[squeakland] Can a Morph / (etoys player) follow a connector path ?

[karl ramberg]

I made a version of this here
http://squeakland.org/showcase/project.jsp?id=11816

Click in the green playfields to create markers.

Start the plane with the Go button

Karl

On Fri, Mar 16, 2012 at 10:24 PM, Steve Thomas <sthomas1 at gosargon.com>wrote:

> Mike,
>
> No high level method I know of to track a connector. But there are many
> wonderful things inside Etoys which I have not yet discovered.
>
> So lets break down the game a bit.  You have to detect clicking on a
> particular plane (this can be done setting a script for each plane to
> execute on a mouse down event).
> Then you have to "draw a path to the target" and that path is not always a
> straight line.
> And you have to make sure the plane you clicked follows the path you drew
> for it, not another planes path (assuming you are making a multi-plane
> game).
>
> Well lets start simple with a single plane version.
>
> First let's assume only a plane and target.  When you click on the plane
> you can get a script to execute by setting the scripts "when to run" to
> "Mouse down" (in the script editor, click on normal and you will get a list
> of options).
> [image: Inline image 1]
>
> Now once you click on the script you would need to start "drawing the path"
> One way to do this would be to create a copy of a "marker" (pick any
> object you want to use as your marker) and have it follow your mouse
> movements.  For the script below I created my plane on the page of a book
> (I like doing this as I can duplicate pages for different versions as I
> play and explore).  The script below was started with the "mouse down" on
> the plane from the script above.
>
> [image: Inline image 2]
>
> Then when you click again you would want to stop the marker from following
> the mouse.
> [image: Inline image 3]
>
> Now of course you would need to create copies of these markers and keep
> track of them for each plane (a holder would be a good way to keep track of
> them). And to show the path you could use connectors connecting your plane
> to the markers.
>
> There are a number of more "advanced" Etoys features you would need to use
> but if you can play around with the above and want to go further, please
> send more questions to the list and we'll be glad to help.
>
> Stephen
>
> On Fri, Mar 16, 2012 at 1:09 PM, Mike Stramba <mikestramba at gmail.com>wrote:
>
>> I'd like to do something similar to this game in Squeak / Etoys
>>
>> http://www.gamenet.com/game/air-traffic-chief/
>>
>> I.e. using a connector, having the motion of a morph follow that
>> connector, as the connector is moved while the morph is moving.
>>
>> I see the demos in Etoys of   a "car following a road", but they seem
>> to be tracking a particular color, and continually turning left or
>> right (which is ya, basically what any path finding program is gonna
>> have to do internally, I guess).
>>
>> Wondering if there is a "high level"  / class  / etoys .. method etc,
>> to track a connector
>>
>> Mike
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>>
>
>
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