Terrain FindChild problem

[Stevenson]

Hello,

i was playing arround a little bit with C++, and i had problems with selecting the terrain.

This is my code:

TEntity cScene = LoadScene("abstract::test2.sbx");
ScaleEntity(FindChild(cScene,"Terrain"), Vec3(1,1,1));

 

Does some one know, what is my problem?

 

greats

[Canardia]

I think FindChild is looking for the "name" key, and not the "class" key.

GameLib gets the terrain entity correctly by looking for "class"=="Terrain".

If you don't want to use GameLib, you could just copy the function GetFirstEntityByKey(key,value) from it, and use it as: terrain = GetFirstEntityByKey("class","Terrain");.

[Stevenson]

Hello,

were i can find GetFirstEntityByKey ?

I am unable to find it in the c++ files.

 

greats

[Stevenson]

Ok,

i found a solution:

TEntity cScene = LoadScene("abstract::test2.sbx");
int cTerrainChildCount = CountChildren(cScene);
TTerrain cTarrain = (TTerrain)GetChild(cScene,cTerrainChildCount);

 

Thanks!

 

greats

[Masterxilo]

How can you be sure that the terrain is always the last child?

[Stevenson]

I Also thought about that,

but every time when i test it, it was the last chil.

 

But, i have one more question, why does this two ways to get the terrain height doesn´t work:

First Way:

VObject::kiObject->Y = TerrainHeight(cTerrain, kiObject->X*2,kiObject->Y*2); // 2 is the Meter per tile

 

Second way:

	if(LinePick(&cPick, Vec3(kiObject->X,kiObject->Y,kiObject->Z), Vec3(kiObject->X,kiObject->Y-10,kiObject->Z), 5))
	{
		kiObject->Y = cPick.Y;
		std::cout << cPick.Y << std::endl;
	}

 

Can some one help me?

 

 

greats

[Masterxilo]

The first way doesn't work because you use y as the z position, I think it should be:

VObject::kiObject->Y = TerrainHeight(cTerrain, kiObject->X*2,kiObject->Z*2); // 2 is the Meter per tile

 

and for the second way: make sure you use 0 as the pick radius, anything else doesn't work. (set your 5 to 0)

[Stevenson]

Oh, i am so stupid

 

PS.: It is also wrong in the Wiki: C++: flt Terrain::GetHeight( int x, int y ) const

 

EDIT: Now every thing work fine:

VObject::kiObject->Y = TerrainElevation(cTerrain, kiObject->X,kiObject->Z)

 

greats

[Masterxilo]

It's not wrong in the wiki, if there are only two axis (like, for example on a plane) they're always called x, y.

It's just confusing because the terrain actually lies in the xz plane.