feat: add revival support

sonic-radiance.love/scenes/battlesystem/actors/hero.lua

@@ -31,6 +31,13 @@ function Hero:die()
   end
 end
 
+function Hero:revive()
+  if (self.isKo) then
+    self:changeAnimation("idle")
+    self.isKo = false
+  end
+end
+
 function Hero:setAsKo()
   self:changeAnimation("ko")
   self.isKo = true

sonic-radiance.love/scenes/battlesystem/controllers/fighters/parent.lua

@@ -40,10 +40,19 @@ function FighterParent:setPP(value, relative)
 end
 
 function FighterParent:applyDeath()
-  if ((not self.abstract:isAlive()) and self.isAlive) then
+  if (self.abstract:isAlive() ~= self.isAlive ) then
+    if (self.abstract:isAlive()) then
+      self:revive()
+    else
       self:die()
     end
   end
+end
+
+function FighterParent:revive()
+  self.isAlive = true
+  self.actor:revive()
+end
 
 function FighterParent:die()
   self.isAlive = false