Performance with special effects - VERGE, Free 2d Game Engine

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Performance with special effects

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ErayMan	I am working on a battle system and it's almost complete, but all of it requires quite a heck of cpu (but is really nifty! :)) It's running fine on most computer so far, but this snippet of code makes even my 3800+ athlon 64 slows down quite a bit, and that's unnacceptable ;). Basically, I want a red outline around the monster (when it is berserk or whatever) that is glowing from red to black and forth LucentStatus == % that change back and forth for glowing effect (it's doing this at each showpage() ) ScaleBlit(-5, -5, ImageWidth(monsterImage) +10, ImageHeight(monsterImage) +10, monsterImage, ImageDest); Silhouette(0, 0, RGB(1,1,1), ImageDest, ImageDest); SetLucent(LucentStatus); Silhouette(0, 0, RGB(255,0,0), ImageDest, ImageDest); SetLucent(0); TBlit(0, 0, ImageDest, screen); It draws the monster a little bit bigger on top of the real monster, then silhouette-black it, then lucent-silhouette-red it, then redraw the original monster on top. When one monster is berserk, it's actually not too bad! But if I get, say, 4 of them at the same time, it really slows down and it's not the same anymore ;-( I've found that the Silhouettes takes 9/10 of the processing time. Is there another way I could do this? Or make it faster? I believe I could make 2 gifs of the same monster, one that is all black and a little bigger, so I'd save 1 ScaleBlit and 1 Silhouette, but that gets annoying when you have lots of mobs. Thanks! (hope to be ready to show a final product real soon! :) Only need status effect and animate player's sprites) - ErayMan Posted on 2007-01-05 01:34:15
IkimashoZ	Yes! I had this problem when trying to make comboed kanji fade between white and gold. Here's what I did (using your code) int BorderColor; ScaleBlit(-5, -5, ImageWidth(monsterImage) +10, ImageHeight(monsterImage) +10, monsterImage, ImageDest); BorderColor = mixcolor(rgb(0,0,0), rgb(255,0,0), (LucentStatus*255)/100); Silhouette(0, 0, BorderColor, ImageDest, ImageDest); TBlit(0, 0, ImageDest, screen); I wrote that on the fly, so I apologize if it doesn't compile. But yeah, you get the idea. Good luck with your project. I hope to see it when it's done. Posted on 2007-01-05 03:40:49
ErayMan	Oooh, mixcolor sure looks like it'll fit well in my engine hehe! Yep, that's one good idea, thanks for your help! Posted on 2007-01-05 16:40:49
Gayo	How heavily animated is this monster sprite? If it's not moving much you'd be much better off scaleblitting it once to buffer and then just silhouette-blitting that. Posted on 2007-01-05 17:06:50
ErayMan	Well, the monster is static, except for the glowing thing around it. But I'm not sure I understand. I mean, I scaleblit it, silhouette it, then blit original on top I think it's like you say hehe ;) Or is there something I fail to grasp? Posted on 2007-01-05 17:42:46
Beni	The first 2 lines can be done once at the beginning of each battle, so you don't need to do it every call to showpage. I think that's what Gayo was saying. It would be the same as you creating 2 gifs for each monster like you said, except you would be doing it on the fly with code instead of actually creating the files. Posted on 2007-01-05 19:06:54

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