add buildingplan reset for resetting all filters

docs/changelog.txt

@@ -45,6 +45,7 @@ changelog.txt uses a syntax similar to RST, with a few special sequences:
 -@ `buildingplan`: you can now attach multiple weapons to spike traps
 -@ `buildingplan`: can now filter by whether a slab is engraved
 -@ `buildingplan`: add "minimize" button to temporarily get the planner overlay out of the way if you would rather use the vanilla UI for placing the current building
+-@ `buildingplan`: add ``buildingplan reset`` command for resetting all filters to defaults
 - `blueprint`: now writes blueprints to the ``dfhack-config/blueprints`` directory
 - `blueprint-library-guide`: library blueprints have moved from ``blueprints`` to ``hack/data/blueprints``
 - player-created blueprints should now go in the ``dfhack-config/blueprints`` folder. please move your existing blueprints from ``blueprints`` to ``dfhack-config/blueprints``. you don't need to move the library blueprints -- those can be safely deleted from the old ``blueprints`` directory.

docs/plugins/buildingplan.rst

@@ -60,6 +60,7 @@ Usage
 
     buildingplan [status]
     buildingplan set <setting> (true|false)
+    buildingplan reset
 
 Examples
 --------
@@ -72,6 +73,10 @@ Examples
     When finding items to satisfy "building materials" requirements, don't
     select boulders. Use blocks or logs (if enabled) instead.
 
+``buildingplan reset``
+    Reset all settings and filters to their defaults. This command does not affect
+    existing planned buildings.
+
 .. _buildingplan-settings:
 
 Global settings

plugins/buildingplan/buildingplan.cpp

@@ -261,13 +261,15 @@ static void validate_config(color_ostream &out, bool verbose = false) {
     set_config_bool(config, CONFIG_BARS, false);
 }
 
-static void clear_state(color_ostream &out) {
+static void reset_filters(color_ostream &out) {
+    cur_heat_safety.clear();
+    cur_item_filters.clear();
     call_buildingplan_lua(&out, "signal_reset");
-    call_buildingplan_lua(&out, "reload_pens");
+}
+
+static void clear_state(color_ostream &out) {
     planned_buildings.clear();
     tasks.clear();
-    cur_heat_safety.clear();
-    cur_item_filters.clear();
     for (auto &entry : job_item_cache ) {
         for (auto &jitem : entry.second) {
             delete jitem;
@@ -275,6 +277,8 @@ static void clear_state(color_ostream &out) {
     }
     job_item_cache.clear();
     mat_cache.clear();
+    reset_filters(out);
+    call_buildingplan_lua(&out, "reload_pens");
 }
 
 DFhackCExport command_result plugin_load_data (color_ostream &out) {
@@ -582,6 +586,11 @@ static bool setSetting(color_ostream &out, string name, bool value) {
     return true;
 }
 
+static void resetFilters(color_ostream &out) {
+    DEBUG(status,out).print("entering resetFilters\n");
+    reset_filters(out);
+}
+
 static bool isPlannableBuilding(color_ostream &out, df::building_type type, int16_t subtype, int32_t custom) {
     DEBUG(status,out).print("entering isPlannableBuilding\n");
     return get_num_filters(out, BuildingTypeKey(type, subtype, custom)) >= 1;
@@ -1104,6 +1113,7 @@ static void makeTopPriority(color_ostream &out, df::building *bld) {
 DFHACK_PLUGIN_LUA_FUNCTIONS {
     DFHACK_LUA_FUNCTION(printStatus),
     DFHACK_LUA_FUNCTION(setSetting),
+    DFHACK_LUA_FUNCTION(resetFilters),
     DFHACK_LUA_FUNCTION(isPlannableBuilding),
     DFHACK_LUA_FUNCTION(isPlannedBuilding),
     DFHACK_LUA_FUNCTION(addPlannedBuilding),

plugins/lua/buildingplan.lua

@@ -42,6 +42,8 @@ function parse_commandline(...)
         printStatus()
     elseif command == 'set' and positionals then
         setSetting(positionals[1], positionals[2] == 'true')
+    elseif command == 'reset' then
+        resetFilters()
     else
         return false
     end