package io.github.phantamanta44.pcrossbow.client.fx;

import net.minecraft.client.particle.EntityFX;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.util.Vec3;
import net.minecraft.world.World;
import org.lwjgl.opengl.GL11;

public class EntityLaser extends EntityFX {

    private final Vec3 dir;
    private final double length;
    private final double intensity;
    private final int colour;

    public EntityLaser(World world, Vec3 start, Vec3 end, double intensity, int colour) {
        super(world, start.xCoord, start.yCoord, start.zCoord);
        dir = end.subtract(start).normalize();
        length = start.distanceTo(end);
        this.intensity = intensity;
        this.colour = colour;
        this.particleMaxAge = 5;
    }

    @Override
    public int getFXLayer() {
        return 1;
    }

    @Override
    public void renderParticle(Tessellator tess, float partialTick, float rotX, float rotXZ, float rotZ, float rotYZ, float rotXY) {
        tess.draw();

        GL11.glDisable(GL11.GL_TEXTURE_2D);
        GL11.glDisable(GL11.GL_LIGHTING);
        GL11.glEnable(GL11.GL_BLEND);
        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE);

        tess.startDrawingQuads();

        GL11.glPushMatrix();
        GL11.glTranslated(0.5, 0.5, 0.5);
        GL11.glTranslated(
                this.prevPosX + (this.posX - this.prevPosX) * (double)partialTick - interpPosX,
                this.prevPosY + (this.posY - this.prevPosY) * (double)partialTick - interpPosY,
                this.prevPosZ + (this.posZ - this.prevPosZ) * (double)partialTick - interpPosZ);
        GL11.glRotated(90 + Math.atan2(dir.zCoord, dir.xCoord) * 180 / Math.PI, 0, 1, 0);
        GL11.glRotated(Math.atan2(dir.yCoord, dir.zCoord) * 180 / Math.PI, 1, 0, 0);

        tess.setColorRGBA_I(colour, 40);

        double lx = -0.125, ly = -0.125, lz = 0;
        double hx = 0.125, hy = 0.125, hz = length;

        tess.addVertex(hx, hy, hz);
        tess.addVertex(hx, ly, hz);
        tess.addVertex(hx, ly, lz);
        tess.addVertex(hx, hy, lz);

        tess.addVertex(lx, hy, lz);
        tess.addVertex(lx, ly, lz);
        tess.addVertex(lx, ly, hz);
        tess.addVertex(lx, hy, hz);

        tess.addVertex(hx, hy, lz);
        tess.addVertex(lx, hy, lz);
        tess.addVertex(lx, hy, hz);
        tess.addVertex(hx, hy, hz);

        tess.addVertex(hx, ly, hz);
        tess.addVertex(lx, ly, hz);
        tess.addVertex(lx, ly, lz);
        tess.addVertex(hx, ly, lz);

        tess.addVertex(hx, hy, hz);
        tess.addVertex(lx, hy, hz);
        tess.addVertex(lx, ly, hz);
        tess.addVertex(hx, ly, hz);

        tess.draw();

        GL11.glPopMatrix();
        GL11.glDisable(GL11.GL_BLEND);
        GL11.glEnable(GL11.GL_LIGHTING);
        GL11.glEnable(GL11.GL_TEXTURE_2D);

        tess.startDrawingQuads();
    }

}