[Trigger] Hazardous terrain?

[LordPerenolde II]

I'm planning on making hazardous terrain, like standing in area with lava will deal damage to units until they get off the area where it is, but stading in lava = take damage over time (hazard), not standing in lava = no damage (safe). How do I create a continuous event which detects whether a unit enters (and damaging it) and/ot exit(thus stop damaging it)?

 

[Duckfarter]

Theres a condition that checks if a point is contained within a certain kind of terrain.

• (Terrain type at (Center of (Playable map area))) Equal to Lordaeron Summer - Dirt

Theres also.

GetTerrainType takes real x, real y returns integer

 

[Pyrogasm]

You could get away with a bunch of invisible locusted units with permanent immolation whose areas of effect collectively approximate the shape of the hazardous terrain. You don't want them to overlap, though, or units will take too much damage.

 

[Uncle]

If the lava is conveniently shaped to fit a region you can easily have a trigger that runs every X seconds which Damages units inside of it. You can also look for units in a circle radius by putting a Point at the center of the lava and using the Pick Every Unit function along with Units within range of Point. Alternatively, you can track all of your units in a unit group and periodically check if they're standing on Lava, and if so Damage them. The best solution depends on how your map works.

Here's an example of the last solution I mentioned. This trigger will damage units inside of LavaUnitGroup (a Unit Group variable) if they're standing on Lava:

• Lava Damage
  • Events
    • Time - Every 0.10 seconds of game time
  • Conditions
  • Actions
    • Unit Group - Pick every unit in LavaUnitGroup and do (Actions)
      • Loop - Actions
        • Set VariableSet LavaUnit = (Picked unit)
        • Set VariableSet LavaPoint = (Position of LavaUnit)
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Terrain type at LavaPoint) Equal to Dungeon - Lava
          • Then - Actions
            • Unit - Cause LavaUnit to damage LavaUnit, dealing 50.00 damage of attack type Spells and damage type Normal
          • Else - Actions
        • Custom script: call RemoveLocation(udg_LavaPoint)

Here's an example of adding a unit to the Unit Group:

• Lava Add Example
  • Events
    • Unit - A unit Finishes training a unit
  • Conditions
  • Actions
    • Unit Group - Add (Trained unit) to LavaUnitGroup

You can use the Add To Unit Group action to fill the Unit Group with all of your desired units. You can also Set the LavaUnitGroup variable in order to fill it with units that meet certain conditions, for example Set Variable LavaUnitGroup = Units owned by Player 1 (red).

 

[LordPerenolde II]

Thank you so much for the help, guys. I'll let you know as soon as I get around to it.