+void
+Console::ready_vm()
+{
+ if(vm == NULL) {
+ vm = Scripting::global_vm;
+ HSQUIRRELVM new_vm = sq_newthread(vm, 16);
+ if(new_vm == NULL)
+ throw Scripting::SquirrelError(vm, "Couldn't create new VM thread for console");
+
+ // store reference to thread
+ sq_resetobject(&vm_object);
+ if(SQ_FAILED(sq_getstackobj(vm, -1, &vm_object)))
+ throw Scripting::SquirrelError(vm, "Couldn't get vm object for console");
+ sq_addref(vm, &vm_object);
+ sq_pop(vm, 1);
+
+ // create new roottable for thread
+ sq_newtable(new_vm);
+ sq_pushroottable(new_vm);
+ if(SQ_FAILED(sq_setdelegate(new_vm, -2)))
+ throw Scripting::SquirrelError(new_vm, "Couldn't set console_table delegate");
+
+ sq_setroottable(new_vm);
+
+ vm = new_vm;
+
+ try {
+ std::string filename = "scripts/console.nut";
+ IFileStream stream(filename);
+ Scripting::compile_and_run(vm, stream, filename);
+ } catch(std::exception& e) {
+ log_warning << "Couldn't load console.nut: " << e.what() << std::endl;
+ }
+ }
+}
+
+void
+Console::execute_script(const std::string& command)
+{
+ using namespace Scripting;
+
+ ready_vm();
+
+ SQInteger oldtop = sq_gettop(vm);
+ try {
+ if(SQ_FAILED(sq_compilebuffer(vm, command.c_str(), command.length(),
+ "", SQTrue)))
+ throw SquirrelError(vm, "Couldn't compile command");
+
+ sq_pushroottable(vm);
+ if(SQ_FAILED(sq_call(vm, 1, SQTrue, SQTrue)))
+ throw SquirrelError(vm, "Problem while executing command");
+
+ if(sq_gettype(vm, -1) != OT_NULL)
+ addLines(squirrel2string(vm, -1));
+ } catch(std::exception& e) {
+ addLines(e.what());
+ }
+ SQInteger newtop = sq_gettop(vm);
+ if(newtop < oldtop) {
+ log_fatal << "Script destroyed squirrel stack..." << std::endl;
+ } else {
+ sq_settop(vm, oldtop);
+ }
+}
+
+void
+Console::backspace()
+{
+ std::string s = inputBuffer.str();
+ if (s.length() > 0) {
+ s.erase(s.length()-1);
+ inputBuffer.str(s);
+ inputBuffer.pubseekoff(0, std::ios_base::end, std::ios_base::out);
+ }
+}
+
+void
+Console::enter()
+{
+ std::string s = inputBuffer.str();
+ addLines("> "+s);
+ parse(s);
+ inputBuffer.str(std::string());
+}
+
+void
+Console::scroll(int numLines)
+{
+ offset += numLines;
+ if (offset > 0) offset = 0;
+}
+
+void
+Console::show_history(int offset)
+{
+ while ((offset > 0) && (history_position != history.end())) {
+ history_position++;
+ offset--;
+ }
+ while ((offset < 0) && (history_position != history.begin())) {
+ history_position--;
+ offset++;
+ }
+ if (history_position == history.end()) {
+ inputBuffer.str(std::string());
+ } else {
+ inputBuffer.str(*history_position);
+ inputBuffer.pubseekoff(0, std::ios_base::end, std::ios_base::out);
+ }
+}
+