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generalize enemy iterators
Line 143:
Line 143:
local type = numberKey('type', context, n)
− local pred = function(e, i)
− return e:type() == type
− end
− local pre
-- * Enemy iterators.
-- * Enemy iterators.
−function Iterator.enemiesByType(context, n)
+function Iterator.enemiesBy(context, n, pred, pre)
local collection = U.imap(CollectionEnemy, function(name)
local collection = U.imap(CollectionEnemy, function(name)
return EnemyShip(name)
return EnemyShip(name)
Line 156:
Line 156:
end
end
end)
end)
− local i = 1
local i = 1
local current = nil
local current = nil
Line 191:
Line 186:
end,
end,
}
}
+end
+
+function Iterator.enemiesByType(context, n)
+ local type = numberKey('type', context, n)
+ return Iterator.enemiesBy(context, n, function(e)
+ return e:type() == type
+ end)
end
end