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PostPosted: Wed Jan 29, 2014 2:57 pm 
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So, the Game Boy has this very interesting layer that the NES lacks. A lot of games use it for boring stuff like status bars and the like, but some of them were more creative about how to use the window. A while ago someone (forgot who) mentioned a Castlevania game which used the window to draw big spiked walls and other large moving objects. Do you guys know of other good examples of creative uses of the window layer, for effects that wouldn't ordinarily be possible in 8-bit consoles with a single background layer?


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PostPosted: Wed Jan 29, 2014 10:27 pm 
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Contra (Operation C in North America) I think is another one that uses the Window layer for a large platform, and possibly other large objects.


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PostPosted: Thu Jan 30, 2014 6:40 am 
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Good example, thanks.


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PostPosted: Sun Feb 02, 2014 3:27 am 
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http://www.youtube.com/watch?v=skzu3VL7_38

Chikyuu Kaihou Gun I think is a very interesting example in that it actually uses two background layers scrolling at different speeds.
The effect really shows in later levels I think.


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PostPosted: Sun Feb 02, 2014 7:28 am 
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Grumskiz wrote:
http://www.youtube.com/watch?v=skzu3VL7_38

Chikyuu Kaihou Gun I think is a very interesting example in that it actually uses two background layers scrolling at different speeds.
The effect really shows in later levels I think.
That game is using a bunch of interesting tricks, but as far as I can see nothing that is using the window, from a quick look at that video.
6:16 Scrolling "behind" the background by writing new tile data for some tiles.
8:33 Switching between between two BG maps every frame, and then lets the LCD lag take care of the frame blending.
11:32 This effect is done by changing the SCX and SCY coordinates and probably map source mid-frame. This effect actually CAN'T be done by the window because of its limitations. (The drawing must always start relative to position 0,0 of the selected map.)
23:38 This boss might be done using the window, but it could also probably be done with the background+sprites. The advantage of doing it that way is that you get hardware mirroring for free.


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PostPosted: Tue Feb 04, 2014 12:52 pm 
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Huh, interesting. I must admit that I never really looked at it closely. I just thought "that is using the window". Sorry, I guess i was wrong. Nonetheless I still think this game is very impressive!


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PostPosted: Tue Feb 04, 2014 1:15 pm 
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The game has interesting effects, yeah. Unfortunately, the transparent overlay trick isn't of any use in systems with faster displays than the original Game Boy's. In fact, this game probably flickers like hell in a GBA SP!


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