I need some help making a sprite point towards a clone I have absolutely no idea on how to do it, very confusing. Although I know its possible because I have played a game where that happened.

Squidy66 wrote:

I need some help making a sprite point towards a clone I have absolutely no idea on how to do it, very confusing. Although I know its possible because I have played a game where that happened.

Are you sure that it was a clone not just a duplicate sprite? I just tried to do it, and i can't think of a way…while pointing to another sprite is easy.

Each clone has it's own x-y coordinates. If you store these in lists indexed by clone-number (so first item in list xpos is the x-position for clone 1 etc) then you can point towards that clone - the easiest way is probably a ghost sprite that goes to the coordinates and you just point to the ghost sprite.

no its a clone, like if have a sprite and i tell it to create a clone 40 times i want another sprite to be able to point towards the clones. Super Tricky.

Not that tricky really - see http://scratch.mit.edu/projects/46472058/

Squidy66 wrote:

I need some help making a sprite point towards a clone I have absolutely no idea on how to do it, very confusing. Although I know its possible because I have played a game where that happened.

This is actually INCREDIBLY easy. Here it is in steps:
1. Each clone must have its own special number

when I start as a clone
set [my# v] to [1 ]

where the clone's number is equal to the number of clones on the board when it was created. (Ex: the first clone created would have a number 1, second clone created would have a number 2, etc.)
2. Each clone stores its coordinates in two separate lists, at the number in the list that corresponds with its own number

replace item (1 v) of [CloneX  v] with [ (x position)]

replace item (1 v) of [CloneY  v] with [ (y position)]

3. Depending on which clone you want to point towards, here is the formula:

if <(item (1 v) of [CloneX  v]) > [(x position) ]> then
    
point in direction ((90) - ([atan v] of (((item (1 v) of [CloneY  v]) - (y position)) / ((item (1 v) of [CloneX  v]) - (x position))))) 
end
if <(item (1 v) of [CloneX  v]) < [(x position) ]> then
    
point in direction ((-90) - ([atan v] of (((item (1 v) of [CloneY  v]) - (y position)) / ((item (1 v) of [CloneX  v]) - (x position))))) 
end

Instead of putting 1 for the items, it can be any number, as long as it isn't greater than the number of clones created.
Here's an example of the formula put to use: http://scratch.mit.edu/projects/30941872
(the formula can be found in any of the tower sprites, in the block “Find Closest”)

I made a quick remix of deck26's project (linked above), to show an alternative method which avoids using lists.

http://scratch.mit.edu/projects/46943430/

Hope that's helpful!

ianrocks wrote:

Squidy66 wrote:

I need some help making a sprite point towards a clone I have absolutely no idea on how to do it, very confusing. Although I know its possible because I have played a game where that happened.

This is actually INCREDIBLY easy. Here it is in steps:
1. Each clone must have its own special number

when I start as a clone
set [my# v] to [1 ]

where the clone's number is equal to the number of clones on the board when it was created. (Ex: the first clone created would have a number 1, second clone created would have a number 2, etc.)
2. Each clone stores its coordinates in two separate lists, at the number in the list that corresponds with its own number

replace item (1 v) of [CloneX  v] with [ (x position)]

replace item (1 v) of [CloneY  v] with [ (y position)]

3. Depending on which clone you want to point towards, here is the formula:

if <(item (1 v) of [CloneX  v]) > [(x position) ]> then
    
point in direction ((90) - ([atan v] of (((item (1 v) of [CloneY  v]) - (y position)) / ((item (1 v) of [CloneX  v]) - (x position))))) 
end
if <(item (1 v) of [CloneX  v]) < [(x position) ]> then
    
point in direction ((-90) - ([atan v] of (((item (1 v) of [CloneY  v]) - (y position)) / ((item (1 v) of [CloneX  v]) - (x position))))) 
end

Instead of putting 1 for the items, it can be any number, as long as it isn't greater than the number of clones created.
Here's an example of the formula put to use: http://scratch.mit.edu/projects/30941872
(the formula can be found in any of the tower sprites, in the block “Find Closest”)

how do you get that? /scratchblocks

silverCreeper356 wrote:

ianrocks wrote:

Squidy66 wrote:

I need some help making a sprite point towards a clone I have absolutely no idea on how to do it, very confusing. Although I know its possible because I have played a game where that happened.

This is actually INCREDIBLY easy. Here it is in steps:
1. Each clone must have its own special number

when I start as a clone
set [my# v] to [1 ]

where the clone's number is equal to the number of clones on the board when it was created. (Ex: the first clone created would have a number 1, second clone created would have a number 2, etc.)
2. Each clone stores its coordinates in two separate lists, at the number in the list that corresponds with its own number

replace item (1 v) of [CloneX  v] with [ (x position)]

replace item (1 v) of [CloneY  v] with [ (y position)]

3. Depending on which clone you want to point towards, here is the formula:

if <(item (1 v) of [CloneX  v]) > [(x position) ]> then
    
point in direction ((90) - ([atan v] of (((item (1 v) of [CloneY  v]) - (y position)) / ((item (1 v) of [CloneX  v]) - (x position))))) 
end
if <(item (1 v) of [CloneX  v]) < [(x position) ]> then
    
point in direction ((-90) - ([atan v] of (((item (1 v) of [CloneY  v]) - (y position)) / ((item (1 v) of [CloneX  v]) - (x position))))) 
end

Instead of putting 1 for the items, it can be any number, as long as it isn't greater than the number of clones created.
Here's an example of the formula put to use: http://scratch.mit.edu/projects/30941872
(the formula can be found in any of the tower sprites, in the block “Find Closest”)

how do you get that? /scratchblocks

How do you keep track of this while all the clones are moving?