Adventure Game Studio

It appears that Changing the cursor graphic to a DynamicSprite causes a problem.

I first started with this:

mouse.ChangeModeGraphic(eModePointer, oMysub.Graphic);


Now, this does work. But since the graphic I'm using needs cropping, I cropped it using the DynamicSprite's Crop function and passed the resulting graphic as the one to use as the mouse pointer. The game compiled fine, but when I ran the function in question, the game quit with the following error:

Quote from: Error message.
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Illegal exception
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An exception 0xC0000005 occured in ACWIN.EXE at EIP = 0x00427E88 ; program pointer is +5, ACI version 2.72.918, gtags (0,0)

AGS cannot continue, this exception was fatal. Please note down the numbers above, remember what you were doing at the time and ... etc
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OKÃ,  Ã, 
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I played around with cropping the sprite more or less, until I discovered that even this wouldn't work at all (despite basically being the same as the above code)

DynamicSprite *my_sub_sprite = DynamicSprite.CreateFromExistingSprite(oMysub.Graphic);
Mouse.ChangeModeGraphic(eModePointer, my_sub_sprite.Graphic);


I tried it out with RC2a and still the same trouble. Hope this helps.

Quote from: Colxfile on Mon 26/06/2006 14:53:05

Code Select Expand


DynamicSprite *my_sub_sprite = DynamicSprite.CreateFromExistingSprite(oMysub.Graphic);
Mouse.ChangeModeGraphic(eModePointer, my_sub_sprite.Graphic);


I tried it out with RC2a and still the same trouble. Hope this helps.

Since this code was presumably inside a function, as soon as the function ended my_sub_sprite would have gone out of scope and thus been deleted... hence your error. All non-temporary dynamic sprites must be global variables decleared outside of any function.

That's the one! Thank you ;D

where are you declaring dynamic sprite to  make them global?

I tried out of a function in the beginning of global script and I get this error

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Compile Error
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There was an error compiling your script. The problem was:

In: 'Global script'



Error (line 31): cannot assign initial value to global pointer



Do you want to fix the script now? (Your game has not been saved).

Did you read the error message?
Do "DynamicSprite*ds;" outside any function, then assign something to it in game_start or whenever.

Thanks KhrisMUC
I have not understand the meaning of the error message but your answer make it clearer.
now it 's good :)

thanks again to you and every member who helps newbies with silly questions :)