math - column calc

paranoid_android

I would like to identify which column my actor is in. I am dividing the screen into 4 (480/4 = 120), and I must include the camera offset.

in other apps I would use

int ( (self.postition.x - game.cameraX) / 120 )

How can I accomplish that here
@pa

CodeMonkey

Use Column = floor(abs(self.position-game.cameraX)/120)
That should give you 0,1,2,3 for the values. And 4 if you are at the right border.

in a scene that is 480 width, actor position 0-119 is the first column, 120-239 is the second column, 240-359 is third, 360-479 is fourth, and 480 is fifth.

If you want to include that 480 in the 4th column add the min function.
Column = min(3,floor(abs(self.position-game.cameraX)/120))

paranoid_android

CM - that works perfect thanks

paranoid_android

Here is my next challenge. I am trying to figure out the math for the row the actor is in. But since there is a perspective involved, the math will be uneven.

I would like to use a similar expression as above. Have a value range for each row.

The range would actually be a tolerance. (ie 10px)
row1 actor width = 117 (range 97-127)
row2 actor width = 85 (range 75-95 )
row3 actor width = 72 (range 62-82)

I could create a game variable for each row value. I know I at least have to have row1.

Ultimately I would like to do it with 1 game variable, and one prototype behavior.

CodeMonkey

are those all the rows you have? If not, how many rows do you have and what are their ranges?
Are the ranges supposed to overlap?

paranoid_android

in total there are 12 instances of the prototype. Four columns by three row. So the ranges I've posted are it.

The ranges are not suppose to overlap. The reason I have ranges, is to allow for slight variation in the placement and sizing of the actors.

I wonder if thinking in percentages is a better way to solve this. In the end the behaviour has to set the prototype variable to 1,2,or3.