Cycle color of actor by tapping

wdangelo@me.com

Hey all, as you can tell from the title I am a total noob. What I'd like to accomplish is have the default white box actor cycle through red, blue and green when tapped. I have managed to get the box to change to one color by using the change attribute but I can not figure out how to get it to change to another color when tapped again. I have tried adding another change attribute and rule but that doesn't work either. Any help would be truly appreciated!

Armelline

I'd probably do it something like this.

Change the self.Colour attribute to 0 and the default box colour to white if you want to start it as white.

Hopscotch

Here is a simple version:

Make an integer self attribute called ColorState in the actor, then add the following code:

Rule: If Touch is pressed
         Change Attribute: self.ColorState = mod( self.ColorState+1 , 3 )
End Rule

Rule: If self.ColorState = 0
         Change Attribute: self.Color.Red = 1
         Change Attribute: self.Color.Green = 0
         Change Attribute: self.Color.Blue = 0
End Rule

Rule: If self.ColorState = 1
         Change Attribute: self.Color.Red = 0
         Change Attribute: self.Color.Green = 1
         Change Attribute: self.Color.Blue = 0
End Rule

Rule: If self.ColorState = 2
         Change Attribute: self.Color.Red = 0
         Change Attribute: self.Color.Green = 0
         Change Attribute: self.Color.Blue = 1
End Rule

A more flexible version:

Create a table, lets call it T_ColorTable, with three real columns, and a text column. Label each column Red, Blue, Green and the last, Color. Now fill consecutive rows with the red, green and blue color values ( fractions between 0 and 1, e.g. 0.3).

Advantage, easily extendable - just add more rows of colors.

T_ColorTable

Row      Red      Green    Blue     Color
-------- -------- -------- -------- --------
1        1        0        0        Red
2        0        1        0        Green
3        0        0        1        Blue
4        1        0        1        Magenta
5        0.5      0.5      0        Olive          

Now make an integer self attribute called ColorState in the actor, then add the following code:

Change Attribute: self.Color.Red = tableCellValue(T_ColorTable,self.ColorState+1,1)
Change Attribute: self.Color.Green = tableCellValue(T_ColorTable,self.ColorState+1,2)
Change Attribute: self.Color.Blue = tableCellValue(T_ColorTable,self.ColorState+1,3)

Rule: If Touch is pressed
         Change Attribute: self.ColorState = mod( self.ColorState+1 , tableRowCount(T_ColorTable) )

         Change Attribute: self.Color.Red = tableCellValue(T_ColorTable,self.ColorState+1,1)
         Change Attribute: self.Color.Green = tableCellValue(T_ColorTable,self.ColorState+1,2)
         Change Attribute: self.Color.Blue = tableCellValue(T_ColorTable,self.ColorState+1,3)
End Rule

Hopscotch

Snap @Armelline

Socks

Here's another version . . .

Real attribute = 'A'.

When touch is pressed:
--Change A to A+120
--Change Red to cos(A)+0.5
--Change Green to cos(A+120)+0.5
--Change Blue to cos(A+240)+0.5

. . . . . . . . .

This cycles through Red > Blue > Green, but if you change the first Change attribute to -120 it will cycle Red > Green > Blue . . . if you change it to +1.40625 it will cycle through an 8bit colour palette (256 colours from Red to Red), or if you change it to +0.00002145767212 you will cycle around the entire 24bit colour palette, although it will take you 16,777,216 clicks to do so ! More usefully, +60 will cycle through Red > Magenta > Blue > Cyan > Green > Yellow > Red . . .

Hopscotch

@Socks said:
... or if you change it to +0.00002145767212 you will cycle around the entire 24bit colour palette, ...

"Crazy Colorful Color Clicker"

Trademarked it yet @Socks? There is a song in there somewhere.

Socks

@Hopscotch said:

@Socks said:
... or if you change it to +0.00002145767212 you will cycle around the entire 24bit colour palette, ...

"Crazy Colorful Color Clicker"

Trademarked it yet @Socks? There is a song in there somewhere.

A song, and an app, and probably a Broadway musical, going to get Danny DeVito to play me.

wdangelo@me.com

Thank you all so much! This is extremely helpful!

Toque

You could have four different colour boxes and use change image behavior.