up3

server/item/lingering_potion.go

@@ -0,0 +1,35 @@
+package item
+
+import (
+	"github.com/df-mc/dragonfly/server/item/potion"
+	"github.com/df-mc/dragonfly/server/world"
+	"github.com/df-mc/dragonfly/server/world/sound"
+)
+
+// LingeringPotion is a variant of a splash potion that can be thrown to leave clouds with status effects that linger on
+// the ground in an area.
+type LingeringPotion struct {
+	// Type is the type of lingering potion.
+	Type potion.Potion
+}
+
+// MaxCount ...
+func (l LingeringPotion) MaxCount() int {
+	return 1
+}
+
+// Use ...
+func (l LingeringPotion) Use(tx *world.Tx, user User, ctx *UseContext) bool {
+	create := tx.World().EntityRegistry().Config().LingeringPotion
+	opts := world.EntitySpawnOpts{Position: eyePosition(user), Velocity: throwableOffset(user.Rotation()).Vec3().Mul(0.5)}
+	tx.AddEntity(create(opts, l.Type, user))
+	tx.PlaySound(user.Position(), sound.ItemThrow{})
+
+	ctx.SubtractFromCount(1)
+	return true
+}
+
+// EncodeItem ...
+func (l LingeringPotion) EncodeItem() (name string, meta int16) {
+	return "minecraft:lingering_potion", int16(l.Type.Uint8())
+}