Ejemplo n.º 1
0
        public void evalInstruction(InstructionExpression instr)
        {
            if (instr is ValueExpression)
            {
                valueExp = (ValueExpression)instr;

                if (valueExp.type == ObjectType.intType)
                {
                    variables.Add(valueExp.name, new ObjectExpression(valueExp.type, 0));
                }
                else if (valueExp.type == ObjectType.booleanType)
                {
                    variables.Add(valueExp.name, new ObjectExpression(valueExp.type, false));
                }
                else if (valueExp.type == ObjectType.stringType)
                {
                    variables.Add(valueExp.name, new ObjectExpression(valueExp.type, ""));
                }

                if (valueExp.value != null)
                {
                    variables[valueExp.name] = new ObjectExpression(valueExp.type, evalSimpleExpression(valueExp.value).value);
                }

                return;
            }
            else if (instr is AssignExpression)
            {
                assignExp = (AssignExpression)instr;

                variables[assignExp.name] = evalSimpleExpression(assignExp.value);

                return;
            }
            else if (instr is OpenMsgDialogInstruction)
            {
                gScreen.msgBox.openBox();
                return;
            }
            else if (instr is MsgDisplayInstruction)
            {
                msgExp = (MsgDisplayInstruction)instr;

                o1 = evalSimpleExpression(msgExp.msg);

                if (o1.type != ObjectType.stringType)
                {
                    return;
                }

                gScreen.msgBox.setText((string)o1.value);

                return;
            }
            else if (instr is NextMsgDialogInstruction)
            {
                shouldEvalSeq = false;
                gScreen.msgBox.showNextButton();
                return;
            }
            else if (instr is CloseMsgDialogInstruction)
            {
                shouldEvalSeq = false;
                gScreen.msgBox.showCloseButton();
                return;
            }
            else if (instr is SwitchCharacterInstruction)
            {
                try
                {
                    gScreen.msgBox.switchCharacter(IrisData.characters[((SwitchCharacterInstruction)instr).character.name]);
                }
                catch (Exception e)
                {
                    return;
                }

                return;
            }
            else if (instr is RemoveCharacter)
            {
                gScreen.msgBox.removeCharacter();
                return;
            }
            else if (instr is SetVariableInstruction)
            {
                setExp = (SetVariableInstruction)instr;

                /*if (!playerVariables.ContainsKey(setExp.variable.name))
                {
                    playerVariables.Add(setExp.variable.name, -1);
                }

                playerVariables[setExp.variable.name] = (int)(evalSimpleExpression(setExp.value).value);*/
                IrisData.setPlayerVariable(setExp.variable.name, (int)(evalSimpleExpression(setExp.value).value));

                return;
            }
            else if (instr is InputInstruction)
            {
                inputExp = (InputInstruction)instr;

                o1 = variables[inputExp.name];

                shouldEvalSeq = false;

                if (o1.type == ObjectType.intType)
                {
                    gScreen.iBox.openBox(InputBox.InputType.INT_INPUT);

                    lastInstr = inputExp;
                }
                else if (o1.type == ObjectType.stringType)
                {
                    gScreen.iBox.openBox(InputBox.InputType.STRING_INPUT);

                    lastInstr = inputExp;
                }

                return;
            }
            else if (instr is MenuInstruction)
            {
                menuExp = (MenuInstruction)instr;
                shouldEvalSeq = false;

                gScreen.menBox.setChoices(((MenuInstruction)instr).choices);
                gScreen.menBox.openMenu();

                lastInstr = menuExp;

                return;
            }
            else if (instr is PlayMediaInstruction)
            {
                playExp = (PlayMediaInstruction)instr;

                /*if (!IrisData.sounds.ContainsKey(playExp.name))
                {
                    return;
                }*/
                //else if(IrisData.
                try
                {
                    gScreen.playMedia(IrisData.sounds[playExp.name]);
                }
                catch (Exception e)
                {
                    return;
                }

                return;
            }
            else if (instr is StopMediaInstruction)
            {
                gScreen.stopMedia();
                return;
            }
            else if (instr is ShowImageInstruction)
            {
                showExp = (ShowImageInstruction)instr;

                if (showExp.image is VariableExpression)
                {
                    img = IrisData.images[((VariableExpression)showExp.image).name];
                }
                else
                {
                    memberExp = (MemberAccessExpression)showExp.image;

                    charac = IrisData.characters[memberExp.name];
                    img = charac.getImage(memberExp.field);
                }

                gScreen.showImage(img, showExp.position);

                return;
            }
            else if (instr is SetBackgroundInstruction)
            {
                bgdInstr = (SetBackgroundInstruction)instr;

                try
                {
                    gScreen.setBackground(IrisData.backgrounds[bgdInstr.image.name]);
                }
                catch (Exception e)
                {
                    return;
                }

                return;
            }
            else if (instr is CleanBackgroundInstruction)
            {
                gScreen.clearBackground();
                return;
            }
            else if (instr is CleanForegroundInstruction)
            {
                gScreen.clearForeGround();
                return;
            }
            else if (instr is GotoInstruction)
            {
                gotoExp = (GotoInstruction)instr;

                npcExp = gotoExp.npc;

                evalExpression(IrisData.npcs[npcExp.npc].labels[npcExp.label]);

                return;
            }
        }
Ejemplo n.º 2
0
        public Expression parseExpression()
        {
            List<Expression> exps = new List<Expression>();
            bool parseEnd = false;

            while (!parseEnd)
            {
                switch (currentToken.type)
                {
                    case Token.TokenValue.IF:
                        exps.Add(parseIfExpression());
                        break;

                    case Token.TokenValue.SWITCH:
                        exps.Add(parseSwitchExpression());
                        break;

                    case Token.TokenValue.FOR:
                        exps.Add(parseForExpression());
                        break;

                    case Token.TokenValue.WHILE:
                        exps.Add(parseWhileExpression());
                        break;

                    case Token.TokenValue.DO:
                        exps.Add(parseDoWhileExpression());
                        break;

                    case Token.TokenValue.TYPE_IDENTIFIER:
                        exps.Add(parseValueExpression());
                        break;

                    case Token.TokenValue.VALUE_IDENTIFIER:
                        nextToken();

                        if (currentTokenEquals(Token.TokenValue.TWOPOINTS))
                        {
                            previousToken();
                            parseEnd = true;
                        }
                        else if (isAnAssignOperator(currentToken.type))
                        {
                            previousToken();
                            exps.Add(parseAssignExpression());
                            nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        }
                        else
                        {
                            throw new SyntaxError(lineNumber, colNumber, Token.TokenValue.EQ);
                        }
                        break;

                    //**TODO**
                    case Token.TokenValue.SET:
                        SetVariableInstruction setExp = new SetVariableInstruction();

                        nextToken();

                        if (currentTokenEquals(Token.TokenValue.PLAYER_VALUE_IDENTIFIER))
                        {
                            setExp.variable = new CharacterVariableExpression(currentToken.stringValue);
                            nextToken();

                            nextTokenIfEquals(Token.TokenValue.COMMA);

                            setExp.value = parseSimpleExpression();

                            nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        }
                        else
                        {
                            throw new SyntaxError(lineNumber, colNumber, Token.TokenValue.PLAYER_VALUE_IDENTIFIER);
                        }

                        exps.Add(setExp);
                        break;

                    case Token.TokenValue.OPENDLG:
                        nextToken();
                        nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        exps.Add(new OpenMsgDialogInstruction());
                        break;

                    case Token.TokenValue.MSG:
                        MsgDisplayInstruction mes = new MsgDisplayInstruction();

                        nextToken();

                        mes.msg = parseSimpleExpression();

                        if (mes.msg.getExpressionType() != ObjectType.stringType)
                        {
                            throw new IncompatibleTypesException(lineNumber, colNumber, ObjectType.stringType, mes.msg.getExpressionType());
                        }

                        nextTokenIfEquals(Token.TokenValue.SEMICOLON);

                        exps.Add(mes);
                        break;

                    case Token.TokenValue.NEXTDLG:
                        nextToken();
                        nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        exps.Add(new NextMsgDialogInstruction());
                        break;

                    case Token.TokenValue.CLOSEDLG:
                        nextToken();
                        nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        exps.Add(new CloseMsgDialogInstruction());
                        break;

                    case Token.TokenValue.PLAY:
                        PlayMediaInstruction play = new PlayMediaInstruction();

                        nextToken();

                        if (currentTokenEquals(Token.TokenValue.VALUE_IDENTIFIER))
                        {
                            play.name = currentToken.stringValue;

                            nextToken();
                            nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        }
                        else
                        {
                            throw new SyntaxError(lineNumber, colNumber, Token.TokenValue.VALUE_IDENTIFIER);
                        }

                        exps.Add(play);
                        break;

                    case Token.TokenValue.STOP:
                        exps.Add(new StopMediaInstruction());
                        nextToken();
                        nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        break;

                    case Token.TokenValue.SHOW:
                        ShowImageInstruction show = new ShowImageInstruction();
                        string position;

                        nextToken();

                        if (currentTokenEquals(Token.TokenValue.VALUE_IDENTIFIER))
                        {
                            show.image = parsePathExpression();

                            nextTokenIfEquals(Token.TokenValue.COMMA);

                            //TODO
                            if (currentTokenEquals(Token.TokenValue.VALUE_IDENTIFIER))
                            {
                                position = currentToken.stringValue;

                                switch (position)
                                {
                                    case "LEFT":
                                    case "left":
                                        show.position = GameScreen.LEFT;
                                        break;

                                    case "CENTER":
                                    case "center":
                                        show.position = GameScreen.CENTER;
                                        break;

                                    case "RIGHT":
                                    case "right":
                                        show.position = GameScreen.RIGHT;
                                        break;

                                    default:
                                        //TODO
                                        throw new SyntaxError(lineNumber, colNumber, Token.TokenValue.VALUE_IDENTIFIER);
                                }
                            }

                            nextTokenIfEquals(Token.TokenValue.VALUE_IDENTIFIER);

                            nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        }

                        exps.Add(show);
                        break;

                    case Token.TokenValue.SWITCHCHAR:
                        SwitchCharacterInstruction switchChar = new SwitchCharacterInstruction();

                        nextToken();

                        if (currentTokenEquals(Token.TokenValue.VALUE_IDENTIFIER))
                        {
                            switchChar.character = new VariableExpression(currentToken.stringValue);
                            nextToken();
                            nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        }
                        else
                        {
                            throw new SyntaxError(lineNumber, colNumber, Token.TokenValue.VALUE_IDENTIFIER);
                        }

                        exps.Add(switchChar);
                        break;

                    case Token.TokenValue.SETBGD:
                        SetBackgroundInstruction bgdInstr = new SetBackgroundInstruction();

                        nextToken();

                        if (currentTokenEquals(Token.TokenValue.VALUE_IDENTIFIER))
                        {
                            bgdInstr.image = new VariableExpression(currentToken.stringValue);
                            nextToken();
                            nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        }
                        else
                        {
                            throw new SyntaxError(lineNumber, colNumber, Token.TokenValue.VALUE_IDENTIFIER);
                        }

                        exps.Add(bgdInstr);
                        break;

                    case Token.TokenValue.CLEANBGD:
                        exps.Add(new CleanBackgroundInstruction());
                        nextToken();
                        nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        break;

                    case Token.TokenValue.CLEANFGD:
                        exps.Add(new CleanForegroundInstruction());
                        nextToken();
                        nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        break;

                    case Token.TokenValue.REMOVECHAR:
                        nextToken();
                        nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        exps.Add(new RemoveCharacter());
                        break;

                    case Token.TokenValue.GOTO:
                        GotoInstruction gotoInstr = new GotoInstruction();

                        nextToken();

                        gotoInstr.npc = parseNpcMemberExpression();

                        nextTokenIfEquals(Token.TokenValue.SEMICOLON);

                        exps.Add(gotoInstr);
                        break;

                    case Token.TokenValue.INPUT:
                        InputInstruction inputInstr = new InputInstruction();

                        nextToken();

                        if (currentTokenEquals(Token.TokenValue.VALUE_IDENTIFIER))
                        {
                            inputInstr.name = currentToken.stringValue;
                            nextToken();
                            nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        }
                        else
                        {
                            throw new SyntaxError(lineNumber, colNumber, Token.TokenValue.VALUE_IDENTIFIER);
                        }

                        exps.Add(inputInstr);
                        break;

                    case Token.TokenValue.MENU:
                        MenuInstruction menuInstr = new MenuInstruction();

                        nextToken();
                        nextTokenIfEquals(Token.TokenValue.LPAR);

                        if (currentTokenEquals(Token.TokenValue.RPAR))
                        {
                            throw new EmptyExpression(lineNumber, colNumber);
                        }

                        if (currentTokenEquals(Token.TokenValue.STRING))
                        {
                            menuInstr.addChoice(currentToken.stringValue);
                            nextToken();
                        }
                        else
                        {
                            throw new SyntaxError(lineNumber, colNumber, Token.TokenValue.STRING);
                        }

                        while (!currentTokenEquals(Token.TokenValue.RPAR))
                        {
                            nextTokenIfEquals(Token.TokenValue.COMMA);

                            if (currentTokenEquals(Token.TokenValue.STRING))
                            {
                                menuInstr.addChoice(currentToken.stringValue);
                                nextToken();
                            }
                            else
                            {
                                throw new SyntaxError(lineNumber, colNumber, Token.TokenValue.STRING);
                            }
                        }

                        nextTokenIfEquals(Token.TokenValue.RPAR);
                        nextTokenIfEquals(Token.TokenValue.LBRACE);

                        while (currentTokenEquals(Token.TokenValue.CASE))
                        {
                            if (menuInstr.hasDefaultCase)
                            {
                                throw new CaseException(lineNumber, colNumber);
                            }

                            menuInstr.addCase(parseCase());
                        }

                        if (currentTokenEquals(Token.TokenValue.DEFAULT))
                        {
                            if (menuInstr.hasDefaultCase)
                            {
                                throw new DefaultCaseException(lineNumber, colNumber);
                            }

                            menuInstr.addCase(parseCase());
                        }

                        nextTokenIfEquals(Token.TokenValue.RBRACE);

                        exps.Add(menuInstr);
                        break;

                    case Token.TokenValue.END:
                        nextToken();
                        nextTokenIfEquals(Token.TokenValue.SEMICOLON);
                        exps.Add(new EndInstruction());
                        break;

                    default:
                        parseEnd = true;
                        break;
                }
            }

            switch (exps.Count)
            {
                case 0:
                    return null;

                case 1:
                    return exps.ElementAt(0);

                default:
                    return new SequenceExpression(exps);
            }
        }