Hi, I am new to gdevelop. I made a wheel of fortune, but i cannot understand how to use read pixels extension. I want to add condition where if there is a certain color under exact pixel then i update money of a player. I dont understand how to implement read pixels extension in my project
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Hi and welcome plur4ik.
That’s a good question as it’s not listed directly in the conditions or actions. The ways I’ve used it is to save the read pixel values where the cursor position is to a text object or a variable or to directly change the colour of another object to the one where the cursor is.
So, in the action to change a variable, you would click on the purple 123 button and use one of the readpixel expressions.
You don’t say how you plan to choose which pixel is read, but say it was at the cursor position, than you would have to compare the readpixel value to the one that increases money. From memory this can get tricky because the extension saves the colour into three separate RGB values.
Here is one way I’ve used the extension and you can see I had to join the RGB values together.
Have a play with it and see how you go and check back here if you need more help.
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Read pixel gets the red, green and blue values separately. You could add them together with semicolons and compare the value with the compare 2 strings condition.
Colors are defined as strings of red, green and blue values from 0 to 255 seperated by semicolons.
Purple is 255;0;255
This just rotates a text object for testing.
If you’re rotating a wheel, it might be easier to check the angle using a pair of conditions to check if the angle is within a range.
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