Game World Properties Global Observable Variables (FXGL 11)

You can declare game vars in your application class as follows:

    @Override
    protected void initGameVars(Map<String, Object> vars) {
        // this creates an observable integer variable with value 3
        vars.put("lives", 3);
    }

PropertyMap state = FXGL.getWorldProperties();

There are five types of used values:

• boolean
• int
• double
• String
• Object (anything not from above falls under this category)

Each value has a name associated with it. A raw value can be accessed by:

int lives = state.getInt("lives");

Each value is backed up by a JavaFX Property. This means you can listen for changes and you can also bind to the properties for auto-updates. A property value can be accessed by:

IntegerProperty livesProperty = state.intProperty("lives");

Finally, you can edit the values by using:

state.setValue("lives", 5);