snake/game.go

114 lines
2.4 KiB
Go

package main
import (
"fmt"
"log"
"strconv"
"github.com/gdamore/tcell/v2"
)
func updateScore(screen tcell.Screen, style tcell.Style, score int) {
var x, y int
_, y = screen.Size()
x = 5
for _, r := range []rune("[ Score: " + strconv.FormatInt(int64(score), 10) + " ]") {
screen.SetContent(x, y-1, r, nil, style)
x++
}
}
func drawBox(s tcell.Screen, x1, y1, x2, y2 int, style tcell.Style) {
if y2 < y1 {
y1, y2 = y2, y1
}
if x2 < x1 {
x1, x2 = x2, x1
}
// Fill background
for row := y1; row <= y2; row++ {
for col := x1; col <= x2; col++ {
s.SetContent(col, row, ' ', nil, style)
}
}
// Draw borders
for col := x1; col <= x2; col++ {
s.SetContent(col, y1, '═', nil, style)
s.SetContent(col, y2, '═', nil, style)
}
for row := y1 + 1; row < y2; row++ {
s.SetContent(x1, row, '║', nil, style)
s.SetContent(x2, row, '║', nil, style)
}
// Only draw corners if necessary
if y1 != y2 && x1 != x2 {
s.SetContent(x1, y1, '╔', nil, style)
s.SetContent(x2, y1, '╗', nil, style)
s.SetContent(x1, y2, '╚', nil, style)
s.SetContent(x2, y2, '╝', nil, style)
}
//drawText(s, x1+1, y1+1, x2-1, y2-1, style, text)
updateScore(s, style, 10)
}
func main() {
defaultStyle := tcell.StyleDefault.Background(tcell.ColorReset).Foreground(tcell.ColorReset)
var err error
screen, err := tcell.NewScreen()
if err != nil {
log.Println("Error creating screen: ", err)
}
err = screen.Init()
if err != nil {
log.Fatalln("Error initializing screen: ", err)
}
x, y := screen.Size()
screen.Clear()
drawBox(screen, 0, 0, x-1, y-1, defaultStyle)
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()
screen.Fini()
if maybePanic != nil {
panic(maybePanic)
}
}
defer quit()
for {
screen.Show()
ev := screen.PollEvent()
switch ev := ev.(type) {
case *tcell.EventResize:
x, y := screen.Size()
drawBox(screen, 0, 0, x-1, y-1, defaultStyle)
fmt.Println("size=ok:", checkSize(screen))
screen.Sync()
case *tcell.EventKey:
//fmt.Println("Key: ",ev.Rune())
if ev.Key() == tcell.KeyEscape || ev.Key() == tcell.KeyCtrlC {
return
} else if ev.Rune() == 'q' || ev.Rune() == 'Q' {
return
} else if ev.Key() == tcell.KeyCtrlL {
screen.Sync()
} else if ev.Rune() == 'C' || ev.Rune() == 'c' {
screen.Clear()
}
}
}
}