How do I get a clicked object?
CP7 wrote ...
2019/6/13
How do I get a clicked object?
do you mean to ask how do you make an object do something when clicked on? if that's what you want to know then here's the answer if not please tell me. you insert this if statement into the coding of the object you want to activate when clicked on:
1 2 3 4 | if(Greenfoot.mouseClicked(this)){ //what you want the actor to do when clicked on} |
I basically wanna do this:
I have a deck and multiple cards on the screen, with different suits and values and I want to get the value and suit of the clicked card when it's clicked
1 2 3 4 5 | if (Greenfoot.mouseClicked(Card.class)){ Card card = //(get clicked object); currentValue = card.getCurrentValue();} |
The "mouseClicked" method requires an object, not a class. So you either do it like Nosson suggested and check a click in the Card class' act method and then send the value to where ever you need it. Or the object in which you need the value has a reference to the card object and then can check for a click on that object.
That depends on which way you want to go.
Is that code in the active world?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | //reference to the cardprivate Card card;//you will most likely replace that with an array of cards if you have multiple ones, but first, let's take it simple//creating the card and adding it to the worldaddObject(card = new Card(), <x>, <y>);//checking if a click on the card happenedif (Greenfoot.mouseClicked(card)) //I personally prefer mousePressed but that's obviously up to you{ //…} |
Sorry, I should've explained this better, but I have multiple cards on the screen, so lets say a 7 of Hearts and 2 of Spades in my hand. When I click on the 7 of Hearts, I want to specifically get that card and call the method card.getCardValue(), which would return "7".
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | //reference to all cards in handprivate ArrayList<Card> cardsInHand = new ArrayList<Card>();//whenever card x moves to the handcardsInHand.add(x);//whenever card x is removed from the handcardsInHand.remove(x);//check if any card is clickedfor (Card card : cardsInHand){ if (Greenfoot.mouseClicked(card)) { //call card.getCardValue() here and do with it whatever you want }} |
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