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tibasic

New TI Basic game demo: City Hunter

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Posted (edited)

I've been working on this game on and off for a few months and would like to finish it soon. The game attempts to use parallax to create some depth perception. I recently figured out what the gameplay will be so I am pretty sure I can finish the game now.

 

The idea is a rather common scenario where you have to rescue people from a city under attack from alien ships. There is a flying saucer that hovers above your ship and takes the odd pot shot at your ship. There is also an alien ship chasing you through the city that also tries its luck.

 

In this demo you can fly around and get an idea of how the alien ship fly around too. That's about it for now.

 

The file is for Classic99 and the keys are EXSD for up, down, left and right. H is to move into the screen (further away from the viewer) and B to move outwards.

cityhunter.gif

 

HUNTER2110.zip

Edited by tibasic
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I've uploaded a new version of the game (see the first post). The game is working and now has some shooting ships and scoring taking place.

 

The game isn't particularly fast but hopefully the complexity will be fun ...

 

The goal is to make 10 successful rescues. This is done by lining your ship up with an occupied window in the yellow building. Press space bar to attempt a rescue.

 

The saucer will home in on your location but there will be plenty of time to evade it by moving your ship closer or further away. The chase ship can be evaded by moving inwards and outwards or up or down. I guess you'll see how it all works when you play it. btw a rescue can only be made when you are near to the 'camera', i.e. the ship is big.

 

It is not finished yet although the next version could very well be the finished version.

 

 

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I managed to do a bit of work on the game over the last week. I haven't uploaded a new version as I mostly compacted some of the code and improved the visuals.

 

I did manage to add the ability to advance through different screens though. I think they'll be 5 levels all together of increasing difficulty and then either the game ends or perhaps the city starts getting slowly destroyed. That might be quite easy to do.

 

First I'd like to add some collision detection between the ship and the buildings which shouldn't take much code. Then if I have enough memory left I can add the other things.

 

Level1.jpg

Level2.jpg

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A quick update:

 

I've added code so now ships are lost if you collide with a building. A couple more things left to do then it'll be finished.

 

After this game is completed I'm planning to move towards writing more simple games like ones found in the 80s book, the Vince Apps Texas Program Book but utilising techniques I've developed for my longer programs.

 

I'm considering compiling a 'book' in electronic form, i.e. a pdf, of all my programs accompanied with a few notes about the different techniques that can be used for coding games in TI Basic. I'd also like to emulate the style and quality of the Vince Apps book in the pdf so it kind of looks like a book with a utilitarian outlook. I've already installed some dot-matrix style font and experimented with the look of the text.

 

The Vince App book can be found on the Internet Archive website if you want to take a look at this beauty. I'd call my book something like, 'Getting the most from the unexpanded TI99'.

 

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i don't know what i wrong but once the game started and i have this error. Just tried the file in the first post.

1.jpg

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Hi, not sure what is causing it, I'll look into it. Thanks.

 

Ok I think I've found it. I haven't initialised it properly. First try moving forward (press D) and then you should be ok.

Edited by tibasic

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