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introduced a small delay after flip if the screen is not a hardware surface
[l2e.git] / src / loader / Interpreter.cpp
diff --git a/src/loader/Interpreter.cpp b/src/loader/Interpreter.cpp
index 0fd2d883fba0a8129b3a896dd56d37f35e4af96f..5adb08e237f20b42c4fb6b9bf4cdf7cfa462d981 100644 (file)
--- a/src/loader/Interpreter.cpp
+++ b/src/loader/Interpreter.cpp
@@ -343,9 +343,16 @@ void Interpreter::ReadObject(int typeId, int id, char *object, const PropertyLis
 
 
 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::COMMAND) {
+               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;
@@ -413,6 +420,58 @@ void Interpreter::ReadScript(const std::vector<ScriptToken *> &s, Script *script
                        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");
+                       }
+                       size += sizeof(int);
+                       ++i;
+                       if (i == end) {
+                               throw Error("unexpected script end after cmp");
+                       }
+               } 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 {
@@ -423,6 +482,9 @@ void Interpreter::ReadScript(const std::vector<ScriptToken *> &s, Script *script
        unsigned char *text(reinterpret_cast<unsigned char *>(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");
                }
@@ -520,6 +582,91 @@ void Interpreter::ReadScript(const std::vector<ScriptToken *> &s, Script *script
                        } else {
                                throw Error("unexpected register " + reg);
                        }
+               } else if (cmd == "cmp") {
+                       ++i;
+                       const string &reg((*i)->RegisterName());
+                       ++i;
+                       if (reg == "i0") {
+                               if ((*i)->GetType() == ScriptToken::REGISTER && (*i)->RegisterName() == "i1") {
+                                       text[cursor] = Script::CODE_CMP_I0_I1;
+                                       ++cursor;
+                               } else {
+                                       text[cursor] = Script::CODE_CMP_I0;
+                                       ++cursor;
+                                       ReadScriptInteger(**i, text + cursor);
+                                       cursor += sizeof(int);
+                               }
+                       } else if (reg == "i1") {
+                               text[cursor] = Script::CODE_CMP_I1;
+                               ++cursor;
+                               ReadScriptInteger(**i, text + cursor);
+                               cursor += sizeof(int);
+                       } else {
+                               throw Error("cannot use " + reg + " as lhs for comparison");
+                       }
+               } else if (cmd == "jmp") {
+                       text[cursor] = Script::CODE_JUMP;
+                       ++cursor;
+                       ++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") {
+                       text[cursor] = Script::CODE_JUMP_EQUAL;
+                       ++cursor;
+                       ++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") {
+                       text[cursor] = Script::CODE_JUMP_NOT_EQUAL;
+                       ++cursor;
+                       ++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") {
+                       text[cursor] = Script::CODE_JUMP_LESS;
+                       ++cursor;
+                       ++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") {
+                       text[cursor] = Script::CODE_JUMP_LESS_EQUAL;
+                       ++cursor;
+                       ++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") {
+                       text[cursor] = Script::CODE_JUMP_GREATER;
+                       ++cursor;
+                       ++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") {
+                       text[cursor] = Script::CODE_JUMP_GREATER_EQUAL;
+                       ++cursor;
+                       ++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") {
                        text[cursor] = Script::CODE_SYSCALL;
                        ++cursor;
@@ -544,9 +691,9 @@ void Interpreter::ReadScriptAddress(const ScriptToken &t, unsigned char *dest) {
        if (t.GetType() != ScriptToken::IDENTIFIER) {
                throw Error("expected identifier for address");
        }
-       if (source.IsDefined(t.GetIdentifier())) {
-               const ParsedDefinition &def(GetDefinition(t.GetIdentifier()));
-               void *addr(GetObject(def.type, t.GetIdentifier()));
+       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");
@@ -555,8 +702,8 @@ void Interpreter::ReadScriptAddress(const ScriptToken &t, unsigned char *dest) {
 
 void Interpreter::ReadScriptInteger(const ScriptToken &t, unsigned char *dest) {
        if (t.GetType() == ScriptToken::IDENTIFIER) {
-               if (source.IsDefined(t.GetIdentifier())) {
-                       void *num(GetObject(TypeDescription::GetTypeId("Number"), t.GetIdentifier()));
+               if (source.IsDefined(t.Identifier())) {
+                       void *num(GetObject(TypeDescription::GetTypeId("Number"), t.Identifier()));
                        *reinterpret_cast<int *>(dest) = *reinterpret_cast<int *>(num);
                } else {
                        throw Error("postponing values in scripts not implemented");
@@ -570,8 +717,8 @@ void Interpreter::ReadScriptInteger(const ScriptToken &t, unsigned char *dest) {
 
 void Interpreter::ReadScriptVector(const ScriptToken &t, unsigned char *dest) {
        if (t.GetType() == ScriptToken::IDENTIFIER) {
-               if (source.IsDefined(t.GetIdentifier())) {
-                       void *vec(GetObject(TypeDescription::GetTypeId("Vector"), t.GetIdentifier()));
+               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");
@@ -610,12 +757,12 @@ void Interpreter::Postpone(int type, int id, std::ptrdiff_t offset, const std::s
 
 void Interpreter::CreateTypeDescriptions() {
        {
-               TypeDescription &td(TypeDescription::CreateOrGet("Boolean"));
+               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::CreateOrGet("Color"));
+               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"
@@ -623,34 +770,33 @@ void Interpreter::CreateTypeDescriptions() {
                td.SetSize(sizeof(Color));
        }
        {
-               TypeDescription &td(TypeDescription::CreateOrGet("Image"));
+               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::CreateOrGet("Number"));
+               TypeDescription &td(TypeDescription::Create(NUMBER_ID, "Number"));
                td.SetDescription("A signed integer.");
                td.SetSize(sizeof(int));
        }
-       {
-               int stringId(TypeDescription::GetTypeId("String"));
-               TypeDescription &td(TypeDescription::CreateOrGet("Path"));
+       {;
+               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(stringId, 0);
+               td.AddSupertype(STRING_ID, 0);
        }
        {
-               TypeDescription &td(TypeDescription::CreateOrGet("Script"));
+               TypeDescription &td(TypeDescription::Create(SCRIPT_ID, "Script"));
                td.SetDescription("Collection of commands that define a behaviour.");
                td.SetSize(sizeof(Script));
        }
        {
-               TypeDescription &td(TypeDescription::CreateOrGet("String"));
+               TypeDescription &td(TypeDescription::Create(STRING_ID, "String"));
                td.SetDescription("Some characters.");
                td.SetSize(1);
        }
        {
-               TypeDescription &td(TypeDescription::CreateOrGet("Vector"));
+               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>));
        }
an attempt to reimplement Lufia 2