Blood manipulation functions for E2 (#3309)

* Blood manipulation functions for E2

* Add missing dot

* Fix invalid return

* Add missing `IsOwner` check

I did this with my phone and completely forgot about it.

Author: Astralcircle

lua/entities/gmod_wire_expression2/core/entity.lua

@@ -591,6 +591,26 @@ e2function number entity:getBodygroups(bgrp_id)
 	return this:GetBodygroupCount(bgrp_id)
 end
 
+E2Lib.registerConstant("BLOOD_DONT_BLEED", DONT_BLEED)
+E2Lib.registerConstant("BLOOD_COLOR_RED", BLOOD_COLOR_RED)
+E2Lib.registerConstant("BLOOD_COLOR_YELLOW", BLOOD_COLOR_YELLOW)
+E2Lib.registerConstant("BLOOD_COLOR_GREEN", BLOOD_COLOR_GREEN)
+E2Lib.registerConstant("BLOOD_COLOR_MECH", BLOOD_COLOR_MECH)
+E2Lib.registerConstant("BLOOD_COLOR_ANTLION", BLOOD_COLOR_ANTLION)
+E2Lib.registerConstant("BLOOD_COLOR_ZOMBIE", BLOOD_COLOR_ZOMBIE)
+E2Lib.registerConstant("BLOOD_COLOR_ANTLION_WORKER", BLOOD_COLOR_ANTLION_WORKER)
+
+e2function void entity:setBloodColor(number bloodcolor)
+	if not IsValid(this) then return self:throw("Invalid entity!", nil) end
+	if not isOwner(self, this) then return self:throw("You do not own this entity!", nil) end
+	this:SetBloodColor(math.Clamp(bloodcolor, -1, 6))
+end
+
+e2function number entity:getBloodColor()
+	if not IsValid(this) then return self:throw("Invalid entity!", -1) end
+	return this:GetBloodColor() or -1
+end
+
 --[[******************************************************************************]]
 
 e2function number entity:isPlayerHolding()

lua/wire/client/e2descriptions.lua

@@ -1089,6 +1089,8 @@ E2Helper.Descriptions["runOnChat(n)"] = "DEPRECATED. Use 'event chat(Player:enti
 -- Color
 E2Helper.Descriptions["setBodygroup(e:nn)"] = "Group ID, Group SubID\nSets the bodygroups of the given entity"
 E2Helper.Descriptions["getBodygroups(e:n)"] = "Group ID\nReturns the number of bodygroups in the Group ID of the given entity"
+E2Helper.Descriptions["setBloodColor(e:n)"] = "Sets the blood color of an entity via a number (_BLOOD)."
+E2Helper.Descriptions["getBloodColor(e:)"] = "Returns the blood color of an entity as a number (_BLOOD)."
 E2Helper.Descriptions["setColor(nnn)"] = "Sets the color of the E2 chip"
 E2Helper.Descriptions["setColor(e:vn)"] = "Sets the color (as vector) and alpha (as number) of the entity"
 E2Helper.Descriptions["setColor(e:xv4)"] = "Sets the color and alpha (as 4D vector) of the entity"