001package net.minecraft.client.particle;
002
003import cpw.mods.fml.relauncher.Side;
004import cpw.mods.fml.relauncher.SideOnly;
005import net.minecraft.client.renderer.RenderEngine;
006import net.minecraft.client.renderer.Tessellator;
007import net.minecraft.util.MathHelper;
008import net.minecraft.world.World;
009import org.lwjgl.opengl.GL11;
010
011@SideOnly(Side.CLIENT)
012public class EntityFootStepFX extends EntityFX
013{
014    private int field_70576_a = 0;
015    private int field_70578_aq = 0;
016    private RenderEngine currentFootSteps;
017
018    public EntityFootStepFX(RenderEngine par1RenderEngine, World par2World, double par3, double par5, double par7)
019    {
020        super(par2World, par3, par5, par7, 0.0D, 0.0D, 0.0D);
021        this.currentFootSteps = par1RenderEngine;
022        this.motionX = this.motionY = this.motionZ = 0.0D;
023        this.field_70578_aq = 200;
024    }
025
026    public void renderParticle(Tessellator par1Tessellator, float par2, float par3, float par4, float par5, float par6, float par7)
027    {
028        float f6 = ((float)this.field_70576_a + par2) / (float)this.field_70578_aq;
029        f6 *= f6;
030        float f7 = 2.0F - f6 * 2.0F;
031
032        if (f7 > 1.0F)
033        {
034            f7 = 1.0F;
035        }
036
037        f7 *= 0.2F;
038        GL11.glDisable(GL11.GL_LIGHTING);
039        float f8 = 0.125F;
040        float f9 = (float)(this.posX - interpPosX);
041        float f10 = (float)(this.posY - interpPosY);
042        float f11 = (float)(this.posZ - interpPosZ);
043        float f12 = this.worldObj.getLightBrightness(MathHelper.floor_double(this.posX), MathHelper.floor_double(this.posY), MathHelper.floor_double(this.posZ));
044        this.currentFootSteps.func_98187_b("/misc/footprint.png");
045        GL11.glEnable(GL11.GL_BLEND);
046        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
047        par1Tessellator.startDrawingQuads();
048        par1Tessellator.setColorRGBA_F(f12, f12, f12, f7);
049        par1Tessellator.addVertexWithUV((double)(f9 - f8), (double)f10, (double)(f11 + f8), 0.0D, 1.0D);
050        par1Tessellator.addVertexWithUV((double)(f9 + f8), (double)f10, (double)(f11 + f8), 1.0D, 1.0D);
051        par1Tessellator.addVertexWithUV((double)(f9 + f8), (double)f10, (double)(f11 - f8), 1.0D, 0.0D);
052        par1Tessellator.addVertexWithUV((double)(f9 - f8), (double)f10, (double)(f11 - f8), 0.0D, 0.0D);
053        par1Tessellator.draw();
054        GL11.glDisable(GL11.GL_BLEND);
055        GL11.glEnable(GL11.GL_LIGHTING);
056    }
057
058    /**
059     * Called to update the entity's position/logic.
060     */
061    public void onUpdate()
062    {
063        ++this.field_70576_a;
064
065        if (this.field_70576_a == this.field_70578_aq)
066        {
067            this.setDead();
068        }
069    }
070
071    public int getFXLayer()
072    {
073        return 3;
074    }
075}