Events#
Introduction#
The Events blocks in VEXcode V5 allow for event-driven coding, enabling different parts of a project to run in response to triggers such as project start, received events, or user interactions. Below is a list of available blocks:
when started – Runs the attached stack of blocks when the project starts.
when autonomous – Runs the attached stack of blocks when the Brain recieves an autonomous signal.
when driver control – Runs the attached stack of blocks when the Brain recieves a driver control signal.
when I receive event – Runs the attached stack when a specific event is broadcast.
broadcast event – Triggers an event without pausing execution.
broadcast event and wait – Triggers an event and pauses execution until the event’s tasks complete.
when started#
The when started block runs its stack when the project begins. You can have multiple when started blocks to run multiple stacks of blocks at once.
当开始
parameter |
description |
|---|---|
This block has no parameters. |
Example
当开始
[Turn around at the start of the project.]
归位至 [180] 度 ▶
when autonomous#
The when autonomous block runs the attached stack of blocks when the Brain recieves an autonomous signal.
This block is only used for Competition projects.
当自控 :: hat events
parameter |
description |
|---|---|
This block has no parameters. |
when driver control#
The when driver control block runs the attached stack of blocks when the Brain recieves a driver control signal.
This block is only used for Competition projects.
when drive control :: hat events
parameter |
description |
|---|---|
This block has no parameters. |
when I receive event#
The when I receive event block starts a stack when a matching event is broadcast. You can have multiple when I receive event blocks to run multiple stacks of blocks at once.
当我收到 [my_event v]
parameter |
description |
|---|---|
event |
The event to be triggered. Users can select an existing event, create a new one, rename the selected event, or delete it. |
Example
当开始
[Display a message and turn at the same time when the screen is pressed.]
等到 <屏幕按下了?>
广播 [turn v]
当我收到 [turn v]
在屏幕上打印 [Received!]▶
[右 v] 转 [90] 度 ▶
broadcast event#
The broadcast event block triggers any matching when I receive event hat block. It does not pause the execution of the stack and continues running the next block immediately.
广播 [message1 v]
parameter |
description |
|---|---|
event |
The event to trigger. Users can select an existing event, create a new one, rename the selected event, or delete it. |
Example
当开始
[Turn left when the screen is pressed.]
永久循环
如果 <屏幕按下了?> 那么
广播 [screen_press v]
否则
[右 v] 转
当我收到 [screen_press v]
[左 v] 转
broadcast event and wait#
The broadcast event and wait block triggers an event, then pauses execution of the current stack until all triggered when I receive event block stacks have completed.
广播 [message1 v] 并等待
parameter |
description |
|---|---|
event |
The event to trigger. Users can select an existing event, create a new one, rename the selected event, or delete it. |
Example
当开始
[Move after the Brain's screen is pressed.]
等到 <屏幕按下了?>
广播 [forward_and_turn v] 并等待
在屏幕上打印 [Movement done.]▶
当我收到 [forward_and_turn v]
驱动 [向前 v] [100] [毫米 v] ▶
[右 v] 转 [90] 度 ▶