Detect if unit is in water?

[shiFt]

What function would I use?

 

[Magentix]

    function IsPointWater takes real x, real y returns boolean
        return IsTerrainPathable(x,y,PATHING_TYPE_WALKABILITY) and not(IsTerrainPathable(x,y,PATHING_TYPE_AMPHIBIOUSPATHING))
    endfunction

Use that function with [ljass]GetUnitX[/ljass] and [ljass]GetUnitY[/ljass]

Edit:
[ljass]IsPointWater[/ljass] is an old func out of Vexorian's CasterSystem, it seems wrong, but apparently it works...
(You'd think you want the terrain to be AMPHI, but not WALKABLE...)

Edit 2: [ljass]IsTerrainPathable[/ljass] is a FUBARed native, returns the opposite of what you'd expect. So the function I provided works

 

[shiFt]

how would I use this to, basically want to detect if units are in water and slow there ms, then when they exit again they get their ms restored to normal speed. Regions?

 

[ertaboy356b]

how would I use this to, basically want to detect if units are in water and slow there ms, then when they exit again they get their ms restored to normal speed. Regions?

The easier system is to put a dummy unit with a slow aura that affects any units over bodies of water..

 

[shiFt]

How would I make it affect any units over a body of water?

 

[PurgeandFire]

You would basically do something like this:

scope WaterSlow initializer Init
globals
    private constant integer raw = 'A000'
    private unit myCaster
    private group myGroup = CreateGroup()
endglobals
native UnitAlive takes unit id returns boolean
private function SlowWaterPeople takes real x, real y returns boolean
    local unit u = GetFilterUnit()
    local real x = GetUnitX(u)
    local real y = GetUnitY(u)
    if IsTerrainPathable(x,y,PATHING_TYPE_WALKABILITY) and not IsTerrainPathable(x,y,PATHING_TYPE_AMPHIBIOUSPATHING) and UnitAlive(u) then
        call IssueTargetOrder(mydummyunitorwhatevertocastslow,"slow",u)
    endif
    set u = null
    return false
endfunction
private function Grouping takes nothing returns boolean
    if GetSpellAbilityId() == raw then
        set myCaster = GetTriggerUnit()
        call GroupEnumUnitsInRange(myGroup,GetUnitX(GetTriggerUnit()),GetUnitY(GetTriggerUnit()),500,Condition(function SlowWaterPeople))
        call GroupClear(myGroup)
    endif
    return false
endfunction
private function Init takes nothing returns nothing
    local trigger t = CreateTrigger()
    call TriggerRegisterAnyUnitEventBJ(t,EVENT_PLAYER_UNIT_SPELL_EFFECT)
    call TriggerAddCondition(t,Condition(function Grouping))
    set t = null
endfunction
endscope

Although, I just made this really quick. It is an example. Not even sure if it parses without syntax errors.

 

[ertaboy356b]

Just edit the "Target" of the "Spell" to make it work with everyone.. Put as many dummy units as needed to occupy every body of water..

 

[G00dG4m3]

you can do it in GUI:
First set point as unit's location
check if the terrain pathing 'floating' is on

 

[jig7c]

>purgeandfire
whats the purpose of this:

native UnitAlive takes unit id returns boolean

in your script?

 

[PurgeandFire]

It's just "more accurate" than GetWidgetLife(unit)>.405 supposedly. It might also be a bit faster too since it is a direct native rather than a real comparison.

You can use JASSHelper's native declarations to declare natives found in the common.ai. There are only a select few that are useful though.

 

[Magentix]

Here are some useful natives:

native GetUnitGoldCost      takes integer unitid                        returns integer
native GetUnitWoodCost      takes integer unitid                        returns integer
native GetUnitBuildTime     takes integer unitid                        returns integer
native GetUpgradeGoldCost   takes integer id                            returns integer
native GetUpgradeWoodCost   takes integer id                            returns integer
native UnitAlive            takes unit id                               returns boolean
native UnitInvis            takes unit id                               returns boolean