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timfel / etoys-spur

A repository to track Etoys development, keep external sources, and build all-in-one bundles
MIT License
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Make it easier to create a new turtle #3

Open JensLincke opened 7 years ago

JensLincke commented 7 years ago

it is not clear how to create a new turtle...

the easiest was to paint directly on the world the turtle was moved...

JensLincke commented 7 years ago

Does one paint new turtles or does one paint patches?

timfel commented 7 years ago

You paint turtles. Patches are the "shared memory".

timfel commented 7 years ago

Patches have a value for each pixel. The value determines how "transparent" the patch is (higher value = less transparent). The patch can "diffuse" (meaning its value spreads out over the neighbouring pixels over time) and they can "evaporate" (meaning their value goes down over time).

timfel commented 7 years ago

patches cannot move, they have one value per pixel, and you cannot easily "move" that value. turtles can move and they can also carry variables, so to "send" data around with direction, you need to use turtles. to just "spread information" you can use patches.

JensLincke commented 7 years ago

So, the painted turtles should have the position you painted them...

timfel commented 7 years ago

yes, but there is a bug there, they move to the top left, if there is nothing in the topleft, because the painting is cropped before it is applied to kedama, i think.

timfel commented 7 years ago

i will make you a video

timfel commented 7 years ago

here is a video kedama-draw.zip

JensLincke commented 7 years ago

but when painting without an existing turtle... the turtles are all moved

https://www.dropbox.com/s/mlmn7q8mbzfwa4a/Squeak%21%20%28C__Users_Jens_Dropbox_bin_squeak_Etoys6.0beta-7605-32bit-r201606301459-Windows_Jens_Kedama_Baum_01.image%29%2019.08.2016%2014_03_05.mp4?dl=0