Turtle Challenge

[richmond62]

I have now expanded my stack to 2000 pixels wide to allow for all sorts of stuff.

(I apologise in advance to people who do not have socking great monitors).
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Screenshot 2024-07-03 at 11.52.51.jpg (282.01 KiB) Viewed 15983 times

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And I have made a button 'RESET' to return the turtle to its home position:
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Screenshot 2024-07-03 at 12.03.01.png (38.61 KiB) Viewed 15982 times

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Code: Select all

on mouseUp
   set the loc of img "TT" to the loc of img "x13"
end mouseUp

[richmond62]

I have now made 10 regular rectangular graphics (which I have named g1, g2, . . . g10) to act as drop-targets for codeBlocks:
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Screenshot 2024-07-03 at 12.14.53.png (646.49 KiB) Viewed 15980 times

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I have created a new field ('fLAP') and altered the code in the RESET button.

This is to keep track of WHERE codeblocks should be dropped:
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Screenshot 2024-07-03 at 12.19.25.png (221.29 KiB) Viewed 15980 times

[richmond62]

The next thing is to put code into the codeblock image of the MOVE block so that when a user clicks on it it reduplicates . . .
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Screenshot 2024-07-03 at 15.11.54.png (38.17 KiB) Viewed 15976 times

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Code: Select all

on mouseDown
   clone group "tMOVE"
   put fld "fLAP" into XXX
   set the name of the last group to ("t" & XXX)
   set the left of the last group to ((the left of group "tMOVE") + 50)
   set the top of the last group to ((the top of group "tMOVE") + 50)
end mouseDown

Now, while that will CLONE the group, the code in the cloned group needs to be changed.

[richmond62]

Screenshot 2024-07-03 at 15.21.37.png (142.17 KiB) Viewed 15975 times

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The 2 selected fields hold 2 parts of the code for the cloned group.

To insert the complete script into the new group we have this modification to the script in the original group:

Code: Select all

on mouseDown
   clone group "tMOVE"
   put fld "fLAP" into XXX
   set the name of the last group to ("t" & XXX)
   set the left of the last group to ((the left of group "tMOVE") + 50)
   set the top of the last group to ((the top of group "tMOVE") + 50)
   add 1 to fld "fLAP"
   put fld "fMOVECODE_1" into MC1
   put fld "fMOVECODE_2" into MC2
   set the script of img "moveBACK65.png" of group ("t" & XXX) to (MC1 & XXX & MC2)
end mouseDown

We now have to modify the script in the cloned group to make sure it can be dropped into the graphic rectangle drop-target, or deleted.

As it is not possible to delete an object from within its own script, we need to rename a group we wish not to use and 'park' it off screen: it can be deleted at a later time.

[richmond62]

The original MOVE group script (in the image component) has now been modified to take all these considerations into account:

Code: Select all

on mouseDown
   if exists(group "HAPPY") then
      delete group "HAPPY"
   end if
   clone group "tMOVE"
   put fld "fLAP" into XXX
   set the name of the last group to ("t" & XXX)
   set the left of the last group to ((the left of group "tMOVE") + 50)
   set the top of the last group to ((the top of group "tMOVE") + 50)
   add 1 to fld "fLAP"
   put fld "fMOVECODE_1" into MC1
   put fld "fMOVECODE_2" into MC2
   put fld "fMOVECODE_3" into MC3
   put fld "fMOVECODE_4" into MC4
   put fld "fMOVECODE_5" into MC5
   set the script of img "moveBACK65.png" of group ("t" & XXX) to (MC1 & XXX & MC2 & XXX & MC3 & XXX & MC4 & XXX & MC5)
end mouseDown

You will see that ALL the new script components of the cloned group are stored in a series of fields:
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Screenshot 2024-07-03 at 15.59.00.png (77.28 KiB) Viewed 15971 times

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This is obviously an extremely inefficient way of doing things.

It should also be clear that every time one clones a group it should end up on a different drop-target.
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Screenshot 2024-07-03 at 16.21.52.png (175.52 KiB) Viewed 15966 times

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Code: Select all

on mouseDown
   if exists(group "HAPPY") then
      delete group "HAPPY"
   end if
   clone group "tMOVE"
   put fld "fLAP" into XXX
   set the name of the last group to ("t" & XXX)
   set the left of the last group to ((the left of group "tMOVE") + 50)
   set the top of the last group to ((the top of group "tMOVE") + 50)
   add 1 to fld "fLAP"
   put fld "fMOVECODE_1" into MC1
   put fld "fMOVECODE_2" into MC2
   put fld "fMOVECODE_3" into MC3
   put fld "fMOVECODE_4" into MC4
   put fld "fMOVECODE_5" into MC5
   put fld "fMOVECODE_6" into MC6
   put fld "fMOVECODE_7" into MC7
   set the script of img "moveBACK65.png" of group ("t" & XXX) to (MC1 & XXX & MC2 & XXX & MC3 & XXX & MC4 & XXX & MC5 & XXX & MC6 & XXX & MC7)
end mouseDown

[richmond62]

It is far more efficient to store all those code snippets in those 7 fields as custom properties of an object:
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Screenshot 2024-07-03 at 16.39.48.png (492.52 KiB) Viewed 15963 times

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Screenshot 2024-07-03 at 16.42.55.png (249.74 KiB) Viewed 15963 times

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Code: Select all

on mouseDown
   if exists(group "HAPPY") then
      delete group "HAPPY"
   end if
   clone group "tMOVE"
   put fld "fLAP" into XXX
   set the name of the last group to ("move" & XXX)
   set the left of the last group to ((the left of group "tMOVE") + 50)
   set the top of the last group to ((the top of group "tMOVE") + 50)
   add 1 to fld "fLAP"
   put the X1 of button "MOVE_CODE" into MC1
   put the X2 of button "MOVE_CODE" into MC2
   put the X3 of button "MOVE_CODE" into MC3
   put the X4 of button "MOVE_CODE" into MC4
   put the X5 of button "MOVE_CODE" into MC5
   put the X6 of button "MOVE_CODE" into MC6
   put the X7 of button "MOVE_CODE" into MC7
   set the script of img "moveBACK65.png" of group ("move" & XXX) to (MC1 & XXX & MC2 & XXX & MC3 & XXX & MC4 & XXX & MC5 & XXX & MC6 & XXX & MC7)
end mouseDown

[richmond62]

For people who really want to "lose control" there is a whole slew of codeblock templates freely available here:

https://scratched.gse.harvard.edu/resou ... locks.html
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Scratch Control Blocks_if then else.png (21.81 KiB) Viewed 15958 times

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Scratch Event Blocks_When is greater than.png (14.43 KiB) Viewed 15958 times

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Scratch Motion Blocks_glide.png (22.33 KiB) Viewed 15958 times

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And THEN you can spend a considerable period of your life coding the lot.

[richmond62]

Now, let's work on our codeblock to change the turtle's direction of travel:
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turnSample.png (49.4 KiB) Viewed 15951 times

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We need a background image, a drop-down menu, and a field (exactly the same as for our movement codeblock):
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Screenshot 2024-07-04 at 17.57.01.png (41.91 KiB) Viewed 15949 times

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I have also imported a 'turn arrow' image for the drop-down menu.

[richmond62]

GROUP 'xTURN':
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Screenshot 2024-07-04 at 18.00.41.png (323.78 KiB) Viewed 15948 times

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The script of the background image 'turnBACK65.png' needs to be extremely similar to its homologue in GROUP 'tMOVE':

Code: Select all

on mouseDown
   if exists(group "SAD") then
      delete group "SAD"
   end if
   clone group "xTURN"
   put fld "fLAP" into XXX
   set the name of the last group to ("turn" & XXX)
   set the left of the last group to ((the left of group "xTURN") + 50)
   set the top of the last group to ((the top of group "xTURN") + 50)
   add 1 to fld "fLAP"
   put the X1 of button "TURN_CODE" into TC1
   put the X2 of button "TURN_CODE" into TC2
   put the X3 of button "TURN_CODE" into TC3
   put the X4 of button "TURN_CODE" into TC4
   put the X5 of button "TURN_CODE" into TC5
   put the X6 of button "TURN_CODE" into TC6
   put the X7 of button "TURN_CODE" into TC7
   set the script of img "turnBACK65.png" of group ("turn" & XXX) to (TC1 & XXX & TC2 & XXX & TC3 & XXX & TC4 & XXX & TC5 & XXX & TC6 & XXX & TC7)
end mouseDown

AND we must load the new code for the cloned TURN group into the custom properties of a button called 'TURN_CODE'.
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Screenshot 2024-07-04 at 18.16.30.png (491.78 KiB) Viewed 15947 times

[richmond62]

Now we have work on a RUN button:
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bottomBUTTONS.png (59.08 KiB) Viewed 15944 times

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[richmond62]

But before that let's HIDE a lot of our work by narrowing our stack:

[It is better to retain those items we are not using, rather than deleting them, as we may need them again.]
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prune.png (596.6 KiB) Viewed 15943 times

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AND add any buttons we may need later:
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Screenshot 2024-07-04 at 19.25.21.png (366.91 KiB) Viewed 15942 times

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Obviously we need to transfer the code in our temporary RESET button to our new one.
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RESET.png (1.98 KiB) Viewed 15939 times

[richmond62]

We can use the SLIDER to set how fast our Turtle moves:
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Screenshot 2024-07-05 at 16.16.29.png (68.67 KiB) Viewed 15922 times

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Code: Select all

on scrollbarDrag nV 
   set the moveSpeed to nV
end scrollbarDrag

Let's add some code to our buttons so thatthere is a viauak signal when a user mouses over them:

Code: Select all

on mouseEnter
   lock screen
   set the coloroverlay["color"] of me to blue
   set the coloroverlay["opacity"] of me to "75"
   unlock screen
end mouseEnter

on mouseLeave
   set the outerGlow of me to empty
   set the colorOverlay of me to empty
end mouseLeave

on mouseDown
   set the ink of me to notsrcor
end mouseDown

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Screenshot 2024-07-05 at 16.29.38.png (49.09 KiB) Viewed 15920 times

[richmond62]

Let's add some code to our buttons so thatthere is a viauak signal when a user mouses over them:

'Someone' was extremely tired.

Let's add some code to our buttons so that there is a visual signal when a user mouses over them.

[richmond62]

Having had a rethink of things I have changed the 'move' and 'rotate' flds in their respective groups to drop-down menus:
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Screenshot 2024-07-22 at 15.31.09.png (77.9 KiB) Viewed 15189 times

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Screenshot 2024-07-22 at 15.37.32.png (59.3 KiB) Viewed 15189 times

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Screenshot 2024-07-22 at 15.38.02.png (64.66 KiB) Viewed 15189 times

[richmond62]

This restricts the choices available to an end-useer:

The distances available are 1, 2,3, and 4.

As the distance between the centre of one square and an adjacent one is 120 pixels, the turtle will move in multiples of 120.
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Screenshot 2024-07-22 at 15.53.31.png (124.54 KiB) Viewed 15187 times

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The angles available are 90, 180, 270 degrees.

As angles such as 154 would involve quite complicated calculations to ensure the turtle travelled exactly to the centre of the nearest square these types of possibilities are best avoided.