diff options
Diffstat (limited to 'src/entities/actors/snake/scripts/snake.gd')
| -rw-r--r-- | src/entities/actors/snake/scripts/snake.gd | 87 |
1 files changed, 72 insertions, 15 deletions
diff --git a/src/entities/actors/snake/scripts/snake.gd b/src/entities/actors/snake/scripts/snake.gd index e604011..76b8bee 100644 --- a/src/entities/actors/snake/scripts/snake.gd +++ b/src/entities/actors/snake/scripts/snake.gd @@ -7,12 +7,30 @@ export(PackedScene) var TAIL_SEGMENT_NP: PackedScene onready var path: Path2D = $Path var current_body_segments: int = 0 -var max_body_segments: int = 1 -var body_segment_size: float = 16.0 +var max_body_initial_segments: int = 1 +var body_segment_stack: Array +var tail_segment: PathFollow2D +# didn't konw how to name this, basically holds the current path lenght +# whenever the add body segment, and we use this stack to add body parts +var body_segment_queue: Array func _ready(): - Event.connect("new_curve_point", self, "_on_Head_new_curve_point") + set_physics_process(false) + set_process_input(false) + Event.connect("snake_path_new_point", self, "_on_Head_snake_path_new_point") + Event.connect("snake_added_new_segment", self, "_on_Snake_snake_added_new_segment") + Event.connect("snake_added_initial_segments", self, "_on_Snake_snake_added_initial_segments") + + +func _physics_process(delta: float) -> void: + if body_segment_queue.size() != 0: + _add_new_segment() + + +func _input(event: InputEvent) -> void: + if event.is_action_pressed("add_body_part"): + _add_segment_to_queue() func _draw() -> void: @@ -20,23 +38,62 @@ func _draw() -> void: draw_polyline(path.curve.get_baked_points(), Color.aquamarine, 1, true) -func add_point_to_curve(coordinates: Vector2) -> void: - path.curve.add_point(coordinates) - # update call is to draw curve as there are new points - update() +func _add_new_segment() -> void: + var _path_length_threshold: float = body_segment_queue[0] + Global.SNAKE_SEGMENT_SIZE + if path.curve.get_baked_length() >= _path_length_threshold: + var _temp_body_segment: PathFollow2D = BODY_SEGMENT_NP.instance() + Event.emit_signal("snake_add_new_segment", "body") + var _new_body_offset: float = body_segment_stack.back().offset - Global.SNAKE_SEGMENT_SIZE - if current_body_segments < max_body_segments: - add_snake_segment(BODY_SEGMENT_NP) - elif current_body_segments == max_body_segments: - add_snake_segment(TAIL_SEGMENT_NP) + _temp_body_segment.offset = _new_body_offset + body_segment_stack.append(_temp_body_segment) + path.add_child(_temp_body_segment) + tail_segment.offset = body_segment_stack.back().offset - Global.SNAKE_SEGMENT_SIZE + body_segment_queue.pop_front() + current_body_segments += 1 + Event.emit_signal("snake_added_new_segment", "body") -func add_snake_segment(type: PackedScene) -> void: - if path.curve.get_baked_length() >= (current_body_segments + 1.0) * body_segment_size: + +func _add_initial_segment(type: PackedScene) -> void: + if path.curve.get_baked_length() >= (current_body_segments + 1.0) * Global.SNAKE_SEGMENT_SIZE: var _temp_body_segment: PathFollow2D = type.instance() + Event.emit_signal("snake_add_new_segment", _temp_body_segment.TYPE) + if _temp_body_segment.TYPE == "body": + body_segment_stack.append(_temp_body_segment) + else: + tail_segment = _temp_body_segment path.add_child(_temp_body_segment) + current_body_segments += 1 + Event.emit_signal("snake_added_new_segment", _temp_body_segment.TYPE) + + +func _add_segment_to_queue() -> void: + # need to have the queues in a fixed separation, else if the eating functionality + # gets spammed, all next bodyparts will be spawned almost at the same spot + if body_segment_queue.size() == 0: + body_segment_queue.append(path.curve.get_baked_length()) + else: + body_segment_queue.append(body_segment_queue.back() + Global.SNAKE_SEGMENT_SIZE) + + +func _on_Head_snake_path_new_point(coordinates: Vector2) -> void: + path.curve.add_point(coordinates) + # update call is to draw curve as there are new points to the path's curve + update() + + if current_body_segments < max_body_initial_segments: + _add_initial_segment(BODY_SEGMENT_NP) + elif current_body_segments == max_body_initial_segments: + _add_initial_segment(TAIL_SEGMENT_NP) + + +func _on_Snake_snake_added_new_segment(type: String) -> void: + if type == "tail": + Event.emit_signal("snake_added_initial_segments") -func _on_Head_new_curve_point(coordinates: Vector2) -> void: - add_point_to_curve(coordinates) +func _on_Snake_snake_added_initial_segments() -> void: + set_physics_process(true) + set_process_input(true) |