[Michael]

Hi,

 

I’m having problems with a game I’m working on. I want the game to change to a retry scene when my player collides with an obstacle. I’ve created a retryscene.qml and referenced it in my main file and my state changer but I don’t know what instructions I should add to the boxcollider to make the change happen. My BoxCollider looks like this.

  BoxCollider {
    anchors.fill: target1
    bodyType: Body.Static
    collisionTestingOnlyMode: true
    fixture.onBeginContact: {
       scene.stopGame()
       // Play a collision sound
       collisionSound1.play();
       // Go to retry Scene
       
    }
}

Does anyone know what to write that will make this happen? 99% sure I’ve done everything else correctly, just don’t know what the command should be.

 

Alternatively, if someone knows a better way to do this please let me know.

[AlexFelgo Team]

Hi Michael,

there are a number of ways to handle the scene changes, e.g. state machines that we use in some of our examples. I’d recommend having a look at this tutorial, and in your case especially this part can be of most interest.
(anyway it’s a short tutorial so take some minutes and read the whole thing! 🙂

If there are still questions left after, I’m happy to help you!

Cheers,
Alex

[Michael]

Hi Alex,

Thanks for your answer. I looked at the tutorial again and ultimately decided to change my approach. Now I’m using the state machine so that in my game scene I have this function

function stopGame() {
            scene.gameState = "gameOver"
                }

and then in my state machine I’ve said

// menuScene is our first scene, so set the state to menu initially
    state: "menu"
    activeScene: menuScene

    // state machine, takes care reversing the PropertyChanges when changing the state, like changing the opacity back to 0
    states: [
        State {
            name: "menu"
            PropertyChanges {target: menuScene; opacity: 1}
            PropertyChanges {target: window; activeScene: menuScene}
        },
        State {
            name: "selectLevel"
            PropertyChanges {target: selectLevelScene; opacity: 1}
            PropertyChanges {target: window; activeScene: selectLevelScene}
        },
        State {
            name: "credits"
            PropertyChanges {target: creditsScene; opacity: 1}
            PropertyChanges {target: window; activeScene: creditsScene}
        },
        State {
            name: "game"
            PropertyChanges {target: gameScene; opacity: 1}
            PropertyChanges {target: window; activeScene: gameScene}
        },
        State {
            name: "gameOver"
            PropertyChanges {target: retryScene; opacity: 1}
            PropertyChanges {target: window; activeScene: retryScene}
        }
    ]

I also have added a RetryScene.qml

 

import Felgo 3.0
import QtQuick 2.0
import "../common"

SceneBase {
    id:retryScene

    // background
    Rectangle {
        anchors.fill: parent.gameWindowAnchorItem
        color: "darkred"
    }

    // back button to leave scene
    MenuButton {
        text: "Back"
        // anchor the button to the gameWindowAnchorItem to be on the edge of the screen on any device
        anchors.right: retryScene.gameWindowAnchorItem.right
        anchors.rightMargin: 10
        anchors.top: retryScene.gameWindowAnchorItem.top
        anchors.topMargin: 10
        onClicked: backButtonPressed()
    }

    // credits
    Text {
        text: "Game Over"
        color: "white"
        anchors.centerIn: parent
    }
}

and listed it in the gamewindow of my main.qml

 

RetryScene {
        id: retryScene
        onBackButtonPressed: window.state = "selectLevel"
    }

But when the stopGame function is called, nothing happens. Any ideas as to what’s happening?

[AlexFelgo Team]

The state machine listens on the state property of the item where it’s defined. So if it is defined in your GameWindow, with the id window, then calling scene.gameState = “gameOver” will not have any effect, instead it should be window.state = “gameOver”, just like you are doing it in the onBackButtonPressed signal handler of your RetryScene (window.state = “selectLevel”).

Cheers,
Alex

• This reply was modified 8 years, 11 months ago by  Alex.
• This reply was modified 8 years, 11 months ago by  Alex.

[Michael]

Thanks Alex,

I knew it was something simple that I was overlooking. Works perfectly now.

Michael.