Merge pull request #1762 from endlessm/wjt/randomframespritebehavior-randomize-frame-progress-too

RandomFrameSpriteBehavior: Randomize frame progress too

Author: manuq

scenes/game_logic/sprite_behaviors/random_frame_sprite_behavior.gd

@@ -10,10 +10,13 @@ extends BaseSpriteBehavior
 
 func _ready() -> void:
 	var frames_length: int = sprite.sprite_frames.get_frame_count(sprite.animation)
-	sprite.frame = randi_range(0, frames_length)
+	# TODO: weight the choice of frame by the relative lengths of frames.
+	# i.e. if an animation has one frame lasting 800ms, and four frames lasting 100ms each,
+	# we should be 8× more likely to pick the 800ms frame than each of the other 4.
+	sprite.set_frame_and_progress(randi_range(0, frames_length), randf())
 
 
 func _notification(what: int) -> void:
 	match what:
 		NOTIFICATION_EDITOR_PRE_SAVE:
-			sprite.frame_progress = 0
+			sprite.frame = 0