Zho:舞台

The Stage is the term for the background of the 专案, but can have 程式, 背景 (costumes), and 音效, similar to a 角色. It has some restrictions of sprite functionality, such as motion and size 积木.

No sprites can move behind the Stage the Stage is always at the back layer.

与角色的差异处
There are many differences between the Stage and other sprites. These include the following:
 * Is stationary thus,
 * Cannot use 动作类积木
 * Cannot use any 画笔 functions, other than 笔迹清除
 * Has no size blocks
 * Has no "touching" blocks in the 侦测类积木 category
 * Has no "distance to" block in the Sensing category
 * Cannot talk thus
 * Has no "Say" or "Think" blocks in the 外观类积木 category
 * When 询问 并等待, places the question above the text box rather than in a speech bubble.


 * Has backdrops instead of costumes
 * Cannot be renamed
 * Has no "show" or "hide" blocks in the Looks category
 * Cannot change layers it is always at the very back layer.
 * Must have a 480x360 dimension
 * Space in backgrounds left transparent becomes white automatically

编写程式
The Stage field has a scripts tab that can be used in the same way as in a sprite, with the following exceptions: This field is optional.
 * The 动作类积木, say, think,, , 造型, 尺寸, layer, 造型编号, 画笔类积木 (except ), , , touching, and blocks cannot be used.
 * The, , and 背景编号 blocks are only for the Stage.

There is also a backdrops tab that can be used to add, delete, and edit backdrops. This field is required, and you cannot delete a backdrop when it's the only one. The dimensions are always 480x360. Transparent areas automatically become white in the project.

The optional sounds tab is identical to the sounds tab in sprites.

舞台尺寸
The stage can be 3 different sizes:
 * Regular
 * Normal mode; the Stage is 480x360 pixels


 * Small Stage Layout


 * The stage is half the size with a resolution of 240x180 pixels; this is useful for having more room in the scripts area.


 * Full-screen mode


 * fits the player to one's web browser's current resolution

历史
Originally the Stage was included as another sprite in the sprite corral (now the 角色面板) and called the "Background".

The Stage was introduced in Scratch 0.2.

参见

 * 背景
 * 全屏显示
 * 小舞台版面
 * 角色