95 lines
1.9 KiB
Lua
95 lines
1.9 KiB
Lua
local filter = {}
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filter.registered_filter = {}
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--- API
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function filter.get(name)
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return filter.registered_filter[name]
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end
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function filter.register_filter(def)
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assert(def.name, "filter needs a name")
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assert(def.filter_func, "filter function required")
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assert(not filter.registered_filter[def.name], "filter already exists")
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local self = def
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function self:check_item_by_name(itemname)
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return self.filter_func(minetest.registered_items[itemname], itemname)
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end
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function self:check_item_by_def(def)
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if def then
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return self.filter_func(def, def.name)
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end
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end
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filter.registered_filter[self.name] = self
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end
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filter.register_filter({
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name = "transluc",
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shortdesc = "Translucent blocks",
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filter_func = function(def, name)
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return def.sunlight_propagates
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end
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})
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filter.register_filter({
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name = "vessel",
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shortdesc = "Vessel",
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filter_func = function(def, name)
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if def.allow_metadata_inventory_move or
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def.allow_metadata_inventory_take or
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def.on_metadata_inventory_put then
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return true
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end
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end
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})
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filter.register_filter({
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name = "drawtype",
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filter_func = function(def, name)
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return def.drawtype
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end
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})
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filter.register_filter({
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name = "material",
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filter_func = function(def, name)
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return def.base_material
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end
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})
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filter.register_filter({
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name = "shape",
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filter_func = function(def, name)
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return def.shape_type
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end
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})
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filter.register_filter({
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name = "eatable",
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filter_func = function(def, name)
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if def.on_use then
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local name,change=debug.getupvalue(def.on_use, 1)
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if name~=nil and name=="hp_change" and change > 0 then
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return tostring(change)
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end
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end
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end
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})
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filter.register_filter({
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name = "toxic",
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filter_func = function(def, name)
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if def.on_use then
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local name,change=debug.getupvalue(def.on_use, 1)
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if name~=nil and name=="hp_change" and change < 0 then
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return tostring(change)
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end
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end
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end
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})
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----------------
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return filter
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