Add snakes to vent spawn event (#32070)

Add snakes to vents

Resources/Prototypes/GameRules/events.yml

@@ -19,6 +19,7 @@
     - id: RandomSentience
     - id: SlimesSpawn
     - id: SolarFlare
+    - id: SnakeSpawn
     - id: SpiderClownSpawn
     - id: SpiderSpawn
     - id: VentClog
@@ -35,7 +36,6 @@
     - id: SleeperAgents
     - id: ZombieOutbreak
 
-
 - type: entity
   id: BaseStationEvent
   parent: BaseGameRule
@@ -354,6 +354,27 @@
     - id: MobAdultSlimesYellowAngry
       prob: 0.02
 
+- type: entity
+  id: SnakeSpawn
+  parent: BaseStationEventShortDelay
+  components:
+  - type: StationEvent
+    startAnnouncement: station-event-vent-creatures-start-announcement
+    startAudio:
+      path: /Audio/Announcements/attention.ogg
+    earliestStart: 20
+    minimumPlayers: 15
+    weight: 5
+    duration: 60
+  - type: VentCrittersRule
+    entries:
+    - id: MobPurpleSnake
+      prob: 0.02
+    - id: MobSmallPurpleSnake
+      prob: 0.02
+    - id: MobCobraSpace
+      prob: 0.02
+
 - type: entity
   id: SpiderSpawn
   parent: BaseStationEventShortDelay