[Solved] Cancel Building Ability

[Kam]

I have a system that successfully cancels an ability being cast by a unit. This means the mana is not spent and the cooldown is not started. When I apply this to a building it does not work. Why are spells cast by buildings different?

• Unit Cannon Try
  • Events
    • Unit - A unit Begins casting an ability
  • Conditions
    • (Ability being cast) Equal to Cannon Fodder
  • Actions
    • Set Unit_Cannon_Pos = (Target point of ability being cast)
    • Set Unit_Cannon_Pos_B = (Position of (Triggering unit))
    • Custom script: set udg_Unit_Cannon_AoE=GetLocationZ(udg_Unit_Cannon_Pos)
    • Set ErrorPlayer = (Owner of (Triggering unit))
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Distance between Unit_Cannon_Pos and Unit_Cannon_Pos_B) Less than 1500.00
      • Then - Actions
        • Unit - Order (Triggering unit) to Stop
        • Set ErrorMessage = Target is inside minimum range.
        • Custom script: call ErrorMessage(udg_ErrorMessage,udg_ErrorPlayer)
      • Else - Actions
    • Destructible - Pick every destructible within 450.00 of Unit_Cannon_Pos and do (Actions)
      • Loop - Actions
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Destructible-type of (Picked destructible)) Equal to Unit Cannon Deep Sea Blocker (Small)
          • Then - Actions
            • Unit - Order (Triggering unit) to Stop
            • Set ErrorMessage = Unable to target deep water.
            • Custom script: call ErrorMessage(udg_ErrorMessage,udg_ErrorPlayer)
          • Else - Actions
    • Destructible - Pick every destructible within 800.00 of Unit_Cannon_Pos and do (Actions)
      • Loop - Actions
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Destructible-type of (Picked destructible)) Equal to Unit Cannon Deep Sea Blocker (Large)
          • Then - Actions
            • Unit - Order (Triggering unit) to Stop
            • Set ErrorMessage = Unable to target deep water.
            • Custom script: call ErrorMessage(udg_ErrorMessage,udg_ErrorPlayer)
          • Else - Actions
    • Destructible - Pick every destructible within 300.00 of Unit_Cannon_Pos and do (Actions)
      • Loop - Actions
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • Or - Any (Conditions) are true
              • Conditions
                • (Destructible-type of (Picked destructible)) Equal to Ashenvale Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Barrens Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Barrens Canopy Tree
                • (Destructible-type of (Picked destructible)) Equal to Black Citadel Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Cityscape Fall Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Cityscape Snowy Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Cityscape Summer Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Cityscape Winter Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Cityscape Ruined Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Dalaran Ruins Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Dungeon Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Felwood Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Felwood Canopy Tree
                • (Destructible-type of (Picked destructible)) Equal to Icecrown Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Icecrown Canopy Tree
                • (Destructible-type of (Picked destructible)) Equal to Northrend Canopy Tree
                • (Destructible-type of (Picked destructible)) Equal to Fall Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Summer Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Snowy Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Winter Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Northrend Tree Wall (Normal)
                • (Destructible-type of (Picked destructible)) Equal to Outland Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Ruins Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Ruins Canopy Tree
                • (Destructible-type of (Picked destructible)) Equal to Underground Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Village Tree Wall
                • (Destructible-type of (Picked destructible)) Equal to Northrend Tree Wall (Pathing Blocker)
                • (Destructible-type of (Picked destructible)) Equal to Pathing Blocker [Outer]
          • Then - Actions
            • Unit - Order (Triggering unit) to Stop
            • Set ErrorMessage = Target area is obstructed.
            • Custom script: call ErrorMessage(udg_ErrorMessage,udg_ErrorPlayer)
          • Else - Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Unit_Cannon_Pos is masked for (Owner of (Triggering unit))) Equal to True
      • Then - Actions
        • Unit - Order (Triggering unit) to Stop
        • Set ErrorMessage = Target area must be visible.
        • Custom script: call ErrorMessage(udg_ErrorMessage,udg_ErrorPlayer)
      • Else - Actions
    • Custom script: call RemoveLocation(udg_Unit_Cannon_Pos)
    • Custom script: call RemoveLocation(udg_Unit_Cannon_Pos_B)

 

[deathismyfriend]

is the ability a hero ability ? if it isnt which part in the code does it stop at ?

 

[Kam]

It is a unit ability. All the above code does is check for a series of custom limitations. If any one fails then it stops the spell from actually being cast - no mana lost, cooldown is not started.

This works as intended with a unit caster, but when I apply it to a building caster it does not.

 

[deathismyfriend]

only thing i could think of is that one of the points u use is getting nulled and returning 0 so the conditions are always false

 

[Kam]

I've narrowed it to the fact that buildings don't have a "stop" order in their command card.

Is there any alternative command for buildings that accomplishes the same effect?

 

[deathismyfriend]

stop does stop buildings from attacking but only once. mybe that is the problem.

if it continuosly casts the ability its that u need to stop the unit from using that ability mybe try issuing the unit to stop then pause then unpause the unit

 

[Kam]

As far as I can tell the stop order has no effect on buildings.

Pausing and unpausing causes it to cast the ability until it has no mana left.

I think buildings are just entirely different.

 

[deathismyfriend]

As far as I can tell the stop order has no effect on buildings.

Pausing and unpausing causes it to cast the ability until it has no mana left.

I think buildings are just entirely different.

create 2 buildings at center of map with enemies around it. then make a trigger with the event player ends cinematic event. then in the action order those units to stop. when u press it once it appears to do nothing. but when u press esc fast enough ull notice that the units do stop attacking. pausing and unpausing doesnt do anything without a stop event. u can try putting the stop action after u pause the unit and b4 u unpause the unit. mybe this will work.

 

[defskull]

It is because Buildings' Art - Animation - Cast Point is set to 0.000.
Units usually have this field filled with values ranging from 0.3 ~ 0.5.
This is the cast delay of a unit for it to successfully cast a spell.

By adjusting the value within the default range (0.3 ~ 0.5), it should solve the problem.

 

[Zeatherann]

exactly what defskull said

 

[Kam]

That is so much simpler than I was making it out to be. For anyone curious I've attached the correct solution.