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'Position_Enemies()' function...?

Blitz3D Forums/Blitz3D Beginners Area/'Position_Enemies()' function...?

elseano(Posted 2003) [#1]
Ok, I'm starting the enemy/AI coding part if my game and I need some help. Basically, I need some enemies that will form different formations like 'V' or 'Line' etc. I'm probably going to do this with functions [duh], but how do I write it so that I can change the ammount of enemies etc. ie.

function form_V(ammount#,xpos#,zpos#) 
???????????????? ;the part i need help with lol
end function


ok, now I call the function...
form_V(5,0,50)


...And te enemies should appear on the screen like this:

V-------V
--V---V--
----V----

Or if i called 'form_line(5,0,50)' the enemies would appear on screen like this:

V V V V V

Does anyone have any ideas? Please help me with this...Ps, im using types to do this...


(tu) sinu(Posted 2003) [#2]
you could do a linecheck on the enemy to see wether it has someone standing at its left or right and then if not make someone go stand there. With one enemy chosen as the main enemy who takes the first position.


elseano(Posted 2003) [#3]
This is in Blitz3D, right?


(tu) sinu(Posted 2003) [#4]
yep, position the first enemy where you want it, then do a check on him using linepick to his left,right etc and if the position is clear position the next enemy there and loop till the last one.


MSW(Posted 2003) [#5]
Not enough information...like where is the X,Z position in relateion to the eneimes...how far they are to be spaced appart, etc...but here is a simple way of doing what you want:

function form_V(ammount%,xpos#,zpos#) 

;note: changed ammount to an integer

Svee%=1       ;counters for the loop
Evee%=ammount ;Start and End of the vee

Mpoint% = Evee / 2 ;trying to find the mid point

If (Evee AND 1) Then Mpoint = Mpoint + 1
;If the integer Evee is odd then add 1 to it to account for integer divide truncation (5/2=2 in integer math)


Xoff# = 10
Zoff# = -10

;the offsets or how far appart to place the enemies
;the values of xpos and zpos represnet the top-left corner of the vee

For i = Svee to Evee

  enemy = NEW enemytype

   PosistionEntity enemy, xpos, 0 ,zpos

 If i = Mpoint then Zoff = -(Zoff)

 xpos = xpos + Xoff
 zpos = zpos + Zoff

Next 

End function


the form_line function is even simpler:

Function form_line(ammount%,xpos#,zpos#)
;again ammount is an integer
;and xpos,zpos is in refrence to the left most side of the line

Xoff# = 10
;how far appart they should be

For i = 1 to ammount

  enemy = NEW enemytype
   
   PosistionEntity enemy, xpos,0,zpos

   xpos =xpos + Xoff

Next

End function


There is more to it, especialy involveing the use of entities/types...but I have a feeling that you just were trying to figure out how to get them into posistion more then anything