PeteE Posted December 25, 2018 Share Posted December 25, 2018 (edited) Here's my take on Turmoil from the 2600. I became interested when I realized how unfair it was that the 2600 has 64 colors vs 15 colors on the TI, and multicolor sprites too. But then I discovered an elegant way to do multicolor sprites in bitmap mode, and just had to see if it would be fast enough. The game is written in C, and compiled with GCC for the TI. I also used Tursi's Convert9918 program to generate the dithered colors on the rainbow screen. Gameplay requires Joystick 1. Press fire to start. Use joystick to move and press fire to shoot. Holding down the fire button while moving is an effective way to eliminate swaths of enemies. Collect the blinking prize before it explodes for 800 points, but get out of there quick when the saucer comes. Shoot the arrows before they turn into formidable tanks. An extra ship is awarded at the completion of each level. Sounds effects are in! Please download the game again. Source code is up on github turmoilc.bin turmoil.rpk turmoil.ea5 Edited May 6, 2022 by PeteE 25 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted December 25, 2018 Share Posted December 25, 2018 very nice! Quote Link to comment Share on other sites More sharing options...
Nick99 Posted December 25, 2018 Share Posted December 25, 2018 Amazing what can be done! This was fast and fun! With sound effects it will be a blast! Thanks PeteE! Quote Link to comment Share on other sites More sharing options...
twoodland Posted December 25, 2018 Share Posted December 25, 2018 Wow this is very cool! Thank you so much! Quote Link to comment Share on other sites More sharing options...
ti99iuc Posted December 25, 2018 Share Posted December 25, 2018 Oh my PeteE, it is a nice game! wow! Quote Link to comment Share on other sites More sharing options...
unhuman Posted December 26, 2018 Share Posted December 26, 2018 (edited) Damn that's pretty fantastic! I was starting to try and get my gcc platform set up again, but I can't top this. Edited December 26, 2018 by unhuman Quote Link to comment Share on other sites More sharing options...
PeteE Posted December 26, 2018 Author Share Posted December 26, 2018 Damn that's pretty fantastic! I was starting to try and get my gcc platform set up again, but I can't top this. Yeah, I saw that you had found your source code again. I really didn't want to step on your toes. But please continue to work on getting your C development set up again. I can post my source code and makefile if that would be helpful. 2 Quote Link to comment Share on other sites More sharing options...
+Vorticon Posted December 26, 2018 Share Posted December 26, 2018 You managed to re-create the feel of the 2600 pretty well. Nicely done! It does need sound however to make the experience whole and hopefully you can squeeze it in. 2 Quote Link to comment Share on other sites More sharing options...
unhuman Posted December 26, 2018 Share Posted December 26, 2018 Yeah, I saw that you had found your source code again. I really didn't want to step on your toes. But please continue to work on getting your C development set up again. I can post my source code and makefile if that would be helpful. No harm / no foul at all. I've neglected this thing for 9 years... But, I was super-happy to get my source code, it inspired me to put a bunch of old stuff up on github for "eternal" preservation. I'm very excited about your efforts! I've got other neglected projects too... 1 Quote Link to comment Share on other sites More sharing options...
PeteE Posted December 26, 2018 Author Share Posted December 26, 2018 You managed to re-create the feel of the 2600 pretty well. Nicely done! It does need sound however to make the experience whole and hopefully you can squeeze it in. Amazing what can be done! This was fast and fun! With sound effects it will be a blast! Thanks PeteE! Sounds effects are added! I hope your ears can tolerate them. 1 Quote Link to comment Share on other sites More sharing options...
PeteE Posted December 27, 2018 Author Share Posted December 27, 2018 I've added an EA5 version now - TURMOIL.bin. In case you were wondering how the multicolor sprites work, here's how: There are 4 different color stripe patterns used for the various moving object types: the player ship, the majority of enemy ships, the arrow/saucer, and the explosion. The color stripes are a block of bitmap mode character patterns, with a single sprite set to the inverted shape of the ship and set to black. Here's what it looks like with the sprite layer turned off in classic99: Each stripe block can be moved pixel-by-pixel horizontally by using the characters from a set of 8 shifted stripes with black background. There is one set for each corner of the block, so 32 characters total for each color stripe. The character pattern table looks like this: (the stripes are duplicated in each of the 3 bitmap mode screen segments) The player bullets are two sprites, and with one enemy sprite per row, and a single player ship sprite, that stays within the limit of 4 sprites per line. 11 Quote Link to comment Share on other sites More sharing options...
Opry99er Posted December 27, 2018 Share Posted December 27, 2018 Hell yes!!! Quote Link to comment Share on other sites More sharing options...
PeteE Posted December 27, 2018 Author Share Posted December 27, 2018 I found a bug on level 6 and uploaded the files again. I also changed the extension on the EA#5 version so it won't get confused for a cart. Hell yes!!! I'm excited to hear what BuckoBrand thinks of it. Quote Link to comment Share on other sites More sharing options...
Opry99er Posted December 27, 2018 Share Posted December 27, 2018 (edited) He will be extremely excited, I guarantee you that. He hasn't been on his laptop for a few days.... mom caught him googling one of the more hilarious body parts (innocently) and took away his internet privileges for a few days. He can TI in his room, but no internet for a bit. You never know what googling "big butt" will pull up. I told him it's funny to joke about, but that's not what we use the internet for. He understands and is chomping at the bit to get back online. Edited December 27, 2018 by Opry99er 3 Quote Link to comment Share on other sites More sharing options...
jrhodes Posted December 27, 2018 Share Posted December 27, 2018 As if i needed yet another excuse to power up my TI. PeteE, this rocks. Quote Link to comment Share on other sites More sharing options...
Keatah Posted December 27, 2018 Share Posted December 27, 2018 Color me impressed by the smooth and fast scrolling, and colors too. Quote Link to comment Share on other sites More sharing options...
sometimes99er Posted December 27, 2018 Share Posted December 27, 2018 (edited) This 2600 game was on my todo. But then I discovered an elegant way to do multicolor sprites in bitmap mode, and just had to see if it would be fast enough. I was going for multicolored sprites too, but then only using background graphics. Playability. I never got addicted, but it sure looks slick and fast pace. I had the game for the C64. And I've tried the 2600 version a few times. Generally just playing one or two minutes. Since the interest in May 2018, I took a closer look, since it's a perfect 8K candidate. Edited January 24, 2019 by sometimes99er 3 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted December 27, 2018 Share Posted December 27, 2018 Cartridges that run within the 8K cartridge space are always welcome. I regularly get folks asking me for homebrew cartridge games they can play without any expansions. . .there are still a lot of TI users out there with console-only systems, and these new games are a very good way to draw them back to the system. 4 Quote Link to comment Share on other sites More sharing options...
+Vorticon Posted December 29, 2018 Share Posted December 29, 2018 Love the sound effects! Makes all the difference! Quote Link to comment Share on other sites More sharing options...
Opry99er Posted December 31, 2018 Share Posted December 31, 2018 Unreal, brother.... just getting around to putting this one on my hardware and I am absolutely blown away. The controls are immaculate, the enemies are excellent, sound FX are marvelous.... You just did something incredible.... Thank you so much for this game!!!!!!! High Score Competition fodder, indeed!!! 3 Quote Link to comment Share on other sites More sharing options...
PeteE Posted December 31, 2018 Author Share Posted December 31, 2018 Unreal, brother.... just getting around to putting this one on my hardware and I am absolutely blown away. The controls are immaculate, the enemies are excellent, sound FX are marvelous.... You just did something incredible.... Thank you so much for this game!!!!!!! High Score Competition fodder, indeed!!! Thanks for your kind words. I hope you all have a lot of fun playing it. Quote Link to comment Share on other sites More sharing options...
eebuckeye Posted December 31, 2018 Share Posted December 31, 2018 I am amazed how good this looks! I was hoping the TI could do it after playing the Vic-20 version years ago.. Now, how do I get it to start in JS99? :-) I see the demo mode but can't figure out how to play. Quote Link to comment Share on other sites More sharing options...
PeteE Posted December 31, 2018 Author Share Posted December 31, 2018 I am amazed how good this looks! I was hoping the TI could do it after playing the Vic-20 version years ago.. Now, how do I get it to start in JS99? :-) I see the demo mode but can't figure out how to play. Press the fire button on joystick 1, which JS99er maps to the keyboard TAB key. Don't ask me how to play it on your phone. 1 Quote Link to comment Share on other sites More sharing options...
eebuckeye Posted December 31, 2018 Share Posted December 31, 2018 Thank you.. Never thought to try 'tab'. Awesome!! Quote Link to comment Share on other sites More sharing options...
PeteE Posted December 31, 2018 Author Share Posted December 31, 2018 (edited) Ksarul and ILikeTurtles have kindly provided a cartridge label here. Edited December 31, 2018 by PeteE Quote Link to comment Share on other sites More sharing options...
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