Hello . I'm trying to make a combat board for an RPG game that can be moved around and resized .

Since the board needs to be contained within a certain portion of the screen , i'm using a calculation with CanvasToLayerX to pin a sprite to a certain position . This sprite acts as a mask that stops the grid from getting out of it ( using the "source atop" effect ) .

In the pictures below , the grid is represented as the big red sprite .

In Firefox , Edge and NW , the mask pins to the exact position . However , in Chrome , the mask pins slighty more to the left for some reason . Here are some prints :

Edge

Firefox

NW

Chrome

The zoom % alters the scale of the layer .

Since the mask needs to be in the same layer as the grid for the effects to work , it means it is also affected by the scaling . For that , it's size compensates for the scale so it remains constant .

And for the position , i use these calculations :

(spr_combatbackground is the background window the mask is supposed to be contained in)

Why is this happening only on Chrome ?

Is there any better way to do what i am doing ?

Thanks in advance

I'm trying to acess all objects within a layer , and change their position .

It would be something like :

"For each object in layer : object.X = object.X -1"

I've been messing with effects and blend modes recently .

By adding the "source atop" blend mode on an object that is above another one , i get this result ( which is correct ) :

By adding the "source atop" on the layer that contains both objects (and setting the blend mode of both objects to normal) , i get this (nothing) :

My question is : Why changing the blend mode of the layer did nothing to the objects ? How do blend modes work specifically on layers ? I've searched online , but i didn't find any specific description of how blend modes work in layers .

Thanks in advance .

Is there any way i can check if a certain sprite has an origin point which has the same name as something else ? ( basically , compare the name of an origin point )

Ex :

- If Object Sprite has an origin point named "Test" :

return true

else

return false

end