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@RonJeffries - been following your series on the development of both Asteroids and Space Invaders, both responsible for lost time in my ‘youth’. I am currently struggling to get anywhere near my old proficiency with your current generation (64), which I have put down to rheumatism, partial blindness, the control system (tilting) or the gradual dementia that seems to be taking over me. Then again - I looked at images of the the original (YouTube) and an image of your latest generation (64) and your alien rows seem to be a row lower - eyes again? Or just wishful thinking?
Images attached.
P.s. tried to email this to you from my folders but struggled to post anything!!! Hence the thread.
Comments
@RonJeffries I verified @Bri_G comment. In the original game, the bottom of the bottom row is approx 4 1/2 times the height of the shields from the bottom of the shields. In your game, the distance is approx 3 1/2 times the shield height. That’s based on the 2 images Bri-G posted.
@RonJeffries I scaled and overlayed the 2 images from @Bri_G to show the difference. See the image below.
good info. i thought i got that height from the original code. easy enough to move them up, i'll do that next update, thanks!
@RonJeffries thanks for the detailed series on developing and optimizing code, there is definitely more than three of us out there, so please keep up this engaging series. Although its the code and process that is most interesting - I'd be lying if I said I didn't enjoy the games. Were you aware that if you should be successful in destroying all the invaders, the screen just freezes with the last invader on screen and the missile about to hit it, no explosion, it just freezes.
didn't know that, but not surprised it does something weird, i've not dealt with killing the whole rack. maybe tomorrow. today i'm moving invaders up and centralizing constant, but can't publish until me new mac keyboard arrives.
i'm glad you find the articles and game amusing!
thanks!
@RonJeffries Played your latest invaders and noticed that when the invaders get to the bottom of the screen, they just pass thru the player. Shouldn’t they destroy the player. Otherwise, they just keep marching off the bottom of the screen and the game never ends. I just kept shooting the saucers racking up points until I just closed the game.
yes, feature not done yet. i think as soon as they bottom you die w/o being touched. need to do multi racks, too. inch by inch. the idea is to improve bit by bit.
@RonJeffries - just loaded your version 68 and it’s much more like the old days.
One thing - wanted to run in FULLSCREEN_NO_BUTTONS mode so tried the following code one Gamerunner tab:
This was intended to run in game mode as FULLSCREEN_NO_BUTTONS and switched to OVERLAY when you get down to zero lives, but - it started out with another game. Thought you might implement this when you finish (may need a new game button) your development (only a mod that does work - always risky trying to edit someone else’s code).
Thanks, I understand ...
@RonJeffries Read your latest article. Here’s a great circle calculation.
thanks ... that was in 1961, so your help's a bit late ...
@RonJeffries I always like something new to code. Any excuse is OK with me. I still have more to do with it. That was mostly just to make sure the calculations were correct.
Here the finished code for the great circle calculator.
thanks! nice little ui
@RonJeffries For info. seems like updated Codea 3.2.7 has broke your Space Invaders program. Suddenly there are no shields. This is the version from your article no. 79. The only thing that seems to have changed is the update of Codea ?
That's interesting. I can confirm that they are gone. Well spotted. I'll see if I can figure out what has happened.
No, appears that readImage is borked.