Add new enemy, refactor a bit, add armor.

src/main.lua

@@ -9,7 +9,8 @@ import "CoreLibs/graphics"
 import "CoreLibs/sprites"
 import "CoreLibs/timer"
 import "kani"
-import "ika"
+import "enemy/ika"
+import "enemy/ebi"
 
 local gfx <const> = playdate.graphics
 
@@ -28,6 +29,22 @@ function setup()
    enemy:moveTo(350, 120)
    enemy:add()
 
+   enemy = Ebi()
+   enemy:moveTo(300, 50)
+   enemy:add()
+
+   enemy = Ebi()
+   enemy:moveTo(300, 100)
+   enemy:add()
+
+   enemy = Ebi()
+   enemy:moveTo(300, 150)
+   enemy:add()
+
+   enemy = Ebi()
+   enemy:moveTo(300, 200)
+   enemy:add()
+
    makeWalls()
    
    drawBackground()