Matrix/main.go

package main

import (
	"fmt"
	"log"

	"github.com/go-resty/resty/v2"
	"github.com/joho/godotenv"
)

func output(client *resty.Client, url string, width, height int, arr [][]Cell) {
	// Prepare instructions for matrix
	instructions := make([]interface{}, 0)
	// Append all live cells as pixel instructions
	for i := 0; i < width; i++ {
		for j := 0; j < height; j++ {
			if arr[i][j].live {
				instructions = append(instructions, Pixel{X: i, Y: j, Endpoint: PIXEL})
			}
		}
	}
	// Append update instruction
	instructions = append(instructions, Update{Endpoint: UPDATE})
	// Send to matrix
	sendRequest(client, url, instructions)
}

func main() {
	// Load .env file if it exists
	err := godotenv.Load(".env")
	if err != nil {
		log.Fatal("Error loading .env file")
	}

	// Load env server data
	url, width, height := loadMatrixData()
	log.Printf("At '%s': %d x %d\n", url, width, height)

	// Initialize resty client
	client := resty.New()
	// Initialize pixel color
	sendRequest(client, url, []interface{}{Color{R: 255, G: 255, B: 255, Endpoint: COLOR}})

	// Run Game of Life
	done := setup(func(c [][]Cell) {
		output(client, url, width, height, c)
	}, width, height, 5)

	// Wait for user input to quit
	fmt.Scanln()
	// Stop Game of Life, wait for routine
	done <- true
}