game: add bleed

scenes/enemies/effects/enemy_effect_bleed.gd

@@ -0,0 +1,29 @@
+class_name EnemyEffectBleed
+extends EnemyEffectBase
+
+var damage: float
+var duration: float
+var tick_rate: float = 1.0
+
+var _timer: Timer
+var _remaining_ticks: int = 5
+var _enemy: EnemyBase
+
+const PUDDLE = preload("res://scenes/puddle.tscn")
+
+func _init(enemy: EnemyBase, damage: float, duration: float):
+	_timer = Timer.new()
+
+func apply(enemy: EnemyBase) -> void:
+	enemy.effects.append(self)
+	while _remaining_ticks > 0:
+		_remaining_ticks -= 1
+		var tree = enemy.get_tree()
+		await enemy.get_tree().create_timer(1.0, false, true, false).timeout
+		var p = PUDDLE.instantiate()
+		enemy.get_parent().add_child(p)
+		p.global_position = enemy.global_position
+	enemy.effects.erase(self)
+
+static func _is_bleeding(enemy: EnemyBase) -> bool:
+	return false