Add snakes to vent spawn event (space-wizards#32070)

Add snakes to vents

Author: Plykiya

Resources/Prototypes/GameRules/events.yml

@@ -19,6 +19,7 @@
     - id: RandomSentience
     - id: SlimesSpawn
     - id: SolarFlare
+    - id: SnakeSpawn
     - id: SpiderClownSpawn
     - id: SpiderSpawn
     - id: VentClog
@@ -35,36 +36,35 @@
     - id: SleeperAgents
     - id: ZombieOutbreak
 
-
 - type: entity
   id: BaseStationEvent
   parent: BaseGameRule
   abstract: true
   components:
-    - type: GameRule
-      delay:
-        min:  10
-        max:  20
+  - type: GameRule
+    delay:
+      min:  10
+      max:  20
 
 - type: entity
   id: BaseStationEventShortDelay
   parent: BaseGameRule
   abstract: true
   components:
-    - type: GameRule
-      delay:
-        min:  10
-        max:  20
+  - type: GameRule
+    delay:
+      min:  10
+      max:  20
 
 - type: entity
   id: BaseStationEventLongDelay
   parent: BaseGameRule
   abstract: true
   components:
-    - type: GameRule
-      delay:
-        min:  40
-        max:  60
+  - type: GameRule
+    delay:
+      min:  40
+      max:  60
 
 - type: entity
   id: AnomalySpawn
@@ -286,7 +286,7 @@
     startAudio:
       path: /Audio/Announcements/power_off.ogg
       params:
-       volume: -4
+        volume: -4
     duration: 60
     maxDuration: 120
   - type: PowerGridCheckRule
@@ -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
@@ -518,9 +539,9 @@
   id: MimicVendorRule
   parent: BaseGameRule
   components:
-    - type: StationEvent
-      earliestStart: 0
-      minimumPlayers: 20
-      maxOccurrences: 1 # this event has diminishing returns on interesting-ness, so we cap it
-      weight: 5
-    - type: MobReplacementRule
+  - type: StationEvent
+    earliestStart: 0
+    minimumPlayers: 20
+    maxOccurrences: 1 # this event has diminishing returns on interesting-ness, so we cap it
+    weight: 5
+  - type: MobReplacementRule