Added medium transport weight. Weights are now.

 * [0, 500] = Light
 * (500, 1000] = Medium (ie Jack, Skuttle, Felon, Phantom, Minotaur, Emissary, Lance, Impaler, Siren, Envoy,  Aspis, Iris, Djinn)
 * (1000, inf) = Heavy

Transport speeds are.
 * Charon transports Light/Medium at 70%/50% speed.
 * Hercules transports Light/Medium/Heavy at 75%/65%/50% speed.
The heavy/light speeds were not changed.

LuaRules/Configs/constants.lua

@@ -1,2 +1,4 @@
 HIDDEN_STORAGE = 10000 -- hidden storage: it will spend all energy above (storage - hidden_storage)
 TEAM_SLOWUPDATE_RATE = 30
+TRANSPORT_LIGHT_COST_MAX = 500
+TRANSPORT_MEDIUM_COST_MAX = 1000

LuaRules/Gadgets/unit_transport_speed.lua

@@ -23,16 +23,20 @@ end
 
 local mass = {}
 local requireHeavy = {}
+local requireMedium = {}
 local lightSpeed = {}
+local mediumSpeed = {}
 local heavySpeed = {}
 
 for i = 1, #UnitDefs do
 	local ud = UnitDefs[i]
 	mass[i] = ud.mass
 	requireHeavy[i] = (ud.customParams.requireheavytrans and true) or false
+	requireMedium[i] = (ud.customParams.requiremediumtrans and true) or false
 
 	if ud.transportCapacity and (ud.transportCapacity > 0) then
 		lightSpeed[i] = tonumber(ud.customParams.transport_speed_light or "1")
+		mediumSpeed[i] = tonumber(ud.customParams.transport_speed_medium or "1")
 		heavySpeed[i] = tonumber(ud.customParams.transport_speed_heavy or "1")
 	end
 end
@@ -46,6 +50,9 @@ local function GetSpeedFactor(tudid, unitDefID, effectiveMass)
 	if requireHeavy[unitDefID] then
 		return heavySpeed[tudid] or 1
 	end
+	if requireMedium[unitDefID] then
+		return mediumSpeed[tudid] or 1
+	end
 	return lightSpeed[tudid] or 1
 end
 

LuaUI/Widgets/gui_contextmenu.lua

@@ -1160,9 +1160,13 @@ local function printAbilities(ud, unitID)
 
 	if ud.transportCapacity and (ud.transportCapacity > 0) then
 		cells[#cells+1] = 'Transport: '
-		cells[#cells+1] = ((ud.customParams.islighttransport) and "Light" or "Heavy")
+		cells[#cells+1] = (((ud.customParams.islightonlytransport) and "Light") or ((ud.customParams.islighttransport) and "Medium") or "Heavy")
 		cells[#cells+1] = 'Light Speed: '
 		cells[#cells+1] = math.floor((tonumber(ud.customParams.transport_speed_light or "1")*100) + 0.5) .. "%"
+		if not ud.customParams.islightonlytransport then
+			cells[#cells+1] = 'Medium Speed: '
+			cells[#cells+1] = math.floor((tonumber(ud.customParams.transport_speed_medium or "1")*100) + 0.5) .. "%"
+		end
 		if not ud.customParams.islighttransport then
 			cells[#cells+1] = 'Heavy Speed: '
 			cells[#cells+1] = math.floor((tonumber(ud.customParams.transport_speed_heavy or "1")*100) + 0.5) .. "%"
@@ -1550,7 +1554,7 @@ local function printunitinfo(ud, buttonWidth, unitID)
 	-- transportability by light or heavy airtrans
 	if not (ud.canFly or ud.cantBeTransported) then
 		statschildren[#statschildren+1] = Label:New{ caption = 'Transportable: ', textColor = color.stats_fg, }
-		statschildren[#statschildren+1] = Label:New{ caption = ((ud.customParams.requireheavytrans and "Heavy") or "Light"), textColor = color.stats_fg, }
+		statschildren[#statschildren+1] = Label:New{ caption = ((ud.customParams.requireheavytrans and "Heavy") or (ud.customParams.requiremediumtrans and "Medium") or "Light"), textColor = color.stats_fg, }
 	end
 
 	if isCommander then

gamedata/unitdefs_post.lua

@@ -12,7 +12,6 @@ Spring.Echo("Loading UnitDefs_posts")
 --
 
 VFS.Include("LuaRules/Configs/constants.lua")
-local TRANSPORT_LIGHT_COST_MAX = 1000
 
 --------------------------------------------------------------------------------
 --------------------------------------------------------------------------------
@@ -941,8 +940,13 @@ end
 if Utilities.IsCurrentVersionNewerThan(104, 600) then
 	for name, ud in pairs (UnitDefs) do
 		ud.transportmass = nil
-		if ud.buildcostmetal and tonumber(ud.buildcostmetal) > TRANSPORT_LIGHT_COST_MAX then
-			ud.customparams.requireheavytrans = 1
+		local buildCost = ud.buildcostmetal and tonumber(ud.buildcostmetal)
+		if buildCost then
+			if buildCost > TRANSPORT_MEDIUM_COST_MAX then
+				ud.customparams.requireheavytrans = 1
+			elseif buildCost > TRANSPORT_LIGHT_COST_MAX then
+				ud.customparams.requiremediumtrans = 1
+			end
 		end
 	end
 else

units/gunshipheavytrans.lua

@@ -29,6 +29,8 @@ return { gunshipheavytrans = {
     midposoffset   = [[0 0 0]],
     aimposoffset   = [[0 10 0]],
     modelradius    = [[15]],
+    transport_speed_light   = [[0.75]],
+    transport_speed_medium  = [[0.65]],
     transport_speed_heavy   = [[0.5]],
   },
 

units/gunshiptrans.lua

@@ -29,7 +29,8 @@ return { gunshiptrans = {
     midposoffset      = [[0 0 0]],
     modelradius       = [[15]],
     transport_speed_light   = [[0.7]],
-    islighttransport  = 1,
+    transport_speed_medium  = [[0.5]],
+    islighttransport  = 1, -- Actually maybe this needs to be kept as is, how does Circuit handle it?
   },
 
   explodeAs           = [[GUNSHIPEX]],