[Misiur]

pawn Код:

printf("range check");

This line completely changes your code flow, remove it or move it.

You need an else clause. Learn to use it

pawn Код:

if(dooropen == 0)
{
    printf("door open = %d", dooropen);
    MoveDynamicObject(chaindoor,321.45309, 310.08768, 998.14099,1.0,0,0,-90);
    printf("objectid = %d", chaindoor);
    printf("object moved");
    dooropen = 1;
    printf("door open = %d", dooropen);
} else {
    printf("door open = %d", dooropen);
    MoveDynamicObject(chaindoor,321.45309, 310.08768, 998.14099,1.0,0,0,360);
    dooropen = 0;
}

https://sampwiki.blast.hk/wiki/Control_Structures#else