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urborg

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    An interesting Speed Comparison

    in Atari 8-Bit Computers

    Posted

    Remember that if you change interpreter Atari Basic to Turbo Basic you have to also change style of programming. Only then you make your program run much faster. Try to eliminate as many GOTO instructions as possible and replace it with TB stuctures (WHILE, DO, LOOP etc) in places when you use GOTO instead number of lines use etiquettes.

    Diablo-look a like possible on A8?

    in Atari 8-Bit Computers

    Posted · Edited by urborg

    Bingo :!: I tried out the folowing situations

     

    Look at this screenshot:

    post-5979-1162318861_thumb.png

    One step right and... two weapons appears into inventory

     

    In this situation also everything works fine

    post-5979-1162318867_thumb.png

    One step up and 2 items fall into inventory

     

    But in this situation:

    post-5979-1162318544_thumb.png

    One step up and i found only gold :!:

     

    The same here after moving right:

    post-5979-1162318557_thumb.png

    only gold is picked up, weapon dissapeard

     

    But here, after steping up I found only weapon, gold is lost

    post-5979-1162319532_thumb.png

    Diablo-look a like possible on A8?

    in Atari 8-Bit Computers

    Posted

    I tested it and there are some bugs. Sometimes after picking up a weapon it doesn't appear in the inventory. And I think that's why not always there is possible to pick up 16 weapons. Usually I was able to pick up 15-11 in tests I perform. I also notice that when I am collecting weapons on the screen (not pick it up) then my first weapon disapear from inventory. I performed a test. See screenshot

    post-5979-1162315694_thumb.png.

    There is 12 item on the screen. I also have "large axe" in the inventory

    post-5979-1162315702_thumb.png

     

    Then I killed few more monsters and there were 15 weapons on the screen

    post-5979-1162315713_thumb.png

     

    After looking into inventory I noticed that primary wepon disappear

     

    post-5979-1162315720_thumb.png

     

    And than after picking up all 15 weapons (I pick up all and then look into inventory) I noticed that I hae 13 weapons

     

    post-5979-1162316502_thumb.png

     

    This situation shown on the third screenshot I have saved in save state. After reading this save state in emulator again and collecting all weapons once again result in collected weapons were different each time.

     

     

     

    About magic items - I only once found a magic item. I think that probability of finding a magic item is something around 1% or less.

    Diablo-look a like possible on A8?

    in Atari 8-Bit Computers

    Posted

    I found a small bug. I played cheted version on emulator. When I start to play I have 30 Strength. After killing a few monsters I gained a level, and when I am starting to increase strength I get value "37" instead "31" when I continue increasing STR I get 32, 33... etc. I tried to increase strength only once to keep STR=37, but when I changed DEX or VIT it changed to 31.

    When I start to increase DEX or VIT at first, changed parameter is increased proparly, but STR goes to 36 and than return to 30.

     

    This situation occurs only when I gain level for first time.

    Diablo-look a like possible on A8?

    in Atari 8-Bit Computers

    Posted

    ok. bug found...seems some memory overflow...

     

    check out this one... this should work...

     

    ... strange... uploading new ATR while listening to Death's baptised in blood... ;)

     

     

    I have tested the latest version "7m" and that is what i think is wrong:

     

    1. Places where monsters/items are generated. Sometimes Monster is generated in place that is invisible - on the left side of the screen. When you go there monster come out of the left border and starting to chase you. Once the sword have been generated so near the right border of the scereen that I was unable to pick it up.

     

    2. When there are few unpicked items on the screen. When I started to pick it up all items are the same.

     

    3. After gaining a level effect of the item currently owned is deleted. For example I have "short sword of the stars" wchich give me bonus to strength, so I have STR=61, after gaining a level my strenght are downgraded to 30.

    Klony - brand new game for Atari XL/XE

    in Atari 8-Bit Computers

    Posted · Edited by urborg

    Hello

     

    There is new game "Klony" available for Atari XL/XE :) . Game come from Poland and it is port of well known logical game for coin up machines called "Ataxx". Game has a great graphics in hi-res and nice music. Levels wchich appers in random order and progressive level of difficulty make it really fun playing. I really recommend this piece of software :D

     

    Download Klony

    post-5979-1155274688_thumb.png

    post-5979-1155274695_thumb.png

    post-5979-1155274700_thumb.png

    Atari800WinPlus 4.1 (2.0.2)

    in Atari 8-Bit Computers

    Posted · Edited by urborg

    Here are images from game "Ninja" using no filter, filter smooth and Hiend filter. It is taken using laoo palette. In normal mode (which I prefer) you can count pixels :) . In smooth image is not sharp, like using very old TV set. Personally I don't like it, longer playing is tiring fo eyes. With the third metod picture is ... weird. Smooth as in hi-res. Just take a look at the mountains. The stars (shurikens) are now so smooth that becomes almost squares. The Ninja sword becomes now a solid line, as in original we can see that it consist of three pixels. Fonts also get non-Atari looks, like vector fonts. Image is generally sharp, but not always. As we can see Ninja is unsharp, and edges are even more blured than in smooth mode. Probably it is caused by the fact that colors of the bacground (dark grey) is similar to Ninja color (black). Changing palette to brighter and more contrastive (for example Default palette) eliminate this fault.

     

    About the speed. I tested it on Pentium 4 processor at 2,4 GHz with integrated graphic chip (Intel). This machine has enough power to draw this mode. I think some slower computers should also handle it. I run it on full speed of emulation and I get following speeds:

    770% for Normal mode

    710% for smooth mode (only a little slower, less then 10 %)

    240% for Hiend mode (about 3 times slower than smooth)

     

     

     

    imagenormal4yp.png

     

    imagesmooth8hf.png

     

    imagehiend0wf.png

    Shit Alpin 2005 ;)

    in Atari 8-Bit Computers

    Posted

    Hm, the final version does definitely work on my real Atari, just tested it...

    ShitAlpin 2005 (final)

     

    Good work, it could be very nice game to play, but for now it is practicly unplayable and has many bugs and crashes from time to time. But it could be very nice game with some chnges and improvements. I think that the game is too hard, and some gates are practically impossible to reach.

    Atari 8bit graphics rules

    in Atari 8-Bit Computers

    Posted · Edited by urborg

    You doing wrong because you take maximum Atari resolution available and whole atari palette, but you can't use it all in 8-bit Atari. There is no such graphic mode available there. Most popular mode was 160x192 in 4 colours. If you use this mode you will get something similar to those two images. First is made using dithering method of decreasing number of colours and the second is using nearest colour method.

     

    bunny4d9og.png bunny4n8bh.png

     

    But if You use G2F you can get fifth colour by converting graphic to chars. So You can something like that:

     

    bunny57kk.png bunny5n2ly.png

     

    Then there is possibility to enchance this image even more using some tricks. For example changing colours in each scanline (with limitations of 4 or 5 colour per scan line) using interrupts or adding more colours by using sprites. G2F allow you to do this all things, but it is not that simple as it sounds.

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