Basic Manual-Aim Arrow

[Kebur]

Hi! I'm looking to make an ability that launches an arrow in the direction of the targeted point and effects the first unit it collides with. That is, aimed much like the classic "flesh hook" (only without the hooking part) - Just a simple flying arrow.

I understand I ought to make a dummy unit, spawn it on dummy spell cast and make it travel towards target point. It's the last part I'm insecure about; How do I make it travel closer to the target point every x seconds?

Thanks in advance
Kebur

 

[WaterKnight]

You make a timer that fires every x seconds, save dummy unit and target point, determine the x/y part of the movement (dx/d, dy/d), multiply it with your speed and the move interval, the result is added to the dummy's coordinates every interval. When the remaining distance is less than the length you want to add, you place the dummy at the destination point instead and cancel the movement and all. Would be a possibility at least.

 

[ForeverBeADragon]

Take this:[GUI] Dynamic Indexing Template
It's a good template to start.

 

[Kebur]

Thanks for the replies! I'll look into it after I've rested my tired head

 

[Adiktuz]

or you can look up at the missile/projectile systems on the spells section

 

[JGGDMakervb6]

Well the easiest way to do the damage multiplier upon the distance it travelled is to set the mana regen of the dummy unit to 1 every distance it travelled and set the mana to 0 at the first time it launches then use the trigger to damage the unit upon hitting the unit.

Hope that helps too

 

[Adiktuz]

I don't see him asking for damage depending on distance travelled... but that will definitely help him in the future if ever he decides to do one...

Though using mana is not a good method, because there can be other factors which can affect his mana... the better way to do it is to just save the starting coordinates, then upon impact, calculate the distance... or you can already compute for distance travelled every time you move the missile...

 

[JGGDMakervb6]

Make the unit invulnerable and just make the unit spell immune

 

[Adiktuz]

Just add the locust ability... it makes the unit invulnerable, unselectable, uncolliding, etc...

 

[JGGDMakervb6]

I tried using that but it makes the unit unusable in triggers

 

[Adiktuz]

Yeah, so you set the unit first into variables so you can use it... All dummy units in spells and systems here have locust you know...

 

[JGGDMakervb6]

Thanks great help for me I dont know that Im trying to figure that out for about ages ago

 

[Adiktuz]

and one more thing, locust units can also be picked by the Pick every unit owned by player...

 

[JGGDMakervb6]

Another thanks

 

[Adiktuz]

@OP - you would also need to filter out the closest unit in case there are more than one unit in the collision point...

 

[JGGDMakervb6]

How to do that?

 

[Adiktuz]

check for their distances from the position of the arrow... the one with the lowest distance is the closest...

 

[JGGDMakervb6]

Well can you give me the trigger cuz its hard

 

[Adiktuz]

Look at the JASS section, there are scripts there to get closest something

 

[JGGDMakervb6]

Oh thanks