players can send each other chat messages

internal/app/chat_view.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/gdamore/tcell/v2"
 	"github.com/jordanorelli/astro-domu/internal/math"
+	"github.com/jordanorelli/astro-domu/internal/sim"
 	"github.com/jordanorelli/blammo"
 )
 
@@ -12,6 +13,7 @@ type chatView struct {
 	*blammo.Log
 	composing string
 	inFocus   bool
+	history   []sim.ChatMessage
 }
 
 func (c *chatView) handleEvent(ui *UI, e tcell.Event) bool {
@@ -28,6 +30,13 @@ func (c *chatView) handleEvent(ui *UI, e tcell.Event) bool {
 			break
 		}
 
+		if key == tcell.KeyEnter {
+			// ugh lol
+			go ui.client.Send(sim.SendChatMessage{Text: c.composing})
+			c.composing = ""
+			break
+		}
+
 		if key == tcell.KeyRune {
 			c.composing = fmt.Sprintf("%s%c", c.composing, t.Rune())
 			c.Info("composing: %v", c.composing)
@@ -40,6 +49,13 @@ func (c *chatView) handleEvent(ui *UI, e tcell.Event) bool {
 }
 
 func (c *chatView) draw(b *buffer) {
+	chatHeight := b.height - 1
+	for i := 0; i < math.Min(chatHeight, len(c.history)); i++ {
+		msg := c.history[len(c.history)-1-i]
+		s := fmt.Sprintf("%12s: %s", msg.From, msg.Text)
+		b.writeString(s, math.Vec{0, b.height - 2 - i}, tcell.StyleDefault)
+	}
+
 	b.writeString(c.composing, math.Vec{0, b.height - 1}, tcell.StyleDefault)
 
 	if c.inFocus {

internal/app/ui.go

@@ -6,6 +6,7 @@ import (
 	"github.com/gdamore/tcell/v2"
 	"github.com/jordanorelli/astro-domu/internal/exit"
 	"github.com/jordanorelli/astro-domu/internal/math"
+	"github.com/jordanorelli/astro-domu/internal/sim"
 	"github.com/jordanorelli/astro-domu/internal/wire"
 	"github.com/jordanorelli/blammo"
 )
@@ -17,8 +18,8 @@ type UI struct {
 	room       *wire.Room
 	client     *wire.Client
 
-	gameView view
+	gameView *gameView
-	chatView view
+	chatView *chatView
 	focussed view
 }
 
@@ -57,7 +58,8 @@ func (ui *UI) Run() {
 		},
 	}
 	ui.chatView = &chatView{
-		Log: ui.Child("chat-view"),
+		Log:     ui.Child("chat-view"),
+		history: make([]sim.ChatMessage, 0, 32),
 	}
 	ui.focussed = ui.gameView
 
@@ -140,6 +142,10 @@ func (ui *UI) handleNotification(v wire.Value) bool {
 		ui.room.Entities = n.Entities
 		return true
 
+	case *sim.ChatMessage:
+		ui.chatView.history = append(ui.chatView.history, *n)
+		return true
+
 	default:
 		ui.Info("ignoring notification: %v", n)
 		return false

internal/math/abs.go

@@ -21,3 +21,18 @@ func Max(a, b int, more ...int) int {
 	}
 	return v
 }
+
+func Min(a, b int, more ...int) int {
+	var v int
+	if a < b {
+		v = a
+	} else {
+		v = b
+	}
+	for _, next := range more {
+		if next < v {
+			v = next
+		}
+	}
+	return v
+}

internal/sim/chat.go

@@ -0,0 +1,30 @@
+package sim
+
+import (
+	"github.com/jordanorelli/astro-domu/internal/wire"
+)
+
+type SendChatMessage struct {
+	Text string `json:"text"`
+}
+
+func (SendChatMessage) NetTag() string { return "chat/send-msg" }
+
+func (m *SendChatMessage) exec(w *world, r *room, p *player, seq int) result {
+	for _, p2 := range r.players {
+		p2.outbox <- wire.Response{Body: ChatMessage{From: p.name, Text: m.Text}}
+	}
+	return result{reply: wire.OK{}}
+}
+
+type ChatMessage struct {
+	From string `json:"from"`
+	Text string `json:"text"`
+}
+
+func (ChatMessage) NetTag() string { return "chat/msg" }
+
+func init() {
+	wire.Register(func() wire.Value { return new(SendChatMessage) })
+	wire.Register(func() wire.Value { return new(ChatMessage) })
+}