hmHeight returns 0 and bad collision with terrain

kulesz · 09-20-2011 06:31 PM

Hi,

Todays morning I broke something in my code and I can't find what :-P
The ray collisions with the terrain works (plane and position of collision is calculated properly), but the actor group is constantly 0 (should be 31, as it is collision with terrain). Also, returning height with Game::World.hmHeight always returns 0 :-/

Any idea, what may be broken?

kulesz · 09-21-2011 06:40 PM

Could it have something to do with area states? World is set to MANUAL and all checked areas are ACTIVE.

kulesz · 09-24-2011 10:30 AM

Still nothing, I'm generating terrain with:

Code:

Mesh * mesh = new Mesh;

PhysBody * body = new PhysBody;

Edit::Heightmap * l = chunks[x - 1][z];

Edit::Heightmap * r = chunks[x + 1][z];

Edit::Heightmap * b = chunks[x][z - 1];

Edit::Heightmap * f = chunks[x][z + 1];

Edit::Heightmap * lb = chunks[x - 1][z - 1];

Edit::Heightmap * lf = chunks[x - 1][z + 1];

Edit::Heightmap * rb = chunks[x + 1][z - 1];

Edit::Heightmap * rf = chunks[x + 1][z + 1];

chunks[x][z]->create(33, 0, Materials.ptrRequire("mtrl/grass/Grass0027_13_S.mtrl"), true, l, r, b, f, lb, lf, rb, rf);

for (int xx=0; xx<33; x++)

    for (int yy=0; yy<33; y++)

        chunks[x][z]->height(xx,yy, GetHeight());

chunks[x][z]->build(*mesh, 0, 20, true, l, r, b, f, lb, lf, rb, rf);

mesh->scaleMove(Vec(128, 128, 128), Vec(128 * x, 0, 128 * z));

body->parts.New().createMesh(*mesh);

if (Game::World.areaActive(VecI2(x, z)))

{

    Memc<Game::WorldManager::AreaState> area_states;

    area_states.New().set(VecI2(x, z), Game::AREA_ACTIVE);

    Game::World.areaSetState(area_states);

}

Game::World.areaLoaded(VecI2(x, z))->getData();

Game::World.areaLoaded(VecI2(x, z))->data()->mshg.meshes(0).create(*mesh);

Game::World.areaLoaded(VecI2(x, z))->data()->phys() = *body;

Game::World.areaLoaded(VecI2(x, z))->data()->actor().create(*body);

mesh->del();

body->del();

and test collisions with

Code:

SetMatrix(MatrixIdentity);

C OrientP &hand_r = Players[0].cskel.getPoint("head");

// just some forward looking vector from player's head

Vec start = Players[0].cskel.getPoint("head").pos + 0.45 * Players[0].cskel.getPoint("head").dir;

Vec end = start + 6 *Players[0].cskel.getPoint("head").dir;

if(Physics.ray(start, end-start, &phys_hit))

{

    Ball(0.3, phys_hit.plane.pos).draw(BLACK);

    Flt h = Game::World.hmHeight(phys_hit.plane.pos.x, phys_hit.plane.pos.z);

}

Both values of "h" and "phys_his.plane.pos.y" are 0 :-/

phys_his.plane.pos x and z values are correct...

**Esenthel** · 09-24-2011 10:41 AM

Hmheight is based on game area data heightmap image which you're not setting
Your codes are incorrect, memory leaks, creating actor from physical body you later delete

kulesz · 09-24-2011 10:59 AM

(09-24-2011 10:41 AM)Esenthel Wrote: Hmheight is bass on game area data heightmap image which you're not.setting
Your codes are incorrect, memory leaks, creating actor from physical body you later delete

How to set a game area data heightmap?
And I guess I can't do

Code:

mesh->del();

body->del();

but I need to store them?

And where are the leaks, can't see any :-)

**Esenthel** · 09-24-2011 11:19 AM

Game::Area::Data::height

Mesh * mesh = new Mesh;
PhysBody * body = new PhysBody;
where is delete?

from phys body.h:
Physical Bodies of Convex or Mesh type may not be deleted manually when there are still actors using the body.
This means that the Physical Body may be deleted only after deleting all actors using the body.

kulesz · 09-24-2011 11:49 AM

But Game::Area::Data::height is of Image type, and my heightmaps are Edit::Heightmap type. Can't find any method to fill the first one with the second one.

So, when I create body, I can't delete it as long as my game area actor is using it? OK.

(09-24-2011 11:19 AM)Esenthel Wrote: Mesh * mesh = new Mesh;
PhysBody * body = new PhysBody;
where is delete?

Last two lines. But body deletion shouldn't be there, as far as I know now.

kulesz · 09-25-2011 01:48 PM

How to fill the Game::Area::Data::height with the data from Edit::heightmap?

**Esenthel** · 09-26-2011 11:22 AM

Image::pixelF

kulesz · 09-26-2011 08:27 PM

Thanks. For some reason, during collisions group isn't detected as 31 (terrain), I had to set it manually.
Using pixelF doesn't help, hmheight still returns 0 ;-/

Code:

for (int x = 0; x <= heightmapResolution - 1; x++)

        for (int y = 0; y <= heightmapResolution - 1; y++)

            Game::World.areaLoaded(VecI2(c_x, c_z))->data()->height().pixelF(x, y, heightmap->height(x, y));

Heights in heightmap are in 0..1 range.

**Esenthel** · 09-27-2011 12:15 PM

Code:

mesh->del();

body->del();

this is not to be used with c++ 'new'

also: Image::createSoft(res, res, IMAGE_F32)

hmHeight returns 0 and bad collision with terrain
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