package net.minecraft.src;

import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL12;

public class RenderWitherSkull extends Render
{
    private static final ResourceLocation invulnerableWitherTextures = new ResourceLocation("textures/entity/wither/wither_invulnerable.png");
    private static final ResourceLocation witherTextures = new ResourceLocation("textures/entity/wither/wither.png");

    /** The Skeleton's head model. */
    private final ModelSkeletonHead skeletonHeadModel = new ModelSkeletonHead();

    private float func_82400_a(float par1, float par2, float par3)
    {
        float var4;

        for (var4 = par2 - par1; var4 < -180.0F; var4 += 360.0F)
        {
            ;
        }

        while (var4 >= 180.0F)
        {
            var4 -= 360.0F;
        }

        return par1 + par3 * var4;
    }

    public void func_82399_a(EntityWitherSkull par1EntityWitherSkull, double par2, double par4, double par6, float par8, float par9)
    {
        GL11.glPushMatrix();
        GL11.glDisable(GL11.GL_CULL_FACE);
        float var10 = this.func_82400_a(par1EntityWitherSkull.prevRotationYaw, par1EntityWitherSkull.rotationYaw, par9);
        float var11 = par1EntityWitherSkull.prevRotationPitch + (par1EntityWitherSkull.rotationPitch - par1EntityWitherSkull.prevRotationPitch) * par9;
        GL11.glTranslatef((float)par2, (float)par4, (float)par6);
        float var12 = 0.0625F;
        GL11.glEnable(GL12.GL_RESCALE_NORMAL);
        GL11.glScalef(-1.0F, -1.0F, 1.0F);
        GL11.glEnable(GL11.GL_ALPHA_TEST);
        this.bindEntityTexture(par1EntityWitherSkull);
        this.skeletonHeadModel.render(par1EntityWitherSkull, 0.0F, 0.0F, 0.0F, var10, var11, var12);
        GL11.glPopMatrix();
    }

    protected ResourceLocation func_110809_a(EntityWitherSkull par1EntityWitherSkull)
    {
        return par1EntityWitherSkull.isInvulnerable() ? invulnerableWitherTextures : witherTextures;
    }

    /**
     * Returns the location of an entity's texture. Doesn't seem to be called unless you call Render.bindEntityTexture.
     */
    protected ResourceLocation getEntityTexture(Entity par1Entity)
    {
        return this.func_110809_a((EntityWitherSkull)par1Entity);
    }

    /**
     * Actually renders the given argument. This is a synthetic bridge method, always casting down its argument and then
     * handing it off to a worker function which does the actual work. In all probabilty, the class Render is generic
     * (Render<T extends Entity) and this method has signature public void doRender(T entity, double d, double d1,
     * double d2, float f, float f1). But JAD is pre 1.5 so doesn't do that.
     */
    public void doRender(Entity par1Entity, double par2, double par4, double par6, float par8, float par9)
    {
        this.func_82399_a((EntityWitherSkull)par1Entity, par2, par4, par6, par8, par9);
    }
}
