Need help with a vJass ability

[v3nG3]

Hi. I'm currently learning vJass. I want to make an ability called 'Bouncing Shot' but I don't know how to get started with the trigger. I want to make this ability using vJass. Here's a description of the ability :

When auto-casting is enabled, every arrow she shoots bounces 3 times. Her arrows deal 2 x her agility to the first unit and the damage halves for every successive bounce.

This ability can be auto-cast by right clicking on the icon

Here's what I came up with so far :

*Trigger detects damage is taken by the attacked unit (a). This gives me a headache -.-
*Damages the attacked unit for 2 x Ranger's agility.
*A dummy unit is created at position of (a) to cast the dummy Bouncing Shot ability to a random enemy unit (b) within 400 AoE (If no enemy units are found within the area, arrow will not bounce).
*When the arrow hits (b), it deals 1/2 of 2 x Ranger's agility.
*Another dummy unit is created at position of (b) to cast the dummy Bouncing Shot ability to a random enemy unit (c) within 400 AoE.
*When the arrow hits (c), it deals 1/4 of 2 x Ranger's agility.
*This process continues for up to 3 bounces to make it look like as if it's bouncing.

The Dummy Bouncing Shot ability is used for showing the projectile (the arrow)

1. I couldn't figure out how to use vJass to detect damage is taken by the attacked unit. So, please show me in vJass, how to detect damage is taken by the attacked unit.

2. Can the whole thing be made into just 1 trigger? If so, how to do it?

Help will be appreciated.

 

[Adiktuz]

Best thing to do is to use a projectile system...

 

[Ameranth]

I've made something similar to this using dummies who cast an acid bomb based spell as an arrow projectile.

Basically just create a number of dummy units on top of the target unit, the dummies then cast their arrow at adjacent targets, then repeat for targets hit.

 

[Adiktuz]

he cannot use those as he wants the damage based on the agility of the hero... so it needs to be dealt using triggers...

 

[Ameranth]

It can be done using a timer that waits an amount of time based on target distance/missile speed.

Obviously there may be some small inconsistencies with targets that are far away and moving away, but it allows to handle the situation relatively easily.

 

[Adiktuz]

Yeah, there would be inconsistencies specially with units that has blink or hide... that's why its not a good approach...

 

[v3nG3]

Thanks Ameranth and Adiktuz. I think I've got the solution . Thanks again...oh, and added rep