From b1ab4cc5c7c2d4fd9dc248689089e2ff30d5dfea Mon Sep 17 00:00:00 2001
From: Stefano Pigozzi <me@steffo.eu>
Date: Sun, 14 Apr 2024 23:29:29 +0200
Subject: [PATCH] Create `HuntTarget` behaviour

---
 behaviours/hunt_target.gd   | 50 +++++++++++++++++++++++++++++++++++++
 behaviours/hunt_target.tscn | 17 +++++++++++++
 2 files changed, 67 insertions(+)
 create mode 100644 behaviours/hunt_target.gd
 create mode 100644 behaviours/hunt_target.tscn

diff --git a/behaviours/hunt_target.gd b/behaviours/hunt_target.gd
new file mode 100644
index 0000000..de97456
--- /dev/null
+++ b/behaviours/hunt_target.gd
@@ -0,0 +1,50 @@
+extends Node2D
+class_name HuntTarget
+
+
+signal target_selected(target: Node2D)
+signal target_abandoned(target: Node2D)
+
+
+@export var tag: StringName:
+	get:
+		return tag
+	set(value):
+		tag = value
+		hunter.tag = value
+
+@export var give_up_secs: float = 5.0
+
+@onready var give_up_timer: Timer = $"GiveUpTimer"
+@onready var hunter: Hunter = $"Hunter"
+
+var target: Node2D = null
+
+
+func pick_new_target():
+	var idx = Random.rng.randi_range(0, len(hunter.possible_targets) - 1)
+	target = hunter.possible_targets[idx]
+	target_selected.emit(target)
+	give_up_timer.start(give_up_secs)
+
+func _ready():
+	hunter.tag = tag
+
+func _on_hunter_tracked(_body: Node2D):
+	if target == null:
+		pick_new_target()
+
+func _on_hunter_untracked(body: Node2D):
+	if body == target:
+		target = null
+		pick_new_target()
+
+func _on_give_up_timer_timeout() -> void:
+	target = null
+	pick_new_target()
+
+func _on_target_selected(body: Node2D) -> void:
+	Log.p(self, "Target selected: %s" % body)
+
+func _on_target_abandoned(body: Node2D) -> void:
+	Log.p(self, "Target abandoned: %s" % body)
diff --git a/behaviours/hunt_target.tscn b/behaviours/hunt_target.tscn
new file mode 100644
index 0000000..31b6aa4
--- /dev/null
+++ b/behaviours/hunt_target.tscn
@@ -0,0 +1,17 @@
+[gd_scene load_steps=3 format=3 uid="uid://dxmodn8mbvw0i"]
+
+[ext_resource type="Script" path="res://behaviours/hunt_target.gd" id="1_1ex7u"]
+[ext_resource type="PackedScene" uid="uid://ctpn4hvkhxoi3" path="res://behaviours/hunter.tscn" id="2_vjdtc"]
+
+[node name="HuntTarget" type="Node2D"]
+script = ExtResource("1_1ex7u")
+
+[node name="Hunter" parent="." instance=ExtResource("2_vjdtc")]
+
+[node name="GiveUpTimer" type="Timer" parent="."]
+
+[connection signal="target_abandoned" from="." to="." method="_on_target_abandoned"]
+[connection signal="target_selected" from="." to="." method="_on_target_selected"]
+[connection signal="tracked" from="Hunter" to="." method="_on_hunter_tracked"]
+[connection signal="untracked" from="Hunter" to="." method="_on_hunter_untracked"]
+[connection signal="timeout" from="GiveUpTimer" to="." method="_on_give_up_timer_timeout"]