3 #include "script_interpreter.hpp"
11 #include <sqstdblob.h>
12 #include <sqstdsystem.h>
13 #include <sqstdmath.h>
14 #include <sqstdstring.h>
16 #include "wrapper.hpp"
17 #include "wrapper_util.hpp"
19 #include "file_system.hpp"
20 #include "game_session.hpp"
21 #include "resources.hpp"
22 #include "physfs/physfs_stream.hpp"
23 #include "object/text_object.hpp"
24 #include "object/scripted_object.hpp"
25 #include "object/display_effect.hpp"
26 #include "scripting/sound.hpp"
27 #include "scripting/scripted_object.hpp"
28 #include "scripting/display_effect.hpp"
30 static void printfunc(HSQUIRRELVM, const char* str, ...)
33 va_start(arglist, str);
34 vprintf(str, arglist);
38 ScriptInterpreter* ScriptInterpreter::_current = 0;
40 ScriptInterpreter::ScriptInterpreter(const std::string& new_working_directory)
41 : working_directory(new_working_directory), sound(0), level(0)
45 throw std::runtime_error("Couldn't initialize squirrel vm");
47 // register default error handlers
48 sqstd_seterrorhandlers(v);
49 // register squirrel libs
51 if(sqstd_register_bloblib(v) < 0)
52 throw SquirrelError(v, "Couldn't register blob lib");
53 if(sqstd_register_iolib(v) < 0)
54 throw SquirrelError(v, "Couldn't register io lib");
55 if(sqstd_register_systemlib(v) < 0)
56 throw SquirrelError(v, "Couldn't register system lib");
57 if(sqstd_register_mathlib(v) < 0)
58 throw SquirrelError(v, "Couldn't register math lib");
59 if(sqstd_register_stringlib(v) < 0)
60 throw SquirrelError(v, "Couldn't register string lib");
62 // register print function
63 sq_setprintfunc(v, printfunc);
65 // register supertux API
66 SquirrelWrapper::register_supertux_wrapper(v);
68 // expose some "global" objects
69 sound = new Scripting::Sound();
70 expose_object(sound, "Sound", "Sound");
72 level = new Scripting::Level();
73 expose_object(level, "Level", "Level");
77 ScriptInterpreter::register_sector(Sector* sector)
79 // expose ScriptedObjects to the script
80 for(Sector::GameObjects::iterator i = sector->gameobjects.begin();
81 i != sector->gameobjects.end(); ++i) {
82 GameObject* object = *i;
83 Scripting::ScriptedObject* scripted_object
84 = dynamic_cast<Scripting::ScriptedObject*> (object);
88 expose_object(scripted_object, scripted_object->get_name(),
92 TextObject* text_object = new TextObject();
93 sector->add_object(text_object);
94 Scripting::Text* text = static_cast<Scripting::Text*> (text_object);
95 expose_object(text, "Text", "Text");
97 DisplayEffect* display_effect = new DisplayEffect();
98 sector->add_object(display_effect);
99 Scripting::DisplayEffect* display_effect_api
100 = static_cast<Scripting::DisplayEffect*> (display_effect);
101 expose_object(display_effect_api, "DisplayEffect", "DisplayEffect");
104 ScriptInterpreter::~ScriptInterpreter()
111 static SQInteger squirrel_read_char(SQUserPointer file)
113 std::istream* in = reinterpret_cast<std::istream*> (file);
121 ScriptInterpreter::run_script(std::istream& in, const std::string& sourcename,
122 bool remove_when_terminated)
124 printf("Stackbefore:\n");
125 print_squirrel_stack(v);
126 if(sq_compile(v, squirrel_read_char, &in, sourcename.c_str(), true) < 0)
127 throw SquirrelError(v, "Couldn't parse script");
131 if(sq_call(v, 1, false) < 0)
132 throw SquirrelError(v, "Couldn't start script");
134 if(sq_getvmstate(v) != SQ_VMSTATE_SUSPENDED) {
135 if(remove_when_terminated) {
139 // remove closure from stack
143 print_squirrel_stack(v);
147 ScriptInterpreter::expose_object(void* object, const std::string& name,
148 const std::string& type)
150 // part1 of registration of the instance in the root table
152 sq_pushstring(v, name.c_str(), -1);
154 // resolve class name
156 sq_pushstring(v, type.c_str(), -1);
157 if(sq_get(v, -2) < 0) {
158 std::ostringstream msg;
159 msg << "Couldn't resolve squirrel type '" << type << "'.";
160 throw std::runtime_error(msg.str());
162 sq_remove(v, -2); // remove roottable
164 // create an instance and set pointer to c++ object
165 if(sq_createinstance(v, -1) < 0 || sq_setinstanceup(v, -1, object)) {
166 std::ostringstream msg;
167 msg << "Couldn't setup squirrel instance for object '"
168 << name << "' of type '" << type << "'.";
169 throw SquirrelError(v, msg.str());
172 sq_remove(v, -2); // remove class from stack
174 // part2 of registration of the instance in the root table
175 if(sq_createslot(v, -3) < 0)
176 throw SquirrelError(v, "Couldn't register object in squirrel root table"); sq_pop(v, 1);
180 ScriptInterpreter::set_wakeup_time(float seconds)
182 wakeup_timer.start(seconds);
186 ScriptInterpreter::update(float )
188 if(!wakeup_timer.check())
192 if(sq_wakeupvm(v, false, false) < 0)
193 throw SquirrelError(v, "Couldn't resume script");
195 if(sq_getvmstate(v) != SQ_VMSTATE_SUSPENDED) {
196 printf("script ended...\n");
202 ScriptInterpreter::draw(DrawingContext& )
207 ScriptInterpreter::add_script_object(Sector* sector, const std::string& name,
208 const std::string& script)
211 std::string workdir = GameSession::current()->get_working_directory();
212 std::auto_ptr<ScriptInterpreter> interpreter(
213 new ScriptInterpreter(workdir));
214 interpreter->register_sector(sector);
216 // load default.nut file if it exists
218 std::string filename = workdir + "/default.nut";
219 IFileStream in(filename);
220 interpreter->run_script(in, filename, false);
221 } catch(std::exception& e) {
225 std::istringstream in(script);
226 interpreter->run_script(in, name);
227 sector->add_object(interpreter.release());
228 } catch(std::exception& e) {
229 std::cerr << "Couldn't start '" << name << "' script: " << e.what() << "\n";