Zho:随机取数 () 到 ()（积木）

The Pick Random to  积木 is an 运算类积木 and a 椭圆形积木. The block picks a pseudorandom number ranging from the first given number to the second, including both endpoints. If both numbers have no decimals, it will report a whole number. For example, if a 1 and a 3 were inputed, the block could return a 1, 2 or 3. If one of the numbers has a decimal point, even .0, it reports a number with a decimal. For example, if 0.1 and 0.14 were given, the output will be 0.1, 0.11, 0.12, 0.13, or 0.14.

The numbers given with this block are not truly random they are merely unpredictable. It is nearly impossible to generate truly random numbers using a computer.

历史
In the 实验查看器, the block had a picture of a die on it.

用法示例
In many types of 专案, random numbers must be picked this block will easily do the job, without any complicated scripts.

Some common uses for the Pick Random to  block: 當收到訊息 [generate v] 定位到 x: (-50) y: (50) 變數 [square v] 設為 [1] 重複 (121) 次 替換第 (square) 項於 [level v] 成 (隨機取數 (1) 到 (10)) 變數 [square v] 改變 (1) end 變數 [square v] 設為 [1] 重複 (11) 次 重複 (11) 次 造型換成 (清單第 (square) 項項目\( [level v] \) :: list) 蓋章 x 改變 (10) 變數 [square v] 改變 (1) end 定位到 x: (-50) y: ((y 座標) - (10)) end 重複直到 <<(清單第 (start) 項項目\( [level v] \) :: list) = [10]> 不成立> 變數 [start v] 設為 (隨機取數 (1) 到 (121)) end 造型換成 [player v] 變數 [square v] 設為 [1] 定位到 x: (-50) y: (50) 重複直到 <(square) = (start)> 如果 <(x座標) = [50]> 那麼 定位到 x: (-50) y: ((y 座標) - (10)) x 改變 (10) end 變數 [square v] 改變 (1) end 廣播訊息 [play v] 變數 [hp v] 設為 (隨機取數 (25) 到 (100)) 變數 [purchase v] 設為 (清單第 (隨機取數 (1) 到 (9)) 項項目\( [grocery list v] \) :: list) 造型換成 (隨機取數 (1) 到 (7))
 * Creating randomized levels
 * Setting random stats
 * Choosing random objects
 * Setting a 角色 to a random 造型

应用
To work around this block, the Scratcher must program a 程式 that will give unpredictable numbers.

A simple workaround is to fill a 清单 with the possible numbers, and then use the 清单第 项项目 block with the first input set to any. The Item (any) of  block chooses an unpredictable item  so if the chosen list has all the wanted numbers, the Item  of  block is an effective workaround:

當 @greenflag 被點擊 變數 [random number v] 設為 (清單第 (年 v) 項項目\( [list v] \) :: list)

There are scripts that can pick unpredictable numbers without using any blocks that give random values. To make these scripts, a value must be used that is unpredictable the 计时器 is a very good choice. Other choices are: Then a script can be created with the value an example with a continuously moving sprite: 變數 [random number v] 設為 (x 座標) This, however, is rather simple. More complicated scripts can be made: 變數 [random number v] 設為 ((x座標) + (y 座標)) 變數 [random number v] 設為 (四捨五入數值 (((y 座標) + ((方向) * (2))) / (3)))
 * Continuously moving a hidden sprite around the screen and using its location
 * Continuously changing a 变量 and using its current value
 * Continuously changing the pen color, shade or size and using its value