update auto plugin example, use new best practices

plugins/autochop.cpp

@@ -143,6 +143,8 @@ DFhackCExport command_result plugin_enable(color_ostream &out, bool enable) {
         DEBUG(status,out).print("%s from the API; persisting\n",
                                 is_enabled ? "enabled" : "disabled");
         set_config_bool(config, CONFIG_IS_ENABLED, is_enabled);
+        if (enable)
+            do_cycle(out, true);
     } else {
         DEBUG(status,out).print("%s from the API, but already %s; no action\n",
                                 is_enabled ? "enabled" : "disabled",

plugins/autoslab.cpp

@@ -90,6 +90,8 @@ DFhackCExport command_result plugin_enable(color_ostream &out, bool enable)
         is_enabled = enable;
         DEBUG(status, out).print("%s from the API; persisting\n", is_enabled ? "enabled" : "disabled");
         set_config_bool(CONFIG_IS_ENABLED, is_enabled);
+        if (enable)
+            do_cycle(out);
     }
     else
     {

plugins/examples/persistent_per_save_example.cpp

@@ -6,6 +6,7 @@
 // savegame that had this plugin enabled is loaded.
 
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 #include "df/world.h"
@@ -18,6 +19,7 @@
 #include "modules/World.h"
 
 using std::string;
+using std::unordered_map;
 using std::vector;
 
 using namespace DFHack;
@@ -38,25 +40,50 @@ namespace DFHack {
 }
 
 static const string CONFIG_KEY = string(plugin_name) + "/config";
+static const string ELEM_CONFIG_KEY_PREFIX = string(plugin_name) + "/elem/";
 static PersistentDataItem config;
+static unordered_map<int, PersistentDataItem> elems;
+
 enum ConfigValues {
     CONFIG_IS_ENABLED = 0,
     CONFIG_SOMETHING_ELSE = 1,
 };
-static int get_config_val(int index) {
+
-    if (!config.isValid())
+enum ElemConfigValues {
+    ELEM_CONFIG_ID = 0,
+    ELEM_CONFIG_SOMETHING_ELSE = 1,
+};
+
+static int get_config_val(PersistentDataItem &c, int index) {
+    if (!c.isValid())
         return -1;
-    return config.ival(index);
+    return c.ival(index);
 }
-static bool get_config_bool(int index) {
+static bool get_config_bool(PersistentDataItem &c, int index) {
-    return get_config_val(index) == 1;
+    return get_config_val(c, index) == 1;
 }
-static void set_config_val(int index, int value) {
+static void set_config_val(PersistentDataItem &c, int index, int value) {
-    if (config.isValid())
+    if (c.isValid())
-        config.ival(index) = value;
+        c.ival(index) = value;
 }
-static void set_config_bool(int index, bool value) {
+static void set_config_bool(PersistentDataItem &c, int index, bool value) {
-    set_config_val(index, value ? 1 : 0);
+    set_config_val(c, index, value ? 1 : 0);
+}
+
+static PersistentDataItem & ensure_elem_config(color_ostream &out, int id) {
+    if (elems.count(id))
+        return elems[id];
+    string keyname = ELEM_CONFIG_KEY_PREFIX + int_to_string(id);
+    DEBUG(config,out).print("creating new persistent key for elem id %d\n", id);
+    elems.emplace(id, World::GetPersistentData(keyname, NULL));
+    return elems[id];
+}
+static void remove_elem_config(color_ostream &out, int id) {
+    if (!elems.count(id))
+        return;
+    DEBUG(config,out).print("removing persistent key for elem id %d\n", id);
+    World::DeletePersistentData(elems[id]);
+    elems.erase(id);
 }
 
 static const int32_t CYCLE_TICKS = 1200; // one day
@@ -87,7 +114,9 @@ DFhackCExport command_result plugin_enable(color_ostream &out, bool enable) {
         is_enabled = enable;
         DEBUG(config,out).print("%s from the API; persisting\n",
                                 is_enabled ? "enabled" : "disabled");
-        set_config_bool(CONFIG_IS_ENABLED, is_enabled);
+        set_config_bool(config, CONFIG_IS_ENABLED, is_enabled);
+        if (enable)
+            do_cycle(out);
     } else {
         DEBUG(config,out).print("%s from the API, but already %s; no action\n",
                                 is_enabled ? "enabled" : "disabled",
@@ -109,16 +138,27 @@ DFhackCExport command_result plugin_load_data (color_ostream &out) {
     if (!config.isValid()) {
         DEBUG(config,out).print("no config found in this save; initializing\n");
         config = World::AddPersistentData(CONFIG_KEY);
-        set_config_bool(CONFIG_IS_ENABLED, is_enabled);
+        set_config_bool(config, CONFIG_IS_ENABLED, is_enabled);
-        set_config_val(CONFIG_SOMETHING_ELSE, 6000);
+        set_config_val(config, CONFIG_SOMETHING_ELSE, 6000);
     }
 
     // we have to copy our enabled flag into the global plugin variable, but
     // all the other state we can directly read/modify from the persistent
     // data structure.
-    is_enabled = get_config_bool(CONFIG_IS_ENABLED);
+    is_enabled = get_config_bool(config, CONFIG_IS_ENABLED);
     DEBUG(config,out).print("loading persisted enabled state: %s\n",
                             is_enabled ? "true" : "false");
+
+    // load other config elements, if applicable
+    elems.clear();
+    vector<PersistentDataItem> elem_configs;
+    World::GetPersistentData(&elem_configs, ELEM_CONFIG_KEY_PREFIX, true);
+    const size_t num_elem_configs = elem_configs.size();
+    for (size_t idx = 0; idx < num_elem_configs; ++idx) {
+        auto &c = elem_configs[idx];
+        elems.emplace(get_config_val(c, ELEM_CONFIG_ID), c);
+    }
+
     return CR_OK;
 }
 
@@ -150,8 +190,8 @@ static command_result do_command(color_ostream &out, vector<string> &parameters)
 
     // TODO: configuration logic
     // simple commandline parsing can be done in C++, but there are lua libraries
-    // that can easily handle more complex commandlines. see the blueprint plugin
+    // that can easily handle more complex commandlines. see the seedwatch plugin
-    // for an example.
+    // for a simple example.
 
     return CR_OK;
 }

plugins/nestboxes.cpp

@@ -70,6 +70,8 @@ DFhackCExport command_result plugin_enable(color_ostream &out, bool enable) {
         DEBUG(config,out).print("%s from the API; persisting\n",
                                 is_enabled ? "enabled" : "disabled");
         set_config_bool(config, CONFIG_IS_ENABLED, is_enabled);
+        if (enable)
+            do_cycle(out);
     } else {
         DEBUG(config,out).print("%s from the API, but already %s; no action\n",
                                 is_enabled ? "enabled" : "disabled",

plugins/seedwatch.cpp

@@ -99,7 +99,7 @@ static const int32_t CYCLE_TICKS = 1200;
 static int32_t cycle_timestamp = 0;  // world->frame_counter at last cycle
 
 static command_result do_command(color_ostream &out, vector<string> &parameters);
-static void do_cycle(color_ostream &out, int32_t *num_enabled_seeds, int32_t *num_disabled_seeds);
+static void do_cycle(color_ostream &out, int32_t *num_enabled_seeds = NULL, int32_t *num_disabled_seeds = NULL);
 static void seedwatch_setTarget(color_ostream &out, string name, int32_t num);
 
 DFhackCExport command_result plugin_init(color_ostream &out, std::vector <PluginCommand> &commands) {
@@ -149,7 +149,7 @@ DFhackCExport command_result plugin_enable(color_ostream &out, bool enable) {
                                 is_enabled ? "enabled" : "disabled");
         set_config_bool(config, CONFIG_IS_ENABLED, is_enabled);
         if (enable)
-            seedwatch_setTarget(out, "all", DEFAULT_TARGET);
+            do_cycle(out);
     } else {
         DEBUG(config,out).print("%s from the API, but already %s; no action\n",
                                 is_enabled ? "enabled" : "disabled",
@@ -174,26 +174,27 @@ DFhackCExport command_result plugin_load_data (color_ostream &out) {
             world_plant_ids[plant->id] = i;
     }
 
+    watched_seeds.clear();
+    vector<PersistentDataItem> seed_configs;
+    World::GetPersistentData(&seed_configs, SEED_CONFIG_KEY_PREFIX, true);
+    const size_t num_seed_configs = seed_configs.size();
+    for (size_t idx = 0; idx < num_seed_configs; ++idx) {
+        auto &c = seed_configs[idx];
+        watched_seeds.emplace(get_config_val(c, SEED_CONFIG_ID), c);
+    }
+
     config = World::GetPersistentData(CONFIG_KEY);
 
     if (!config.isValid()) {
         DEBUG(config,out).print("no config found in this save; initializing\n");
         config = World::AddPersistentData(CONFIG_KEY);
         set_config_bool(config, CONFIG_IS_ENABLED, is_enabled);
+        seedwatch_setTarget(out, "all", DEFAULT_TARGET);
     }
 
     is_enabled = get_config_bool(config, CONFIG_IS_ENABLED);
     DEBUG(config,out).print("loading persisted enabled state: %s\n",
                             is_enabled ? "true" : "false");
-    watched_seeds.clear();
-    vector<PersistentDataItem> seed_configs;
-    World::GetPersistentData(&seed_configs, SEED_CONFIG_KEY_PREFIX, true);
-    const size_t num_seed_configs = seed_configs.size();
-    for (size_t idx = 0; idx < num_seed_configs; ++idx) {
-        auto &c = seed_configs[idx];
-        watched_seeds.emplace(get_config_val(c, SEED_CONFIG_ID), c);
-    }
-
     return CR_OK;
 }