feat: selected piece movement

board.go

@@ -32,6 +32,10 @@ func (b *Board) Move(from, to position) {
 	if p == nil {
 		return
 	}
+	cp := b.Grid[to[0]-1][to[1]-1]
+	if cp != nil {
+		// TODO: Capture
+	}
 	b.Grid[from[0]-1][from[1]-1] = nil
 	b.Grid[to[0]-1][to[1]-1] = p
 	p.Position = to

main.go

@@ -38,16 +38,21 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		case "ctrl+c", "q":
 			return m, tea.Quit
 		case "esc":
+			if m.Move.From[0] > 0 && m.Move.From[1] > 0 {
+				m.Board.Grid[m.Move.From[0]-1][m.Move.From[1]-1].Selected = false
+			}
 			m.Move.From, m.Move.To = position{}, position{}
 		case "1", "2", "3", "4", "5", "6", "7", "8":
 			i, _ := strconv.Atoi(msg.String())
 			// `From` and `To` moves will be complete, perform move
 			if m.Move.To[1] > 0 {
 				m.Move.To[0] = i
+				m.Board.Grid[m.Move.From[0]-1][m.Move.From[1]-1].Selected = false
 				m.Board.Move(m.Move.From, m.Move.To)
 				m.Move.From, m.Move.To = position{}, position{}
 			} else {
 				m.Move.From[0] = i
+				m.Board.Grid[i-1][m.Move.From[1]-1].Selected = true
 			}
 			return m, nil
 		case "a", "b", "c", "d", "e", "f", "g", "h",
@@ -71,7 +76,5 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 }
 
 func (m model) View() string {
-	return m.Board.String() + "\n\n" +
-		m.Move.From.String() + " " +
-		m.Move.To.String()
+	return m.Board.String() + "\n"
 }

piece.go

@@ -52,10 +52,13 @@ type Piece struct {
 	Type     piece
 	Color    color
 	Position position
-	Active   bool
+	Selected bool
 }
 
 func (p Piece) String() string {
+	if p.Selected {
+		return activeStyle.Render(pieces[p.Type])
+	}
 	if p.Color == Black {
 		return faintStyle.Render(pieces[p.Type])
 	}

style.go

@@ -2,4 +2,7 @@ package main
 
 import "github.com/charmbracelet/lipgloss"
 
-var faintStyle = lipgloss.NewStyle().Faint(true)
+var (
+	activeStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("#E8B4BC"))
+	faintStyle  = lipgloss.NewStyle().Faint(true)
+)