Press down to drop;

map.lua

@@ -21,7 +21,7 @@ function Map:update()
   ctx.view.xmax = self:getMaxX()
 
   table.each(self.obstacles, function(obstacle)
-    if ctx.pigeon.body:getY() + ctx.pigeon.shapeSize / 2 > obstacle.body:getY() - obstacle.height / 2 then
+    if (love.keyboard.isDown('down') and ctx.pigeon.downDirty > 0) or ctx.pigeon.body:getY() + ctx.pigeon.shapeSize / 2 > obstacle.body:getY() - obstacle.height / 2 then
       obstacle.fixture:setCategory(ctx.categories.oneWayPlatform)
     else
       obstacle.fixture:setCategory(ctx.categories.ground)

pigeon.lua

@@ -90,6 +90,7 @@ function Pigeon:init()
   }
 
   self.drop = nil
+  self.downDirty = 0
 
   self:initBeak()
   self:initFeet()
@@ -106,6 +107,12 @@ function Pigeon:update()
 
   self.animation.speed = love.keyboard.isDown('s') and 2 or 1
 
+  if love.keyboard.isDown('down') then
+    self.downDirty = timer.rot(self.downDirty)
+  else
+    self.downDirty = .1
+  end
+
   self:updateBeak()
   self:updateFeet()
 end
@@ -407,16 +414,12 @@ function Pigeon.walk:update()
 
   if love.keyboard.isDown('up') then
     return self:changeState('air')
-  elseif love.keyboard.isDown('down') then
+  elseif love.keyboard.isDown(' ') then
     self:changeState('peck')
   end
 
   if left or right then
     self:move()
-  elseif love.keyboard.isDown(' ') then
-    self:changeState('laser')
-  else
-    return self:changeState('idle').update(self)
   end
 end