Ability to limit soldiers / vehicles at a pickup zone.

CTLD.lua

@@ -10,7 +10,7 @@
 
     See https://github.com/ciribob/DCS-CTLD for a user manual and the latest version
 
-    Version: 1.26 - 27/07/2015  - Added new parameter to Mission Editor added beacons so they can be named
+    Version: 1.27 - 29/08/2015  - Added new optional parameter to a pickupzone setup to limit the number of groups that can be loaded
                                 
                                 
 
@@ -100,6 +100,9 @@ ctld.JTAC_lock = "all" -- "vehicle" OR "troop" OR "all" forces JTAC to only lock
 
 -- Use any of the predefined names or set your own ones
 
+-- You can add number as a third option to limit the number of soldier or vehicle groups that can be loaded from a zone.
+-- Dropping back a group at a limited zone will add one more to the limit
+
 
 ctld.pickupZones = {
     { "pickzone1", "blue" },
@@ -110,8 +113,8 @@ ctld.pickupZones = {
     { "pickzone6", "none" },
     { "pickzone7", "none" },
     { "pickzone8", "none" },
-    { "pickzone9", "none" },
+    { "pickzone9", "none", 5 }, -- limits pickup zone 9 to 5 groups of soldiers or vehicles
-    { "pickzone10", "none" },
+    { "pickzone10", "none", 10 },  -- limits pickup zone 10 to 10 groups of soldiers or vehicles
 }
 
 ctld.dropOffZones = {
@@ -1208,7 +1211,7 @@ function ctld.loadUnloadTroops(_args)
         return
     end
 
-    local _inZone = ctld.inPickupZone(_heli)
+    local _zone = ctld.inPickupZone(_heli)
 
     -- first check for extractable troops regardless of if we're in a zone or not
 
@@ -1244,7 +1247,7 @@ function ctld.loadUnloadTroops(_args)
         end
     end
 
-    if _inZone == true and ctld.troopsOnboard(_heli, _troops) then
+    if _zone.inZone == true and ctld.troopsOnboard(_heli, _troops) then
 
         if _troops then
             ctld.displayMessageToGroup(_heli, "Dropped troops back to base", 20)
@@ -1255,13 +1258,25 @@ function ctld.loadUnloadTroops(_args)
             ctld.inTransitTroops[_heli:getName()].vehicles = nil
         end
 
-    elseif _inZone == false and ctld.troopsOnboard(_heli, _troops) then
+        -- increase zone counter by 1
+        ctld.updateZoneCounter(_zone.index,1)
+
+
+    elseif _zone.inZone == false and ctld.troopsOnboard(_heli, _troops) then
 
         ctld.deployTroops(_heli, _troops)
 
-    elseif _inZone == true and not ctld.troopsOnboard(_heli, _troops) then
+    elseif _zone.inZone == true and not ctld.troopsOnboard(_heli, _troops) then
+
+        if _zone.limit -1 >= 0 then
+            -- decrease zone counter by 1
+            ctld.updateZoneCounter(_zone.index,-1)
+
+            ctld.loadTroops(_heli, _troops)
+        else
+            ctld.displayMessageToGroup(_heli, "This area has no more reinforcements available!", 20)
+        end
 
-        ctld.loadTroops(_heli, _troops)
     else
         -- search for nearest troops to pickup
         ctld.extractTroops(_heli, _troops)
@@ -2093,7 +2108,7 @@ function ctld.createRadioBeacon(_point, _coalition, _country, _name, _batteryTim
     local _message = _name
 
     if _isFOB then
-      --  _message = "FOB " .. _message
+        --  _message = "FOB " .. _message
         _battery = -1 --never run out of power!
     end
 
@@ -3043,12 +3058,12 @@ end
 function ctld.inPickupZone(_heli)
 
     if ctld.inAir(_heli) then
-        return false
+        return {inZone = false,limit = -1,index = -1}
     end
 
     local _heliPoint = _heli:getPoint()
 
-    for _, _zoneDetails in pairs(ctld.pickupZones) do
+    for _i, _zoneDetails in pairs(ctld.pickupZones) do
 
         local _triggerZone = trigger.misc.getZone(_zoneDetails[1])
 
@@ -3059,7 +3074,7 @@ function ctld.inPickupZone(_heli)
             local _dist = ctld.getDistance(_heliPoint, _triggerZone.point)
 
             if _dist <= _triggerZone.radius then
-                return true
+                return {inZone = true,limit = _zoneDetails[3],index=_i}
             end
         end
     end
@@ -3074,13 +3089,13 @@ function ctld.inPickupZone(_heli)
         local _dist = ctld.getDistance(_heliPoint, _fob:getPoint())
 
         if _dist <= 150 then
-            return true
+            return {inZone = true,limit= 10000,index=-1};
         end
     end
 
 
 
-    return false
+    return {inZone = false,limit= -1,index=-1};
 end
 
 function ctld.getSpawnedFobs(_heli)
@@ -3244,13 +3259,24 @@ function ctld.isJTACUnitType(_type)
     return false
 end
 
+function ctld.updateZoneCounter(_index,_diff)
+
+    if ctld.pickupZones[_index] ~= nil then
+
+        ctld.pickupZones[_index][3] =   ctld.pickupZones[_index][3]+_diff
+
+      --  env.info(ctld.pickupZones[_index][1].." = " ..ctld.pickupZones[_index][3])
+    end
+
+
+end
 
 
 -- checks the status of all AI troop carriers and auto loads and unloads troops
 -- as long as the troops are on the ground
 function ctld.checkAIStatus()
 
-    timer.scheduleFunction(ctld.checkAIStatus, nil, timer.getTime() + 5)
+    timer.scheduleFunction(ctld.checkAIStatus, nil, timer.getTime() + 2)
 
     for _, _unitName in pairs(ctld.transportPilotNames) do
 
@@ -3259,7 +3285,8 @@ function ctld.checkAIStatus()
         if _unit ~= nil and _unit:getPlayerName() == nil then
 
             -- no player name means AI!
-            if ctld.inPickupZone(_unit) and not ctld.troopsOnboard(_unit, true) then
+            local _zone = ctld.inPickupZone(_unit)
+            if _zone.inZone == true and not ctld.troopsOnboard(_unit, true) then
 
                 -- first check for extractable troop in the pickup zone
                 local _extract
@@ -3274,7 +3301,15 @@ function ctld.checkAIStatus()
                     -- search for nearest troops to pickup
                     ctld.extractTroops(_unit,true)
                 else
-                    ctld.loadTroops(_unit, true)
+
+                    --only allow if zone has units
+                    if  _zone.limit - 1 >= 0 then
+
+                        ctld.updateZoneCounter(_zone.index,-1)
+
+                        ctld.loadTroops(_unit, true)
+                    end
+
                 end
 
             elseif ctld.inDropoffZone(_unit) and ctld.troopsOnboard(_unit, true) then
@@ -3284,7 +3319,8 @@ function ctld.checkAIStatus()
 
             if ctld.unitCanCarryVehicles(_unit) then
 
-                if ctld.inPickupZone(_unit) and not ctld.troopsOnboard(_unit, false) then
+                local _zone = ctld.inPickupZone(_unit)
+                if _zone.inZone == true and not ctld.troopsOnboard(_unit, false) then
 
                     -- first check for extractable vehicles in the pickup zone
                     local _extract
@@ -3299,7 +3335,13 @@ function ctld.checkAIStatus()
                         -- search for nearest vehicles to pickup
                         ctld.extractTroops(_unit,false)
                     else
-                        ctld.loadTroops(_unit, false)
+                        --only allow if zone has units
+                        if  _zone.limit - 1 >= 0 then
+
+                            ctld.updateZoneCounter(_zone.index,-1)
+
+                            ctld.loadTroops(_unit, false)
+                        end
                     end
 
                 elseif ctld.inDropoffZone(_unit) and ctld.troopsOnboard(_unit, false) then
@@ -4317,6 +4359,13 @@ for _, _zone in pairs(ctld.pickupZones) do
     else
         _zone[2] = -1 -- no smoke colour
     end
+
+    -- add in counter for troops or units
+    if _zone[3] == nil then
+        _zone[3] = 10000;
+    end
+
+
 end
 
 

README.md

@@ -328,6 +328,8 @@ the mission but there can be a delay of up to 30 seconds after activation for th
 Pickup zones are used by transport aircraft and helicopters to load troops and vehicles. A transport unit must be inside of the radius of the trigger in order to load troops and vehicles.
 The pickup zone needs to be named the same as one of the pickup zones in the ```ctld.pickupZones``` list or the list can be edited to match the name in the mission editor.
 
+Pickup Zones can be configured to limit the number of vehicle or troop groups that can be loaded. To add a limit, add a third parameter after the smoke colour as shown in the example below.
+
 ```lua
 ctld.pickupZones = {
     { "pickzone1", "blue" },
@@ -338,8 +340,8 @@ ctld.pickupZones = {
     { "pickzone6", "none" },
     { "pickzone7", "none" },
     { "pickzone8", "none" },
-    { "pickzone9", "none" },
+  { "pickzone9", "none", 5 }, -- limits pickup zone 9 to 5 groups of soldiers or vehicles
-    { "pickzone10", "none" },
+    { "pickzone10", "none", 10 },  -- limits pickup zone 10 to 10 groups of soldiers or vehicles
 }
 ```