Module:Constants: Difference between revisions

Module:Constants (view source)

Revision as of 00:02, 19 April 2023

2,365 bytes added , 19 April 2023

getModifiersDifference: Initial implementation

Auron956

Interface administrators, Administrators

17,105

edits

@@ Line 964: / Line 964: @@
 	return skillArray
+end
+-- Returns a modifiers table indicating modifiersNew less modifiersOld
+-- The returned table can be passed to getModifiersText to obtain the
+-- result in a human readable format
+function p.getModifiersDifference(modifiersOld, modifiersNew)
+	local modHasPrefix = {}
+	local modDiff, modDiffBase = {}, {}
+	local allMods = {
+		{ ["mods"] = modifiersNew, ["mult"] = 1 },
+		{ ["mods"] = modifiersOld, ["mult"] = -1 }
+	}
+	-- Generate modifiers table containing only variances
+	-- Create modDiffBase with mod base names (less 'increased'/'decreased' prefixes),
+	for i, modDef in ipairs(allMods) do
+		for modName, value in pairs(modDef.mods) do
+			local modBaseName, modIsIncrease = modName, true
+			if Shared.startsWith(modName, "increased") or Shared.startsWith(modName, "decreased") then
+				modBaseName = string.sub(modName, 10)
+				modIsIncrease = Shared.startsWith(modName, "increased")
+				modHasPrefix[modBaseName] = true
+			end
+			local modMult = (modIsIncrease and 1 or -1) * modDef.mult
+			if type(value) == 'table' then
+				-- Skill specific modifier
+				if modDiffBase[modBaseName] == nil then
+					modDiffBase[modBaseName] = {}
+				end
+				for j, subVal in ipairs(value) do
+					if type(subVal) == 'table' and subVal.skillID ~= nil then
+						modDiffBase[modBaseName][subVal.skillID] = (modDiffBase[modBaseName][subVal.skillID] or 0) + subVal.value * modMult
+					end
+				end
+			else
+				modDiffBase[modBaseName] = (modDiffBase[modBaseName] or 0) + value * modMult
+			end
+		end
+	end
+	-- Transform modDiffBase into modDiff with the appropriate mod name within the return value
+	for modBaseName, value in pairs(modDiffBase) do
+		if type(value) == 'table' then
+			-- Skill specific modifier
+			for skillID, subVal in pairs(value) do
+				local modName = nil
+				if modHasPrefix[modBaseName] then
+					modName = (subVal < 0 and 'decreased' or 'increased') .. modBaseName
+				else
+					modName = modBaseName
+				end
+				if modDiff[modName] == nil then
+					modDiff[modName] = {}
+				end
+				table.insert(modDiff[modName], { ["skillID"] = skillID, ["value"] = math.abs(subVal) })
+			end
+		else
+			local modName = nil
+			if modHasPrefix[modBaseName] then
+				modName = (value < 0 and 'decreased' or 'increased') .. modBaseName
+			else
+				modName = modBaseName
+			end
+			modDiff[modName] = (modDiff[modName] or 0) + math.abs(value)
+		end
+	end
+	return modDiff
 end