feat: message actions are now sequences of messages with settable delays

2 files changed, 20 insertions, 17 deletions

diff --git a/internal/behavior/behavior.go b/internal/behavior/behavior.go
index 58b5e6b..12eef0b 100644
--- a/internal/behavior/behavior.go
+++ b/internal/behavior/behavior.go
@@ -58,6 +58,16 @@ type NodeAction struct {
 	ApsNode        bool           `yaml:"aps_node,omitempty"`
 }
 
+// DelayedMessage is a single message with a delay (in ticks) to wait before
+// showing it. Used by the interaction sequencer (on_use / on_look / on_kill /
+// on_traverse); on_enter and trigger steps emit their Messages list
+// immediately when the step fires (use the step's own Delay for inter-step
+// spacing).
+type DelayedMessage struct {
+	Message string `yaml:"message,omitempty"`
+	Delay   int    `yaml:"delay,omitempty"`
+}
+
 // Interaction is one conditional trigger entry shared by on_use, on_look
 // (objects) and on_kill (mobs). Item filters by the appropriate held/weapon
 // item depending on the interaction kind (see itemMatch on applyInteraction).
@@ -70,7 +80,6 @@ type NodeAction struct {
 type Interaction struct {
 	Item      string      `yaml:"item_id,omitempty"`
 	Condition *Condition  `yaml:"condition,omitempty"`
-	Message   string      `yaml:"message,omitempty"`
 	Action    *StepAction `yaml:"action,omitempty"`
 }
 
@@ -78,25 +87,25 @@ type Interaction struct {
 // across all effect executors (on_enter steps, room/global triggers, talk
 // nodes, use/look/kill interactions, exit traversal). The embedded
 // NodeAction holds the inline-only effects (flags/items/teleport/heal/credits/
-// aps_node); the additional fields are the sequence-only effects (message,
+// aps_node); the additional fields are the sequence-only effects (messages,
 // broadcasts, mob spawn/despawn, delay). Condition is evaluated per-step by
 // the on_enter / trigger schedulers; inline callers ignore it (the gating
 // happens at the parent Interaction.ExitDef level instead).
 type StepAction struct {
 	NodeAction      `yaml:",inline"`
-	Condition       *Condition      `yaml:"condition,omitempty"`
-	Message         string          `yaml:"message,omitempty"`
-	Broadcast       string          `yaml:"broadcast,omitempty"`
-	BroadcastGlobal string          `yaml:"broadcast_global,omitempty"`
-	SpawnMob        *SpawnMobConfig `yaml:"spawn_mob,omitempty"`
-	DespawnMob      string          `yaml:"despawn_mob,omitempty"`
-	Delay           int             `yaml:"delay,omitempty"`
+	Condition       *Condition       `yaml:"condition,omitempty"`
+	Messages        []DelayedMessage `yaml:"messages,omitempty"`
+	Broadcast       string           `yaml:"broadcast,omitempty"`
+	BroadcastGlobal string           `yaml:"broadcast_global,omitempty"`
+	SpawnMob        *SpawnMobConfig  `yaml:"spawn_mob,omitempty"`
+	DespawnMob      string           `yaml:"despawn_mob,omitempty"`
+	Delay           int              `yaml:"delay,omitempty"`
 }
 
 // IsTimed reports whether the step carries sequence semantics (any non-zero
 // field means it needs per-tick scheduling rather than synchronous printing).
 func (s StepAction) IsTimed() bool {
-	return s.Delay > 0 || s.Message != "" || s.Broadcast != "" || s.BroadcastGlobal != "" ||
+	return s.Delay > 0 || len(s.Messages) > 0 || s.Broadcast != "" || s.BroadcastGlobal != "" ||
 		s.SpawnMob != nil || s.DespawnMob != "" ||
 		len(s.SetGlobalFlags) > 0 || len(s.SetPlayerFlags) > 0 ||
 		s.GiveItem != "" || s.TakeItem != "" || s.Teleport != 0 || s.Heal != 0 ||
diff --git a/internal/behavior/types.go b/internal/behavior/types.go
index 521867a..f451400 100644
--- a/internal/behavior/types.go
+++ b/internal/behavior/types.go
@@ -51,7 +51,7 @@ const (
 	TypeMix            ActionType = "mix"
 	TypeConstruct      ActionType = "construct"
 	TypeTriggerModule  ActionType = "trigger_module"
-	TypeUseInteraction ActionType = "use_interaction"
+	TypeInteractionSeq ActionType = "interaction_seq"
 )
 
 type Action struct {
@@ -117,12 +117,6 @@ type TalkData struct {
 	PendingChosen   bool
 }
 
-type UseInteractionData struct {
-	Message string
-	Action  *StepAction
-	ObjName string
-}
-
 type BurnData struct {
 	ItemID    string
 	ToolSpeed float64