Terrain pathing at point - detection not working?

[Jaakko]

• (Terrain pathing at Point_Temp2 of type Walkability is off) Equal to True

Is there something wrong with this terrain condition or why do I get false from the condition every time at all points?

 

[Pharaoh_]

What do you try to detect? If the point is out of the playable map area?

 

[Jaakko]

What do you try to detect? If the point is out of the playable map area?

I would just want to get a condition that checks if a unit can walk at the point or not from the areas that are inside playable map.

 

[Pharaoh_]

Use equal to "False" to move the unit. Right now you just check if the terrain is impassable. So, in an if/then/else statement, you would move the unit in the "Else" branch. Show us the trigger you use it into.

 

[Dr Super Good]

Be aware this only checks the base pathing map. Any modifications to it via destructables and buildings are not detected by that.

 

[Jaakko]

How can I detect the whole pathing? Currently the unit goes in the middle of unwalkable terrain and gets stuck there or teleports out.

It's an ability that should work only if it is cast on walkable point.

 

[Nestharus]

This is the only one that's 100% bugless =).

http://www.hiveworkshop.com/forums/submissions-414/snippet-ispathable-199131/

 

[Jaakko]

So if I do this how do I get the boolean out? And why does the coordinate not use real?

• Custom script: call IsPathable( udg_Integer_Temp,udg_Integer_Temp2,PATH_TYPE_WALKABILITY)

 

[Nestharus]

It doesn't use a real as reals lose accuracy, but I guess it could be updated to use a real.

The boolean is returned.

 

[Jaakko]

I don't understand that part, how do I get the boolean into a condition trigger after that? Is the boolean returned as some variable?
Do I need only GetVarObject 3.0.0.5 with that? I get error //! runtextmacro LUA_FILE_HEADER() unable to find textmacro "LUA_FILE_HEADER"

 

[Dr Super Good]

The boolean is returned...
You use it the same way you use every function that returns a value. It basically acts as a boolean value.

1.
if IsPathable( udg_Integer_Temp,udg_Integer_Temp2,PATH_TYPE_WALKABILITY) then
endif
2.
local boolean b = IsPathable( udg_Integer_Temp,udg_Integer_Temp2,PATH_TYPE_WALKABILITY)
3.
set booleanvar = IsPathable( udg_Integer_Temp,udg_Integer_Temp2,PATH_TYPE_WALKABILITY)
4.
loop
exitwhen IsPathable( udg_Integer_Temp,udg_Integer_Temp2,PATH_TYPE_WALKABILITY)
endloop

Need any other examples of use?

 

[Nestharus]

I don't understand that part, how do I get the boolean into a condition trigger after that? Is the boolean returned as some variable?
Do I need only GetVarObject 3.0.0.5 with that? I get error //! runtextmacro LUA_FILE_HEADER() unable to find textmacro "LUA_FILE_HEADER"

Be sure to go through all of the requireds links. In LUA_GET_VAR_OBJECT, it says it requires things too. In LUA_FILE_HEADER, you will find a simple tutorial on running Lua scripts.


It's a bit more work than the simple cnp item libs, but it doesn't bug up in the scenarios that they bug up in and it can detect different types of pathing =). I plan on adding a couple of other pathing types to it like water ^)^.

 

[D4RK_G4ND4LF]

you can also do this in GUI if you are more familiar with it

0. Create an item

1. Every time you want to check if a point is walkable move the item there
The item will automatically snap to the next walkable point (there are some exceptions)
2. Check the distance between the item and the point you moved it to
If the distance is small enough the point is likely to be walkable

Problems:
-the item might be blocked by another item (all items in the target region could be hidden and unhidden before moving the item for checking walkability)
-this way you can't check for collision size (unless you repeat that check for some points around it which will make things rather slow)
-items are unhidden if you move them (not really a problem since you can hide them again but might be worth to mention to avoid bugs)
-the item won't snap to the nearest position if it is on a unwalkable cliff or in deep water
you can use a second item to detect such a case since it would snap to another point because the target point is occupied by the first item already
but if both points are above each other the item did not snap away and the point is unwalkable

 

[Nestharus]

Yea.


Items will only go out to a point if there is a point within 1024. Because of this, you always need to use 2 items on 2 different positions for the checking.


The comments in my script go over this procedure.

 

[Jaakko]

What is the difference between local boolean b and set booleanvar. Is b a boolean variable I can then use in gui triggers?
Does this work?

• Custom script: set udg_Boolean_Temp = IsPathable( udg_Integer_Temp,udg_Integer_Temp2,PATH_TYPE_WALKABILITY)

• If (All Conditions are True) then do (Then Actions) else do (Else Actions)
  • If - Conditions
    • Boolean_Temp Equal to False
  • Then - Actions
  • Else - Actions

Hey I copied the two other scripts and now I get this: library IsPathable uses WorldBounds - missing requirement: WorldBounds (libraries cannot require scopes)
What does that mean? I have all the 4 scripts copied in the map.

 

[Nestharus]

library IsPathable /* v1.0.1.2
*************************************************************************************
*
*   The IsTerrainPathable native does not work.
*
*   This library will also check if a point is currently pathable. Will even be
*   able to detect buildings and large clusters of units (avoids the 1024 warcraft
*   limit to pathing by checking via a loop).
*
************************************************************************************
*
*   */uses/*
*
*       */ WorldBounds /*       hiveworkshop.com/forums/jass-functions-413/snippet-worldbounds-180494/
*
************************************************************************************
*
*   constant integer PATH_TYPE_AMPHIBIOUS
*   constant integer PATH_TYPE_BLIGHT
*   constant integer PATH_TYPE_BUILDABILITY
*   constant integer PATH_TYPE_FLOATABILITY
*   constant integer PATH_TYPE_FLYABILITY
*   constant integer PATH_TYPE_WALKABILITY
*
*   function IsPathable takes integer x, integer y, integer pathingType returns boolean
*       -   i.e. call IsPathable(0,0,PATH_TYPE_AMPHIBIOUS)
*
************************************************************************************/

Notice the part that says uses =P

There is even a link =)

 

[Jaakko]

lol
Do I need this for something?

//! externalblock extension=lua ObjectMerger $FILENAME$
    //! runtextmacro LUA_FILE_HEADER()
    //! i dofile("GetVarObject")
    
    //! i local function create(id,pt)
        //! i createobject("hwtw", id)
        //! i makechange(current, "unsf", "( " .. pt .. " )")
        //! i makechange(current, "upat", "")
        //! i makechange(current, "ushb", "")
        //! i makechange(current, "uubs", "")
        //! i makechange(current, "uabr", "0")
        //! i makechange(current, "uabt", "")
        //! i makechange(current, "ucol", "16")
        //! i makechange(current, "usid", "")
        //! i makechange(current, "usin", "")
        //! i if (pt~="blighted") then
            //! i makechange(current, "upap", pt)
        //! i else
            //! i makechange(current, "upar", pt)
            //! i makechange(current, "upap", "")
        //! i end
        //! i if (pt=="unflyable") then
            //! i makechange(current, "umvt", "fly")
        //! i elseif (pt=="unamph") then
            //! i makechange(current, "umvt", "amph")
        //! i elseif (pt=="unfloat") then
            //! i makechange(current, "umvt", "float")
        //! i else
            //! i makechange(current, "umvt", "foot")
        //! i end
    //! i end
    //! i create(getvarobject("hwtw", "units", "UNITS_PATH_" .. "unflyable", true),"unflyable")
    //! i create(getvarobject("hwtw", "units", "UNITS_PATH_" .. "unamph", true),"unamph")
    //! i create(getvarobject("hwtw", "units", "UNITS_PATH_" .. "unbuildable", true),"unbuildable")
    //! i create(getvarobject("hwtw", "units", "UNITS_PATH_" .. "unwalkable", true),"unwalkable")
    //! i create(getvarobject("hwtw", "units", "UNITS_PATH_" .. "unfloat", true),"unfloat")
    //! i create(getvarobject("hwtw", "units", "UNITS_PATH_" .. "blighted", true),"blighted")
    
    //! i updateobjects()
//! endexternalblock

 

[Nestharus]

Did you read the Lua tut?

 

[Jaakko]

No, I just needed the scripts that make ispathable command work.

What is this: undeclared variable UNITS_PATH_unflyable and 5 errors for the others as well. Am is missing some unit?

 

[Nestharus]

It's probably because you deleted the LUA_FILE_HEADER script out of your map. It imports a necessary JASS script, which is why you can't delete it =).

 

[Jaakko]

I think I have them all but was it imported rightly when I copied then all in trigger editor to the first map picture trigger custom script space? I'm not sure what that icon is called up there.

 

[PurgeandFire]

The lua scripts might be confusing to implement for GUI users.

If you want a bit simpler implementation, then you can use:
http://www.wc3c.net/showthread.php?t=103862

Nes' script probably covers something that the wc3c one doesn't, but the one above will most likely handle everything you need it for. (You would have to have weird circumstances for it to bug out)

To implement it:

• Create a new trigger, name it whatever you'd like.
• Convert it to custom text, and remove all the text. Then copy the entire code from wc3c into your trigger.
• Now you are ready to use it. Here is an example of using it in GUI:
  
  • Actions
    • Set PathableLoc = Position of (Triggering Unit)
    • Custom script: set udg_IsLocPathable = IsTerrainWalkable( GetLocationX(udg_PathableLoc), GetLocationY(udg_PathableLoc))
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • IsLocPathable Equal to True
      • Then - Actions
        • ------- Do your actions if it is pathable -------
      • Else - Actions

You can change whatever "PathableLoc" is equal to. If you are using different variable names, make sure change it in the custom script as well.

Good luck.

 

[Jaakko]

http://www.wc3c.net/showthread.php?t=103862

Is there something wrong with the test map? My newgen editor can't open the file. It says main map file could not be opened. Can it check if the location is flyable too?

 

[PurgeandFire]

Yeah, the test map doesn't open. That happened to a lot of the test maps at wc3c. :\

Can it check if the location is flyable too?

I don't think it can.