[wimmer92]

Hello everybody,

 

I’ve got a simple demo project, where i want to create a json level, load this json level and then modify entries in this level.

Here is the Code of the main.qml:

 

import VPlay 1.0
import QtQuick 1.1
import Box2D 1.0

GameWindow {
    id: window

    Scene
    {
        id:mainScene
        anchors.fill: parent

        EntityManager
        {
            id:entityManager
        }

        LevelEditor
        {
            id:levelEditor
            applicationJSONLevelsDirectory: "levels/"
            entityManagerItem: entityManager
        }

        SimpleButton
        {
            anchors.horizontalCenter: parent.horizontalCenter
            text:"Override existing levelData"
            onClicked:
            {
               var customValue = 5;
               levelEditor.saveCurrentLevel({customData: { customValue: customValue}});
            }
        }

        SimpleButton
        {
            anchors.left: parent.left
            text:"SAVE"
            onClicked:
            {
                levelEditor.clearAllLevels();

                var levelId = "1"
                var levelName ="TestLevel";

                var customValue = 10;

                var saveProperties  = {levelMetaData:{ levelId: levelId, levelName: levelName}, customData: { customValue: customValue}};

                levelEditor.createNewLevel()
                levelEditor.saveCurrentLevel(saveProperties);
                levelEditor.exportLevelAsFile();
            }
        }

        SimpleButton
        {
            anchors.right: parent.right
            text:"LOAD"
            onClicked:
            {
                levelEditor.loadSingleLevel(levelEditor.applicationJSONLevels[0]);

                console.log(
                            "LevelId: "+levelEditor.currentLevelData.levelMetaData.levelId+"\n"+
                            "LevelName: "+levelEditor.currentLevelData.levelMetaData.levelName+"\n"+
                            "CustomValue: "+levelEditor.currentLevelData.customData.customValue);
            }
        }

        Text
        {
            id:textOfGround
            anchors.centerIn: parent
            text:ground
        }
    }
}

 

*First of all I export the level to a json file -> This works

*Then i copy this json file into my levels-folder and the load the level and log all the informations -> This works

 

Now i want to change the value of a custom value by calling:

levelEditor.saveCurrentLevel({customData: { customValue: customValue}});

…where customValue have been changed now.

 

My question now: How is it possible to change the customData of a .json Level at runtime ?

 

Greets,

Thomas

[ChristianFelgo Team]

Hi Thomas,

you can either extend your level from LevelBase and use levelData.customData.

Or you can create your own property variant customData and set this one when you are loading the level, and when you are calling the saveLevel you provide the value of this property to the saveLevel() function.

Cheers, Chris

[wimmer92]

Thanks for your Answer Chris !,

 

in my case i don’t need a Levelbase. I basically just want to override an existing entry in a json level with a new one.

For Example:

 

I have a json level called TestLevel.json which looks like: {“entityData”:{},”editableComponentData”:{},”levelMetaData”:…..,”customData”:{“customValue”:10}}

Now i want to override the value of customValue by calling with 5 so that my TestLevel.json looks like the following after this call:

{“entityData”:{},”editableComponentData”:{},”levelMetaData”:…..,”customData”:{“customValue”:5}}

 

Is there a way to that ? Cause the following code, just overrides the authorgenerated levels.

levelEditor.saveCurrentLevel({customData: { customValue: customValue}});

 

For authorgenerated levels this works perfectly, but I want to override a real entry in my json file

 

Cheers,

Thomas

[ChristianFelgo Team]

Please see here:

Christian said:
Or you can create your own property variant customData and set this one when you are loading the level, and when you are calling the saveLevel you provide the value of this property to the saveLevel() function.

 

[wimmer92]

import VPlay 1.0
import QtQuick 1.1

GameWindow {
    activeScene: scene
    
    Scene {
        id: scene

        property variant customData;

        EntityManager
        {
            id:entityManager
        }

        LevelEditor
        {
            id:levelEditor
            applicationJSONLevelsDirectory: "levels/"
            entityManagerItem: entityManager
        }

        SimpleButton
        {
            anchors.centerIn: parent
            text:"DO IT"
            onClicked:
            {
                //Load the json level from the levels folder
                levelEditor.loadSingleLevel(levelEditor.applicationJSONLevels[0]);

                //Save the customData in the property
                scene.customData = levelEditor.currentLevelData.customData;

                //Print actual value of customData
                console.log(scene.customData.customValue)

                //Modify customData
                var newValue = 1234567890;
                scene.customData = {"customValue":newValue};

                //Print actual value of customData
                console.log(scene.customData.customValue)

                var saveProperties = { levelMetaData: levelEditor.currentLevelData.levelMetaData, customData: scene.customData };
                levelEditor.saveCurrentLevel(saveProperties);

                //The json file haven't changed now !
            }
        }
    }
}

My .json File:

{“levelMetaData”:{“levelId”:”1″,”levelName”:”TestLevel”,”storageLocation”:”applicationJSON”},”customData”:{“customValue”:10}}

 

The value called “customValue” does not change in the file, but in the authorgenerated level it does.

 

What I’m doing wrong ?

[ChristianFelgo Team]

Ahh, now I see what you are trying to do. 😉

A call of saveLevel() only modifies the authorGeneratedLevels storage. If you want to store your new level as a JSON file, call exportLevelAsFile(). You can also find this explained in the doc here.

Cheers, Chris