From 4150516dc6de5345d79a63e9aa77fcf4716ec71a Mon Sep 17 00:00:00 2001
From: PhatPhuckDave <david.majdandzic@hotmail.com>
Date: Mon, 31 Mar 2025 00:22:49 +0200
Subject: [PATCH] Add zoomies

---
 QuickStackToBag/Lua/Autorun/init.lua |   1 +
 QuickStackToBag/Lua/Cyka/utils.lua   |   8 +-
 QuickStackToBag/Lua/Cyka/zoom.lua    | 106 +++++++++++++++++++++++++++
 3 files changed, 114 insertions(+), 1 deletion(-)
 create mode 100644 QuickStackToBag/Lua/Cyka/zoom.lua

diff --git a/QuickStackToBag/Lua/Autorun/init.lua b/QuickStackToBag/Lua/Autorun/init.lua
index e8efb17..5f350d9 100644
--- a/QuickStackToBag/Lua/Autorun/init.lua
+++ b/QuickStackToBag/Lua/Autorun/init.lua
@@ -62,6 +62,7 @@ local cursormacroer = require("Cyka.cursormacroer")
 local quickunload = require("Cyka.quickunload")
 local quickreload= require("Cyka.quickreload")
 require("Cyka.xpticker")
+require("Cyka.zoom")
 
 print(MyModGlobal.MOD_NAME .. " v" .. MyModGlobal.MOD_VERSION .. " loaded!")
 
diff --git a/QuickStackToBag/Lua/Cyka/utils.lua b/QuickStackToBag/Lua/Cyka/utils.lua
index 8d3bc01..821e187 100644
--- a/QuickStackToBag/Lua/Cyka/utils.lua
+++ b/QuickStackToBag/Lua/Cyka/utils.lua
@@ -312,9 +312,14 @@ local function getSlotsUnderCursor()
     for _, container in ipairs(openContainers) do
         local containerInventories = container.OwnInventories
         for containerInventory in containerInventories do
+            local slot
+            if not containerInventory or not containerInventory.visualSlots then
+                MyModGlobal.debugPrint("Container inventory has no visual slots")
+                goto continue
+            end
             for i, visualSlot in ipairs(containerInventory.visualSlots) do
                 if visualSlot:MouseOn() then
-                    local slot = containerInventory.slots[i]
+                    slot = containerInventory.slots[i]
                     mouseoverSlots[#mouseoverSlots + 1] = {
                         inventory = containerInventory,
                         slotIndex = i,
@@ -322,6 +327,7 @@ local function getSlotsUnderCursor()
                     }
                 end
             end
+            ::continue::
         end
     end
 
diff --git a/QuickStackToBag/Lua/Cyka/zoom.lua b/QuickStackToBag/Lua/Cyka/zoom.lua
new file mode 100644
index 0000000..59bba79
--- /dev/null
+++ b/QuickStackToBag/Lua/Cyka/zoom.lua
@@ -0,0 +1,106 @@
+-- luacheck: globals SERVER Hook Keys LuaUserData PlayerInput Character Descriptors
+-- luacheck: max line length 420
+if SERVER then return end
+
+local isToggle = true     -- toggle or hold behaviour
+local smoothZoom = false  -- smooth or step
+
+local zStep = 0.5         -- step size for when smoothZoom=false
+local zSpeed = 0.02       -- speed for when smoothZoom=true
+local zMin = 0.1          -- minimum zoom modifier
+local zMax = 2.5          -- maximum zoom modifier
+local zStart = 1.5        -- default zoom level
+
+local zKey = Keys.P       -- zoom key
+local dKey = Keys.NumPad1 -- decrease zoom key
+local iKey = Keys.NumPad2 -- increase zoom key
+local rKey = Keys.Back    -- reset zoom key
+-- customization end
+--end
+
+local zoomOn = false -- default zoom state
+local gzsDefault = false
+zStart = math.max(math.min(zMax, zStart), zMin)
+local gzsNew = zStart
+local gzsMin = zMin
+local gzsMax = zMax
+local gzsUpd = false
+
+local dHeld = false
+local iHeld = false
+local zHeld = false
+
+LuaUserData.MakeFieldAccessible(Descriptors["Barotrauma.Camera"], "globalZoomScale")
+LuaUserData.MakeMethodAccessible(Descriptors["Barotrauma.Camera"], "CreateMatrices")
+
+Hook.HookMethod("Barotrauma.Camera", "CreateMatrices", function(instance, _)
+	gzsDefault = instance.globalZoomScale
+	gzsMin = math.max(zMin, gzsDefault * zMin)
+	gzsMax = math.min(zMax, gzsDefault * zMax)
+	gzsNew = math.max(math.min(gzsMax, gzsDefault * zStart), gzsMin)
+	gzsUpd = true
+	instance.MinZoom = math.min(gzsMin / 2, instance.MinZoom)
+	instance.MaxZoom = math.max(gzsMax * 2, instance.MaxZoom)
+end, Hook.HookMethodType.After)
+
+Hook.HookMethod("Barotrauma.Character", "ControlLocalPlayer", function(_, ptable)
+	gzsUpd = false
+	if not gzsDefault then
+		ptable.cam.CreateMatrices()
+	else
+		if not Character.DisableControls and Character.Controlled then
+			if zoomOn then
+				if PlayerInput.KeyDown(dKey) then
+					if smoothZoom then
+						gzsNew = math.max(gzsMin, gzsNew * (1 - zSpeed))
+						gzsUpd = true
+					elseif not dHeld then
+						gzsNew = math.max(gzsMin, gzsNew - zStep)
+						dHeld = true
+						gzsUpd = true
+					end
+				else
+					dHeld = false
+				end
+				if PlayerInput.KeyDown(iKey) then
+					if smoothZoom then
+						gzsNew = math.min(gzsMax, gzsNew * (1 + zSpeed))
+						gzsUpd = true
+					elseif not iHeld then
+						gzsNew = math.min(gzsMax, gzsNew + zStep)
+						iHeld = true
+						gzsUpd = true
+					end
+				else
+					iHeld = false
+				end
+				if PlayerInput.KeyDown(rKey) then
+					gzsNew = gzsDefault * zStart
+					gzsUpd = true
+				end
+			end
+			if PlayerInput.KeyDown(zKey) then
+				if isToggle then
+					if not zHeld then
+						zoomOn = not zoomOn
+						zHeld = true
+						gzsUpd = true
+					end
+				else
+					zoomOn = true
+					gzsUpd = true
+				end
+			elseif isToggle then
+				zHeld = false
+			elseif zoomOn then
+				zoomOn = false
+				gzsUpd = true
+			end
+		else
+			zoomOn = false
+		end
+		if gzsUpd then
+			ptable.cam.globalZoomScale = zoomOn and gzsNew or gzsDefault
+		end
+	end
+end, Hook.HookMethodType.After)