DrawImage issue ...
Monkey Forums/Monkey Programming/DrawImage issue ...
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Hi! I've just invested in Monkey and am loving it so far :) I have a slightly embarrassing issue that I can't figure out at the moment. I'm trying to load in a display an image. From what I can tell this piece of code I've written is correct but it just complains when I try to run it. I've tested this on my Mac and PC with the same problem, so it's seems I'm messing up somewhere. The error I get is this: Monkey Runtime Error : TypeError: bb_graphics_device is null /Users/<username>/MonkeyCoder/modules/mojo/graphics.monkey<238> If anyone could shed any light on this for me that would be excellent :) Thanks Mike Here's my code: Import mojo Import mojo.app Import mojo.graphics Class MyApp Extends App Global Picture:Image = LoadImage ("TestImage.png") Method OnCreate:Int() SetUpdateRate 60 End Method OnUpdate() End Method OnRender() DrawImage (Picture,MouseX,MouseY) End End Function Main() New MyApp End |
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You have to load your image in the OnCreate, you can't do it when you set your variable there? |
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Hi Mike, welcome aboard! In your code the image is loaded before the App object is initialized. You can't do any graphics stuff before. So caffeinekid is right, it belongs in OnCreate. |
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the image should be a Field in Class not Global |
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Hi again! Thanks everyone for your help! :D all the best! Mike :) |
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the image should be a Field in Class not Global Not necessarily. I use global images within classes all the time. |