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# Iso Tiles

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This is what a iso tile should look like isn''t it? 000011110000 001100001100 110000000011 110000000011 001100001100 000011110000 but how to put them together? I have such a routine: DrawX = IndexX * TILE_WIDTH + (IndexY & 1) * TILE_WIDTH / 2; DrawY = IndexY * (TILE_HEIGHT / 2 + 1); This is how I learned it and how you can put them next to each other without overlapping lines. But I have a problem with this, because with this way you can''t make textured tiles connect correctly because they shift in the Y direction. The middles of the tile sides don''t connect correctly. So instead of two straight diagonal lines in the map you get a stepped look. I hope I explained it good enough, if I don''t just tell me and I''ll try again... (and I''ll add some more later, because I found a solution, but that gives me some more problems...) Mox

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you''re close. there are actually a number of ways to do an isometric tile, but the way i''ve found that looks the best is as follows:

000000XXXX000000
0000XXXXXXXX0000
00XXXXXXXXXXXX00
XXXXXXXXXXXXXXXX
00XXXXXXXXXXXX00
0000XXXXXXXX0000
000000XXXX000000
0000000000000000

you can plot them in several ways. the three most common:

worldx=tilex*TILEWIDTH
worldy=tiley*(TILEHEIGHT/2)

worldx=tilex*TILEWIDTH+(tiley & 1)*(TILEWIDTH/2)
worldy=tiley*(TILEHEIGHT/2)

worldx=(tilex-tiley)*(TILEWIDTH/2)
worldy=(tilex+tiley)*(TILEHEIGHT/2)

each gives a different effect.

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I''ve tried a lot of diffirent tiles now and I think I finally have a good one. I use the algorith I posted before and think the tiles connect perfectly now...

0000001100000000
0000111111000000
0011111111110000
1111111111111100
1111111111111100
0011111111110000
0000111111000000
0000001100000000

This way the textures on the tiles also connect correctly

Mox

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If tiles are of the size N by N/2-1 then you can use:

Xdraw = (Xindex-Yindex)*TileWidth
Ydraw = (Xindex+Yindex)*TileWidth/2

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That's more of a top-down tile, Mox. For an easy and realistic 3D effect, tiles should be wider than they are tall, otherwise you end up with a mock-3D look, like the original SimCity (which is now available on Palm, I see).

I might be wrong, however.

PS.
Palm SimCity - http://www.ateliersoftware.com/palm/scc.html. Surprisingly attractive.

Edited by - Mayrel on October 22, 2001 3:11:56 PM

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