moving 1 to another position if keyhit is true?

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Ryan Moody
 #1
No no, I meant do it like this:


; Assumes global X and Y
; Remember to check for moving outside of the array,
; and to include some sort of delay.

Function moveblock()

	If KeyHit(KEY_RIGHT)

   		array[X,Y] = 0
   		X = X + 1
   		array[X,Y] = 1
		
	EndIf
	
	If KeyHit(KEY_LEFT)
	
   		array[X,Y] = 0
   		X = X - 1
   		array[X,Y] = 1

	EndIf 
	
	If KeyHit(KEY_DOWN)
	
   		array[X,Y] = 0
   		Y = Y + 1
   		array[X,Y] = 1	

	EndIf
	
	If KeyHit(KEY_UP)
	
   		array[X,Y] = 0
   		Y = Y - 1
   		array[X,Y] = 1

	EndIf

End Function


Your method requires only one variable. Imagine a 3 x 3 array is numbered like this:

    0 1 2
    # # #
0 # 0 1 2
1 # 3 4 5
2 # 6 7 8


If BoxPos was say 5, then by the above grid, it is stored in column 2, row 1. The array is a 3 x 3 grid. 5 Mod 3 = 2, the column number, and 5 / 3 = 1, the row number. Try it for other values of BoxPos to see how it works. However, this method is far slower and less natural than the one above - use the one with the X and the Y.

Ryan