Fix Powerups not saving for spheres

src/Sphere.lua

@@ -29,9 +29,6 @@ function Sphere:new(sphereGroup, deserializationTable, color, shootOrigin, shoot
 	self.prevSphere = nil
 	self.nextSphere = nil
     self.offset = 0
-    -- Temporary value.
-    -- In the future this should be customizable per-level, and in case of ZBR
-	-- this shall be linked to a Power/Food.
 	self.powerupTimeout = 20
 
 	if deserializationTable then
@@ -200,14 +197,17 @@ end
 
 ---Adds a powerup to the current Sphere.
 ---@param powerup string
-function Sphere:addPowerup(powerup)
+---@param noSound boolean?
+function Sphere:addPowerup(powerup, noSound)
     if not powerup then
 		_Log:printt("Sphere", "No powerup defined when calling Sphere:addPowerup()")
 		return
 	end
 	if not (self:isGhost() or self:isOffscreen()) then
         self.powerup = powerup
-		_Game:playSound("sound_events/spawn_powerup_"..self.powerup..".json")
+		if not noSound then
+			_Game:playSound("sound_events/spawn_powerup_"..self.powerup..".json")
+		end
         self.entity:setPowerup(powerup)
     end
 end
@@ -668,7 +668,9 @@ end
 ---@return table
 function Sphere:serialize()
 	local t = {
-		color = self.color,
+        color = self.color,
+        powerup = self.powerup,
+		powerupTimeout = self.powerupTimeout,
 		--animationFrame = self.animationFrame, -- who cares about that, you can uncomment this if you do
 		shootOrigin = self.shootOrigin and {x = self.shootOrigin.x, y = self.shootOrigin.y} or nil,
 		shootTime = self.shootTime,
@@ -715,7 +717,8 @@ function Sphere:deserialize(t)
 	self.shootOrigin = t.shootOrigin and Vec2(t.shootOrigin.x, t.shootOrigin.y) or nil
 	self.shootTime = t.shootTime
 	self.ghostTime = t.ghostTime
-	self.powerup = t.currentPowerup
+	self.powerup = t.powerup
+	self.powerupTimeout = t.powerupTimeout
 
 	self.effects = {}
 	if t.effects then

src/SphereEntity.lua

@@ -50,6 +50,7 @@ end
 
 
 ---Sets the current powerup to be displayed on this Sphere Entity.
+---DO NOT CALL THIS OUTSIDE `Sphere.lua` - call `Sphere:addPowerup()` instead.
 ---@param powerup? string The powerup to be displayed, or `nil` if none.
 function SphereEntity:setPowerup(powerup)
 	self.powerup = powerup

src/SphereGroup.lua

@@ -1339,14 +1339,21 @@ function SphereGroup:deserialize(t)
 	self.spheres = {}
 	local offset = 0
 	for i, sphere in ipairs(t.spheres) do
+		---@type Sphere
 		local s = Sphere(self, sphere)
 		s.offset = offset
 		-- links are mandatory!!!
 		if i > 1 then
 			s.prevSphere = self.spheres[i - 1]
 			self.spheres[i - 1].nextSphere = s
 		end
-		table.insert(self.spheres, s)
+        table.insert(self.spheres, s)
+		if sphere.powerup then
+            s:addPowerup(sphere.powerup, true)
+            -- idk why it's nil by default when it's always defined as 20
+			-- until a powerup is given
+			s.powerupTimeout = sphere.powerupTimeout or 0
+		end
 		offset = offset + 29 * s.size
 	end
 	self.matchCheck = t.matchCheck