remove demo game

ui.inventory.go

@@ -0,0 +1,148 @@
+package pncdsl
+
+import (
+	"github.com/hajimehoshi/ebiten/v2"
+	"github.com/hajimehoshi/ebiten/v2/vector"
+)
+
+// InventoryBar shows the player's items as clickable slots. Left-click on
+// a slot under the "look" verb prints the item's description; under any
+// other verb, it toggles selection (the cursor "picks up" the item).
+type InventoryBar struct {
+	Name     string
+	Origin   Point
+	Slots    int
+	Cols     int
+	SlotSize int
+	Gap      int
+
+	PanelBG bool
+}
+
+func (b *InventoryBar) GetName() string { return b.Name }
+
+func (b *InventoryBar) slotRect(idx int) Rectangle {
+	cols := b.Cols
+	if cols <= 0 {
+		cols = b.Slots
+	}
+	step := b.SlotSize + b.Gap
+	col := idx % cols
+	row := idx / cols
+	x := b.Origin.X + float64(col*step)
+	y := b.Origin.Y + float64(row*step)
+	return Rect(x, y, float64(b.SlotSize), float64(b.SlotSize))
+}
+
+func (b *InventoryBar) Tick(ctx *UICtx) {
+	g := ctx.Game
+	mp := g.Input.Point()
+	items := g.Inventory.Items()
+
+	// hover label: when over a slot with an item, show its description
+	for i := 0; i < min(b.Slots, len(items)); i++ {
+		if b.slotRect(i).Contains(mp) {
+			if it, ok := g.ItemManager.Get(items[i]); ok && it.Description != "" {
+				g.SetHoverLabel(it.Description)
+			} else {
+				g.SetHoverLabel(items[i])
+			}
+			break
+		}
+	}
+
+	if !g.Input.LeftClicked() {
+		return
+	}
+	for i := 0; i < min(b.Slots, len(items)); i++ {
+		if b.slotRect(i).Contains(mp) {
+			g.Input.ConsumeLeft()
+			name := items[i]
+			if g.SelectedVerb() == "look" {
+				if it, ok := g.ItemManager.Get(name); ok && it.Description != "" {
+					g.queueAction(Say("player", it.Description), "inv-look")
+					return
+				}
+			}
+			if g.Inventory.Selected() == name {
+				g.Inventory.Select("")
+			} else {
+				g.Inventory.Select(name)
+			}
+			return
+		}
+	}
+}
+
+func (b *InventoryBar) Draw(dst *ebiten.Image, ctx *UICtx) {
+	g := ctx.Game
+	th := g.Theme()
+	items := g.Inventory.Items()
+
+	if b.PanelBG {
+		last := b.slotRect(b.Slots - 1)
+		first := b.slotRect(0)
+		x := first.X - 2
+		y := first.Y - 2
+		w := (last.X + last.W) - first.X + 4
+		h := (last.Y + last.H) - first.Y + 4
+		vector.DrawFilledRect(dst, float32(x), float32(y), float32(w), float32(h), th.PanelBG, false)
+	}
+
+	for i := 0; i < b.Slots; i++ {
+		r := b.slotRect(i)
+		bg := th.InventorySlotBG
+		if i < len(items) && items[i] == g.Inventory.Selected() {
+			bg = th.InventorySlotSelectedBG
+		}
+		vector.DrawFilledRect(dst, float32(r.X), float32(r.Y), float32(r.W), float32(r.H), bg, false)
+		if i < len(items) {
+			it, ok := g.ItemManager.Get(items[i])
+			if !ok {
+				continue
+			}
+			img := g.loaded.image(g.AssetManager, it.Sprite)
+			sw, sh := img.Bounds().Dx(), img.Bounds().Dy()
+			if sw == 0 || sh == 0 {
+				continue
+			}
+			if g.loaded.isPlaceholder(it.Sprite) {
+				// draw a small colored square as a stand-in
+				inset := float32(2)
+				vector.DrawFilledRect(dst,
+					float32(r.X)+inset, float32(r.Y)+inset,
+					float32(r.W)-2*inset, float32(r.H)-2*inset,
+					th.VerbButtonSelectedBG, false)
+				continue
+			}
+			op := &ebiten.DrawImageOptions{}
+			inset := 1.0
+			tgtW := r.W - 2*inset
+			tgtH := r.H - 2*inset
+			op.GeoM.Scale(tgtW/float64(sw), tgtH/float64(sh))
+			op.GeoM.Translate(r.X+inset, r.Y+inset)
+			dst.DrawImage(img, op)
+		}
+	}
+}
+
+func min(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+// BlocksClickAt — clickBlocker contract for the RadialVerbs widget.
+func (b *InventoryBar) BlocksClickAt(p Point) bool {
+	if b.Slots <= 0 {
+		return false
+	}
+	first := b.slotRect(0)
+	last := b.slotRect(b.Slots - 1)
+	x := first.X
+	y := first.Y
+	w := last.X + last.W - first.X
+	h := last.Y + last.H - first.Y
+	return Rect(x, y, w, h).Contains(p)
+}