add bone scale variation to ants

scripts/units/abstract/controlled_ant_unit.gd

@@ -1,9 +1,32 @@
 extends ControlledUnit
 class_name ControlledAntUnit
 
+const BONE_SCALE_VARIATION: float = 0.25
+
+var _bones_to_scale: PackedStringArray = [
+	"Root",
+	"Body",
+	"Butt",
+	"Head",
+	"Antenna_root_L",
+	"Eye_L",
+	"Mandible_L",
+	"Antenna_root_R",
+	"Eye_R",
+	"Mandible_R",
+]
+
 @onready var skeleton: Skeleton3D = $AntModel/Armature/Skeleton3D
 
 
 func _ready() -> void:
 	assert(skeleton != null, "skeleton missing!")
 	super._ready()
+	for bone_name in _bones_to_scale:
+		var bone := skeleton.find_bone(bone_name)
+		var bone_transform := skeleton.get_bone_rest(bone)
+		bone_transform.basis *= 1 + randf_range(
+				-BONE_SCALE_VARIATION, 
+				BONE_SCALE_VARIATION,
+		)
+		skeleton.set_bone_pose(bone, bone_transform)