can open an inventory view

internal/app/container_view.go

@@ -50,6 +50,23 @@ func (c *containerView) nextFocus() {
 	}
 }
 
+func (c *containerView) focus(n int) {
+	if c.focussed == n {
+		return
+	}
+
+	cur := c.children[c.focussed]
+	if v, ok := cur.view.(focusable); ok {
+		v.setFocus(false)
+	}
+
+	c.focussed = n
+	cur = c.children[c.focussed]
+	if v, ok := cur.view.(focusable); ok {
+		v.setFocus(true)
+	}
+}
+
 func (c *containerView) draw(img canvas, st *state) {
 	bounds := img.bounds()
 

internal/app/game_view.go

@@ -40,6 +40,8 @@ func (v *gameView) walkHandler(e *tcell.EventKey) change {
 			return move{0, 1}
 		case 'd':
 			return move{1, 0}
+		case 'i':
+			return openInventory{}
 		case 'l':
 			v.keyHandler = v.lookHandler
 			v.statusLine = "(look)"

internal/app/inventory.go

@@ -0,0 +1,34 @@
+package app
+
+import (
+	"github.com/gdamore/tcell/v2"
+	"github.com/jordanorelli/astro-domu/internal/math"
+)
+
+type inventory struct {
+	items []item
+}
+
+type item struct {
+	name string
+}
+
+type inventoryView struct {
+}
+
+func (v *inventoryView) handleEvent(e tcell.Event) change {
+	return nil
+}
+
+func (v *inventoryView) draw(img canvas, st *state) {
+	writeString(img, "Inventory", math.Vec{0, 0}, tcell.StyleDefault)
+}
+
+type openInventory struct{}
+
+func (openInventory) exec(ui *UI) {
+	if ui.root == inGameView {
+		ui.state.detail = &inventoryView{}
+		inGameView.focus(1)
+	}
+}

internal/app/state.go

@@ -10,6 +10,7 @@ type state struct {
 	playerName string
 	room       *wire.Room
 	history    []sim.ChatMessage
+	inventory  inventory
 	detail     view
 }