Revise paste drawEntityOnScreen

/**
     * Draws the entity to the screen. Args: xPos, yPos, scale, mouseX, mouseY, entityLiving
     */
    public static void drawEntityOnScreen(int posX, int posY, int scale, float mouseX, float mouseY, EntityLivingBase ent)
    {
        GlStateManager.enableDepth();
        GlStateManager.enableColorMaterial();
        GlStateManager.pushMatrix();
        GlStateManager.translate((float)posX, (float)posY, 50.0F);
        GlStateManager.scale((float)(-scale), (float)scale, (float)scale);
        GlStateManager.rotate(180.0F, 0.0F, 0.0F, 1.0F);
        float f = ent.renderYawOffset;
        float f1 = ent.rotationYaw;
        float f2 = ent.rotationPitch;
        float f3 = ent.prevRotationYawHead;
        float f4 = ent.rotationYawHead;

final float beforeYaw = PlayerHandler.yaw;
        final float beforePitch = PlayerHandler.pitch;
        final float beforePrevPitch = PlayerHandler.prevPitch;

GlStateManager.rotate(135.0F, 0.0F, 1.0F, 0.0F);
        RenderHelper.enableStandardItemLighting();
        GlStateManager.rotate(-135.0F, 0.0F, 1.0F, 0.0F);
        GlStateManager.rotate(-((float)Math.atan((double)(mouseY / 40.0F))) * 20.0F, 1.0F, 0.0F, 0.0F);
        ent.renderYawOffset = (float)Math.atan((double)(mouseX / 40.0F)) * 20.0F;
        ent.rotationYaw = (float)Math.atan((double)(mouseX / 40.0F)) * 40.0F;
        ent.rotationPitch = -((float)Math.atan((double)(mouseY / 40.0F))) * 20.0F;
        ent.rotationYawHead = ent.rotationYaw;
        ent.prevRotationYawHead = ent.rotationYaw;
        if(ent == Minecraft.getMinecraft().thePlayer) {
            PlayerHandler.yaw = ent.rotationYawHead;
            PlayerHandler.pitch = ent.rotationPitch;
            PlayerHandler.prevPitch = ent.prevRotationPitch;
        }
        GlStateManager.translate(0.0F, 0.0F, 0.0F);
        RenderManager rendermanager = Minecraft.getMinecraft().getRenderManager();
        rendermanager.setPlayerViewY(180.0F);
        rendermanager.setRenderShadow(false);
        rendermanager.renderEntityWithPosYaw(ent, 0.0D, 0.0D, 0.0D, 0.0F, 1.0F);
        rendermanager.setRenderShadow(true);
        ent.renderYawOffset = f;
        ent.rotationYaw = f1;
        ent.rotationPitch = f2;
        ent.prevRotationYawHead = f3;
        ent.rotationYawHead = f4;
        if(ent == Minecraft.getMinecraft().thePlayer) {
            PlayerHandler.yaw = beforeYaw;
            PlayerHandler.pitch = beforePitch;
            PlayerHandler.prevPitch = beforePrevPitch;
        }
        GlStateManager.popMatrix();
        RenderHelper.disableStandardItemLighting();
        GlStateManager.disableRescaleNormal();
        GlStateManager.setActiveTexture(OpenGlHelper.lightmapTexUnit);
        GlStateManager.disableTexture2D();
        GlStateManager.setActiveTexture(OpenGlHelper.defaultTexUnit);
    }