Instances within other instances

Hambil said:

If you want to say, loop through all units for all players then you would have an outside 'players' loop and an inside 'units' loop. If that's what you are asking? What are you trying to do, and where?

Click to expand...

Hambil said:

Here is a sample player/unit loop in one of my mods:

Code:

        for _, v in pairs(Players) do
		if v:IsHuman() then
			for u in v:Units() do
				if not u:IsCombatUnit() then
					gUnEscorted[u] = u:GetPlot()
				end
			end
		end
	end

Click to expand...

Hambil said:

My fault. I tend to assume people are looking for lua answers and that led me to think your mention of instance was just a random word confusion for [generic instance of a class], e.g. units, players. In this case it was my ignorance and instance actually meant something specific. So, I have learned, thank you

Click to expand...

whoward69 said:

StackedStacks.xml

Code:

<?xml version="1.0" encoding="UTF-8"?>
<Context Font="TwCenMT16" FontStyle="Base">
  <!-- The Civilisation instance - icon plus list of units -->
  <Instance Name="CivInstance">
    <Box ID="CivRoot" Anchor="L,T" Size="424,64" Color="0,0,0,255" >
      <Image ID="CivIconBG" Size="64,64" Anchor="L,T" TextureOffset="77,0" Texture="CivIconBGSizes.dds">
        <Image ID="CivIconShadow" Size="48,48" Anchor="C,C" Texture="CivSymbolAtlas48.dds" Color="Black,128"/>
        <Image ID="CivIcon" Size="48,48" Offset="-1,-1" Anchor="C,C" Texture="CivSymbolsColor512.dds" />
      </Image>

      <!-- Scroll panels within scroll panels fundamentally don't work -->
      <!-- Normal controls (text, images, boxes, etc) within a scroll panel are cropped to fit, but -->
      <!-- if ANY part of a scroll panel is visible the entire panel is shown -->
      <!-- which causes the inner panel to "bleed" outside the limits of the containing panel -->
      <ScrollPanel Anchor="L,T" ID="UnitPanel" Vertical="0" Offset="64,0" Size="360,64" AutoScrollBar="1">
        <UpButton   Anchor="L,B" Offset="0,0" Style="ScrollBarLeft"/>
        <ScrollBar  Anchor="L,B" Offset="18,0" Length="324" Style="ScrollBar"/>
        <!-- We cannot do the usual R,B alignment here as the RB corner is not always in view in the scroll panel-->
        <DownButton Anchor="L,B" Offset="342,0" Style="ScrollBarRight"/>

        <Stack ID="UnitStack" Anchor="L,T" Padding="0" StackGrowth="Right"/>
      </ScrollPanel>
    </Box>
  </Instance>

  <!-- The Unit instance - just the icon, we'll add a tooltip via Lua -->
  <Instance Name="UnitInstance">
    <Box ID="UnitRoot" Anchor="L,T" Size="45,45" Color="Black,255" >
      <Image ID="UnitIcon" Anchor="C,C" Size="45,45"/>
    </Box>
  </Instance>

  <!-- The main bounding box and scroll panel -->
  <Box Size="468,580" Anchor="C,C" Offset="0,0" Color="White,255">
    <Box Size="464,576" Anchor="C,C" Offset="0,0" Color="Black,255">
      <ScrollPanel Anchor="L,T" ID="CivPanel" Vertical="1" Size="464,576" AutoScrollBar="1">
        <UpButton   Anchor="R,T" Offset="2,2" Style="ScrollBarUp"/>
        <ScrollBar  Anchor="R,T" Offset="2,20" Length="536" Style="VertSlider"/>
        <DownButton Anchor="R,B" Offset="2,2" Style="ScrollBarDown"/>

        <Stack ID="CivStack" StackGrowth="B" Offset="0,0" Padding="0" />
      </ScrollPanel>
    </Box>
  </Box>
</Context>

StackedStacks.lua

Code:

--
-- A stack (civs) of stacks (units per civ)
--
-- Also illustrates why scroll panels within scroll panels are a complete nightmare!
--

-- Bring in the standard support utilities
include("IconSupport")
include("InstanceManager")

-- For each player, we need to track both the entry in the civ stack and the unit instance manager, so we'll need somewhere to put that information
local g_PlayerEntries = {}


function UpdateUnits()
  -- Hide everything in the current list of civs (will be nothing on the first invocation)
  for _, playerEntry in pairs(g_PlayerEntries) do
    playerEntry.civInstance.CivRoot:SetHide(true)
  end

  -- For every player that is still alive ...
  for iPlayer = 0, GameDefines.MAX_CIV_PLAYERS-1, 1 do
    local pPlayer = Players[iPlayer]
  
    if (pPlayer:IsEverAlive() and pPlayer:IsAlive()) then
      local playerEntry = g_PlayerEntries[iPlayer]

      -- Have we processed this player before?
      if (playerEntry == nil) then
        -- No, so create an array entry for them
        playerEntry = {}
        g_PlayerEntries[iPlayer] = playerEntry

        -- Create an entry for them in the stack of civs ...
        -- (Note that we are NOT using an InstanceManager for this,
        --  we must use the same unit IM every time for this entry,
        --  so we'll just manage both the entry and the unit IM ourselves)
        playerEntry.civInstance = {}
        ContextPtr:BuildInstanceForControl("CivInstance", playerEntry.civInstance, Controls.CivStack)

        -- ... and fill in the details ...
        CivIconHookup(iPlayer, 64, playerEntry.civInstance.CivIcon, playerEntry.civInstance.CivIconBG, playerEntry.civInstance.CivIconShadow, false, true);
        playerEntry.civInstance.CivRoot:SetHide(false) -- unnecessary unless Hidden="1" has been applied in the XML
        playerEntry.civInstance.CivIconBG:SetToolTipString(Locale.ConvertTextKey(pPlayer:GetCivilizationShortDescriptionKey()))

        -- ... and hook up a unit instance manager
          playerEntry.unitIM = InstanceManager:new("UnitInstance", "UnitRoot", playerEntry.civInstance.UnitStack)
      else
        -- Yes, so clear out any old units ...
        playerEntry.unitIM:ResetInstances()

        -- ... and show the entry (it was hidden in the loop at the beginning)
        playerEntry.civInstance.CivRoot:SetHide(false)
      end

      -- Fill in the current list of units for this player, standard stack filling stuff via an IM
      for pUnit in pPlayer:Units() do
        local unitInstance = playerEntry.unitIM:GetInstance()
        local unitInfo = GameInfo.Units[pUnit:GetUnitType()]
        IconHookup(unitInfo.PortraitIndex, 45, unitInfo.IconAtlas, unitInstance.UnitIcon)
        unitInstance.UnitIcon:SetToolTipString(pUnit:GetName())
      end

      -- Adjust the size of the unit stack and scroll panel (note that scroll panels within scroll panels do not work!)
      playerEntry.civInstance.UnitStack:CalculateSize();
      playerEntry.civInstance.UnitStack:ReprocessAnchoring();
      playerEntry.civInstance.UnitPanel:CalculateInternalSize()
    end
  end

  -- Adjust the size of the civ stack and scroll panel
  Controls.CivStack:CalculateSize();
  Controls.CivStack:ReprocessAnchoring();
  Controls.CivPanel:CalculateInternalSize()
end


function Show()
  ContextPtr:SetHide(false)
  UpdateUnits()
end

function Hide()
  ContextPtr:SetHide(true)
end

Show()

Click to expand...

daviiadams said:

Which returns the plot of every unescorted non-combat unit for the human player (?)

How would you then display the plot ID (for example) for all unescorted units, for all players in the UI?

So you end up with:

Player 1: U U U
Player 2: U U
Player 3: U U U U

Where each "U" is the plot ID for each unescorted unit, for that player. At the moment, I would end up with s result like:

Player 1: U U U U U U U U U
Player 2:
Player 3:

Obviously, you'd want the instances of plot IDs for the unescorted units to appear next to their relivant player, not all in one continuous row attached to the first player entry and it's that "moving to the next line" bit that eludes me.

Click to expand...

       for p, v in pairs(Players) do
           for u in v:Units() do
		if not u:IsCombatUnit() then
			gUnEscorted[] = { p, u }
		end
	   end
	end

Hambil said:

array[] = whatever

Does not appear to work in lua (my PHP is showing). So, you'd need to add an iterator. e.g. array = whatever

Click to expand...

daviiadams said:

Out of interest, is it not necessary to destroy all children for the build instance for control part in that example?

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whoward69 said:

No, because we re-use them.

First time around, add a new instance for each civ, and remember which civ got what instance

Second time around, hide all the instances (in case a civ has been killed) and then for each civ that is still alive unhide their specific instance and reuse it

Click to expand...