Fix defend state, add animation tables (not used quite yet), and add onExit functions to the state machine.

src/kani.lua

@@ -69,25 +69,7 @@ function Kani:init(ui)
    -- the UI gets passed in to Kani so that we can update pieces of it easily.
    self.ui = ui
 
-   self.inputHandlers = {
-      upButtonDown =    function() self.vector.dy = -3 end,
-      downButtonDown =  function() self.vector.dy = 3 end,
-      leftButtonDown =  function() self.vector.dx = -3 end,
-      rightButtonDown = function() self.vector.dx = 3 end,
-      upButtonUp =      function() self.vector.dy = 0 end,
-      downButtonUp =    function() self.vector.dy = 0 end,
-      leftButtonUp =    function() self.vector.dx = 0 end,
-      rightButtonUp =   function() self.vector.dx = 0 end,
-      cranked = function(change, accelChange) self:chargeReserve(change) end,
-      AButtonDown = function()
-         self.firingTimer = playdate.timer.keyRepeatTimerWithDelay(self.weaponChargeSpeed / 2,
-                                                                   self.weaponChargeSpeed,
-                                                                   self.chargeShot, self)
-      end,
-      AButtonUp = function() self:fire() end,
-   }
-
-   self.fsm:changeState("READY")
+   self.fsm:addState("DEFEND", self.runDefend, self.onDefend, self.onDefendExit)
 end
 
 function Kani:chargeReserve(change)
@@ -138,24 +120,65 @@ end
 function Kani:damage(amount)
    Kani.super.damage(self, amount)
    self.ui.healthMeter:setValue(self.health)
-
+   print("Kani health now at " .. self.health) -- debug
    if self.health == 0 then
       -- TODO: end game here
    end
 end
 
-function Kani:addInputHandlers()
-   playdate.inputHandlers.push(self.inputHandlers)
-end
-
-function Kani:removeInputHandlers()
-   playdate.inputHandlers.pop()
-end
-
 -- move that crab!
 function Kani:runReady()
+   -- input handling
+   if playdate.buttonIsPressed(playdate.kButtonDown) then
+      self.vector.dy = 3
+   elseif playdate.buttonIsPressed(playdate.kButtonUp) then
+      self.vector.dy = -3
+   else
+      self.vector.dy = 0
+   end
+
+   if playdate.buttonIsPressed(playdate.kButtonLeft) then
+      self.vector.dx = -3
+   elseif playdate.buttonIsPressed(playdate.kButtonRight) then
+      self.vector.dx = 3
+   else
+      self.vector.dx = 0
+   end
+
+   local change = select(1, playdate.getCrankChange())
+   self:chargeReserve(change)
+
+   if playdate.buttonJustPressed(playdate.kButtonA) then
+      self.firingTimer = playdate.timer.keyRepeatTimerWithDelay(self.weaponChargeSpeed / 2,
+                                                                self.weaponChargeSpeed,
+                                                                self.chargeShot, self)
+   end
+   if playdate.buttonJustReleased(playdate.kButtonA) then
+      self:fire()
+   end
+
+   if playdate.buttonIsPressed(playdate.kButtonB) then
+      print("Triggering entrance to DEFEND mode")
+      self.fsm:changeState("DEFEND")
+   end
+
+   -- collision handling
    local collisions = Kani.super.runReady(self)
    for i=0, #collisions, 1 do
       -- TODO: handle player-triggered collisions
    end
 end
+
+function Kani:onDefend()
+   self.armor = 5
+end
+
+function Kani:onDefendExit()
+   self.armor = 0
+end
+
+function Kani:runDefend()
+   if not playdate.buttonIsPressed(playdate.kButtonB) then
+      self.fsm:changeState("READY")
+   end
+end