描述

This function can be used to get the value (either a real number or a string) from any cell within the given ds_grid. If you pass invalid grid coordinates to the function, then the value returned will be 0.

语法：

ds_grid_get(index, x, y);

返回：

Real or String

例如：

var xx, yy;
xx = irandom(ds_grid_width(grid) - 1);
yy = irandom(ds_grid_height(grid) - 1);
val = ds_grid_get(grid, xx, yy)

The above code selects a random cell from the ds_grid indexed in the variable "grid" and stores its value in the variable "val".