Allow other mods to override the suggested filters

changelog.txt

@@ -2,6 +2,7 @@
 Version: 0.2.22
 Date: ????
   Changes:
+    - Added support for overriding the suggested filters for an entity through a remote interface.
 ---------------------------------------------------------------------------------------------------
 Version: 0.2.21
 Date: 2025-10-03
@@ -231,4 +232,4 @@ Date: 2023-06-14
     - Intial release
     - Reads chest contents
     - Reads recipe input/output
-    - Reads fuel input/output
+    - Reads fuel input/output

control.lua

@@ -1,6 +1,15 @@
 local get_filter_updater = require("filter_updaters")
 local fh_util = require("fh_util")
 
+-- validate the mod data to ensure each entity name exists and points to a valid remote interface.
+for _, hook in ipairs({"fh_add_items_drop_target_entity", "fh_add_items_pickup_target_entity"}) do
+    for entity_name, data in pairs(prototypes.mod_data[hook].data) do
+        assert(prototypes.entity[entity_name], string.format('prototypes.entity["%s"] == nil', entity_name))
+        -- assert(remote.interfaces[data[1]], string.format('remote.interfaces["%s"] == nil', data[1]))
+        -- assert(remote.interfaces[data[1]][data[2]], string.format('remote.interfaces["%s"]["%s"] == nil', data[1], data[2]))
+    end
+end
+
 local function contains(table, val)
     for i = 1, #table do
         if table[i] == val then
@@ -272,6 +281,14 @@ end
 ---@param items table<string, ItemWithQuality>
 ---Adds to the filter item list based on an entity being taken from
 function FilterHelper.add_items_pickup_target_entity(target, items)
+    local mod_data = prototypes.mod_data["fh_add_items_pickup_target_entity"].get(target.name)
+    if mod_data then
+        for _, item in ipairs(remote.call(mod_data[1], mod_data[2], target, {})) do
+            fh_util.add_item_to_table(items, item)
+        end
+        return
+    end
+
     local inventory = target.get_output_inventory()
     if target.type == "proxy-container" and target.proxy_target_entity then
         inventory = target.proxy_target_entity.get_inventory(target.proxy_target_inventory)
@@ -347,6 +364,14 @@ end
 ---@param items table<string, ItemWithQuality>
 ---Adds to the filter item list based on an entity being given to
 function FilterHelper.add_items_drop_target_entity(target, items)
+    local mod_data = prototypes.mod_data["fh_add_items_drop_target_entity"].get(target.name)
+    if mod_data then
+        for _, item in ipairs(remote.call(mod_data[1], mod_data[2], target, {})) do
+            fh_util.add_item_to_table(items, item)
+        end
+        return
+    end
+
     if contains({ "assembling-machine", "rocket-silo" }, fh_util.get_effective_type(target)) then
         local recipe, quality = target.get_recipe()
         if recipe then

data.lua

@@ -15,4 +15,23 @@ styles["fh_deep_frame"] = {
     -- left_margin = 8,
     -- right_margin = 8,
     -- bottom_margin = 4
-}
+}
+
+-- in order to override the logic for an entity just add their name pointing to a remote interface in your own mod:
+-- data.raw["mod-data"]["fh_add_items_drop_target_entity"].data["assembling-machine-3"] = {"interface", "function"}
+data:extend{
+    {
+        type = "mod-data",
+        name = "fh_add_items_drop_target_entity",
+        data = {},
+    },
+    {
+        type = "mod-data",
+        name = "fh_add_items_pickup_target_entity",
+        data = {},
+    },
+}
+-- in your remote interface you will receive the entity and an empty array of items for your convenience,
+-- the array of items should always be returned, items are allowed to be in several formats.
+-- (see fh_util for details, most notably: item_name, {name = "name"} & prototypes)
+-- note: your mod becomes responsible for ALL suggestions for that entity, like burn results and spoilage.