fn_vEngine pseudocode

void engine() {

    activeCamera = CAM_fn_hGetActiveCamera(0);
    targetedSuperObject = CAM_fn_hCineInfoGetSuperObjectTargeted(*(*(*(activeCamera + 4))));

    treatDynamicHierarchyOfPlatforms(gp_stDynamicWorld);
    treatDynamicHierarchy(gp_stDynamicWorld, targetedSuperObject, targetedSuperObject.matrix.position);
}

void treatDynamicHierarchyOfPlatforms(superobject * spo) {

    targeted = null;
    activeCam = CAM_fn_hGetActiveCamera(0);
    if (activeCam) {
        targeted = CAM_fn_hCineInfoGetSuperObjectTargeted(*(*(*(activeCam + 4) + 16) + 4));
    }

    pushMatrix(spo);

    foreach(child in spo.children) {

        if (child.type == perso) {

            stdGame = child.pero.stdGame;
            // field_0x29 bit ? set AND (engine not frozen OR bit 0 of field_0x20 set)
            if ( (*(stdGame + 41) & 4) == 4 && (!engineIsFrozen || *(stdGame + 32) == 0x100000) ) {

                if (!stdGame.isPlatform) {
                    popMatrix();
                    return;
                }

                if (stdGame.field_0x14 != someEngineDWord) {
                    if (child == targeted) {
                        stdGame.field_0x29 &= 0x7FU; // unset bit 0 of field_0x29;
                    } else if ((&loc_4BFFFC + 4) & *(stdGame + 32)) { // too far or something
                    updateTooFarFlag()
                }

                pushMatrix(child);
                treatCharactersInSector(child);
                popMatrix();

            }

        }
    }

    popMatrix(spo);
}

void treatDynamicHierarchy(superobject * spo, superobject * targetedSpo, Vector3 * vector) {

    // Sector
    if (spo.type != perso) {
        pushMatrix(spo);

            foreach(child in spo.children) {
                if (child.type == perso && !child.isCamera)
                treatDynamicHierarchy(child);
            }

        popmatrix();
    } else {

        perso = spo.data;
        stdGame = perso.stdGame; // field_0x28

        if (!stdGame) {
            return;
        }

        if (!stdGame.isPlatform) {

            pushMatrix(spo);

            // engine not frozen OR bit 0 of field_0x20 set
            if (!engineIsFrozen || stdGame.field_0x20 & 0x100000) {

                if (perso == targetedSpo) {
                    stdGame.field_0x29 &= 0x7FU; // unset bit 0 of field_0x29
                } else if ((&loc_4BFFFC + 4) & *(stdGame + 32)) { // too far or something
                    updateTooFarFlag()
                }

                treatCharactersInSector(spo);
            }

            // IF RAYMAN 3
            popMatrix()
            pushMatrix(spo);

            if (spo == mainCharacter) {

                foreach(child in spo.children) {
                    if (child.type == perso && !child.isCameraamera)
                    treatDynamicHierarchy(child);
                }

            }

            // ENDIF RAYMAN 3

            popMatrix();
        } else {

            pushMatrix(spo);

            foreach(child in spo.children) {
                if (child.type == perso && !child.isCamera)
                treatDynamicHierarchy(child);
            }

            popMatrix();
        }
    }
}