-/*
- * Interpreter.cpp
- *
- * Created on: Aug 26, 2012
- * Author: holy
- */
-
#include "Interpreter.h"
#include "ParsedSource.h"
+#include "../battle/Hero.h"
#include "../battle/Monster.h"
+#include "../battle/PartyLayout.h"
+#include "../battle/Resources.h"
+#include "../common/Ikari.h"
+#include "../common/Item.h"
+#include "../common/Script.h"
+#include "../common/Spell.h"
+#include "../common/Stats.h"
+#include "../common/TargetingMode.h"
+#include "../graphics/ComplexAnimation.h"
+#include "../graphics/Font.h"
+#include "../graphics/Frame.h"
+#include "../graphics/Gauge.h"
+#include "../graphics/Menu.h"
+#include "../graphics/SimpleAnimation.h"
+#include "../graphics/Sprite.h"
+
+#include <algorithm>
+#include <cstring>
+#include <SDL_image.h>
+using battle::Hero;
using battle::Monster;
-using std::map;
+using battle::PartyLayout;
+using common::Ikari;
+using common::Item;
+using common::Script;
+using common::Spell;
+using common::Stats;
+using common::TargetingMode;
+using graphics::Animation;
+using graphics::Color;
+using graphics::Font;
+using graphics::Frame;
+using graphics::Gauge;
+using graphics::ComplexAnimation;
+using graphics::SimpleAnimation;
+using graphics::Sprite;
+using geometry::Vector;
+using std::make_pair;
using std::set;
using std::string;
+using std::vector;
namespace loader {
-void Interpreter::ReadSource() {
- for (set<string>::const_iterator i(source.Exports().begin()), end(source.Exports().end()); i != end; ++i) {
- const Definition &dfn(source.GetDefinition(*i));
- if (dfn.HasLiteralValue()) {
- ReadLiteral(dfn);
+Interpreter::~Interpreter() {
+ for (std::map<string, SDL_Surface *>::const_iterator i(imageCache.begin()), end(imageCache.end()); i != end; ++i) {
+ SDL_FreeSurface(i->second);
+ }
+}
+
+
+const Interpreter::ParsedDefinition &Interpreter::GetDefinition(const string &identifier) {
+ std::map<string, ParsedDefinition>::const_iterator i(parsedDefinitions.find(identifier));
+ if (i != parsedDefinitions.end()) {
+ return i->second;
+ } else if (source.IsDefined(identifier)) {
+ ReadDefinition(source.GetDefinition(identifier));
+ return parsedDefinitions.at(identifier);
+ } else {
+ throw Error("access to undefined object " + identifier);
+ }
+}
+
+
+void *Interpreter::GetObject(int typeId, const std::string &name) {
+ std::map<string, ParsedDefinition>::const_iterator i(parsedDefinitions.find(name));
+ if (i != parsedDefinitions.end()) {
+ const TypeDescription &requested(TypeDescription::Get(typeId));
+ const TypeDescription &actual(TypeDescription::Get(i->second.type));
+ if (requested.TypeId() == actual.TypeId()) {
+ return values[actual.TypeId()][i->second.id];
+ } else if (actual.IsSubtypeOf(requested)) {
+ char *sub(reinterpret_cast<char *>(values[actual.TypeId()][i->second.id]));
+ std::ptrdiff_t offset(actual.SupertypeOffset(requested));
+ return sub - offset;
} else {
- ReadObject(dfn);
+ throw Error("cannot cast " + actual.TypeName() + " to " + requested.TypeName());
}
+ } else {
+ throw Error("access to undefined object " + name);
+ }
+}
+
+
+void Interpreter::ReadSource() {
+ for (set<string>::const_iterator i(source.Exports().begin()), end(source.Exports().end()); i != end; ++i) {
+ ReadDefinition(source.GetDefinition(*i));
+ }
+}
+
+void Interpreter::ReadDefinition(const Definition &dfn) {
+ if (parsedDefinitions.find(dfn.Identifier()) != parsedDefinitions.end()) {
+ return;
+ }
+ if (dfn.HasLiteralValue()) {
+ ReadLiteral(dfn);
+ } else {
+ ReadObject(dfn);
}
}
void Interpreter::ReadLiteral(const Definition &dfn) {
- switch (dfn.GetLiteral()->GetType()) {
+ const string &typeName(dfn.GetLiteral()->IsArray() ? "Array" : dfn.GetLiteral()->GetTypeName());
+ int typeId(TypeDescription::GetTypeId(typeName));
+ int id(values[typeId].size());
+ const TypeDescription &td(TypeDescription::Get(typeId));
+ int size(
+ (dfn.GetLiteral()->GetType() == Literal::PATH
+ || dfn.GetLiteral()->GetType() == Literal::STRING)
+ ? dfn.GetLiteral()->GetString().size() : td.Size());
+ char *object(alloc.Alloc(size));
+ values[typeId].push_back(object);
+ parsedDefinitions.insert(make_pair(dfn.Identifier(), ParsedDefinition(&dfn, typeId, id)));
+ if (dfn.GetLiteral()->GetType() == Literal::OBJECT) {
+ ReadObject(typeId, id, object, *dfn.GetLiteral()->GetProperties());
+ } else {
+ ReadLiteral(typeId, id, object, *dfn.GetLiteral());
+ }
+}
+
+void Interpreter::ReadLiteral(int typeId, int id, char *object, const Literal &literal) {
+ switch (literal.GetType()) {
case Literal::ARRAY_VALUES:
- throw Error("unhandled literal: array of values");
+ throw Error("named value arrays are not supported, sorry");
break;
case Literal::ARRAY_PROPS:
- throw Error("unhandled literal: array of values");
+ throw Error("named property list arrays are not supported, sorry");
break;
case Literal::BOOLEAN:
- throw Error("unhandled literal: array of values");
+ new (object) bool(literal.GetBoolean());
break;
case Literal::COLOR:
- throw Error("unhandled literal: array of values");
+ new (object) Color(literal.GetRed(), literal.GetGreen(), literal.GetBlue(), literal.GetAlpha());
break;
case Literal::NUMBER:
- throw Error("unhandled literal: array of values");
+ new (object) int(literal.GetNumber());
+ break;
+ case Literal::PATH:
+ std::memcpy(object, literal.GetString().c_str(), literal.GetString().size());
+ object[literal.GetString().size()] = '\0';
+ break;
+ case Literal::SCRIPT:
+ new (object) Script;
+ ReadScript(literal.GetScript(), reinterpret_cast<Script *>(object));
break;
case Literal::STRING:
- throw Error("unhandled literal: array of values");
+ std::memcpy(object, literal.GetString().c_str(), literal.GetString().size());
+ object[literal.GetString().size()] = '\0';
break;
case Literal::VECTOR:
- throw Error("unhandled literal: array of values");
+ new (object) Vector<int>(literal.GetX(), literal.GetY());
break;
case Literal::OBJECT:
- throw Error("unhandled literal: array of values");
- break;
+ throw Error("illogical branch: read literal object as non-object literal");
}
}
-void Interpreter::ReadObject(const Definition &dfn) {
- if (dfn.TypeName() == "Monster") {
- monsters.resize(monsters.size() + 1);
- ReadMonster(monsters.back(), *dfn.GetProperties());
+
+void *Interpreter::GetObject(int typeId, const Value &v) {
+ if (v.IsLiteral()) {
+ if (v.GetLiteral().IsObject()) {
+ int typeId(TypeDescription::GetTypeId(v.GetLiteral().GetTypeName()));
+ const TypeDescription &td(TypeDescription::Get(typeId));
+ char *object(alloc.Alloc(td.Size()));
+ td.Construct(object);
+ int id(values[typeId].size());
+ values[typeId].push_back(object);
+ ReadObject(typeId, id, object, *v.GetLiteral().GetProperties());
+ return object;
+ } else {
+ int typeId(0), id(0);
+ switch (v.GetLiteral().GetType()) {
+ case Literal::ARRAY_VALUES:
+ throw Error("cannot copy value arrays, sorry");
+ break;
+ case Literal::ARRAY_PROPS:
+ throw Error("cannot copy property list arrays, sorry");
+ break;
+ case Literal::BOOLEAN:
+ {
+ typeId = TypeDescription::GetTypeId("Boolean");
+ id = values[typeId].size();
+ const TypeDescription &td(TypeDescription::Get(typeId));
+ char *object(alloc.Alloc(td.Size()));
+ values[typeId].push_back(new (object) bool(v.GetLiteral().GetBoolean()));
+ }
+ break;
+ case Literal::COLOR:
+ {
+ typeId = TypeDescription::GetTypeId("Color");
+ id = values[typeId].size();
+ const TypeDescription &td(TypeDescription::Get(typeId));
+ char *object(alloc.Alloc(td.Size()));
+ values[typeId].push_back(new (object) Color(v.GetLiteral().GetRed(), v.GetLiteral().GetGreen(), v.GetLiteral().GetBlue(), v.GetLiteral().GetAlpha()));
+ }
+ break;
+ case Literal::NUMBER:
+ {
+ typeId = TypeDescription::GetTypeId("Number");
+ id = values[typeId].size();
+ const TypeDescription &td(TypeDescription::Get(typeId));
+ char *object(alloc.Alloc(td.Size()));
+ values[typeId].push_back(new (object) int(v.GetLiteral().GetNumber()));
+ }
+ break;
+ case Literal::PATH:
+ {
+ typeId = TypeDescription::GetTypeId("Path");
+ id = values[typeId].size();
+ char *str(alloc.Alloc(v.GetLiteral().GetString().size() + 1));
+ std::memcpy(str, v.GetLiteral().GetString().c_str(), v.GetLiteral().GetString().size());
+ str[v.GetLiteral().GetString().size()] = '\0';
+ values[typeId].push_back(str);
+ }
+ break;
+ case Literal::SCRIPT:
+ {
+ typeId = TypeDescription::GetTypeId("Script");
+ char *script(ReadScript(v.GetLiteral().GetScript()));
+ id = values[typeId].size();
+ values[typeId].push_back(script);
+ }
+ break;
+ case Literal::STRING:
+ {
+ typeId = TypeDescription::GetTypeId("String");
+ id = values[typeId].size();
+ char *str(alloc.Alloc(v.GetLiteral().GetString().size() + 1));
+ std::memcpy(str, v.GetLiteral().GetString().c_str(), v.GetLiteral().GetString().size());
+ str[v.GetLiteral().GetString().size()] = '\0';
+ values[typeId].push_back(str);
+ }
+ break;
+ case Literal::VECTOR:
+ {
+ typeId = TypeDescription::GetTypeId("Vector");
+ id = values[typeId].size();
+ const TypeDescription &td(TypeDescription::Get(typeId));
+ char *object(alloc.Alloc(td.Size()));
+ values[typeId].push_back(new (object) Vector<int>(v.GetLiteral().GetX(), v.GetLiteral().GetY()));
+ }
+ break;
+ case Literal::OBJECT:
+ {
+ typeId = TypeDescription::GetTypeId(v.GetLiteral().GetTypeName());
+ const TypeDescription &td(TypeDescription::Get(typeId));
+ id = values[typeId].size();
+ char *object(alloc.Alloc(td.Size()));
+ td.Construct(object);
+ ReadObject(typeId, id, object, *v.GetLiteral().GetProperties());
+ }
+ break;
+ }
+ return values[typeId][id];
+ }
} else {
- throw Error("unhandled object: " + dfn.TypeName());
+ ReadDefinition(source.GetDefinition(v.GetIdentifier()));
+ return GetObject(typeId, v.GetIdentifier());
}
}
-void Interpreter::ReadMonster(Monster &m, const PropertyList &props) {
+void Interpreter::ReadObject(const Definition &dfn) {
+ int typeId(TypeDescription::GetTypeId(dfn.TypeName()));
+ const TypeDescription &td(TypeDescription::Get(typeId));
+ int id(values[typeId].size());
+ char *object(alloc.Alloc(td.Size()));
+ td.Construct(object);
+ values[typeId].push_back(object);
+ parsedDefinitions.insert(make_pair(dfn.Identifier(), ParsedDefinition(&dfn, typeId, id)));
+ ReadObject(typeId, id, object, *dfn.GetProperties());
+}
+
+
+void Interpreter::ReadObject(int typeId, int id, char *object, const PropertyList &props) {
+ const TypeDescription &td(TypeDescription::Get(typeId));
for (PropertyList::ConstIterator i(props.Begin()), end(props.End()); i != end; ++i) {
- if (i->first == "name") {
- if (i->second->IsLiteral()) {
- m.SetName(i->second->GetLiteral().GetString().c_str());
+ const FieldDescription &fd(td.GetField(i->first));
+ const TypeDescription &fieldType(TypeDescription::Get(fd.TypeId()));
+ if (CanLink(*i->second)) {
+ char *dest(object + fd.Offset());
+ if (fd.IsAggregate()) {
+ int arraySize(i->second->GetLiteral().ArraySize());
+ char *aggregate(alloc.Alloc(fieldType.Size() * arraySize));
+ char *iter(aggregate);
+ if (i->second->GetLiteral().GetType() == Literal::ARRAY_PROPS) {
+ const vector<PropertyList *> &list(i->second->GetLiteral().GetPropertyLists());
+ for (vector<PropertyList *>::const_iterator j(list.begin()), end(list.end()); j != end; ++j, iter += fieldType.Size()) {
+ fieldType.Construct(iter);
+ ReadObject(fieldType.TypeId(), -1, iter, **j);
+ }
+ } else {
+ const vector<Value *> &list(i->second->GetLiteral().GetValues());
+ for (vector<Value *>::const_iterator j(list.begin()), end(list.end()); j != end; ++j, iter += fieldType.Size()) {
+ fieldType.Construct(iter);
+ ReadLiteral(fieldType.TypeId(), -1, iter, (*j)->GetLiteral());
+ }
+ }
+ if (fd.IsReferenced()) {
+ std::memcpy(dest, &aggregate, sizeof(char *));
+ dest += sizeof(char *);
+ std::memcpy(dest, &arraySize, sizeof(int));
+ } else {
+ throw Error("aggregate type fields must be referenced");
+ }
+ } else if (i->second->IsLiteral() && !fd.IsReferenced()) {
+ // inline literals
+ if (i->second->GetLiteral().IsObject()) {
+ ReadObject(fd.TypeId(), -1, dest, *i->second->GetLiteral().GetProperties());
+ } else {
+ ReadLiteral(fd.TypeId(), -1, dest, i->second->GetLiteral());
+ }
+ } else {
+ char *src(reinterpret_cast<char *>(GetObject(fd.TypeId(), *i->second)));
+ if (fd.TypeId() == TypeDescription::GetTypeId("Image")) {
+ src = reinterpret_cast<char *>(GetImage(src));
+ }
+ if (fd.IsReferenced()) {
+ std::memcpy(dest, &src, sizeof(char *));
+ } else {
+ std::memcpy(dest, src, fieldType.Size());
+ }
+ }
+ } else {
+ Postpone(typeId, id, fd.Offset(), i->second->GetIdentifier(), fd.TypeId(), !fd.IsReferenced());
+ }
+ }
+ td.Load(object);
+}
+
+
+void Interpreter::ReadScript(const std::vector<ScriptToken *> &s, Script *script) {
+ std::map<string, int> labels;
+ int size(0);
+ for (vector<ScriptToken *>::const_iterator i(s.begin()), end(s.end()); i != end; ++i) {
+ if ((*i)->GetType() == ScriptToken::LABEL) {
+ if (labels.count((*i)->Label())) {
+ throw Error("duplicate label " + (*i)->Label());
+ } else {
+ labels[(*i)->Label()] = size;
+ }
+ } else if ((*i)->GetType() != ScriptToken::COMMAND) {
+ throw Error("unexpected script token");
+ }
+ size += sizeof(Script::Code);
+ const string &cmd((*i)->CommandName());
+ if (cmd == "move") {
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after move");
+ }
+ const string ®((*i)->RegisterName());
+ if (reg.size() != 2) {
+ throw Error("invalid register name " + reg);
+ }
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after move");
+ }
+ if ((*i)->GetType() != ScriptToken::REGISTER) {
+ switch (reg[0]) {
+ case 'a':
+ size += sizeof(void *);
+ break;
+ case 'i':
+ size += sizeof(int);
+ break;
+ case 'v':
+ size += sizeof(Vector<int>);
+ break;
+ default:
+ throw Error("unknown register " + reg);
+ }
+ }
+ } else if (cmd == "add") {
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after add");
+ }
+ const string ®((*i)->RegisterName());
+ if (reg.size() != 2) {
+ throw Error("invalid register name " + reg);
+ }
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after add");
+ }
+ if ((*i)->GetType() != ScriptToken::REGISTER) {
+ switch (reg[0]) {
+ case 'i':
+ size += sizeof(int);
+ break;
+ case 'v':
+ size += sizeof(Vector<int>);
+ break;
+ default:
+ throw Error("expected register after add " + reg);
+ }
+ }
+ } else if (cmd == "mod") {
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after mod");
+ }
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after mod");
+ }
+ if ((*i)->GetType() != ScriptToken::REGISTER) {
+ size += sizeof(int);
+ }
+ } else if (cmd == "rand") {
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after rand");
+ }
+ } else if (cmd == "cmp") {
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ if ((*i)->GetType() != ScriptToken::REGISTER) {
+ size += sizeof(int);
+ }
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ if ((*i)->GetType() != ScriptToken::REGISTER) {
+ size += sizeof(int);
+ }
+ } else if (cmd == "jmp") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jeq") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jne") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jl") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jle") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jg") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jge") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "sysc") {
+
+ } else {
+ throw Error("unknown command " + cmd);
+ }
+ }
+
+ char *text(alloc.Alloc(size));
+ int cursor(0);
+ for (vector<ScriptToken *>::const_iterator i(s.begin()), end(s.end()); i != end; ++i) {
+ if ((*i)->GetType() == ScriptToken::LABEL) {
+ continue;
+ }
+ if ((*i)->GetType() != ScriptToken::COMMAND) {
+ throw Error("unexpected script token");
+ }
+ const string &cmd((*i)->CommandName());
+ if (cmd == "move") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_MOVE, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 2;
+ ++i;
+ const string ®((*i)->RegisterName());
+ switch (reg[0]) {
+ case 'a':
+ code.type = Script::TYPE_ADDRESS;
+ break;
+ case 'i':
+ code.type = Script::TYPE_INTEGER;
+ break;
+ case 'v':
+ code.type = Script::TYPE_VECTOR;
+ break;
+ default:
+ throw Error("invalid register " + reg);
+ }
+ int regnum(reg[1] - '0');
+ if (regnum < 0 || regnum > 6) {
+ throw Error("invalid register " + reg);
+ }
+ code.reg1 = regnum;
+ ++i;
+
+ if ((*i)->GetType() == ScriptToken::REGISTER) {
+ string reg2((*i)->RegisterName());
+ if (reg[0] != reg2[0]) {
+ throw Error("mixed-type commands not allowed");
+ }
+ int reg2num(reg[1] - '0');
+ if (reg2num < 0 || reg2num > 6) {
+ throw Error("invalid register " + reg2);
+ }
+ code.reg2 = reg2num;
+ } else {
+ code.reg2 = 7;
+ switch (code.type) {
+ case Script::TYPE_ADDRESS:
+ ReadScriptAddress(**i, text + cursor);
+ cursor += sizeof(void *);
+ break;
+ case Script::TYPE_INTEGER:
+ ReadScriptInteger(**i, text + cursor);
+ cursor += sizeof(int);
+ break;
+ case Script::TYPE_VECTOR:
+ ReadScriptVector(**i, text + cursor);
+ cursor += sizeof(Vector<int>);
+ break;
+ }
+ }
+ } else if (cmd == "add") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_ADD, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 2;
+ ++i;
+ const string ®((*i)->RegisterName());
+ switch (reg[0]) {
+ case 'i':
+ code.type = Script::TYPE_INTEGER;
+ break;
+ case 'v':
+ code.type = Script::TYPE_VECTOR;
+ break;
+ default:
+ throw Error("invalid register " + reg);
+ }
+ int regnum(reg[1] - '0');
+ if (regnum < 0 || regnum > 6) {
+ throw Error("invalid register " + reg);
+ }
+ code.reg1 = regnum;
+ ++i;
+
+ if ((*i)->GetType() == ScriptToken::REGISTER) {
+ string reg2((*i)->RegisterName());
+ if (reg[0] != reg2[0]) {
+ throw Error("mixed-type commands not allowed");
+ }
+ int reg2num(reg[1] - '0');
+ if (reg2num < 0 || reg2num > 6) {
+ throw Error("invalid register name " + reg2);
+ }
+ code.reg2 = reg2num;
+ } else {
+ code.reg2 = 7;
+ switch (code.type) {
+ case Script::TYPE_INTEGER:
+ ReadScriptInteger(**i, text + cursor);
+ cursor += sizeof(int);
+ break;
+ case Script::TYPE_VECTOR:
+ ReadScriptVector(**i, text + cursor);
+ cursor += sizeof(Vector<int>);
+ break;
+ }
+ }
+ } else if (cmd == "mod") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_MOD, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 2;
+ ++i;
+ const string ®((*i)->RegisterName());
+ if (reg[0] != 'i') {
+ throw Error("invalid register " + reg);
+ }
+ code.type = Script::TYPE_INTEGER;
+ int regnum(reg[1] - '0');
+ if (regnum < 0 || regnum > 6) {
+ throw Error("invalid register " + reg);
+ }
+ code.reg1 = regnum;
+ ++i;
+
+ if ((*i)->GetType() == ScriptToken::REGISTER) {
+ string reg2((*i)->RegisterName());
+ if (reg[0] != reg2[0]) {
+ throw Error("mixed-type commands not allowed");
+ }
+ int reg2num(reg[1] - '0');
+ if (reg2num < 0 || reg2num > 6) {
+ throw Error("invalid register name " + reg2);
+ }
+ code.reg2 = reg2num;
} else {
- throw Error("identifier resolution not implemented");
+ code.reg2 = 7;
+ ReadScriptInteger(**i, text + cursor);
+ cursor += sizeof(int);
}
+ } else if (cmd == "rand") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_RAND, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++i;
+ const string ®((*i)->RegisterName());
+ if (reg[0] != 'i') {
+ throw Error("invalid register " + reg);
+ }
+ code.type = Script::TYPE_INTEGER;
+ int regnum(reg[1] - '0');
+ if (regnum < 0 || regnum > 6) {
+ throw Error("invalid register " + reg);
+ }
+ code.reg1 = regnum;
+ } else if (cmd == "cmp") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_CMP, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 2;
+ ++i;
+ const string ®((*i)->RegisterName());
+ if (reg[0] != 'i') {
+ throw Error("invalid register " + reg);
+ }
+ code.type = Script::TYPE_INTEGER;
+ int regnum(reg[1] - '0');
+ if (regnum < 0 || regnum > 6) {
+ throw Error("invalid register " + reg);
+ }
+ code.reg1 = regnum;
+ ++i;
+
+ if ((*i)->GetType() == ScriptToken::REGISTER) {
+ string reg2((*i)->RegisterName());
+ if (reg[0] != reg2[0]) {
+ throw Error("mixed-type commands not allowed");
+ }
+ int reg2num(reg[1] - '0');
+ if (reg2num < 0 || reg2num > 6) {
+ throw Error("invalid register name " + reg2);
+ }
+ code.reg2 = reg2num;
+ } else {
+ code.reg2 = 7;
+ ReadScriptInteger(**i, text + cursor);
+ cursor += sizeof(int);
+ }
+ } else if (cmd == "jmp") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JMP, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jeq") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JEQ, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jne") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JNE, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jl") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JL, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jle") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JLE, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jg") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JG, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jge") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JGE, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "sysc") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_SYSC, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 0;
+ } else {
+ throw Error("unknown command " + cmd);
+ }
+ }
+
+ script->text = text;
+ script->textlen = size;
+}
+
+char *Interpreter::ReadScript(const vector<ScriptToken *> &s) {
+ char *mem(alloc.Alloc(sizeof(Script)));
+ new (mem) Script;
+ Script *script(reinterpret_cast<Script *>(mem));
+ ReadScript(s, script);
+ return mem;
+}
+
+Script::Code &Interpreter::CreateScriptCode(Script::Command c, char *dest) {
+ Script::Code &code(*reinterpret_cast<Script::Code *>(dest));
+ code.command = c;
+ code.numParams = 0;
+ code.type = Script::TYPE_NONE;
+ code.reg1 = 7;
+ code.reg2 = 7;
+ return code;
+}
+
+void Interpreter::ReadScriptAddress(const ScriptToken &t, char *dest) {
+ if (t.GetType() != ScriptToken::IDENTIFIER) {
+ throw Error("expected identifier for address");
+ }
+ if (source.IsDefined(t.Identifier())) {
+ const ParsedDefinition &def(GetDefinition(t.Identifier()));
+ void *addr(GetObject(def.type, t.Identifier()));
+ *reinterpret_cast<void **>(dest) = addr;
+ } else {
+ throw Error("postponing values in scripts not implemented");
+ }
+}
+
+void Interpreter::ReadScriptInteger(const ScriptToken &t, char *dest) {
+ if (t.GetType() == ScriptToken::IDENTIFIER) {
+ if (source.IsDefined(t.Identifier())) {
+ void *num(GetObject(TypeDescription::GetTypeId("Number"), t.Identifier()));
+ *reinterpret_cast<int *>(dest) = *reinterpret_cast<int *>(num);
} else {
- throw Error("unknown monster property: " + i->first);
+ throw Error("postponing values in scripts not implemented");
}
+ } else if (t.GetType() == ScriptToken::LITERAL) {
+ *reinterpret_cast<int *>(dest) = t.GetLiteral()->GetNumber();
+ } else {
+ throw Error("expected identifier or integer literal");
+ }
+}
+
+void Interpreter::ReadScriptVector(const ScriptToken &t, char *dest) {
+ if (t.GetType() == ScriptToken::IDENTIFIER) {
+ if (source.IsDefined(t.Identifier())) {
+ void *vec(GetObject(TypeDescription::GetTypeId("Vector"), t.Identifier()));
+ *reinterpret_cast<Vector<int> *>(dest) = *reinterpret_cast<Vector<int> *>(vec);
+ } else {
+ throw Error("postponing values in scripts not implemented");
+ }
+ } else if (t.GetType() == ScriptToken::LITERAL) {
+ *reinterpret_cast<Vector<int> *>(dest) = Vector<int>(t.GetLiteral()->GetX(), t.GetLiteral()->GetY());
+ } else {
+ throw Error("expected identifier or vector literal");
+ }
+}
+
+
+SDL_Surface *Interpreter::GetImage(const string &path) {
+ std::map<string, SDL_Surface *>::const_iterator result(imageCache.find(path));
+ if (result != imageCache.end()) {
+ return result->second;
+ } else {
+ SDL_Surface *image(IMG_Load(path.c_str()));
+ imageCache.insert(make_pair(path, image));
+ return image;
+ }
+}
+
+
+bool Interpreter::CanLink(const Value &v) const {
+ return v.IsLiteral() || source.IsDefined(v.GetIdentifier());
+}
+
+void Interpreter::Postpone(int type, int id, std::ptrdiff_t offset, const std::string &identifier, int linkedType, bool inlined) {
+ char *str(alloc.Alloc(identifier.size() + 1));
+ std::memcpy(str, identifier.c_str(), identifier.size());
+ str[identifier.size()] = '\0';
+ postponedDefinitions.push_back(PostponedDefinition(type, id, offset, str, linkedType, inlined));
+}
+
+
+void Interpreter::CreateTypeDescriptions() {
+ {
+ TypeDescription &td(TypeDescription::Create(BOOLEAN_ID, "Boolean"));
+ td.SetDescription("Logical value which can be either true or false.");
+ td.SetSize(sizeof(bool));
+ }
+ {
+ TypeDescription &td(TypeDescription::Create(COLOR_ID, "Color"));
+ td.SetDescription(
+ "A color in RGB format with an optional alpha channel.\n"
+ "Components range from 0 to 255.\n"
+ "Alpha defaults to 255 if omitted.");
+ td.SetSize(sizeof(Color));
+ }
+ {
+ TypeDescription &td(TypeDescription::Create(IMAGE_ID, "Image"));
+ td.SetDescription("Path to a PNG file with image data.");
+ td.SetSize(sizeof(SDL_Surface));
+ }
+ {
+ TypeDescription &td(TypeDescription::Create(NUMBER_ID, "Number"));
+ td.SetDescription("A signed integer.");
+ td.SetSize(sizeof(int));
+ }
+ {;
+ TypeDescription &td(TypeDescription::Create(PATH_ID, "Path"));
+ td.SetDescription("A path in the filesystem which is interpreted relative to the source file's location.");
+ td.SetSize(1);
+ td.AddSupertype(STRING_ID, 0);
+ }
+ {
+ TypeDescription &td(TypeDescription::Create(SCRIPT_ID, "Script"));
+ td.SetDescription("Collection of commands that define a behaviour.");
+ td.SetSize(sizeof(Script));
+ }
+ {
+ TypeDescription &td(TypeDescription::Create(STRING_ID, "String"));
+ td.SetDescription("Some characters.");
+ td.SetSize(1);
+ }
+ {
+ TypeDescription &td(TypeDescription::Create(VECTOR_ID, "Vector"));
+ td.SetDescription("A pair of numbers usually describing a 2D translation or offset.");
+ td.SetSize(sizeof(Vector<int>));
}
}
projects / l2e.git / blobdiff