package de.krokoyt.fa.particles;

import com.mojang.blaze3d.platform.GlStateManager;

import net.minecraft.client.Minecraft;
import net.minecraft.client.particle.IParticleFactory;
import net.minecraft.client.particle.IParticleRenderType;
import net.minecraft.client.particle.Particle;
import net.minecraft.client.renderer.ActiveRenderInfo;
import net.minecraft.client.renderer.BufferBuilder;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.texture.TextureManager;
import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
import net.minecraft.particles.IParticleData;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

public class Footstep extends Particle{

	private static final ResourceLocation FOOTPRINT_TEXTURE = new ResourceLocation("textures/particle/footprint.png");
	 private int footstepAge;
	    private final int footstepMaxAge;
	    private final TextureManager currentFootSteps;

	protected Footstep(TextureManager currentFootStepsIn, World worldIn, double posXIn, double posYIn, double posZIn) {
		super(worldIn, posXIn, posYIn, posZIn);
		this.currentFootSteps = currentFootStepsIn;
        this.motionX = 0.0D;
        this.motionY = 0.0D;
        this.motionZ = 0.0D;
        this.footstepMaxAge = 200;
		// TODO Auto-generated constructor stub
	}

	@Override
	public void renderParticle(BufferBuilder buffer, ActiveRenderInfo entityIn, float partialTicks, float rotationX,
			float rotationZ, float rotationYZ, float rotationXY, float rotationXZ) {

        float f = ((float)this.footstepAge + partialTicks) / (float)this.footstepMaxAge;
        f = f * f;
        float f1 = 2.0F - f * 2.0F;

        if (f1 > 1.0F)
        {
            f1 = 1.0F;
        }

        f1 = f1 * 0.2F;
        GlStateManager.disableLighting();
        float f2 = 0.125F;
        float f3 = (float)(this.posX - interpPosX);
        float f4 = (float)(this.posY - interpPosY);
        float f5 = (float)(this.posZ - interpPosZ);
        float f6 = this.world.getBrightness(new BlockPos(this.posX, this.posY, this.posZ));
        this.currentFootSteps.bindTexture(FOOTPRINT_TEXTURE);
        com.mojang.blaze3d.platform.GlStateManager.enableBlend();
        GlStateManager.blendFunc(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA);
        buffer.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
        buffer.pos((double)(f3 - 0.125F), (double)f4, (double)(f5 + 0.125F)).tex(0.0D, 1.0D).color(f6, f6, f6, f1).endVertex();
        buffer.pos((double)(f3 + 0.125F), (double)f4, (double)(f5 + 0.125F)).tex(1.0D, 1.0D).color(f6, f6, f6, f1).endVertex();
        buffer.pos((double)(f3 + 0.125F), (double)f4, (double)(f5 - 0.125F)).tex(1.0D, 0.0D).color(f6, f6, f6, f1).endVertex();
        buffer.pos((double)(f3 - 0.125F), (double)f4, (double)(f5 - 0.125F)).tex(0.0D, 0.0D).color(f6, f6, f6, f1).endVertex();
        Tessellator.getInstance().draw();
        GlStateManager.disableBlend();
        GlStateManager.enableLighting();

	}

	   public void onUpdate()
	    {
	        ++this.footstepAge;

	        if (this.footstepAge == this.footstepMaxAge)
	        {
	            this.setExpired();
	        }
	    }

	    /**
	     * Retrieve what effect layer (what texture) the particle should be rendered with. 0 for the particle sprite sheet,
	     * 1 for the main Texture atlas, and 3 for a custom texture
	     */
	    public int getFXLayer()
	    {
	        return 3;
	    }



	@Override
	public IParticleRenderType getRenderType() {
		// TODO Auto-generated method stub
		return null;
	}

	@OnlyIn(Dist.CLIENT)
    public static class Factory implements IParticleFactory
        {

		@Override
		public Particle makeParticle(IParticleData typeIn, World worldIn, double x, double y, double z, double xSpeed,
				double ySpeed, double zSpeed) {

	                return new Footstep(Minecraft.getInstance().textureManager, worldIn, x, y, z);


		}

        }

}