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howto.go
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howto.go
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package main
import (
"strings"
"github.com/nsf/termbox-go"
)
type AttributedText struct {
fg termbox.Attribute
bg termbox.Attribute
s string
}
const (
fgHowto = neonGreen
bgHowto = termbox.ColorBlack
fgHowtoUfo = magenta
bgHowtoUfo = termbox.ColorBlack
fgHowtoControl = magenta
instructionsWPad = 20
instructionsHPad = 2
)
var (
instructions = []AttributedText{
AttributedText{fgHowto, bgHowto, ` xx
xOOx
xxxxxx = 10 pts
/\/\
x x
xxOOxx
xxxx = 20 pts
/ \
xx
xOxxOx
xxxxxx = 30 pts
/||\
`},
AttributedText{fgHowtoUfo, bgHowtoUfo, `
xxxxx
xxoxOxoxx`},
AttributedText{fgHowto, bgHowto, ` = ?? pts`},
AttributedText{fgHowtoUfo, bgHowtoUfo, `
## ##
`},
AttributedText{fgHowtoControl, bgHowto, `Left`},
AttributedText{fgHowto, bgHowto, `/`},
AttributedText{fgHowtoControl, bgHowto, `Right`},
AttributedText{fgHowto, bgHowto, ` Arrow to move.
`},
AttributedText{fgHowtoControl, bgHowto, `Space`},
AttributedText{fgHowto, bgHowto, ` to fire.
Press `},
AttributedText{fgHowtoControl, bgHowto, `q `},
AttributedText{fgHowto, bgHowto, `to quit.
Press `},
AttributedText{fgHowtoControl, bgHowto, `ESC`},
AttributedText{fgHowto, bgHowto, ` to close
this window.`}}
instructionsLines []string
instructionsWidth int
instructionsHeight int
)
func init() {
str := ""
for _, v := range instructions {
str += v.s
}
instructionsLines = strings.Split(str, "\n")
instructionsWidth = len(instructionsLines[2])
instructionsHeight = len(instructionsLines)
}
func (g *Game) DrawHowto() {
g.DrawMenu()
w, h := instructionsWidth+instructionsWPad, instructionsHeight+instructionsHPad
x, y := g.w/2-(instructionsWidth+instructionsWPad)/2, logoY
tbrect(x, y, w, h, fgHowto, bgHowto, true)
x += instructionsWPad / 2
y += instructionsHPad / 2
leftMargin := x
for _, l := range instructions {
for _, c := range l.s {
if c != '\n' {
termbox.SetCell(x, y, c, l.fg, l.bg)
x++
} else {
y++
x = leftMargin
}
}
}
}
func (g *Game) UpdateHowto() {
g.UpdateMenu()
}
func (g *Game) HandleKeyHowto(k termbox.Key) {
switch k {
case termbox.KeyEsc:
g.GoMenu()
g.hmi = Howto
}
}
func (g *Game) GoHowto() {
g.state = HowtoState
g.cfg = fgMenu
g.cbg = bgMenu
}