Initial commit: Hero is able to move and when clicked we can draw an …

…icon

go.mod

@@ -0,0 +1,15 @@
+module github.com/barisbll/cli-shooter
+
+go 1.20
+
+require github.com/gdamore/tcell/v2 v2.6.0
+
+require (
+	github.com/gdamore/encoding v1.0.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/rivo/uniseg v0.4.4 // indirect
+	golang.org/x/sys v0.12.0 // indirect
+	golang.org/x/term v0.5.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+)

go.sum

@@ -0,0 +1,44 @@
+github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
+github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
+github.com/gdamore/tcell/v2 v2.6.0 h1:OKbluoP9VYmJwZwq/iLb4BxwKcwGthaa1YNBJIyCySg=
+github.com/gdamore/tcell/v2 v2.6.0/go.mod h1:be9omFATkdr0D9qewWW3d+MEvl5dha+Etb5y65J2H8Y=
+github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
+github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
+github.com/mattn/go-runewidth v0.0.14/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
+github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.4.3/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/rivo/uniseg v0.4.4 h1:8TfxU8dW6PdqD27gjM8MVNuicgxIjxpm4K7x4jp8sis=
+github.com/rivo/uniseg v0.4.4/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

hero.go

@@ -0,0 +1,39 @@
+package main
+
+import tcell "github.com/gdamore/tcell/v2"
+
+const HeroEmoji rune = '\U0001F9B8' // 🦸‍♂️
+
+type Hero struct {
+	x     int
+	y     int
+	speed uint8
+}
+
+func (h *Hero) goRight(maxWidth int) {
+	if h.x < maxWidth-2 {
+		h.x += int(h.speed)
+	}
+}
+
+func (h *Hero) goLeft() {
+	if h.x > 0 {
+		h.x -= int(h.speed)
+	}
+}
+
+func (h *Hero) goUp() {
+	if h.y > 0 {
+		h.y -= int(h.speed)
+	}
+}
+
+func (h *Hero) goDown(maxHeight int) {
+	if h.y < maxHeight-1 {
+		h.y += int(h.speed)
+	}
+}
+
+func (h *Hero) draw(s tcell.Screen, style tcell.Style) {
+	s.SetContent(h.x, h.y, HeroEmoji, nil, style)
+}

main.go

@@ -0,0 +1,87 @@
+package main
+
+import (
+	"log"
+
+	tcell "github.com/gdamore/tcell/v2"
+)
+
+func main() {
+	defStyle := tcell.StyleDefault.Background(tcell.ColorReset).Foreground(tcell.ColorReset)
+
+	// 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.EnableMouse()
+	s.EnablePaste()
+	s.Clear()
+	xmax, ymax := s.Size()
+
+	hero := Hero{x: xmax / 2, y: ymax / 2, speed: 1}
+
+	hero.draw(s, defStyle)
+
+	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()
+
+	// Event loop
+	for {
+		// Update screen
+		s.Show()
+
+		// Poll event
+		ev := s.PollEvent()
+
+		// Process event
+		switch ev := ev.(type) {
+		case *tcell.EventResize:
+			s.Sync()
+			xmax, ymax = s.Size()
+		case *tcell.EventKey:
+			// System logic keys
+			if ev.Key() == tcell.KeyEscape || ev.Key() == tcell.KeyCtrlC {
+				return
+			} else if ev.Key() == tcell.KeyCtrlL {
+				s.Sync()
+			} else if ev.Rune() == 'C' || ev.Rune() == 'c' {
+				s.Clear()
+			} else if ev.Key() == tcell.KeyRight || ev.Rune() == 'D' || ev.Rune() == 'd' {
+				hero.goRight(xmax)
+				s.Clear()
+			} else if ev.Key() == tcell.KeyLeft || ev.Rune() == 'A' || ev.Rune() == 'a' {
+				hero.goLeft()
+				s.Clear()
+			} else if ev.Key() == tcell.KeyUp || ev.Rune() == 'W' || ev.Rune() == 'w' {
+				hero.goUp()
+				s.Clear()
+			} else if ev.Key() == tcell.KeyDown || ev.Rune() == 'S' || ev.Rune() == 's' {
+				hero.goDown(ymax)
+				s.Clear()
+			}
+		case *tcell.EventMouse:
+			x, y := ev.Position()
+
+			switch ev.Buttons() {
+			case tcell.Button1, tcell.Button2:
+				s.SetContent(x, y, '💥', nil, defStyle)
+			}
+		}
+
+		hero.draw(s, defStyle)
+	}
+}