Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 So, basically, Imagine your tilemap in our case like this: A grid of 40*12 4*16 tiles. Each tile has 13 colors. (12 plus background) We "Scroll" by moving the tilemap. New tiles are revealed as we scroll, and old tiles are deleted. Quote Link to comment Share on other sites More sharing options...
Traxx Posted August 13, 2022 Share Posted August 13, 2022 I get the concept,I need to code it to make sure I understand 100% Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 1 minute ago, Traxx said: I need to read up on the modes,thank you for going into detail, lot's of help Well, If you want, we can use 320C (The best 320 mode) for our game. We also get 320A (C64 hires basically) mode too. Atari allows 2 modes to be on-screen at once. You can have: 160A and 160B <-- best for color, low res 320A and 320C <-- best for 320 color, worst for fine color detail 320B and 320D <-- worst 320 modes for color, best for detail Now, for the confusing part. 320C and 320D. 320C is very powerful. Imagine each row of pixels and group them into pairs. Each 2 pixels can have 1 of four colors. Pixels are on or off. (So, if a row is 8 pixels wide, we get 4 "Sections", each section can have one of 4 colors) 320D is practically garbage. You get 2 palletes of 2 colors. You can either have both even and odd rows be the same color, or different colors. It's really terrible. =( 1 Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 (edited) 6 minutes ago, Traxx said: I get the concept,I need to code it to make sure I understand 100% Give me a tilemap of tiles. Each tile can have 13 colors and tiles are 4*16. Then I can give you the code. (Like, show me a grid of tiles you want to see, then I'll make it for you) Ex: Edited August 13, 2022 by Ecernosoft Quote Link to comment Share on other sites More sharing options...
Traxx Posted August 13, 2022 Share Posted August 13, 2022 I'll look into these modes,320c seems useful Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 (edited) So, in 320C you can do something like this: * notice how each 2 pixels share a color. (Zoom in for more detail) I think we should use 160B, it has the most colors. Think SMS. Edited August 13, 2022 by Ecernosoft Quote Link to comment Share on other sites More sharing options...
Traxx Posted August 13, 2022 Share Posted August 13, 2022 I appreciate that,I do know how to scroll and draw from 2*2,4*4 tile maps,I also know how to compress maps..I've programmed games before. Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 So, we get 2 palletes of 4 colors. What's nice about 320 modes is that you can do fine detail but be warned: The 7800 produces artifacts. It's why I don't think we should use 320C on our game, because it will look worse on real hardware if it's not S-video or higher quality. Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 1 minute ago, Traxx said: I appreciate that,I do know how to scroll and draw from 2*2,4*4 tile maps,I also know how to compress maps..I've programmed games before. I've made a map compression system; Basically, what tile to draw, repeat it N times down the screen. When you reach bottom, stop untill time to draw next column. OR- Decompress map into buffer- load buffer into tilemap as needed. Quote Link to comment Share on other sites More sharing options...
Traxx Posted August 13, 2022 Share Posted August 13, 2022 (edited) Gotcha,I use buffers in master system programming and also amiga.I mention this because I'm not new to game programming. Edited August 13, 2022 by Traxx Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 I'd recommend downloading Tiled to make your tilemaps, you can make a tilemap and save the whole thing to .png, then load it into tiled and boom. Download | Tiled (mapeditor.org) Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 Just now, Traxx said: Gotcha,I use buffers in master system programming and also amiga. So, think of a buffer as a GIANT TILEMAP. Like, HUUUUUGGGGGEEEE. We can only see a small portion of the tilemap on the screen, and we scroll-around to reveal other parts of the tilemap. Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 Also, when I said 256*16, I meant 512*16 of 4*16 tiles. Quote Link to comment Share on other sites More sharing options...
Traxx Posted August 13, 2022 Share Posted August 13, 2022 1 hour ago, Ecernosoft said: I'd recommend downloading Tiled to make your tilemaps, you can make a tilemap and save the whole thing to .png, then load it into tiled and boom. Download | Tiled (mapeditor.org) I use it for Genesis and TurboGrafx programming and Windows SDL Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 Of our 16KB extra RAM, we can use 4K to make a tilemap. then 4k is left for general use. We'll probably use a mapper so we can get 128KB ROM and a POKEY for the music. POKEY is very powerful. Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 Just now, Traxx said: I use it for Genesis and TurboGrafx programming and Windows SDL Genesis? TG16? Wow! Can I see what you've made? (Screen shot by Windows key + Shift + S) Quote Link to comment Share on other sites More sharing options...
Traxx Posted August 13, 2022 Share Posted August 13, 2022 Can I show in pm if that is ok,I'd like to keep 7800 programming info directed at 7800 Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 What is "PM"? I know I sound stupid, I'm sort of new to Atariage. 1 Quote Link to comment Share on other sites More sharing options...
Traxx Posted August 13, 2022 Share Posted August 13, 2022 Private message Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 Ok, Should've figured it out by then, lol. 😅 1 Quote Link to comment Share on other sites More sharing options...
Traxx Posted August 13, 2022 Share Posted August 13, 2022 We should get on discord sometime Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 Anyway, does this Pixel-art dude have an Atariage account? Would make communication much easier. Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 Just now, Traxx said: We should get on discord sometime I don't have a discord account. Easier on Atariage, if it's better on DS then I can move to DS, but it wouldn't be immediate. Quote Link to comment Share on other sites More sharing options...
Ecernosoft Posted August 13, 2022 Author Share Posted August 13, 2022 Anyway, if you have a level and you want me to compress it, I can certanately do that. Quote Link to comment Share on other sites More sharing options...
Traxx Posted August 13, 2022 Share Posted August 13, 2022 (edited) He dosen't,but he is active on c64 discord as many artists are,you'll have to make that initial jump.Plenty of very nice and helpful members here can get you started on discord. Edited August 13, 2022 by Traxx Quote Link to comment Share on other sites More sharing options...
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