feat: add initial People Playground mod development kit

extracted_wiki_content/internalReference/liquid.txt

@@ -0,0 +1,52 @@
+URL: https://wiki.studiominus.nl/internalReference/Liquid.html
+Title: People Playground Modding - Liquid
+==================================================
+
+public abstract class Liquid
+The liquid base class. All liquids derive from this class.
+Liquids are stateless. Do not store mutable values in a liquid.
+Fields
+public Color Color
+The global colour of this liquid.
+
+public const float LiquidUnitToLiter
+Multiply liquid units by this value to convert to liters
+Constant value: 0.3571428571428571f
+
+public const float LiterToLiquidUnit
+Multiply liter values by this value to convert to liquid units
+Constant value: 2.8f
+
+Methods
+public abstract void OnEnterLimb(LimbBehaviour limb)
+Called when this liquid enters a limb. Note that this may be called quite often for the same container as liquid quickly moves in and out of it.
+
+public abstract void OnEnterContainer(BloodContainer container)
+Called when this liquid enters a container. Limbs are also containers. Note that this may be called quite often for the same container as liquid quickly moves in and out of it.
+
+public abstract void OnExitContainer(BloodContainer container)
+Called when this liquid exits a container. Note that this may be called quite often for the same container as liquid quickly moves in and out of it.
+
+public virtual void OnUpdate(BloodContainer container)
+Called every second by every container for every liquid it contains.
+
+public virtual string GetDisplayName()
+No description provided
+
+public static bool HasID(string id)
+Has the given ID been registered
+
+public static bool HasLiquid(Liquid liq)
+Has the given liquid instance been registered
+
+public static Liquid GetLiquid(string identity)
+Get the liquid associated with a key
+
+public static string GetIdentity(Liquid instance)
+Get the key associated with a liquid instance
+
+public static void Register(string identity, Liquid liquid)
+Register a liquid
+
+public IEnumerable<Liquid> GetAll()
+Read-only collection of every registered liquid