Break Channel, Break spell

[Titanhex]

So I have a few channeling spells that, if the channeling is broken, I want the spell to end. Of course I'm having enough trouble making a spell MUI/MPI and looping, but I still have to find a way to make it so the effect of the spell ends when the caster stops channeling.

How do you do this? I was looking for a "Finishes Casting an Ability" type if statement condition, but couldn't find one.

 

[Lord_BoNes]

You create a trigger using "Generic unit stops casting an ability".

Or you can use a periodic timer that checks the caster's current-order-id IE: if the caster isn't using the right order (EG: "channel", etc.) then terminate channeling functions. To do this you use:

if (GetUnitCurrentOrder(<unit>) != OrderId(<ability order-id>)) then
    <insert channeling termination code>
endif

Hope this is what you're after.

 

[onisaiyan808]

I think he's talking about how when the spell is broken, he wants what's been charged up and to be used anyways, kinda like the Alechemist in DotA to stun based on how long he charged his spell. I've also been looking for a system like that. Anyone that can solve this will be awesome forever.

 

[Cokemonkey11]

Here is the script for the spell "unstable concoction" from openDota.

I'll warn you now not to copy it though, most of dota's code could be "done better"

 

[spiwn]

Unstable Concoction
Based on Channel.

When it goes into effect, a unit (e01N) is created on top of the target unit. Then the variables Caster (the dummy) and Target are saved to the game cache. A new timed trigger is created every 0.1 seconds, and the newly created unit also has a 6 seconds timed life, then its pathing is removed, it's set to invulnerable and gains Aloc. Now, another trigger is created which can be called by either every 0.5 seconds or when a spell has finished casted. Finally the Hero, Target and Caster units are saved to the cache.

The trigger that is run every 0.1 seconds: Recovers Caster and Target from the cache, checks if the enemy has less than 1 life, or it is not visible, the timer is paused. If neither of those two conditions is met, then set the Caster's X and Y to be equal to the Target's X and Y. This is done to gain vision of the enemy unit.

The trigger that is run every 0.5 seconds: Checks if it has been called because the unit finished the spell cast of Unstable Concoction, if its true then recover Hero, Target and Caster from the game cache, create a unit (e00C) on top of the hero, add a Storm Bolt ability (A0JD) with its level equal to the number of times this trigger has been called-1 (with 1 being the lowest). Then it is told to use it on Target. Finally the unit is given Aloc, and given a timed life of 2 seconds. Then if the Caster unit is still alive, kill it then disable the trigger. Do note that there's an if at the beginning of this trigger, if it's not met then this trigger does nothing.

Hmm, a 2 seconds timed life of the dummy unit casting the storm bolt means that if the enemy is over 3000 units from you the "XXX has commited suicide" may happen. It needs a running hero at 522 speed (5 seconds channel: 2610 units, add casting range + buffer + the time spent to get to the enemy hero and you can see it can travel over 3000 units)

From here

 

[Titanhex]

These sources have been really helpful to recieve, as I'm making spells and I do need an idea on how certain spells work.

However, I wasn't interested in channel then break and fire. You see, my channel has a loop, and I want that loop to break when the channel ends. Every loop is either heal or damage per second. If the channeling breaks, it's only appropriate that the units should stop healing or being damaged.

 

[spiwn]

The concept of Unstable Concoction should show you how to detect the channeling break.
What you do between the start of the channeling and the break is up to you.

 

[onisaiyan808]

Check out the Shackles spell.

I'm pretty sure if you stop during shackles, you stop doing damage/healing.

To make it heal, set the damage done to a negative.

 

[Titanhex]

Yeah, but what if I want the spell to both heal or hurt, depending on the unit being an ally or enemy?

Or what if I want the unit to have a buff like bloodlust while it's being channeled, but if the caster stops channeling the bloodlust fades?

 

[spiwn]

Already answered to that:

The concept of Unstable Concoction should show you how to detect the channeling break.
What you do between the start of the channeling and the break is up to you.

 

[Titanhex]

Ah yeah tanks. I was refering to onisaiyan's reply though.