[Coco] Mary's arcade game nearing release

[Bob Devries]

Roger Taylor said:
> I'll need somebody to test this game on a real CoCo 3 in a few days.

Roger, I'm willing to test it on my 50Hz PAL coco3.

--
Regards, Bob Devries, Dalby, Queensland, Australia

Isaiah 50:4 The sovereign Lord has given me
the capacity to be his spokesman,
so that I know how to help the weary.

website: http://www.home.gil.com.au/~bdevasl
my blog: http://bdevries.invigorated.org/

----- Original Message ----- 
From: "Roger Taylor" <operator at coco3.com>
To: "cocolist for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Sunday, January 06, 2008 4:41 PM
Subject: [Coco] Mary's arcade game nearing release


> With several days of dealing with collision detection problems after 
> altering some code, I finally got it right tonight and the critter sprites 
> are now reacting as they should when Mary's character touches them.
>
> An extra VSYNC has to be used in the screen updates or the game would be 
> too fast.  Now it runs at the ideal smooth and constant framerate.  Keep 
> in mind that this game uses NO page flipping.  A single screen is used and 
> all sprites are erased, moved, and replotted at the right time to 
> eliminate flicker.  Special methods are used to minimize time-wasting 
> opcodes in between the erasing and replotting.  I could probably add a lot 
> more sprites to the game and have it work well, but I'l save that for my 
> next idea.  Even the tree graphics are plotted on each frame (without 
> erasing them first).  So, two VSYNCs are used to plot two groups of 
> sprites, then a third VSYNC to slow the rate down to be just right.
>
> I'll need somebody to test this game on a real CoCo 3 in a few days.  That 
> version will have the tester's name encrypted in the code and displayed in 
> the title screen.  The purpose of this test is mainly to see if there is 
> any flicker on the real hardware.  With the way I have set the game to 
> SYNC with the rising edge of the 60hz flag, it should be fine, but I want 
> to make sure.
>
> I may be able to sneak in a few extra features before releasing the game, 
> but it depends on what they are.  Sling an idea my way and we'll see, but 
> I want to get this game DONE now.
>
> Also... the Super CoCo Archive DVD orders are still being processed after 
> several weeks of a delay due to my job robbing me of at least 12 hours a 
> day and depriving me of any sleep over 3 hours a night during the UPS 
> Xmas/New Years season.  Bad weather up North caused major problems with 
> backflow at our center down South and this reflected in a major way on my 
> web site duties.  Things are calm now and I'm putting in some hours at the 
> keyboard and DVD burner.
>
> If you ordered a DVD, I know about it and yours will be delivered in turn, 
> and a groups of DVDs will go out each day until I complete the orders.
>
> If you need to ask a question about any of this, please write me privately 
> at operator at coco3.com and I'll try to estimate your delivery date.
>
> Thanks, and Happy CoCoing.
>
>
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