Added MinelayerProjectile blast for near ships

game/entities/weapons/minelayer/minelayer_projectile.gd

@@ -5,7 +5,32 @@ extends BlastProjectile
 @export var deceleration : int
 
 
+@onready var sprite_on := $Sprite2D_On
+@onready var sprite_off := $Sprite2D_Off
 @onready var livetime_timer := $LivetimeTimer
+@onready var sprite_on_timer := $SpriteOnTimer
+@onready var sprite_off_timer := $SpriteOffTimer
+
+
+const OFF_TIMES = [
+	1.0, 1.0, 0.5, 0.25, 0.05, 0.05, 0.05, 0.05, 0.05,
+]
+const ON_TIME = 0.05
+
+
+enum Sprite {
+	ON,
+	OFF,
+}
+
+
+var _bodies_inside: Array[Node2D] = []
+var current_off_time_index := 0
+
+
+func _ready() -> void:
+	_switch_sprite(Sprite.OFF)
+	super._ready()
 
 
 func _physics_process(delta: float) -> void:
@@ -23,3 +48,52 @@ func _process_acceleration(delta: float) -> void:
 
 func _on_livetime_timer_timeout() -> void:
 	queue_free()
+
+
+func _on_blast_body_entered(body: Node2D) -> void:
+	_bodies_inside.append(body)
+	_switch_sprite(Sprite.ON)
+	if sprite_on_timer.is_stopped() and sprite_off_timer.is_stopped():
+		sprite_on_timer.start(ON_TIME)
+
+
+func _on_blast_body_exited(body: Node2D) -> void:
+	if not body in _bodies_inside: return
+	
+	_bodies_inside.erase(body)
+	
+	if _bodies_inside.size() == 0:
+		_reset()
+
+
+func _on_sprite_on_timer_timeout() -> void:
+	current_off_time_index += 1
+	
+	if current_off_time_index >= OFF_TIMES.size():
+		_try_to_damage_by_blast()
+		_process_hit_for_projectile(null)
+	else:
+		_switch_sprite(Sprite.OFF)
+		sprite_off_timer.start(OFF_TIMES[current_off_time_index])
+
+
+func _on_sprite_off_timer_timeout() -> void:
+	_switch_sprite(Sprite.ON)
+	sprite_on_timer.start(ON_TIME)
+
+
+func _reset() -> void:
+	_switch_sprite(Sprite.OFF)
+	sprite_on_timer.stop()
+	sprite_off_timer.stop()
+	current_off_time_index = 0
+
+
+func _switch_sprite(sprite: Sprite) -> void:
+	match sprite:
+		Sprite.ON:
+			sprite_on.show()
+			sprite_off.hide()
+		Sprite.OFF:
+			sprite_on.hide()
+			sprite_off.show()