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extends HBoxContainer
enum {
BODY1,
BODY2,
BODY3,
TAIL
}
var frames: Dictionary = {
BODY1: preload("res://ui/hud/snake/sprites/body1.png"),
BODY2: preload("res://ui/hud/snake/sprites/body2.png"),
BODY3: preload("res://ui/hud/snake/sprites/body3.png"),
TAIL: preload("res://ui/hud/snake/sprites/tail.png")
}
var last_tail_index: int = -1
var last_frame: int = -1
var frame_direction: int = 1
func _ready():
Event.connect("snake_added_new_segment", self, "_on_snake_added_new_segment")
func _on_snake_added_new_segment(type: String) -> void:
match type:
"body":
_add_body_frame()
_move_tail_frame()
"tail":
_add_tail_frame()
func _add_body_frame() -> void:
var texture_rect: TextureRect = TextureRect.new()
texture_rect.texture = frames[_get_next_body_frame()]
add_child(texture_rect)
func _add_tail_frame() -> void:
var texture_rect: TextureRect = TextureRect.new()
texture_rect.texture = frames[TAIL]
add_child(texture_rect)
last_tail_index = get_child_count() - 1
func _move_tail_frame() -> void:
var child_count: int = get_child_count()
if child_count > Global.SNAKE_INITIAL_SEGMENTS + 1:
var last_child: TextureRect = get_child(last_tail_index)
move_child(last_child, child_count - 1)
last_tail_index = child_count - 1
func _get_next_body_frame() -> int:
match last_frame:
-1:
last_frame = BODY2
BODY2:
last_frame += frame_direction
BODY3:
frame_direction = -1
last_frame += frame_direction
BODY1:
frame_direction = 1
last_frame += frame_direction
return last_frame
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