package com.pahimar.ee3.client.renderer.texturefx;

import net.minecraft.client.renderer.RenderEngine;

import org.lwjgl.opengl.GL11;

import com.pahimar.ee3.block.ModBlocks;
import com.pahimar.ee3.lib.Sprites;

import cpw.mods.fml.client.FMLTextureFX;

/**
 * TextureRedWaterFlowFX
 * 
 * TextureFX for flowing Red Water
 * 
 * @author pahimar
 * @license Lesser GNU Public License v3 (http://www.gnu.org/licenses/lgpl.html)
 * 
 */
public class TextureRedWaterFlowFX extends FMLTextureFX {

    protected float[] red = new float[256];
    protected float[] green = new float[256];
    protected float[] blue = new float[256];
    protected float[] alpha = new float[256];
    private int tickCounter = 0;

    public TextureRedWaterFlowFX() {

        super(ModBlocks.redWaterStill.blockIndexInTexture + 1);
        tileSize = 2;
        setup();
    }

    @Override
    public void setup() {

        super.setup();
        red = new float[tileSizeSquare];
        green = new float[tileSizeSquare];
        blue = new float[tileSizeSquare];
        alpha = new float[tileSizeSquare];
        tickCounter = 0;
    }

    @Override
    public void bindImage(RenderEngine renderEngine) {

        GL11.glBindTexture(GL11.GL_TEXTURE_2D, renderEngine.getTexture(Sprites.SPRITE_SHEET_LOCATION + Sprites.BLOCK_SPRITE_SHEET));
    }

    public void onTick() {

        ++this.tickCounter;
        int var1;
        int var2;
        float var3;
        int var5;
        int var6;

        for (var1 = 0; var1 < tileSizeBase; ++var1) {
            for (var2 = 0; var2 < tileSizeBase; ++var2) {
                var3 = 0.0F;

                for (int var4 = var2 - 2; var4 <= var2; ++var4) {
                    var5 = var1 & tileSizeMask;
                    var6 = var4 & tileSizeMask;
                    var3 += this.red[var5 + var6 * tileSizeBase];
                }

                this.green[var1 + var2 * tileSizeBase] = var3 / 3.2F + this.blue[var1 + var2 * tileSizeBase] * 0.8F;
            }
        }

        for (var1 = 0; var1 < tileSizeBase; ++var1) {
            for (var2 = 0; var2 < tileSizeBase; ++var2) {
                this.blue[var1 + var2 * tileSizeBase] += this.alpha[var1 + var2 * tileSizeBase] * 0.05F;

                if (this.blue[var1 + var2 * tileSizeBase] < 0.0F) {
                    this.blue[var1 + var2 * tileSizeBase] = 0.0F;
                }

                this.alpha[var1 + var2 * tileSizeBase] -= 0.3F;

                if (Math.random() < 0.2D) {
                    this.alpha[var1 + var2 * tileSizeBase] = 0.5F;
                }
            }
        }

        float[] var12 = this.green;
        this.green = this.red;
        this.red = var12;

        for (var2 = 0; var2 < tileSizeSquare; ++var2) {
            var3 = this.red[var2 - this.tickCounter * tileSizeBase & tileSizeSquareMask];

            if (var3 > 1.0F) {
                var3 = 1.0F;
            }

            if (var3 < 0.0F) {
                var3 = 0.0F;
            }

            float var13 = var3 * var3;
            var5 = (int) (32.0F + var13 * 32.0F);
            var6 = (int) (50.0F + var13 * 64.0F);
            int var7 = 255;
            int var8 = (int) (146.0F + var13 * 50.0F);

            if (this.anaglyphEnabled) {
                int var9 = (var5 * 30 + var6 * 59 + var7 * 11) / 100;
                int var10 = (var5 * 30 + var6 * 70) / 100;
                int var11 = (var5 * 30 + var7 * 70) / 100;
                var5 = var9;
                var6 = var10;
                var7 = var11;
            }

            this.imageData[var2 * 4 + 0] = (byte) var5;
            this.imageData[var2 * 4 + 1] = (byte) 0;
            this.imageData[var2 * 4 + 2] = (byte) 0;
            this.imageData[var2 * 4 + 3] = (byte) 192;
        }
    }

}