Moving menu down in LCD

[rikaine]

Thank you Art, but rotatearray is not working for me.

To simplify the question, I used text on the left side as: V1, V2, V3 but actually they are different strings, that is what creates the problem.

1.MY FIRST VARIABLE=20
================
2.SECOND VALUE =25
3.THIRD ONE =30
4.DIFFERENT >40
5.FIFTH VAR =50
================
6.SIXTH VAR =60

Since I can only show 4 lines on the LCD, when the user presses DOWN button I need to know the following:
selected_variable: Which variable is the user currently on (in the above example: 4)
first_line_displayed: Which lines should be displayed OR which line should be on the top (in the above example: 2)

Here is a table I created:

Dark grey is the currently selected variable
Light grey are displayed in the LCD

Based on this table:
first_line_displayed = selected_variable - 2
IF (selected_variable - 2 <= 0) THEN first_line_displayed = 1
IF (selected_variable = max_number_of_variables) THEN first_line_displayed = selected_variable - 3

This very simple method works for display purposes. However, the problem is I cannot form a loop to go through all 8 (or less/more) variables and display only the ones that should be played based on the table above (and on the correct place). Can you help me form such a loop?

[Amoque]

I think that Select and Case will work:

DG=Dark Grey number
LSD = Line Start Display
MNV = Max Number of Variables

Select case DG
Case is < 4
LSD = 1 : GOSUB Display
Case is 4 to MNV - 1 'MNV calculated or hard coded. Only first 3 and last one are special cases.
LSD = DG - 2 : GOSUB Display
Case = MNV
LSD = MNV - 3: GOSUB Display
End select




Display:
For LP = LSD to LSD + 3
DIPLAY LINE LP
NEXT LP
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