Health Up modifier for non-red characters + misc (#710)

* Health up / different effect modifiers

* ClosestPlayerTo, move utility functions

* ClosestPlayer adds to DifferentEffectPlayers table

* More data tables for Health Ups

* useless Lost items, comment the health mod atm

* HealingRed, RedToX

* HealingRed added

* Moving Pluralize

* oops

* Move Pluralize

* Move Pluralize

* allow choosing the position of modifiers in the table

* default layer to 0

* Changes to no red char conditions

* Support healing items in the modifier

* tweaks to health up data

* Support {1} in Result Header

* {1} in ResultHeader

* Tweak binge eater wording

* reword comment

features/eid_api.lua

@@ -1167,7 +1167,8 @@ end
 
 -- Adds Description object modifiers.
 -- Used for altering descriptions. Example: Spindown dice, Tarot Cloth, ...
-function EID:addDescriptionModifier(modifierName, condition, callback)
+function EID:addDescriptionModifier(modifierName, condition, callback, position)
+	position = position or #EID.DescModifiers + 1
 	for _,v in ipairs(EID.DescModifiers) do
 		if v["name"] == modifierName then
 			v["condition"] = condition
@@ -1175,7 +1176,7 @@ function EID:addDescriptionModifier(modifierName, condition, callback)
 			return
 		end
 	end
-	table.insert(EID.DescModifiers, {
+	table.insert(EID.DescModifiers, position, {
 		name = modifierName,
 		condition = condition,
 		callback = callback
@@ -2411,6 +2412,21 @@ function EID:CopyTable(orig)
     end
     return copy
 end
+-- super simple table concatenation: https://www.tutorialspoint.com/concatenation-of-tables-in-lua-programming
+function EID:ConcatTables(t1, t2)
+	for i = 1, #t2 do
+		t1[#t1 + 1] = t2[i]
+	end
+	return t1
+end
+
+-- thing to fix find/replace pairs with hyphens (like "1-2") or pluses (like +1 Health) breaking because of special characters
+-- https://stackoverflow.com/questions/29072601/lua-string-gsub-with-a-hyphen
+function EID:SimpleReplace(str, what, with, count)
+	what = string.gsub(what, "[%(%)%.%+%-%*%?%[%]%^%$%%]", "%%%1") -- escape pattern
+	with = string.gsub(with, "[%%]", "%%%%")                       -- escape replacement
+	return string.gsub(str, what, with, count)
+end
 
 -- simple decimal rounding, instead of just floor or ceil
 function EID:SimpleRound(num, dp)
@@ -2425,3 +2441,24 @@ function EID:ArrayContains(t, value)
 	end
 	return false
 end
+
+
+-- Find the closest player to the given entity
+function EID:ClosestPlayerTo(entity)
+	local closestDist = 9999999
+	local closestPlayer = EID.player
+	local numPlayers = game:GetNumPlayers()
+	if EID.InsideItemReminder then return EID.ItemReminderPlayerEntity end
+	if entity == nil or numPlayers == 1 then return closestPlayer end
+	
+	for i = 1, #EID.coopAllPlayers do
+		local player = EID.coopAllPlayers[i]
+		local dist = player.Position:Distance(entity.Position)
+		if dist < closestDist then
+			closestDist = dist
+			closestPlayer = player
+		end
+	end
+	
+	return closestPlayer
+end