Hello,I have a rather simple question to ask. I would like to store the value of a URL parameter in an integer, how do I go on about doing that?Here's my current situation:

Thank you in advance for any help. :D

Try asking in the scripting forum:

https://www.construct.net/en/forum/construct-3/scripting-51

Apparently I was "painting" with black lines oin the DrawingCanvas so for some reason all values were zero (even the drawn ones), I changed color and now it works fine. :D

Heeey thanks for the help! :D

I almost got it working but for some reason the playerPixels varaiable is giving me an array of zeros even when I draw on the Drawing canvas so I can't compare between the two DrawingCanvases.

Here's how I call the getImagePixelData() of the two DrawingCanvases:

	function load(playerImage, computerImage)
{
	playerImage.getImagePixelData().then(playerData=>loadComputerData (playerData,computerImage));
}

function loadComputerData (playerData, computerImage) {

	computerImage.getImagePixelData().then (computerData=>compare(playerData, computerData));
}

You need to execute "DrawingCanvas Save snapshot" action, wait for it to complete, and then you can read pixels with expressions, for example:

DrawingCanvas.SnapshotRedAt(10,20)

DrawingCanvas.SnapshotGreenAt(10,20)

DrawingCanvas.SnapshotBlueAt(10,20)

DrawingCanvas.SnapshotAlphaAt(10,20)

While this works just fine for a single pixel, when I try to access all pixels of the snapshot it takes some serious time. Is there any way to do it through code?

You need to execute "DrawingCanvas Save snapshot" action, wait for it to complete, and then you can read pixels with expressions, for example:

DrawingCanvas.SnapshotRedAt(10,20)

DrawingCanvas.SnapshotGreenAt(10,20)

DrawingCanvas.SnapshotBlueAt(10,20)

DrawingCanvas.SnapshotAlphaAt(10,20)

Thank you so much for the answer! :D

While this works just fine for a single pixel, when I try to access all pixels of the snapshot it takes some serious time. Is there any way to do it through code?

Hello, I have a DrawingCanvas instance which I use to let the player draw on it. I would like to manipulate the individual pixels of the DrawingCanvas instance through code. How do I access these pixels? getImagePixelData() seems to return something but I don't know how to access an individual pixel on it. In the documentation it says that it resolves an ImageData object but the data property doesn't exist when I try to access it. :/

Thanks in advance for any help, this is really important to me. :D

Looks like there is a plugin here that will convert an image into a base64 string, where you can then run comparisons. See this thread for info and the link. https://www.construct.net/en/forum/construct-3/how-do-i-8/drawing-canvas-base64-string-141689

Thank you so much for all the help! :D

I am at the point where I've gotten the Canvas Snapshot but I don't know how to access the pixel information. I would like to compare the pixels, so if I find to access the pixels values I'm pretty much done. :D

Oh sorry I misunderstood what you were wanting. Are you doing a drawing game, where accuracy to the original is the goal?

Yeah exactly, I want to get the drawn pixels on the right half of the Canvas Snapshot and compare them to the pixels on the left.

https://www.construct.net/en/tutorials/saving-a-snapshot-381

Thank you so much. :D

However I would like to take the pixel data of the snapshot and manipulate them without saving them, if anyone knows of such a way please let me know. :D

Hello, I would like to compare the pixels similarity between two halves of the current frame for a game I'm making. Is there any way I could do that with construct?

take a look at this thread: in the middle of the second page it has a demo of how to draw a path and have an object follow it.

https://www.construct.net/en/forum/construct-3/general-discussion-7/collection-demo-projects-149701/page-2

Thank you so much for the answer. It really helped.

Now, are there any ideas on how I can compare the shape the player draws to a predefined shape I'm showing to him? I will work on this today and try to figure it out but any help, again, would be much appreciated. :D

Hello, I'm making a game where the player needs to draw a shape presented to him and I would like to know how to go on about it. any kind of help will be useful as I have literally no idea how to make this work. Thanks in advance. :D