[Trigger] Missile - cross product or other way?

[blit_40912]

so peepz i've been trying to imitate a missile system in which is turn rates are affected. Just like a homing missile but it somehow turns according to where the target is:

for instance on every periodic time (0.03 seconds)
if the unit is on the left side of the missile:
then add angle
if on right side
then reduce angle

Visualization:

the turning_point_domain changes periodically, units on left represented by yellow, green on right domain.

I just wanted to know if the cross product is the only way to achieve this? or is there any other way?

<@maker>
I tried making that like your trigger but it somehow turns away if my missile is fired horizontally

 

[Spartipilo]

I have no idea what you mean. Try to be as precise and explanation-redundant-abundant as possible.

 

[Maker]

Untitled Trigger 001 Events Time - Every 0.02 seconds of game time Conditions Actions -------- -------------------------------------------------- -------- -------- Set unit variables -------- -------- -------------------------------------------------- -------- Set u1 = Blood Mage 0000 <gen> Set u2 = Paladin 0003 <gen> -------- -------------------------------------------------- -------- -------- Set location variables -------- -------- -------------------------------------------------- -------- Set p1 = (Position of u1) Set p2 = (Position of u2) -------- -------------------------------------------------- -------- Set r1 = (Facing of u1) -------- -------------------------------------------------- -------- If (All Conditions are True) then do (Then Actions) else do (Else Actions) If - Conditions (Cos(((r1 + 45.00) - (Angle from p1 to p2)))) Greater than 0.00 Then - Actions Game - Display to Player Group - Player 1 (Red) the text: Left Set r1 = (r1 + 6.00) Unit - Make u1 face r1 over 0.00 seconds Else - Actions Game - Display to Player Group - Player 1 (Red) the text: Right Set r1 = (r1 - 6.00) Unit - Make u1 face r1 over 0.00 seconds Set p3 = (p1 offset by 15.00 towards r1 degrees) -------- -------------------------------------------------- -------- Unit - Move u1 instantly to p3 -------- -------------------------------------------------- -------- Custom script: call RemoveLocation(udg_p1) Custom script: call RemoveLocation(udg_p2) Custom script: call RemoveLocation(udg_p3)

 

[blit_40912]

<@spartapilio> sorry and updated :|

 

[deathismyfriend]

u should really explain better as i have no idea what ur tlking about.

do u want the missile to be a homing missile ? or to turn away from the unit when it gets close ?

 

[blit_40912]

<@deathismyfriend>
nearly a homing missile. WHAT i really wanted is that when i fired a bullet/missile it will

-following actions inside a timer/periodic_event
1> pick every units (unit_group)
2> check if that unit if on YELLOW SIDE THEN TURN MISSILE COUNTER-CLOCKWISE
else-if on GREEN SIDE TURN MISSILE CLOCKWISE
3> loop it until the bullet/missile hits

<P.S> I looked for some missile sys here in hive and most of them are unit oriented (100% missile hit since it loops through target unit. you can't avoid them -_-)

 

[Spartipilo]

I still don't get it. I don't even know what's the deal with the cross effect.

If you want a Homing Missile, why Hive resources that handles that doesn't work? I have my myself a Homing Missile system some days ago. It just faces and moves faster and faster to the target, just like a Homing Missile is supposed to.

Of course that if the unit is in the left, the Missile will rotate to the left. If it's on the right, it will rotate to the right.

What i feel (taking some of what Maker did) is that you want the missile not to go toward the target in straight line, but rather be affected by movement inertia that makes it turn slower, so the missile would make some kind of spiral shape before reaching the target.

I think what maker did does your stuff.

 

[rulerofiron99]

You could also just use components.

Break up velocity into an X-component and a Y-component.
Every iteration, you simply call SetUnitX/Y, adding the X/Y components to the unit's X/Y positions. Super simple.
Now for the actual turning/speed/etc. Every iteration (or it can be a less frequent iteration), you accelerate the unit toward the target.
Set VelocityX = VelocityX + cos(angle between missile and target) * (some constant acceleration)
Set VelocityY = VelocityY + sin(angle between missile and target) * (as above)