Add code for repeating waves of enemies, adding intro animations so the enemies can 'fly in', and refactor entity to use a state machine system for more flexibility.

src/main.lua

@@ -9,13 +9,15 @@ import "CoreLibs/graphics"
 import "CoreLibs/sprites"
 import "CoreLibs/timer"
 import "kani"
-import "enemy/ika"
-import "enemy/ebi"
+import "enemies"
+import "wave"
 
 local gfx <const> = playdate.graphics
+local geom <const> = playdate.geometry
 
 local player = nil
 local ui = nil
+local currentWave = nil
 
 function setup()
    ui = UI()
@@ -24,26 +26,8 @@ function setup()
    player:addInputHandlers()
    player:add()
    ui:add()
-
-   local enemy = Ika(player)
-   enemy:moveTo(350, 120)
-   enemy:add()
-
-   -- enemy = Ebi()
-   -- enemy:moveTo(270, 50)
-   -- enemy:add()
-
-   -- enemy = Ebi()
-   -- enemy:moveTo(280, 100)
-   -- enemy:add()
-
-   -- enemy = Ebi()
-   -- enemy:moveTo(290, 150)
-   -- enemy:add()
-
-   -- enemy = Ebi()
-   -- enemy:moveTo(300, 200)
-   -- enemy:add()
+   currentWave = newWave()
+   currentWave:add()
 
    makeWalls()
    drawBackground()
@@ -81,8 +65,52 @@ function drawBackground()
    )
 end
 
+-- Right now we only have a single wave and we repeat it forever
+function newWave()
+   wave = Wave.new()
+
+   local startPosition = geom.point.new(410,120)
+
+   local enemy = Ika(player)
+   enemy.introAnimator = gfx.animator.new(
+      10000,
+      startPosition,
+      geom.point.new(350,120)
+   )
+
+   wave:addEntity(enemy)
+
+   local y = 50
+   for x=270, 300, 10 do
+      local dir = 1
+      if math.random(2) == 1 then
+         dir = -1
+      end
+      local vector = geom.vector2D.new(0, dir)
+
+      enemy = Ebi()
+      enemy.vector = vector
+      enemy.introAnimator = gfx.animator.new(
+         5000,
+         startPosition,
+         geom.point.new(x,y)
+      )
+
+      wave:addEntity(enemy)
+
+      y += 50
+   end
+
+   return wave
+end
+
 function playdate.update()
    gfx.sprite.update()
+   if currentWave:update() then
+      -- fight forever lol
+      currentWave = newWave()
+      currentWave:add()
+   end
    playdate.timer.updateTimers()
 end