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Dumping world mesh into .obj files - inverted X and Z axis

Hi,

I'm not sure if you are aware of this, but in Gothic .zen file for some reason the vertices in world mesh are stored in a funny order, that is: Z, Y, X. Therefore, when you dump world mesh inso .obj file you must consider that when writing v ... ... ... line to the file.

So here:

phoenix-studio/src/cli/zmodel/main.cc

Line 83 in 584e170

out << "v " << item.x << " " << item.y << " " << item.z << "\n";

it should rather be out << "v " << item.z << " " << item.y << " " << item.x << "\n";,
but only in case if we are dealing with world mesh. (I think other meshes have the proper order)

The world mesh .obj file rendered currently:
image
as you can see the world looks as if seen in a mirror - things that should be on the left side are on the right. Moreover, both the normal vectors (the vn ... ... lines in .obj) and texture coordinates (the vt ... ... lines) seem to be defined with the above assumptions regarding the vertice orders. Hence, you can notice some strange artifacts when rendering, like objects being seen through, objects being lit on the bottom even though I set a source of directional sun light from above the scene, etc.

Here is how the .obj file is rendered after making the change in the source code:
image
looks correct.

Cheers :)

[zscript] Decompiler does not correctly handle `if ... else` with nested `if`s

Originally mentioned by @auronen in the GMC Discord (also see auronen/DecDat#2).

Original

func void B_SetNpcVisual (var C_NPC slf, var int gender, var string headMesh, var int faceTex, var int bodyTex, var int armorInstance)
{
	slf.aivar[AIV_Gender] = gender;

	Mdl_SetVisual (slf,"HUMANS.MDS");

	if (gender == MALE)
	{
               Mdl_SetVisualBody (slf,	"hum_body_Naked0", 	bodyTex,	0,			headMesh, 	faceTex,	0, 			armorInstance);
		
		if (slf.attribute[ATR_STRENGTH] < 50)
		{
			Mdl_SetModelScale		(slf, 0.9, 1, 1); 			//BREITE / Höhe / Tiefe
		};

		if (slf.attribute[ATR_STRENGTH] > 100)
		{
			Mdl_SetModelScale		(slf, 1.1, 1, 1);			//BREITE / Höhe / Tiefe
		};
	}
	else //gender == FEMALE
	{
		if (bodyTex >= 0) && (bodyTex <= 3) //MännerBodyTex angegeben
		{
			bodyTex = bodyTex + 4; // Females haben Variation 4-7 (Males 0-3)
		};
		Mdl_SetVisualBody (slf,	"Hum_Body_Babe0", 	bodyTex,	0,			headMesh, 	faceTex,  	0,			armorInstance);
	};
};

Decompiled

func void B_SETNPCVISUAL(var C_NPC SLF, var int GENDER, var string HEADMESH, var int FACETEX, var int BODYTEX, var int ARMORINSTANCE) {
    SLF.AIVAR[17] = GENDER;
    MDL_SETVISUAL(SLF, "HUMANS.MDS");
    if ((GENDER) == (MALE)) {
        MDL_SETVISUALBODY(SLF, "hum_body_Naked0", BODYTEX, 0, HEADMESH, FACETEX, 0, ARMORINSTANCE);
        if ((SLF.ATTRIBUTE[4]) < (50)) {
            MDL_SETMODELSCALE(SLF, 1063675494, 1065353216, 1065353216);
        };
        if ((SLF.ATTRIBUTE[4]) > (100)) {
            MDL_SETMODELSCALE(SLF, 1066192077, 1065353216, 1065353216);
        };
    };

    // -----------------------------------------------------
    if (((BODYTEX) >= (0)) && ((BODYTEX) <= (3))) {
        BODYTEX = (BODYTEX) + (4);
    };
    MDL_SETVISUALBODY(SLF, "Hum_Body_Babe0", BODYTEX, 0, HEADMESH, FACETEX, 0, ARMORINSTANCE);
}

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