[SOLVED] NavigationMesh/PathRoute problem

[Igor_de]

Hi,

 

I'm trying to create a route2D and app crashes. Reproduced on the world samples/path/mesh00, just unzip in "samples/path/" and uncomment lines. Call stack application attached. Used Unigine source SDK-2012-09-07.paths.zip

[frustum]

Please patch the source/engine/game/navigations/NavigationMesh.cpp file at 1399 line:

 

from:

// nodes
node->nodes.resize(nodes.size());
node->npolygons.resize(npolygons.size());
Math::memcpy(node->nodes.get(),nodes.get(),sizeof(Node) * nodes.size());
Math::memcpy(node->npolygons.get(),npolygons.get(),sizeof(int) * npolygons.size());

 

to:

// nodes
node->nodes.resize(nodes.size());
Math::memcpy(node->nodes.get(),nodes.get(),sizeof(Node) * nodes.size());

// node polygons
node->npolygons.resize(npolygons.size());
for(int i = 0; i < npolygons.size(); i++) {
	node->npolygons[i] = node->polygons.get() + (int)(npolygons[i] - polygons.get());
}

 

And change 38 line at your sample:

add_editor(node);
//	engine.editor.addNode(node);

[Igor_de]

Thank. Now works correctly.

[craig.biggs_]

For users who don't have a source version of the SDK, when is a patched binary version going to be available/new SDK available with this fix in it? This crash is currently blocking our development.

[manguste]

ETA is in a week or around so.

[binstream]

We can also suggest upgrade to the full source SDK so we'll be able to send you hotfixes faster. Moreover you'll get more control over the technology, if you need some deep modifications.

[Igor_de]

In SDK-2013-06-07, same problem, can not create path and app crash when reload world. In another scene, path finded but Z = -5 in path point always.

[silent]

Hi,

 

Could you please provide simple test scene? I've tried to reproduce such behavior on test scene from first post, but wolrd_reload command is working fine. Please, check the attached zip file.

 

Thanks!

path_updated.zip

[Igor_de]

On path_updated can not reproduce.

Download and install https://developer.unigine.com/fileserver/download/sdk/UnigineSDK_source_2013-06-07_windows.exe , download first attachment and extract without replace files in sub dirs: common, meshes, nodes.

What about "PathRoute failed"?

[silent]

I've tried your sample and my updated sample on the old SDK version (2012-10-19, with NavigationMesh.cpp fix) and I get "PathRoute failed" here too. 

 

Path updated sample is the same sample, but with edited mesh_00.cpp file on line 38: I've replaced engine.editor.addNode(node); to add_editor(node).

[Igor_de]

Ok, add_editor is my mistake.

About Z = -5, "This upload failed" so check mesh_00.cpp in post.

Result:

p0 inside:1

p1 inside:1

point0: 68.09 77.45 -5.00

point1: 69.42 85.92 -5.00

#include <samples/paths/common/paths.h>

Navigation navigations[0];
Vec3 offset = Vec3(0.0f,0.0f,0.0f);

void update_scene() {
    engine.world.updateSpatial();
    
    PathRoute route = new PathRoute(0.5f);
    
//    Vec3 p0 = Vec3(0.0f,6.0f,26.5f) + offset;
//    Vec3 p1 = Vec3(9.25f,4.36f,26.5f) + offset;
    Vec3 p0 =  Vec3(68.09, 77.45, 3.86) + offset;
    Vec3 p1 =  Vec3(69.42, 85.92, 3.86) + offset;

    log.message("update scene\n");
    
    while(1) {        
        foreach(Navigation n; navigations) {
            n.renderVisualizer();
            engine.message(" p0 inside:%i",n.inside2D(p0, 1.0f));
            engine.message(" p1 inside:%i",n.inside2D(p1, 1.0f));
        }
        
        route.create2D(p0,p1);
        if(route.isReached()) {
            route.renderVisualizer(vec4_one);
            forloop(int i = 0; route.getNumPoints()) {
                vec3 point = route.getPoint(i);
                log.message("point%i: %.2f %.2f %.2f\n", i, point.x, point.y, point.z);
            }
        }
        else {
            engine.message("PathRoute failed\n");
        }
        
        wait;
    }
    
}

void create_scene() {    
    Node node = node_cast(node_append(engine.world.loadNode("samples/paths/nodes/terra_test.n")));
    node.setPosition(vec3(0.0f,0.0f,0.0f));
    int index = node.findChild("navigation_mesh");
    assert(index != -1);
    NavigationMesh navigation = node_cast(node.getChild(index));
    add_editor(node);
    //engine.editor.addNode(node);
    navigations.append(navigation);
    
    return "PathRoute2D in single NavigationMesh";
}

[silent]

Great, thanks!

 

I've passed this information to the developers. 

[silent]

Hi,

 

Your mesh minimum Z coordinate is -5, maximum +5, so as a result if you trying to navigate on this mesh on it's bottom side you will get Z = -5, on top side you will get Z = 5. This behavior is absolutely correct.

 

Also, this behavior is absolutely identical to the old SDK version (2012-10-19, with NavigationMesh.cpp fix).

 

Thanks!

[Igor_de]

Destination point Vec3(69.42, 85.92, 3.86), why -5 is correct? After update meshes and nodes on test scene all finding good, but on work world other behavior. I will try to reproduce the test scene.

[frustum]

This is 2D navigation on mesh.

[Igor_de]

Add offset(0, 0, 0.1) to points when create2D path, and got the desired behavior.