TinkersConstruct/tconstruct/client/entity/projectile/LaunchedItemRender.java

package tconstruct.client.entity.projectile;

import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.entity.Render;
import net.minecraft.client.renderer.texture.TextureMap;
import net.minecraft.entity.Entity;
import net.minecraft.item.Item;
import net.minecraft.item.ItemPotion;
import net.minecraft.potion.PotionHelper;
import net.minecraft.util.Icon;
import net.minecraft.util.ResourceLocation;

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

import tconstruct.entity.projectile.LaunchedPotion;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

@SideOnly(Side.CLIENT)
public class LaunchedItemRender extends Render
{
    private Item field_94151_a;
    private int field_94150_f;

    public LaunchedItemRender(Item par1Item, int par2)
    {
        this.field_94151_a = par1Item;
        this.field_94150_f = par2;
    }

    public LaunchedItemRender(Item par1Item)
    {
        this(par1Item, 0);
    }

    /**
     * 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)
    {
        Icon icon = this.field_94151_a.getIconFromDamage(this.field_94150_f);

        if (icon != null)
        {
            GL11.glPushMatrix();
            GL11.glTranslatef((float)par2, (float)par4, (float)par6);
            GL11.glEnable(GL12.GL_RESCALE_NORMAL);
            GL11.glScalef(0.5F, 0.5F, 0.5F);
            this.func_110777_b(par1Entity);
            Tessellator tessellator = Tessellator.instance;

            if (icon == ItemPotion.func_94589_d("bottle_splash"))
            {
                int i = PotionHelper.func_77915_a(((LaunchedPotion)par1Entity).getPotionDamage(), false);
                float f2 = (float)(i >> 16 & 255) / 255.0F;
                float f3 = (float)(i >> 8 & 255) / 255.0F;
                float f4 = (float)(i & 255) / 255.0F;
                GL11.glColor3f(f2, f3, f4);
                GL11.glPushMatrix();
                this.func_77026_a(tessellator, ItemPotion.func_94589_d("overlay"));
                GL11.glPopMatrix();
                GL11.glColor3f(1.0F, 1.0F, 1.0F);
            }

            this.func_77026_a(tessellator, icon);
            GL11.glDisable(GL12.GL_RESCALE_NORMAL);
            GL11.glPopMatrix();
        }
    }

    protected ResourceLocation func_110775_a(Entity par1Entity)
    {
        return TextureMap.field_110576_c;
    }

    private void func_77026_a(Tessellator par1Tessellator, Icon par2Icon)
    {
        float f = par2Icon.getMinU();
        float f1 = par2Icon.getMaxU();
        float f2 = par2Icon.getMinV();
        float f3 = par2Icon.getMaxV();
        float f4 = 1.0F;
        float f5 = 0.5F;
        float f6 = 0.25F;
        GL11.glRotatef(180.0F - this.renderManager.playerViewY, 0.0F, 1.0F, 0.0F);
        GL11.glRotatef(-this.renderManager.playerViewX, 1.0F, 0.0F, 0.0F);
        par1Tessellator.startDrawingQuads();
        par1Tessellator.setNormal(0.0F, 1.0F, 0.0F);
        par1Tessellator.addVertexWithUV((double)(0.0F - f5), (double)(0.0F - f6), 0.0D, (double)f, (double)f3);
        par1Tessellator.addVertexWithUV((double)(f4 - f5), (double)(0.0F - f6), 0.0D, (double)f1, (double)f3);
        par1Tessellator.addVertexWithUV((double)(f4 - f5), (double)(f4 - f6), 0.0D, (double)f1, (double)f2);
        par1Tessellator.addVertexWithUV((double)(0.0F - f5), (double)(f4 - f6), 0.0D, (double)f, (double)f2);
        par1Tessellator.draw();
    }
}