Files
ReSkate/Extension/Plugins/plugin_runtime.cpp
T
AyeZeeBB 8444553402 Throwdowns: the throwdown kit, so a mode is a plugin and the SDK knows no particular mode
Plugins register modes (card, replaces, order, flag, players) and publish documents through
reskate.throwdowns.ui: the setup page, the waiting card, HUD slots themed on the game's HUD_<theme>_*
widgets, the match panel, flags and match restrictions. SmokeyDawg58's native plumbing
(throwdown_menu.cpp and its .inl files) renders them and posts throwdown_ui events back. kit::flag
is the one native flag registration. General services added for it: reskate.files, reskate.ui.dialog,
reskate.skater push/hold/bone_cam, reskate.camera.pad_flight, reskate.physics competition,
reskate.session.world, reskate.tricks feed/gesture, and world entities.

His ten modes are now Lua in his plugin: the rules, referee and wire (td/rules, referee, wire), and
every page and HUD document (td/ui*.lua). Extension/Modes and reskate.modes are gone, along with
every race and 1-UP branch in the SDK. The plugin test drives each mode through kit events.

A native setup page is never written to while it closes into flag placement: its rows are not
republished, the stock page is put back once the exit is over, and the stock Players slider is left
alone while a plugin flag is out. This fixes the crashes on the Deathrace button and on 1-UP's
Confirm.
2026-10-20 01:04:54 -05:00

456 lines
20 KiB
C++

#include "plugin_runtime.h"
#include "plugin_discovery.h"
#include "plugin_host.h"
#include "plugin_camera.h"
#include "plugin_http.h"
#include "plugin_game_runtime.h"
#include "plugin_wire.h"
#include "Engine/Core/Log/logging.h"
#include "Engine/Game/Multiplayer/session_tools.h"
#include "Extension/Multiplayer/Session/session.h"
#include "Extension/UI/NativeMenu/ui_sound.h"
#include "Extension/UI/Overlay/overlay.h"
#include "Extension/Console/commands.h"
#include "Extension/Profile/local_profile_runtime.h"
#include "Extension/Skater/score_hud.h"
#include "Extension/Skater/trick_watch.h"
#include "Extension/Trainer/trainer.h"
#include "Extension/Throwdowns/throwdown_kit.h"
#include <Windows.h>
#include <ShlObj.h>
#include <array>
#include <atomic>
#include <chrono>
#include <cmath>
#include <format>
#include <mutex>
#include <numbers>
#include <thread>
namespace dingosdk::plugins {
namespace {
std::uintptr_t base{};
// What the discovery thread last found of the Mods folder (reskate.mods).
std::mutex mods_mutex;
std::vector<ModInfo> found_mods; // under mods_mutex
// Plugin messages in and out of the session's throwdown packets: a few at a time. The server
// copies' (on a lobby's host) have their own.
std::mutex messages_mutex;
struct Mailbox {
std::vector<Environment::Received> inbox;
std::vector<std::vector<std::uint8_t>> outbox;
};
Mailbox client_mail, server_mail; // under messages_mutex
// The game for the plugins: a player's copies (client), or the server copies a lobby's host runs,
// which draw nothing and keep their storage apart.
class GameEnvironment final : public Environment {
public:
GameEnvironment(std::filesystem::path storage, bool server) : storage_(std::move(storage)), server_(server) {}
void log(LogLevel level, std::string_view text) override {
logging::write(level == LogLevel::error ? logging::Level::error : level == LogLevel::warn ? logging::Level::warning : logging::Level::info,
logging::Channel::plugins, text);
}
// As the console's own lines are written (console_line): an "error: " line is shown as one.
void console(std::string_view text) override {
const bool error = text.starts_with("error: ");
logging::write(error ? logging::Level::error : logging::Level::info, logging::Channel::command, error ? text.substr(7) : text);
}
double now_ms() override {
return std::chrono::duration<double, std::milli>(std::chrono::steady_clock::now().time_since_epoch()).count();
}
std::filesystem::path storage_root() override { return storage_; }
bool builtin_command(std::string_view word) override {
const auto& commands = console::game_commands();
return commands.find(word) || !commands.under(word).empty();
}
// The trainer's telemetry of the local skater, published each tick. Its heading is 0 to 360
// degrees the same way round; plugins get -pi to pi.
std::optional<SkaterState> skater() override {
const auto t = trainer::telemetry();
if (!t.skater) return std::nullopt;
const float heading = std::remainder(t.heading * std::numbers::pi_v<float> / 180, 2 * std::numbers::pi_v<float>);
return SkaterState{t.position, heading, t.speed, t.vertical, t.airborne, t.air_time};
}
// As the console's tp: refused in a session whose host has turned teleporting (and noclip) off.
Teleport teleport(const Vec3& position, float heading) override {
// A throwdown mode's own moves (line-ups, recoveries, returns to the start) are the game's:
// allowed wherever its match runs and asks for them (the kit's `match.teleports`).
if (!session_noclip_allowed() && !throwdowns::kit::match().teleports) return Teleport::forbidden;
return teleport_local_skater_heading(position, heading) ? Teleport::sent : Teleport::unavailable;
}
std::optional<Vec3> raycast(const Vec3& from, const Vec3& to) override { return local_surface_hit(from, to); }
std::optional<ScoreState> score() override { return score_now; }
std::optional<ScoreState> score_now; // read each tick while a plugin wants tricks
// ReSkate's notices in the top left, titled with the plugin's folder name.
void toast(std::string_view plugin, LogLevel level, std::string_view text) override {
overlay::notify(level == LogLevel::error ? overlay::NoticeLevel::error
: level == LogLevel::warn ? overlay::NoticeLevel::warning : overlay::NoticeLevel::info,
std::string(plugin), std::string(text));
}
bool ui_sound(std::string_view name) override {
using multiplayer::UiSound;
UiSound sound{};
if (name == "select") sound = UiSound::select;
else if (name == "cancel") sound = UiSound::cancel;
else if (name == "navigate") sound = UiSound::navigate;
else if (name == "toggle") sound = UiSound::toggle;
else if (name == "tab") sound = UiSound::tab;
else if (name == "countdown") sound = UiSound::countdown;
else if (name == "go") sound = UiSound::go;
else return false;
multiplayer::queue_ui_sound(static_cast<std::uint32_t>(sound));
return true;
}
std::vector<ModInfo> mods() override {
std::lock_guard lock(mods_mutex);
return found_mods;
}
// The session's model is large to copy: read four times a second.
SessionState session() override {
const auto now = std::chrono::steady_clock::now();
if (now < next_session_) return session_;
next_session_ = now + std::chrono::milliseconds(250);
const auto m = multiplayer::model();
session_ = {};
if (!m.active || !m.connected || !m.local_id || m.echo) return session_;
session_.active = true;
session_.dedicated = m.dedicated;
session_.players.push_back({m.local_id, m.local_name, true, !m.dedicated && m.host_id == m.local_id});
for (const auto& p : m.roster)
if (p.connected && p.id && p.id != m.local_id)
session_.players.push_back({p.id, p.name, false, !m.dedicated && p.id == m.host_id});
return session_;
}
bool send_message(std::vector<std::uint8_t> bytes) override {
std::lock_guard lock(messages_mutex);
auto& outbox = mail().outbox;
if (outbox.size() >= 64) return false;
outbox.push_back(std::move(bytes));
return true;
}
std::vector<Received> take_messages() override {
std::lock_guard lock(messages_mutex);
return std::exchange(mail().inbox, {});
}
std::optional<Vec3> world_to_screen(const Vec3& p) override {
const auto display = plugin_ui::display();
const auto projector = plugin_camera::projector(display[0], display[1]);
return projector ? projector->project(p) : std::nullopt;
}
std::array<float, 2> display() override { return plugin_ui::display(); }
void publish_layers(std::vector<plugin_ui::Layer> layers) override {
if (!server_) plugin_ui::publish_layers(std::move(layers));
}
bool panels_shown() override { return !server_ && plugin_ui::panels_shown(); }
std::string shown_page() override { return plugin_ui::shown_page(); }
void publish_pages(std::vector<plugin_ui::PageEntry> pages) override {
if (!server_) plugin_ui::publish_pages(std::move(pages));
}
void publish_panels(std::vector<plugin_ui::Panel> panels) override {
if (!server_) plugin_ui::publish_panels(std::move(panels));
}
std::vector<plugin_ui::Action> take_actions() override { return server_ ? std::vector<plugin_ui::Action>{} : plugin_ui::take_actions(); }
bool http_request(HttpRequest request) override { return http::start(std::move(request)); }
Game& game() override { return real_game(base, storage_); }
std::vector<HttpResponse> take_http_responses() override { return http::take(); }
private:
std::chrono::steady_clock::time_point next_session_{};
SessionState session_;
private:
Mailbox& mail() { return server_ ? server_mail : client_mail; }
std::filesystem::path storage_;
bool server_{};
};
std::filesystem::path data_root;
// Left to the process's end on purpose: unloading plugins from a static destructor would run
// their scripts while the game shuts down.
GameEnvironment* environment{};
Host* host{};
// Plugins' server copies, while this game hosts a lobby: the session's authority.
GameEnvironment* server_environment{};
Host* server_host{};
bool serving{};
std::uint64_t local_player{};
std::mutex found_mutex;
std::vector<Candidate> found; // under found_mutex
std::uint64_t found_generation{}; // under found_mutex
std::uint64_t applied_generation{};
std::chrono::steady_clock::time_point last_tick{};
// The local skater's tricks (Extension/Skater/trick_watch.h), and where and when the one going on began.
tricks::TrickWatch trick_watch;
Vec3 started_at{};
std::chrono::steady_clock::time_point started_time{};
std::string watched_level;
std::string last_trick_name; // the score HUD's last sequence header
// The score HUD into the trick watch, and what it saw to the plugins. Client thread.
void read_tricks() {
const auto hud = tricks::read_score_hud(base);
if (!hud) {
environment->score_now.reset();
return;
}
const auto skater = trainer::telemetry();
tricks::TrickSignals signals;
signals.action = hud->action;
signals.line_score = hud->line_score;
signals.multiplier = hud->multiplier;
signals.slam = hud->slam;
// A wipeout is physics states 300-399.
signals.wipeout = skater.skater && skater.physics_state >= 300 && skater.physics_state < 400;
const auto event = trick_watch.update(signals);
environment->score_now = ScoreState{hud->line_score, hud->multiplier, trick_watch.in_trick(), hud->header, hud->descriptor,
tricks::names_manual(*hud)};
if (!hud->header.empty()) last_trick_name = hud->header;
const auto now = std::chrono::steady_clock::now();
TrickNews news;
switch (event.kind) {
case tricks::TrickEvent::Kind::none: return;
case tricks::TrickEvent::Kind::started:
started_at = skater.position;
started_time = now;
news.kind = TrickNews::Kind::started;
news.started_at = started_at;
break;
case tricks::TrickEvent::Kind::landed:
news.kind = TrickNews::Kind::landed;
news.points = event.points;
news.multiplier = event.multiplier;
news.started_at = started_at;
news.landed_at = skater.position;
news.ms = std::chrono::duration<double, std::milli>(now - started_time).count();
news.name = last_trick_name;
break;
case tricks::TrickEvent::Kind::broken:
news.kind = TrickNews::Kind::broken;
news.reason = signals.slam ? "slam" : "wipeout";
break;
}
host->trick(news);
}
void watch() {
FileChecks checks;
for (;;) {
try {
std::vector<ModInfo> mods;
auto plugins = discover(data_root, checks, &mods);
{
std::lock_guard lock(mods_mutex);
found_mods = std::move(mods);
}
std::lock_guard lock(found_mutex);
if (plugins != found || !found_generation) {
found = std::move(plugins);
++found_generation;
}
} catch (const std::exception& error) {
logging::log(logging::Level::warning, logging::Channel::plugins, "Looking for plugins failed: {}", error.what());
}
std::this_thread::sleep_for(std::chrono::seconds(2));
}
}
std::filesystem::path local_storage() {
PWSTR raw{};
std::filesystem::path result;
if (SUCCEEDED(SHGetKnownFolderPath(FOLDERID_LocalAppData, 0, nullptr, &raw)) && raw)
result = std::filesystem::path(raw) / L"ReSkate" / L"Plugins";
CoTaskMemFree(raw);
return result;
}
}
bool start(std::uintptr_t image_base) noexcept {
try {
if (host) return true;
base = image_base;
plugin_camera::image_base().store(image_base);
std::array<wchar_t, 32768> path{};
const auto length = GetModuleFileNameW(nullptr, path.data(), static_cast<DWORD>(path.size()));
if (!length || length >= path.size()) return false;
data_root = std::filesystem::path(std::wstring(path.data(), length)).parent_path();
auto storage = local_storage();
if (storage.empty()) storage = data_root / L"ReSkate.Plugins";
server_environment = new GameEnvironment(storage / L"server", true);
environment = new GameEnvironment(std::move(storage), false);
host = new Host(*environment, Side::client);
server_host = new Host(*server_environment, Side::server, {}, "@server");
std::thread(watch).detach();
logging::write(logging::Level::info, logging::Channel::plugins, "Plugins: looking in Mods for reskate-plugin.json every 2 s.");
return true;
} catch (const std::exception& error) {
logging::log(logging::Level::error, logging::Channel::plugins, "Plugins could not start: {}", error.what());
return false;
}
}
void on_client_tick() noexcept {
if (!host) return;
try {
{
std::vector<Candidate> latest;
bool changed = false;
{
std::lock_guard lock(found_mutex);
if (found_generation != applied_generation) {
latest = found;
applied_generation = found_generation;
changed = true;
}
}
if (changed) host->apply(latest);
// The server copies run while this game hosts a lobby (a dedicated server runs its own).
const auto session = environment->session();
local_player = 0;
bool hosting = false;
for (const auto& player : session.players)
if (player.me) {
local_player = player.id;
hosting = session.active && player.host && !session.dedicated;
}
if (hosting != serving) {
serving = hosting;
if (serving) {
std::lock_guard lock(found_mutex);
server_host->apply(found);
logging::write(logging::Level::info, logging::Channel::plugins, "Plugins: hosting a lobby, so server copies run here.");
} else {
server_host->apply({});
std::lock_guard lock(messages_mutex);
server_mail = {};
}
} else if (serving && changed) server_host->apply(latest);
}
const auto now = std::chrono::steady_clock::now();
const double dt = last_tick == std::chrono::steady_clock::time_point{} ? 0
: std::chrono::duration<double, std::milli>(now - last_tick).count();
last_tick = now;
if (host->wants_tricks()) read_tricks();
else environment->score_now.reset();
host->tick(dt);
if (serving) server_host->tick(dt);
} catch (const std::exception& error) {
logging::log(logging::Level::error, logging::Channel::plugins, "Plugin tick failed: {}", error.what());
}
}
void set_level(std::string_view level) noexcept {
if (!host) return;
try {
// A new level starts a new line: a trick going on before it scores nothing.
if (level != watched_level) {
watched_level = std::string(level);
trick_watch = tricks::TrickWatch{};
}
host->set_level(std::string(level));
}
catch (const std::exception& error) {
logging::log(logging::Level::error, logging::Channel::plugins, "Plugin level change failed: {}", error.what());
}
}
bool run_console(const std::string& text) noexcept {
if (!host) return false;
try { return host->run_console(text) || (serving && server_host->run_console(text)); }
catch (const std::exception& error) {
logging::log(logging::Level::error, logging::Channel::plugins, "Plugin command failed: {}", error.what());
return true;
}
}
// Another player's plugin message. On a lobby's host the server copies hear what is for them and
// what is for everyone; the authority's words come only from the authority (session.cpp checks).
void receive_message(std::uint64_t sender, const std::vector<std::uint8_t>& bytes) noexcept {
try {
std::lock_guard lock(messages_mutex);
const auto to = wire::to_of(bytes);
const auto put = [&](Mailbox& mail) {
if (mail.inbox.size() < 256) mail.inbox.push_back({sender, bytes});
};
if (serving) {
if (wire::from_authority(bytes)) return;
if (to == wire::authority || to == 0) put(server_mail);
if (to != wire::authority) put(client_mail);
} else if (to != wire::authority) put(client_mail);
} catch (...) {}
}
// What goes out to the session. On a lobby's host, what its own copies say to the authority stays
// here, and what the authority says to everyone (or the host) is heard here too.
std::vector<std::vector<std::uint8_t>> take_outgoing() noexcept {
std::lock_guard lock(messages_mutex);
auto out = std::exchange(client_mail.outbox, {});
if (!serving) return out;
std::vector<std::vector<std::uint8_t>> sent;
for (auto& bytes : out) {
const auto to = wire::to_of(bytes);
if ((to == wire::authority || to == 0) && server_mail.inbox.size() < 256) server_mail.inbox.push_back({local_player, bytes});
if (to != wire::authority) sent.push_back(std::move(bytes));
}
for (auto& bytes : std::exchange(server_mail.outbox, {})) {
const auto to = wire::to_of(bytes);
if ((to == 0 || to == local_player) && client_mail.inbox.size() < 256) client_mail.inbox.push_back({local_player, bytes});
if (to != local_player) sent.push_back(std::move(bytes));
}
return sent;
}
std::string describe() {
if (!host) return "error: Plugins did not start.";
auto plugins = host->status();
// While this game hosts a lobby, its server copies too.
if (serving)
for (auto status : server_host->status()) {
status.id += "@server";
plugins.push_back(std::move(status));
}
if (plugins.empty()) return "No plugins. A plugin is a mod in Mods with a reskate-plugin.json.";
std::string text;
for (const auto& plugin : plugins) {
if (!text.empty()) text += '\n';
text += std::format("{}: {}", plugin.id, plugin.state);
if (plugin.state == "running")
text += std::format(", {:.1f} MB, {:.3f} ms a tick, {} command{}", plugin.memory / 1048576.0, plugin.tick_ms,
plugin.commands.size(), plugin.commands.size() == 1 ? "" : "s");
else if (!plugin.reason.empty()) text += " (" + plugin.reason + ")";
}
return text;
}
std::string list_commands() {
if (!host) return "error: Plugins did not start.";
std::string text;
const auto add = [&](const std::vector<Status>& all, std::string_view suffix) {
for (const auto& plugin : all)
for (const auto& [name, help] : plugin.commands) {
if (!text.empty()) text += '\n';
text += std::format("{} - {} ({}{})", name, help, plugin.id, suffix);
}
};
add(host->status(), "");
if (serving) add(server_host->status(), "@server"); // run when no player's copy has the command
return text.empty() ? "No plugin has a console command." : text;
}
// "<id>@server" names a server copy (on this game while it hosts a lobby); a plain id, the player's copy.
namespace {
template <class Do> std::string either(std::string_view id, Do&& act) {
if (!host) return "error: Plugins did not start.";
constexpr std::string_view server_suffix = "@server";
if (id.ends_with(server_suffix)) {
if (!serving) return "error: server copies run only while this game hosts a lobby.";
return act(*server_host, id.substr(0, id.size() - server_suffix.size()));
}
return act(*host, id);
}
}
std::string reload(std::string_view id) { return either(id, [](Host& h, std::string_view i) { return h.reload(i); }); }
std::string switch_off(std::string_view id) { return either(id, [](Host& h, std::string_view i) { return h.switch_off(i); }); }
std::string switch_on(std::string_view id) { return either(id, [](Host& h, std::string_view i) { return h.switch_on(i); }); }
}