Targeting a specific Enemy instance using uid

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Alan Dalcastagne's avatar
Alan Dalcastagne

  • Hi everyone, just want to mention that I am new to Construct. I spent most of my time understanding the event sheet system. I feel pretty comfortable with it now. So I started exploring the newly added scripting capabilities of C3. I'm progressing, but I hit a wall and I haven't been able to figure out how to move past it... I know some JavaScript but I am in no way a crack at it. Anyways, I would appreciate your help figuring out how to destroy a specific Enemy instance using the uid or other method. Here is my code: 

    runOnStartup(async runtime => {
	runtime.addEventListener("tick", () => Tick(runtime));
});

function Tick(runtime)
{

// 	const enemy = runtime.objects.Enemy.getFirstInstance();
// console.log(enemy["uid"]);

	// Test for collisions between enemies
	for (const enemyInstance of runtime.objects.Enemy.instances())
	{
		CheckEnemySelfCollision(enemyInstance, enemyInstance.uid, runtime);
	}

	function CheckEnemySelfCollision(enemyInstance, enemyUID, runtime)
	{
// 		console.log("CheckEnemySelfCollision function called");
// 		console.log(enemyInstance.uid);
// 		console.log("Enemy ID: " + enemyUID);

		for (const otherEnemies of runtime.objects.Enemy.instances())
		{
			if (enemyInstance.testOverlap(otherEnemies))
			{
				console.log("Enemies overlapping (" + enemyInstance.uid + ", " + otherEnemies.uid + ")");
				
// 				console.log(Object.getOwnPropertyNames(enemyInstance));
				
// 				Object.getOwnPropertyNames(enemyInstance).forEach(
// 					 function (val, idx, array) {
// 						console.log(val + ' -> ' + enemyInstance[val]);
// 					 }
// 				);
				
// 				enemyInstance.destroy(); // Will destroy both Enemy instances colliding. 
				enemyInstance[enemyInstance.enemyUID].destroy(); // Uncaught (in promise) TypeError: Cannot read property 'destroy' of undefined
			}
		}
	}
}

    Thank you for your time.

  • I have resolved my issue.

  • I have a lot to chew on but my future self will definitely be asking you about this -

  • I have resolved my issue.

    Hi DFORMS

    Do you mind sharing how did you do it?

    I can't find anywhere on the Manual or the C3 Examples

    I would like to know how to Pick an instance by UID From a dictionary Value or a variable or just how to pick by UID in general

    Ps: I'm new to Js so I have no clue at all I'm just learning

    Thanks

  • Hi tarek2, I just saw the notification for your post in my email. I'm a little busy this morning with work, but I will post later today.

  • I've written a

    function

    that helps you filter from the criteria in the event table to whatever you want to filter. 

    	//alert('Hello world!');
	 function getIns(a,runtime) {
 const ins =runtime.objects[a];
 for(const insins of ins.getPickedInstances())
 {
 return insins;
 }
 
 }

	fun

    You can get the

    name of the obj

    you want to get! 

    	//alert('Hello world!');
	const player =getIns("player",runtime);
	You got it!

    Of course, this is just my way! If there is a better and faster way, please let me know! I want to share him, you can get started quickly!

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  • Thanks a lot chunchun really helpful

    DFORMS No worries mate, thanks for responding

  • Hi tarek, sorry for not replying yesterday. I was swamped... Alright, so I went back and had a look at what I came up with. I ended up using the event-sheet and a 2D array.

    Edit 1:

    Patrol 0 is moving left and patrol 1 is moving right.

    Edit 2:

    I only use the scripting when I can't get something to work with the event-sheet. Which is not often.

    Let me know if you have any additional questions.

  • Hi tarek, sorry for not replying yesterday. I was swamped... Alright, so I went back and had a look at what I came up with. I ended up using the event-sheet and a 2D array.

    Edit 1:

    Patrol 0 is moving left and patrol 1 is moving right.

    Edit 2:

    I only use the scripting when I can't get something to work with the event-sheet. Which is not often.

    Let me know if you have any additional questions.

    Ho no worries thanks very much)

  • You're welcome and good luck!

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