new plugin preserve-tombs ensures that units that die keep their tomb assignments in death
Najeeb Al-Shabibi
parent
d44499b970
commit
986e64aed0
@ -0,0 +1,243 @@
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#include "Debug.h"
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#include "PluginManager.h"
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#include "MiscUtils.h"
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#include <string>
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#include <vector>
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#include <unordered_map>
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#include <algorithm>
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#include <utility>
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#include <cstdint>
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#include "modules/Units.h"
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#include "modules/Buildings.h"
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#include "modules/Persistence.h"
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#include "modules/EventManager.h"
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#include "modules/World.h"
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#include "df/world.h"
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#include "df/unit.h"
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#include "df/building.h"
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#include "df/building_civzonest.h"
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using namespace DFHack;
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using namespace df::enums;
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// <BOILERPLATE>
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DFHACK_PLUGIN("preserve-tombs");
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DFHACK_PLUGIN_IS_ENABLED(is_enabled);
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REQUIRE_GLOBAL(world);
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static const std::string CONFIG_KEY = std::string(plugin_name) + "/config";
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static PersistentDataItem config;
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static int32_t cycle_timestamp;
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static int32_t cycle_freq;
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enum ConfigValues {
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CONFIG_IS_ENABLED = 0,
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CONFIG_CYCLES = 1
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};
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static std::unordered_map<int32_t, int32_t> tomb_assignments;
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namespace DFHack {
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DBG_DECLARE(preservetombs, config, DebugCategory::LINFO);
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}
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static int get_config_val(PersistentDataItem &c, int index) {
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if (!c.isValid())
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return -1;
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return c.ival(index);
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}
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static bool get_config_bool(PersistentDataItem &c, int index) {
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return get_config_val(c, index) == 1;
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}
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static void set_config_val(PersistentDataItem &c, int index, int value) {
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if (c.isValid())
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c.ival(index) = value;
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}
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static void set_config_bool(PersistentDataItem &c, int index, bool value) {
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set_config_val(c, index, value ? 1 : 0);
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}
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static bool assign_to_tomb(int32_t unit_id, int32_t building_id);
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static void update_tomb_assignments(color_ostream& out);
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void onUnitDeath(color_ostream& out, void* ptr);
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DFhackCExport command_result plugin_init(color_ostream &out, std::vector <PluginCommand> &commands) {
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return CR_OK;
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}
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// event listener
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EventManager::EventHandler assign_tomb_handler(onUnitDeath, 0);
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DFhackCExport command_result plugin_enable(color_ostream &out, bool enable) {
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if (!Core::getInstance().isWorldLoaded()) {
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out.printerr("Cannot enable %s without a loaded world.\n", plugin_name);
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return CR_FAILURE;
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}
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if (enable != is_enabled) {
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is_enabled = enable;
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DEBUG(config,out).print("%s from the API; persisting\n",
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is_enabled ? "enabled" : "disabled");
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set_config_bool(config, CONFIG_IS_ENABLED, is_enabled);
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EventManager::registerListener(EventManager::EventType::UNIT_DEATH, assign_tomb_handler, plugin_self);
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if (enable)
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update_tomb_assignments(out);
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} else {
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EventManager::unregisterAll(plugin_self);
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DEBUG(config,out).print("%s from the API, but already %s; no action\n",
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is_enabled ? "enabled" : "disabled",
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is_enabled ? "enabled" : "disabled");
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}
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return CR_OK;
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}
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DFhackCExport command_result plugin_shutdown (color_ostream &out) {
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DEBUG(config,out).print("shutting down %s\n", plugin_name);
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return CR_OK;
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}
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DFhackCExport command_result plugin_load_data (color_ostream &out) {
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cycle_timestamp = 0;
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config = World::GetPersistentData(CONFIG_KEY);
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if (!config.isValid()) {
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DEBUG(config,out).print("no config found in this save; initializing\n");
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config = World::AddPersistentData(CONFIG_KEY);
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set_config_bool(config, CONFIG_IS_ENABLED, is_enabled);
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set_config_val(config, CONFIG_CYCLES, 25);
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}
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is_enabled = get_config_bool(config, CONFIG_IS_ENABLED);
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cycle_freq = get_config_val(config, CONFIG_CYCLES);
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DEBUG(config,out).print("loading persisted enabled state: %s\n",
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is_enabled ? "true" : "false");
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return CR_OK;
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}
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DFhackCExport command_result plugin_onstatechange(color_ostream &out, state_change_event event) {
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if (event == DFHack::SC_WORLD_UNLOADED) {
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if (is_enabled) {
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DEBUG(config,out).print("world unloaded; disabling %s\n",
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plugin_name);
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is_enabled = false;
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}
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}
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return CR_OK;
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}
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DFhackCExport command_result plugin_onupdate(color_ostream &out) {
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if (is_enabled && world->frame_counter - cycle_timestamp >= cycle_freq)
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update_tomb_assignments(out);
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return CR_OK;
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}
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// </BOILERPLATE>
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// On unit death - check if we assigned them a tomb
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//
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//
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void onUnitDeath(color_ostream& out, void* ptr) {
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// input is void* that contains the unit id
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int32_t unit_id = reinterpret_cast<std::intptr_t>(ptr);
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// check if unit was assigned a tomb in life
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auto it = tomb_assignments.find(unit_id);
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if (it == tomb_assignments.end()) return;
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// assign that unit to their previously assigned tomb in life
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int32_t building_id = it->second;
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if (!assign_to_tomb(unit_id, building_id)) return;
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// success, print status update and remove assignment from our memo-list
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out.print("Unit %d died - assigning them to tomb %d\n", unit_id, building_id);
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tomb_assignments.erase(it);
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}
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// Update tomb assignments
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//
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//
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static void update_tomb_assignments(color_ostream &out) {
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// check tomb civzones for assigned units
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for (auto* bld : world->buildings.other.ZONE_TOMB) {
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auto* tomb = virtual_cast<df::building_civzonest>(bld);
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if (!tomb || !tomb->flags.bits.exists) continue;
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if (!tomb->assigned_unit) continue;
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if (Units::isDead(tomb->assigned_unit)) continue; // we only care about living units
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auto it = tomb_assignments.find(tomb->assigned_unit_id);
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if (it == tomb_assignments.end()) {
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tomb_assignments.emplace(tomb->assigned_unit_id, tomb->id);
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out.print("%s new tomb assignment, unit %d to tomb %d\n", plugin_name, tomb->assigned_unit_id, tomb->id);
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}
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else {
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if (it->second != tomb->id) {
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out.print("%s tomb assignment to %d changed, (old: %d, new: %d)\n", plugin_name, tomb->assigned_unit_id, it->second, tomb->id);
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}
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it->second = tomb->id;
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}
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}
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// now check our civzones for unassignment / deleted zone /
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std::erase_if(tomb_assignments, [&](const std::pair<int32_t, int32_t>& pair){
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const auto &[unit_id, building_id] = pair;
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const size_t tomb_idx = binsearch_index(world->buildings.other.ZONE_TOMB, building_id);
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if (tomb_idx == -1) {
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out.print("%s tomb missing: %d - removing\n", plugin_name, building_id);
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return true;
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}
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const auto tomb = virtual_cast<df::building_civzonest>(world->buildings.other.ZONE_TOMB[tomb_idx]);
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if (!tomb || !tomb->flags.bits.exists) {
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out.print("%s tomb missing: %d - removing\n", plugin_name, building_id);
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return true;
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}
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if (tomb->assigned_unit_id != unit_id) {
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out.print("%s unassigned unit %d from tomb %d - removing\n", unit_id, building_id);
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return true;
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}
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return false;
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});
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}
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// ASSIGN UNIT TO TOMB
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//
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//
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static bool assign_to_tomb(int32_t unit_id, int32_t building_id) {
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size_t unit_idx = Units::findIndexById(unit_id);
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if (unit_idx == -1) return false;
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df::unit* unit = world->units.all[unit_idx];
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if (!Units::isDead(unit)) return false;
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size_t tomb_idx = binsearch_index(world->buildings.other.ZONE_TOMB, building_id);
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if (tomb_idx == -1) return false;
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df::building_civzonest* tomb = virtual_cast<df::building_civzonest>(world->buildings.other.ZONE_TOMB[tomb_idx]);
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if (!tomb || tomb->assigned_unit) return false; // in the game we cannot reassign tombs - more research is required to see if reassignment is safe.
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Buildings::setOwner(tomb, unit);
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return true;
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}
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