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-- RST
-- objective_utils.lua
-- ---------------------
--
-- This script contains utility functions for typical tasks that need to
-- be checked for objectives.
-- =======================================================================
-- PRIVATE FUNCTIONS
-- =======================================================================
function _check_for_region(plr, which, region)
local carr = {}
for idx,f in ipairs(region) do
if f.immovable and f.immovable.owner == plr then
if carr[f.immovable.name] == nil then
carr[f.immovable.name] = 1
else
carr[f.immovable.name] = carr[f.immovable.name] + 1
end
end
end
for house,count in pairs(which) do
if carr[house] == nil or carr[house] < count then
return false
end
end
return true
end
-- RST
-- .. function:: check_for_buildings(plr, which[, region])
--
-- Checks if the number of buildings defined in which are found for the
-- given player. If region is given, buildings are only searched on the
-- corresponding fields. If more buildings or equal the number of requested
-- buildings are found, this function returns true.
--
-- Example usage:
--
-- .. code-block:: lua
--
-- check_for_buildings(wl.Game().players[1], {lumberjacks_hut=2, quarry=1})
--
-- :arg plr: Player to check for
-- :type plr: :class:`wl.game.Player`
-- :arg region: array of fields to check for the buildings
-- :type region: :class:`array` of :class:`wl.map.Field`
-- :arg which: (name,count) pairs for buildings to check for.
-- :type which: :class:`table`
--
-- :returns: true if the requested buildings were found, false otherwise
function check_for_buildings(plr, which, region)
if region then return _check_for_region(plr, which, region) end
for house, count in pairs(which) do
if #plr:get_buildings(house) < count then return false end
end
return true
end
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