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DarkBASIC Professional Discussion / Trying to do a 2D tiling engine...........

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HZence
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Posted: 10th Jul 2003 07:45
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And I'm quite new at it. Asking for a little help.......

I have a text file that reads:

1121111111111111
1111111111111111
1111111211111111
1111111111111111
1111111111121111
1111111111111111
1111111111111111
1111111111111111
1121111111111111
1111111111121111
1111111111111111
1111111111111111

Each digit (obviously) represents a certain tile. My question is, how would I read each digit individually? Starting At position 0,0, then 1,0, then 2,0, then 3,0, etc. Thanks for the help...
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Kanzure
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Posted: 10th Jul 2003 08:05 Edited at: 10th Jul 2003 08:07
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I would suggest NOT doing it like that. Use arrays. I have to go right now, I'll post more latah.


[EDIT]
Er, its later :p..

Okay, what you do is for File #1.



And for file 2...(your game)



There ye go!

~Morph/Kanzure
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HZence
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Posted: 10th Jul 2003 08:06
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Then how the heck should I do it?!!!!?!?!?!?! lol

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Kanzure
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Posted: 10th Jul 2003 08:08 Edited at: 10th Jul 2003 08:09
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Um..read the post..I edited it :p!

My method is better because you can have more then 9 tiles! You can have all the way up to 32 digit numbers I believe, but why the heck would you need that? Lol...

~Morph/Kanzure
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HZence
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Posted: 10th Jul 2003 08:16
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What's "tile crap"? lol

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HZence
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Posted: 10th Jul 2003 08:18
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How do i read from the array??????

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HZence
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Posted: 10th Jul 2003 08:32
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Okay, screw that since it's not working at all. Alright, ALL i wanna know now is how to read a text document character by character - any help please? thanks

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HZence
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Posted: 10th Jul 2003 09:36
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Question has changed yet again. I have down reading the lines, but I'm using "read byte" and it will only read the first line of the map and not any lines after that. Suggestions?

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HZence
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Posted: 10th Jul 2003 10:00
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Gargh. Nevermind, father time fixed it

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Falelorn
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Posted: 10th Jul 2003 10:18
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Im interested on how you did that.

Can we see some screen shots to?
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haXor
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Posted: 11th Jul 2003 02:52
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wow that must be a record of most posts talking to ones self in a row...

Sup Kids
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HZence
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Posted: 11th Jul 2003 05:55
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lol yes...thanks to me for the help. but the reason i kept changing it is because i was posting at around 1 in the morning.

alright, here's how I did it.

Okay, basically right now, I only have about ten tiles. (My friend has been doing them in photoshop...once we have the basic engine done we're gonna make a game (yay)). Anyway, basically all you do is create a text document and type your level using numbers (eventually letters, and all sorts of characters too). You use this template:

1111111111111111
1111111111111111
1111111111111111
1111111111111111
1111111111111111
1111111111111111
1111111111111111
1111111111111111
1111111111111111
1111111111111111
1111111111111111
1111111111111111

The map is 16x12 at a size 40x40 pixels per tile, if you do the math, that's 640x480 resolution. The catch is, once your done typing out the map like that, you have to put it all on one line (that's the way the engine reads it: a single line.) So the above would become:

111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111

Here's the engine...which is far from complete:

Sync On : Sync Rate 0
Set Display Mode 640, 480, 32

TileX = 0
TileY = 0
Images = 1

Load Image "Tiles\01.JPG", 1 : ` Rock
Load Image "Tiles\02.JPG", 2 : ` Water
Load Image "Tiles\03.JPG", 3 : ` Dead Grass
Load Image "Tiles\04.JPG", 4 : ` Dirt
Load Image "Tiles\05.JPG", 5 : ` Grass
Load Image "Tiles\06.JPG", 6 : ` Tree/grass
Load Image "Tiles\07.JPG", 7 : ` Tree/dead grass
Load Image "Tiles\08.JPG", 8 : ` Tree/dirt
Load Image "Tiles\09.JPG", 9 : ` Mini-stone path

Open To Read 1, "Levels\Stoneroad.TXT"

For I = 1 To 192
Read Byte 1, a
a = a - 48
Paste Image a, tilex, tiley
tilex = tilex+ 40
If TileX = 640 Then TileY = TileY + 40 : TileX = 0
Next I

Do
If ReturnKey() = 1 Then End
Sync
Loop

Lines 20-26 are the key to the engine - well, right now. Like I said, it's NOT done (it doesn't even scroll yet!). As you can see, there is a loop I that goes to 192. How did I get that? 16*12=192...simple. When you put the map on one line, it just reads up to 192 characters. Each number has a certain byte value. For example, 1 has a bv of 49. 2 has a bv of 50, etc. So what I did was read the byte value, and subtract 48 from it. That value is written to a. The proper image is then pasted as a tile according to the value of a. Then the x value of the tile is incremented. Once it gets past 640, it resets to 0 and the y value moves down 40 (telling the engine that otherwise, we'd be tiling off the screen).

Maybe that's more complicated than a lot of engines, but the point is, it's the first tiling engine i've ever successfully done like that (reading from a map file), and I did it myself! Yay! I'm a big boy now! Lol.

Well peace and thanks for listening to me rant....comments welcome

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JesterDev
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Posted: 11th Jul 2003 07:06
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Thanks for sharing. I was looking for a way to do this exact thing. But didnt even have a clue as to how it was done.

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The Darthster
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Posted: 11th Jul 2003 13:18
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Here's how my tile scrolling engine works:

The data is read from a massive data array, this is currently
hardcoded, but could work from a file if the file was fed into the
array.



Movement controls, including scrolling, but there's no collision as
yet.



And sprite all the tiles to the screen! (Images 100+, 32x32)



If you're having any trouble with the scrolling, feel free to use my
code, but give me all the credit! Muhahahaa! (j/k)

Once I was but the learner,
now, I am the Master.
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Karlos
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Posted: 11th Jul 2003 17:53
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just as a side note - when the read byte reaches the end of a line in a text file it will pick 1 or characters which represent the return key being pressed. It depends on which system you used to edit the file.
i.e there would have been 17 or 18 characters per line on your original text file.

If it ain't broke - try harder.
W2K Pro - Geforce2 MX400 64MB - Athlon 900
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Fallout
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Posted: 12th Jul 2003 00:56
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I think the best way is with DATA statements. They're very underrated.

Convert your txt file to this:

DATA 1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1
DATA 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
DATA 1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1
DATA 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
etc. etc.

Better still, when you design your map, design it in that format and then all you'll have to do is paste it into your code (or #Include it).

Then all you need to do is define your array:
Dim MapTile(width,height) as integer

Then just do a few loops to read it into the array:
for y=1 to height
for x=1 to width
read MapTile(x,y)
next x
next y

Thats it. All the info in the array, nice and simple.

Machine: P4 2200, 1GB RAM, GeForce4 64MB, Audigy Platinum
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(It's not all about the coding)
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HZence
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Posted: 12th Jul 2003 06:46
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The reason I don't use the data statement is because it's not as customizable. I can just have a file that says "Hey, here's the minimum amount of maps, and here's the maximum." and then my program can just read the amount of maps, load that many, and use them the way the map tells the program to do it. Still, the data idea works well.

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HZence
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Posted: 12th Jul 2003 06:49
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By the way, I think I'm gonna do a windows based map editor in VB...I already have some base-algorithims formulating in this little head of mine. lol.

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shwuckie
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Posted: 14th Jul 2003 17:38 Edited at: 14th Jul 2003 17:52
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http://www.geocities.com/shwuckie/PxP.jpg

ok why am i linking to a jpg??? well its really a ZIP file, download that file (the easiest way to do that is to right click on the link and choose SAVE AS), change the extension to ZIP and extract the files. This is my Tile engine, it has 8 directional pixel scrolling, multilayered and animated maps.

enjoy!!

oh i suppose i should make a post too, in case nobody ever notices this reply lol

optic blast! megablast! have a blast!!
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