basic stacking hats pattern and basic woody ennemy

scripts/battle/waves/stackinghats.lua

@@ -0,0 +1,50 @@
+local StackingHats, super = Class(Wave)
+
+function StackingHats:init()
+    super.init(self)
+
+    -- The duration of our wave, in seconds. (Defaults to `5`)
+    self.time = 10
+    self.count = 0
+    
+end
+
+function StackingHats:onStart()
+    -- code here gets called at the start of the wave
+        -- create a bullet in the center of the screen
+    arena = Game.battle.arena
+    arenaX, arenaY = arena:getBottomLeft()
+    arenaX2, arenaY2 = arena:getBottomRight()
+    self.collider = LineCollider(self, arenaX, arenaY, arenaX2, arenaY2)
+    self.timer:everyInstant(1, function()
+
+        local x = SCREEN_WIDTH / 2
+        local y = arena:getTop() * 0.5
+        self.bullets[self.count] = self:spawnBullet("hatbulllet", x, y)
+        -- set the bullet's speed to 4 (pixels per 1/30th second)
+        self.bullets[self.count].physics.speed = 4
+        self.count = self.count + 1
+    end)
+    super.onStart(self)
+end
+
+function StackingHats:update()
+    -- code here gets called every frame  
+
+    for i = 0, self.count -1, 1 do
+        for j = 0, i-1, 1 do
+            if (i ~= j) then
+                if (self.bullets[i].collider:collidesWith(self.bullets[j])) then
+                    self.bullets[i].physics.speed = 0
+                end
+            end
+        end
+        if (self.bullets[i].collider:collidesWith(self)) then
+            self.bullets[i].physics.speed = 0
+        end
+    end
+
+    super.update(self)
+end
+
+return StackingHats