feat: add user interaction with the task zones

player/player.gd

@@ -5,6 +5,17 @@ extends CharacterBody3D
 @export var rotation_speed := 12.0
 @export var camera_rig: Node3D
 
+@export var simulation_manager: Node
+
+@export var farm_zone: Marker3D
+@export var forest_zone: Marker3D
+@export var food_zone: Marker3D
+@export var guard_zone: Marker3D
+@export var study_zone: Marker3D
+
+@export var stomach_capacity_for_food := 5
+@export var interaction_range := 3.0
+
 func _physics_process(delta: float) -> void:
 	var input := Input.get_vector(
 		"move_left",
@@ -39,3 +50,36 @@ func _physics_process(delta: float) -> void:
 	if direction.length() > 0.01:
 		var target_angle := atan2(direction.x, direction.z)
 		rotation.y = lerp_angle(rotation.y, target_angle, rotation_speed * delta)
+
+
+func _unhandled_input(event: InputEvent) -> void:
+	# keep your camera mouse code here too
+	if event.is_action_pressed("interact"):
+		try_interact()
+		
+		
+func try_interact() -> void:
+	if simulation_manager == null:
+		return
+
+	if is_near(farm_zone):
+		simulation_manager.add_food(5.0)
+		print("Player gathered food for the village.")
+	elif is_near(forest_zone):
+		simulation_manager.add_wood(5.0)
+		print("Player gathered wood for the village.")
+	elif is_near(guard_zone):
+		simulation_manager.add_safety(3.0)
+		print("Player helped guard the village.")
+	elif is_near(study_zone):
+		simulation_manager.add_knowledge(2.0)
+		print("Player shared knowledge.")
+	elif is_near(food_zone):
+		simulation_manager.eat_food(stomach_capacity_for_food)
+		print("Player eating shit up.")
+		
+func is_near(zone: Marker3D) -> bool:
+	if zone == null:
+		return false
+	
+	return global_position.distance_to(zone.global_position) <= interaction_range