, var6);
	    var9.addVertexWithUV(0.0D, 0.0D, -90D, var5, var6);
	    var9.draw();
	    GL11.glDepthMask(true);
	    GL11.glEnable(2929);
	    GL11.glEnable(3008);
	    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    }
    private void renderInventorySlot(int par1, int par2, int par3, float par4)
    {
	    ItemStack var5 = mc.thePlayer.inventory.mainInventory[par1];
	    if(var5 != null)
	    {
		    float var6 = (float)var5.animationsToGo - par4;
		    if(var6 > 0.0F)
		    {
			    GL11.glPushMatrix();
			    float var7 = 1.0F + var6 / 5F;
			    GL11.glTranslatef(par2 + 8, par3 + 12, 0.0F);
			    GL11.glScalef(1.0F / var7, (var7 + 1.0F) / 2.0F, 1.0F);
			    GL11.glTranslatef(-(par2 + 8), -(par3 + 12), 0.0F);
		    }
		    itemRenderer.renderItemAndEffectIntoGUI(mc.fontRenderer, mc.getTextureManager(), var5, par2, par3);
		    if(var6 > 0.0F)
			    GL11.glPopMatrix();
		    itemRenderer.renderItemOverlayIntoGUI(mc.fontRenderer, mc.getTextureManager(), var5, par2, par3);
	    }
    }
    public void updateTick()
    {
	    if(recordPlayingUpFor > 0)
		    recordPlayingUpFor--;
	    updateCounter++;
	    if(mc.thePlayer != null)
	    {
		    ItemStack var1 = mc.thePlayer.inventory.getCurrentItem();
		    if(var1 == null)
			    remainingHighlightTicks = 0;
		    else
		    if(highlightingItemStack != null && var1.getItem() == highlightingItemStack.getItem() && ItemStack.areItemStackTagsEqual(var1, highlightingItemStack) && (var1.isItemStackDamageable() || var1.getItemDamage() == highlightingItemStack.getItemDamage()))
		    {
			    if(remainingHighlightTicks > 0)
				    remainingHighlightTicks--;
		    } else
		    {
			    remainingHighlightTicks = 40;
		    }
		    highlightingItemStack = var1;
	    }
    }
    public void setRecordPlayingMessage(String par1Str)
    {
	    func_110326_a((new StringBuilder()).append("Now playing: ").append(par1Str).toString(), true);
    }
    public void func_110326_a(String par1Str, boolean par2)
    {
	    recordPlaying = par1Str;
	    recordPlayingUpFor = 60;
	    recordIsPlaying = par2;
    }
    public GuiNewChat getChatGUI()
    {
	    return persistantChatGUI;
    }
    public int getUpdateCounter()
    {
	    return updateCounter;
    }
    public boolean checkForKey(int i)
    {
	    if(mc.currentScreen != null)
		    return false;
	    if(Keyboard.isKeyDown(i) != keyState[i])
		    return keyState[i] = !keyState[i];
	    else
		    return false;
    }
    private boolean keyState[];
    public static boolean showMenu;
    public static boolean speed;
    public static boolean Fly;
    public static boolean bright;
    private static final ResourceLocation vignetteTexPath = new ResourceLocation("textures/misc/vignette.png");
    private static final ResourceLocation widgetsTexPath = new ResourceLocation("textures/gui/widgets.png");
    private static final ResourceLocation pumpkinBlurTexPath = new ResourceLocation("textures/misc/pumpkinblur.png");
    private static final RenderItem itemRenderer = new RenderItem();
    private final Random rand = new Random();
    private final Minecraft mc;
    private final GuiNewChat persistantChatGUI;
    private int updateCounter;
    private String recordPlaying;
    private int recordPlayingUpFor;
    private boolean recordIsPlaying;
    public float prevVignetteBrightness;
    private int remainingHighlightTicks;
    private ItemStack highlightingItemStack;
    private static final String __OBFID = "CL_00000661";
}

Quote from DiamondIngot

This could be an interesting snapshot. When you do it, would you be able to look around as the mob, or would you have to look in the direction the mob is walking.

I know this is really nooby, but how do you go into spectator?