XMLGameEngine - game.xml

<game>
    <window title="Pong" width="1280" height="720" background="color.black" fullscreen="false" framerate="60" />
    <variables>
        <variable name="margin" value="30" />
        <variable name="radius" value="10" />
        <variable name="width" value="30" />
        <variable name="height" value="150" />
        <variable name="step" value="2" />
  </variables>
    <objects>
        <object name="logo">
            <sprite src="shape.circle(radius)" />
            <position x="screen.width.center - radius" y="screen.height.center - radius" />
            <velocity x="0" y="0" />
            <actions>
                <action start="state.playing" />
            </actions>
        </object>
        <object name="ball">
            <sprite src="shape.circle(radius)" />
            <position x="screen.width.center - radius" y="screen.height.center - radius" />
            <velocity x="random.range(-10,10)" y="random.range(-5,5)" />
        </object>
        <object name="paddle1">
            <sprite src="shape.rectangle(width,height)" />
            <position x="screen.left + margin" y="screen.height.center - height / 2" />
            <velocity x="0" y="0" />
            <collision enabled="true" />
            <actions>
                <action name="up" value="move.up(step)" />
                <action name="down" value="move.down(step)" />
            </actions>
        </object>
        <object name="paddle2">
            <sprite src="shape.rectangle(width,height)" />
            <position x="screen.right - margin - width" y="screen.height.center - height / 2" />
            <velocity x="0" y="0" />
            <collision enabled="true" />
            <actions>
                <action name="up" value="move.up(step)" />
                <action name="down" value="move.down(step)" />
            </actions>
        </object>
    </objects>
    <states>
        <state name="mainmenu">
            <show object="logo" />
            <inputs>
                <input action="logo.action.start" button="enter" />
            </inputs>
        </state>
        <state name="settings">
            <show object="logo" />
            <inputs>
                <input action="game.unpause" button="escape" />
            </inputs>
        </state>
        <state name="playing">
            <show object="ball" />
            <show object="paddle1" />
            <show object="paddle2" />
            <inputs>
                <input action="paddle1.action.up" button="q" />
                <input action="paddle1.action.down" button="z" />
                <input action="paddle2.action.up" button="up" />
                <input action="paddle2.action.down" button="down" />
            </inputs>
        </state>
        <state name="paused">
            <show object="logo" />
            <inputs>
                <input action="game.start" button="spacebar" />
            </inputs>
        </state>
    </states>
</game>