Vanilla-adventures/cmd/game/main.go

package main

import (
	"log"
	"strings"

	"github.com/gdamore/tcell/v3"
	"github.com/gdamore/tcell/v3/color"
)

func drawText(s tcell.Screen, x1, y1, x2, y2 int, style tcell.Style, text string) {
	row := y1
	col := x1
	var width int
	for text != "" {
		text, width = s.Put(col, row, text, style)
		col += width
		if col >= x2 {
			row++
			col = x1
		}
		if row > y2 {
			break
		}
		if width == 0 {
			// incomplete grapheme at end of string
			break
		}
	}
}


func main() {
	var title string = `                                                                 

⠀⠀⠀⠀⠀⠀⠀⢠⣿⣿⣦⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣴⣿⣦⡀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⢠⣿⣿⣿⣿⣆⠀⠀⠀⠀⠀⠀⠀⠀⣾⣿⣿⣿⣷⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⢀⣾⣿⣿⣿⣿⣿⡆⠀⠀⠀⠀⠀⠀⣸⣿⣿⣿⣿⣿⡆⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⣾⣿⣿⣿⣿⣿⣿⣿⡀⠀⠀⠀⠀⢀⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⢸⣿⣿⣿⣿⣿⣿⣿⣿⣧⠀⠀⠀⠀⣼⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀
⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣠⣤⣤⣼⣿⣿⣿⣿⣿⣿⣿⣿⣷⠀⠀⠀⠀⠀
⠀⠀⠀⢀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀⠀⠀
⠀⠀⠀⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀⠀⠀
⠀⠀⠀⠘⣿⣿⣿⣿⠟⠁⠀⠀⠀⠹⣿⣿⣿⣿⣿⠟⠁⠀⠀⠹⣿⣿⡿⠀⠀⠀⠀⠀
⠀⠀⠀⠀⣿⣿⣿⡇⠀⠀⠀⢼⣿⠀⢿⣿⣿⣿⣿⠀⣾⣷⠀⠀⢿⣿⣷⠀⠀⠀⠀⠀
⠀⠀⠀⢠⣿⣿⣿⣷⡀⠀⠀⠈⠋⢀⣿⣿⣿⣿⣿⡀⠙⠋⠀⢀⣾⣿⣿⠀⠀⠀⠀⠀
⢀⣀⣀⣀⣿⣿⣿⣿⣿⣶⣶⣶⣶⣿⣿⣿⣿⣾⣿⣷⣦⣤⣴⣿⣿⣿⣿⣤⠤⢤⣤⡄
⠈⠉⠉⢉⣙⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣇⣀⣀⣀⡀⠀
⠐⠚⠋⠉⢀⣬⡿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⣥⣀⡀⠈⠀⠈⠛
⠀⠀⠴⠚⠉⠀⠀⠀⠉⠛⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠛⠋⠁⠀⠀⠀⠉⠛⠢⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⣸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ /$$    /$$                    /$$ /$$ /$$
⠀⠀⠀⠀⠀⠀⠀⠀⣰⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀| $$   | $$                   |__/| $$| $$
⠀⠀⠀⠀⠀⠀⠀⢠⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀| $$   | $$ /$$$$$$  /$$$$$$$  /$$| $$| $$  /$$$$$$ 
⠀⠀⠀⠀⠀⠀⢠⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀|  $$ / $$/|____  $$| $$__  $$| $$| $$| $$ |____  $$
⠀⠀⠀⠀⠀⢠⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀ \  $$ $$/  /$$$$$$$| $$  \ $$| $$| $$| $$  /$$$$$$$
⠀⠀⠀⠀⢠⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⠀⠀⠀⠀⠀⠀⠀⠀⠀  \  $$$/  /$$__  $$| $$  | $$| $$| $$| $$ /$$__  $$
⠀⠀⠀⠀⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡄⠀⠀⠀⠀⠀⠀⠀⠀   \  $/  |  $$$$$$$| $$  | $$| $$| $$| $$|  $$$$$$$
⠀⠀⠀⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀    \_/    \_______/|__/  |__/|__/|__/|__/ \_______/
                                                                                                    
  /$$$$$$        /$$                                 /$$                                            
 /$$__  $$      | $$                                | $$                                            
| $$  \ $$  /$$$$$$$ /$$    /$$ /$$$$$$  /$$$$$$$  /$$$$$$   /$$   /$$  /$$$$$$   /$$$$$$   /$$$$$$$
| $$$$$$$$ /$$__  $$|  $$  /$$//$$__  $$| $$__  $$|_  $$_/  | $$  | $$ /$$__  $$ /$$__  $$ /$$_____/
| $$__  $$| $$  | $$ \  $$/$$/| $$$$$$$$| $$  \ $$  | $$    | $$  | $$| $$  \__/| $$$$$$$$|  $$$$$$ 
| $$  | $$| $$  | $$  \  $$$/ | $$_____/| $$  | $$  | $$ /$$| $$  | $$| $$      | $$_____/ \____  $$
| $$  | $$|  $$$$$$$   \  $/  |  $$$$$$$| $$  | $$  |  $$$$/|  $$$$$$/| $$      |  $$$$$$$ /$$$$$$$/
|__/  |__/ \_______/    \_/    \_______/|__/  |__/   \___/   \______/ |__/       \_______/|_______/ 
`

	lines := strings.Split(title, "\n")
	defStyle := tcell.StyleDefault.Background(color.Reset).Foreground(color.NewHexColor(0xf3e5ab))

	// Initialize screen
	s, err := tcell.NewScreen()
	if err != nil {
		log.Fatalf("%+v", err)
	}
	if err := s.Init(); err != nil {
		log.Fatalf("%+v", err)
	}
	s.SetStyle(defStyle)
	s.Clear()
	
	quit := func() {
		// You have to catch panics in a defer, clean up, and
		// re-raise them - otherwise your application can
		// die without leaving any diagnostic trace.
		maybePanic := recover()
		s.Fini()
		if maybePanic != nil {
			panic(maybePanic)
		}
	}
	defer quit()

	// Here's how to get the screen size when you need it.
	// xmax, ymax := s.Size()

	// Here's an example of how to inject a keystroke where it will
	// be picked up by a future read of the event queue.  Note that
	// care should be used to avoid blocking writes to the queue if
	// this is done from the same thread that is responsible for reading
	// the queue, or else a single-party deadlock might occur.
	// s.EventQ() <- tcell.NewEventKey(tcell.KeyRune, rune('a'), 0)

	// Event loop
	for {
		// Update screen
		s.Show()

		// Poll event (this can be in a select statement as well)
		ev := <-s.EventQ()
		xmax, ymax := s.Size()
		for l:= range lines{
			drawText(s,10, l, xmax, ymax, defStyle, lines[l])
		}
		// Process event
		switch ev := ev.(type) {
		case *tcell.EventResize:
			s.Sync()
		case *tcell.EventKey:
			if ev.Key() == tcell.KeyEscape || ev.Key() == tcell.KeyCtrlC {
				return
			} else if ev.Key() == tcell.KeyCtrlL {
				s.Sync()
			}
		}
	}
}