package main

import (
	"math/rand"
	"git.jcg.re/jcgruenhage/pixclient"
	"net"
)

func main() {
	x, y := 1920, 1200
	client := pixclient.Init(net.IPv4(94, 45, 231, 39), 1234)
	currentX := rand.Intn(x)
	currentY := rand.Intn(y)
	r, g, b := byte(255), byte(0), byte(0)
	counter := 0
	for true {
		direction := rand.Intn(4)
		for ((currentX == x-1) && (direction == 1)) || ((currentX == 0) && (direction == 3)) || ((currentY == y-1) && (direction == 2)) || ((currentY == 0) && (direction == 0)) {
			direction = rand.Intn(4)
		}
		if direction == 0 {
			currentY--
		} else if direction == 1 {
			currentX++
		} else if direction == 2 {
			currentY++
		} else if direction == 3 {
			currentX--
		} else {
			panic("Illegal Direction!")
		}
		if counter%500 == 0 {
			iterateColor(&r, &g, &b)
		}
		client.WritePixel(currentX, currentY, r, g, b, 255)
		counter++
	}
}
func iterateColor(r, g, b *byte) {
	if *r == 255 {
		if *b != 0 {
			*b--
		} else if *g != 255 {
			*g++
		} else {
			*r--
		}
	} else if *g == 255 {
		if *r != 0 {
			*r--
		} else if *b != 255 {
			*b++
		} else {
			*g--
		}
	} else if *b == 255 {
		if *g != 0 {
			*g--
		} else if *r != 255 {
			*r++
		} else {
			*b--

		}
	} else {
		panic("Illegal state")
	}
}