Created script system

1 files changed, 65 insertions, 0 deletions

@@ -0,0 +1,65 @@
+#include "script_system.h"
+#include <iostream>
+#include "game.h"
+#include "message_system.h"
+
+ScriptSystem::ScriptSystem(Game& game) : game_(game) {
+  engine_.open_libraries(
+    sol::lib::base,
+    sol::lib::coroutine,
+    sol::lib::math);
+
+  engine_.new_usertype<MessageSystem>(
+    "message",
+    "displayMessage", &MessageSystem::displayMessage,
+    "hideCutsceneBars", &MessageSystem::hideCutsceneBars,
+    "isMessageActive", sol::property(&MessageSystem::isMessageActive));
+
+  engine_.set_function(
+    "message",
+    [&] () -> MessageSystem& {
+      return game_.getSystem<MessageSystem>();
+    });
+
+  engine_.script_file("../res/scripts/common.lua");
+}
+
+void ScriptSystem::tick(double dt) {
+  if (callable_ && *callable_) {
+    auto result = (*callable_)(dt);
+    if (!result.valid()) {
+      sol::error e = result;
+      throw std::runtime_error(e.what());
+    }
+
+    if (!*callable_) {
+      callable_.reset();
+      runner_.reset();
+    }
+  }
+}
+
+void ScriptSystem::runScript(std::string name) {
+  if (!loadedScripts_.count(name)) {
+    engine_.script_file("../res/scripts/" + name + ".lua");
+    loadedScripts_.insert(name);
+  }
+
+  runner_.reset(new sol::thread(sol::thread::create(engine_.lua_state())));
+  callable_.reset(new sol::coroutine(runner_->state().get<sol::function>(name)));
+
+  if (!*callable_) {
+    throw std::runtime_error("Error running script: " + name);
+  }
+
+  auto result = (*callable_)();
+  if (!result.valid()) {
+    sol::error e = result;
+    throw std::runtime_error(e.what());
+  }
+
+  if (!*callable_) {
+    callable_.reset();
+    runner_.reset();
+  }
+}