ds_grid_find_value_arr

/// @func ds_grid_find_value_arr
/// @arg {grid} id
/// @arg {any} value
/// @desc Returns an array containing an array for each x/y position the target value was found in the grid.

var _id = argument[0];
var _value = argument[1];

var _resultArr = [];
var _fndCnt = 0;

if (!ds_exists(_id,ds_type_grid)){
    return -1;
}

var _gridW = ds_grid_width(_id);
var _gridH = ds_grid_height(_id);

if (!ds_grid_value_exists(_id,0,0,_gridW - 1,_gridH - 1,_value)){
    return _resultArr;
}

for (var _yy = 0; _yy < _gridH; _yy++){
    if (ds_grid_get_max(_id,0,_yy,_gridW - 1,_yy) == 0 && _value > 0){ // Skip row
        continue;
    }
    for (var _xx = 0; _xx < _gridW; _xx++){
        if (_id[# _xx, _yy] == _value){
            _resultArr[_fndCnt] = [_xx, _yy];
            _fndCnt++;
        }
    }
}

return _resultArr;