feat(art): add storybook meadow and woodland villagers

world/jajce/GrassInteractionController.gd

@@ -1,18 +1,45 @@
 extends Node
 
 const SHADER_INTERACTOR_LIMIT := 8
+const CLEARING_LIMIT := 4
 
 @export var grass_material: ShaderMaterial
 @export_range(1, SHADER_INTERACTOR_LIMIT, 1) var max_interactors := 8
 @export_range(0.02, 0.5, 0.01) var update_interval := 0.08
+@export var path_clearings: Array[NodePath] = []
 
 var _elapsed := 0.0
 
 
 func _ready() -> void:
+	# JajceWorld first isolates its mutable materials in the parent's _ready().
+	call_deferred("_configure_path_clearings")
 	_refresh_interactors()
 
 
+func _configure_path_clearings() -> void:
+	if grass_material == null:
+		return
+	var segments := PackedVector4Array()
+	segments.resize(CLEARING_LIMIT)
+	var widths := Vector4.ZERO
+	var count := 0
+	for path in path_clearings.slice(0, CLEARING_LIMIT):
+		var strip := get_node_or_null(path) as MeshInstance3D
+		if strip == null or not strip.mesh is BoxMesh:
+			continue
+		var box := strip.mesh as BoxMesh
+		var half_length := strip.global_basis.z * box.size.z * 0.5
+		var start := strip.global_position - half_length
+		var end := strip.global_position + half_length
+		segments[count] = Vector4(start.x, start.z, end.x, end.z)
+		widths[count] = strip.global_basis.x.length() * box.size.x * 0.5 + 0.12
+		count += 1
+	grass_material.set_shader_parameter("clearing_count", count)
+	grass_material.set_shader_parameter("clearing_segments", segments)
+	grass_material.set_shader_parameter("clearing_half_widths", widths)
+
+
 func _process(delta: float) -> void:
 	_elapsed += delta
 	if _elapsed < update_interval: