Randomize combats count and creatures choice

db/seeds.rb

@@ -16,8 +16,13 @@ nb_creatures.times do
   puts "Création de #{c.to_label}"
 end
 
-3.times do |i| 
+nb_combats = rand(10..20)
-  combat = Combat.new(left_fighter: Creature.alive.first, right_fighter: Creature.alive.last, name: "Auto-généré #{i + 1}")
+nb_combats.times do |i|
+  left_fighter, right_fighter = Creature.alive.sample(2)
+
+  next unless left_fighter && right_fighter
+
+  combat = Combat.new(left_fighter: left_fighter, right_fighter: right_fighter, name: "Auto-généré #{i + 1}")
   combat.baston!
   combat.left_fighter.save!
   combat.right_fighter.save!