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Docs/docs/zh/beamng/dev/modding/ui-apps.md
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# 图形界面-应用程序 创建
为了制作一个图形界面应用程序你需要一些AngularJS框架的知识主要的文档可以在这里找到: [AngularJS docs](https://docs.angularjs.org/guide)
## 文件结构
一个图形界面应用程序需要四个重要的文件才能工作:
- app.js | 包含图形界面应用程序使用的主要代码 [Javascript docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript)
- app.html | 显示应用程序的代码 [Html docs](https://developer.mozilla.org/fr/docs/Web/HTML)
- app.json | 包含图形界面应用程序的信息
- app.png | 显示在应用程序选择器中的图像文件
### 图形界面应用程序 样式
我们建议使用 `<style>` 标签来设置应用的样式, a .css 文件会工作,但您将无法实时看到更改。
## 范例
这个例子来自DanielW感谢他
ui\modules\apps\ExampleApp\app.html
```html
<div style="width: 100%; height: 100%;" class="bngApp">
<link type="text/css" rel="stylesheet" href="/ui/modules/apps/ExampleApp/app.css" />
<div id="exampleAppContainer">
<span>Gear: <span>{{ gearName }}</span></span>
<div layout="row" layout-align="center center">
<md-input-container flex>
<label>Input</label>
<input ng-model="message" ng-keydown="sendMessage($event)">
</md-input-container>
<md-button md-no-ink class="md-warn" ng-disabled="!message" ng-click="sendMessage()">Send</md-button>
</div>
<span style="display: block">Messages:</span>
<!-- Scroll Area -->
<ul bng-nav-scroll style="margin: 0; padding: 0; overflow-y: auto; width: 100%; height: 100%; background-color: #37373740;">
<!-- Iterate over the messages and display them -->
<li ng-repeat="message in messages track by $index" style="display: flex; align-items: center; height: 35px;">
<span style="padding: 0 0.2em; width: 100%;">{{ message }}</span>
<!-- Button to delete the message, this calls the `deleteMessage` function in `app.js` -->
<md-button md-no-ink class="md-icon-button md-warn" ng-click="deleteMessage($index)">
<md-icon class="material-icons">delete</md-icon>
</md-button>
</li>
</ul>
</div>
</div>
```
在这里, 你可以看到一个 `<span>` 显示车辆挡位的标签, 用于将消息发送给 `sendMessage()`函数和一个重复的`<li>`标签在Javascript中的`messages`变量上使用<b>ng-repeat</b>
ui\modules\apps\ExampleApp\app.js
```js
angular.module('beamng.apps')
.directive('exampleApp', [function() {
return {
templateUrl: '/ui/modules/apps/ExampleApp/app.html',
replace: true,
restrict: 'EA',
scope: true,
controller: ['$scope', function($scope) {
$scope.gearName = '0'
$scope.message = ''
$scope.messages = []
// Setup the streams we want. For now, we only want the engine information. You can add more, you'll just have to look around to find the different streams
let steamList = ['engineInfo']
StreamsManager.add(steamList)
$scope.$on('destroy', function() {
StreamsManager.remove(steamList)
})
// Do I even need to put this comment here explaining what this function does?
// Well, I have done it for a lot of other things when they weren't needed. I'll leave this one be...
$scope.$on('streamsUpdate', function(event, streams) {
if (!streams.engineInfo) // Early return... You probably noticed that without this useless comment though
return;
// `lua/vehicle/controller/vehicleController.lua:538` (or use console.log)
let gear = streams.engineInfo[5]
// Update the gear name in HTML if needed
if ($scope.gearName !== gear)
$scope.gearName = gear
})
$scope.sendMessage = function(event) {
if (event && event.key !== 'Enter')
return
if ($scope.message == '')
return
// Forward the message to the Lua extension to modify it
bngApi.engineLua('extensions.exampleMod.modifyMessage("' + $scope.message + '")')
$scope.message = ''
}
$scope.deleteMessage = function(idx) {
$scope.messages.splice(idx, 1)
}
// The `modifyMessage` function will call this hook with the modified data
$scope.$on('MessageReady', function(_, modifiedMessage) {
$scope.messages.push(modifiedMessage)
});
}]
}
}])
```
注意<b>$scope{/b0}的用法。这是非常重要的,因为你需要在{b1}$作用域</b>中定义变量和函数,以便能够从<b>ng-*</b>标签中的<b>Html</b>中访问它。所以在这个例子中,在<b>Html</b>中执行`sendMessage()`函数后它将把它发送到mod的extensions目录中的lua文件中并在这个lua文件中执行`modifyMessage()`函数。
下面是lua的一个例子
```lua
local function modifyMessage(message)
message = message .. " [Modified!]"
guihooks.trigger('MessageReady', message)
end
```
^这是lua的一个简化版本只是为了展示函数
这里主要关注的是<b>基钩子的使用。触发器</b>触发一个用`$scope.$on()`定义的AngularJS事件。正如您在Javascript文件的最底部看到的那样该事件被命名为MessageReady并将由<b>guihook执行。用消息有效负载触发</b>函数,然后将被推入`$范围。在<b data-md-type="raw_html">Html</b>文件中使用<b data-md-type="raw_html">ng-repeat</b>来显示li标签中的messages`变量
完整的lua文件就在下面
lua\ge\extensions\exampleMod.lua
```lua
local M = {}
--[[
This is the entry point of our extension, this is what the game loads from our `modScript.lua`.
In the modScript file, you can load more extensions and put them in the same directory as this file.
In this file, we will communicate with the following:
1. Our vehicle extension. That extension tells this extension when to send it data, and we send it. Take a look at `vehicle/extensions/auto/exampleVehicleExtension.lua`
2. Input. Take a look at `core/input/actions/myActions.json`. When the bounded key is pressed, it will call `onActionKeyDown` (a function we export below)
]]
-- Game Function Hooks
--------------------------------------------
local function onExtensionLoaded()
log('D', "onExtensionLoaded", "Called")
end
local function onExtensionUnloaded()
log('D', "onExtensionUnloaded", "Called")
end
-- Custom Functions
--------------------------------------------
local function onActionKeyDown()
log('D', "onActionKeyDown", "Pressed!")
end
local function onVehicleExtensionLoaded(vehID)
log('D', "onVehicleExtensionLoaded", "Sending some data to the vehicle")
local veh = be:getObjectByID(vehID) -- If you don't have the ID, you can also use `be:getPlayerVehicle(0)` to get the current vehicle.
if not veh then return end -- The usual error checking
local data = {
["name"] = "Daniel W"
}
veh:queueLuaCommand("extensions.exampleVehicleExtension.onDataReceived('" .. jsonEncode(data) .. "')")
end
local function modifyMessage(message)
message = message .. " [Modified!]"
guihooks.trigger('MessageReady', message)
end
-- Export Interface
--------------------------------------------
M.onExtensionLoaded = onExtensionLoaded
M.onExtensionUnloaded = onExtensionUnloaded
M.onActionKeyDown = onActionKeyDown
M.onVehicleExtensionLoaded = onVehicleExtensionLoaded
M.modifyMessage = modifyMessage
--[[ Other functions could include:
- onPreRender(dtReal, dtSim, dtRaw)
- onUpdate(dtReal, dtSim, dtRaw)
- onClientPreStartMission(levelPath)
- onClientPostStartMission(levelPath)
To find all of these, search the following in `BeamNG.Drive/lua`: `extensions.hook(`
--]]
return M
```
请注意返回包含所需函数的M模块变量非常重要例如如果没有`M。modifyMessage = modifyMessage`行,`bngApi.engineLua(extensions.exampleMod. modifyMessage' + $scope. 'message + ' ') ')`函数将无法找到modifyMessage函数
ui\modules\apps\ExampleApp\app.css
```css
#exampleAppContainer {
width: 100%;
height: 100%;
display: flex;
flex-direction: column;
align-items: center;
align-content: center;
}
#exampleAppContainer > * {
margin: 0;
padding: 0;
}
```
ui\modules\apps\ExampleApp\app.json
```json
{
"domElement": "<example-app></example-app>",
"name": "Example App",
"types": [
"ui.apps.categories.debug"
],
"description": "example-app",
"css": {
"left": "0px",
"height": "auto",
"width": "270px",
"min-width": "200px",
"min-height": "90px",
"top": "0px"
},
"author": "Daniel W",
"version": "0.1",
"directive": "exampleApp"
}
```
该指令需要与<b>Javascript</b>文件中的指令相同
# 车祸模拟器为图形界面应用程序提供的Javascript函数
```js
bngApi.engineLua("lua_path.function()")
```
用于运行带或不带参数的lua函数
# 车祸模拟器为图形界面应用程序提供的Lua函数
```lua
guihooks.trigger("EventName", Payload)
```
有效载荷可以是任何类型,但最好将其保留为数组/对象或字符串,以免丢失。
<b>IMPORTANT</b>有时候你使用的事件名称可能已经在内部被其他东西使用了从而导致问题因此如果你的应用名为Nickel那么最好将你的每个Angular事件命名为NKEventName而不是EventName