仿照Elm, Halogen那样抽象事件，数据和渲染。
Mobx + Cocos2d 加了一个todo样例
- Diff示例, list的数据渲染
- Action State Props细化
- 父子组件交互问题
- 使用mobx管理状态, 感觉比rxjs更舒服好用,
- 自己定义action配合ramda 更新状态 嗯姆
import { modify, TimeInfo, timeInfo, formatNum } from "../basic/BaseFunction";
import { BaseComponent } from "../basic/BaseComponent";
import {max, subtract, pipe, min, add, __} from "ramda";
import { observable, autorun, computed } from "mobx";
const {ccclass, property} = cc._decorator
class State {
@observable
count: number = 0;
@observable
timestamp: number = Date.now();
@computed
get time() {
return timeInfo(this.timestamp);
}
}
type Action
= ["Inc"]
| ["Dec"]
| ["Set", number]
@ccclass
export class CounterExample extends BaseComponent<State, Action> {
@property(cc.Button)
minusButton: cc.Button = null;
@property(cc.Button)
plusButton: cc.Button = null;
@property(cc.Label)
contentLabel: cc.Label = null;
@property(cc.Label)
timeLabel: cc.Label = null;
@property(cc.Button)
maxButton: cc.Button = null;
readonly MAX_SIZE = 999;
start () {
this.onTouchEnd(this.minusButton.node, ["Dec"]);
this.onTouchEnd(this.plusButton.node, ["Inc"]);
this.onTouchEnd(this.maxButton.node, ["Set", this.MAX_SIZE]);
this.state = new State();
this.subs = [
autorun(() => this.renderCounter(this.state.count)),
autorun(() => this.renderTimeInfo(this.state.time))
]
this.schedule(() => this.setState({"timestamp": Date.now()}), 1);
}
eval (action: Action) {
switch (action[0]) {
case "Dec": {
this.modify({"count": pipe(subtract(__, 1), max(0))})
break;
}
case "Inc": {
this.modify({"count": pipe(add(1), min(this.MAX_SIZE))});
break;
}
case "Set": {
this.setState({"count": action[1]});
break;
}
}
}
renderTimeInfo(ti: TimeInfo) {
this.timeLabel.string = `${formatNum(ti.hour, 2)}:${formatNum(ti.minute, 2)}:${formatNum(ti.seconds, 2)}`;
}
renderCounter(count: number) {
this.contentLabel.string = String(count);
}
}1. 添加subs
BaseComponent在destroy时，会将subs全部unsubscribe
// BaseComponent.ts
export abstract class BaseComponent<State, Action extends Type<any, any>> extends cc.Component implements Component<State, Action> {
subs: Array<Subscription> = [];
onDestroy() {
this.subs.forEach(sub => sub.unsubscribe());
}
}
// Example.ts
@ccclass
export class CounterExample extends BaseComponent<State, Action> {
start () {
this.subs = [
this.state.count.subscribe({ next: count => this.render(count)})
]
}
}2. safeRemove修改
现在safeRemove默认调用node.destroy()
- 二次确认框
// 此处定义，需要二次确认框的类型及其可能的初始化参数
export type SecondConfirmType
= TypeUnit<"ExitSecondConfirm">
| Type<"SaveConfig", Pair<number, number>>
export async function showSC(type: SecondConfirmType): Promise<boolean> {
let sc: SecondConfirm = null;
switch (type.typeName) {
case "ExitSecondConfirm": {
let prefab = await ResUtils.prefab("exitSecondConfirm");
let node = cc.instantiate(prefab);
sc = node.getComponent(ExitSecondConfirm);
GlobalEnv.getInstance().dispatchAction(Action("OpenPanelWithNode", node));
break;
}
case "SaveConfig": {
let prefab = await ResUtils.prefab("saveConfig");
let node = cc.instantiate(prefab);
let saveConfig = node.getComponent(SaveConfig);
saveConfig.init(type.value.fst, type.value.snd);
sc = saveConfig;
GlobalEnv.getInstance().dispatchAction(Action("OpenPanelWithNode", node));
break;
}
}
return new Promise<boolean>(function(resolve) {
sc.cancelBtn.node.on(TOUCH_END, () => {
safeRemove(sc.node);
resolve(false);
});
sc.yesBtn.node.on(TOUCH_END, () => {
safeRemove(sc.node);
resolve(true);
});
});
}
// usage
async function sthOnClick () {
if (await showSC(Action("SaveConfig", mkPair(param1, param2)))) {
// 用户点击确认
} else {
// 用户点击取消
}
}-
BaseFunction.ts
更新一系列函数 -
去掉了无用的action
-
Json载入测试
// test.json
{
"first": {
"id": 1,
"content": "one"
}
}import * as test from "./test.json" // 或者 import test from "./test.json"
console.log(test.first.id === 1); // OK
console.log(test.first.content === 1); // Error测试结果
CocosCreator编译会报错
但是编译到微信小游戏里面可以正常载入Json
在 tsconfig.json
compilerOptions里面添加
"resolveJsonModule": true
传统Message传递
// pureMVC
class XXX extends puremvc.Mediator implements puremvc.IMediator {
public static NAME: string = "XXXMediator";
public constructor(viewComponent: any) {
super(GameMenuMediator.NAME, viewComponent);
}
public listNotificationInterests(): Array<any> {
return [GameProxy.SCORE_UPDATE, GameProxy.SCORE_RESET];
}
public handleNotification(notification: puremvc.INotification): void {
var data: any = notification.getBody(); // 这个地方是any
switch (notification.getName()) {
case GameProxy.SCORE_UPDATE: {
break;
}
case GameProxy.SCORE_RESET: {
break;
}
}
}
}消息传递只是定义了消息的名字，对消息的内容的类型并没有限定，需要靠约定。
自己定义消息的类型和消息体的类型
export type GlobalAction
= Type<"OpenPanelWithNode", cc.Node> // 定义消息体类型： cc.Node
| TypeUnit<"BackToMainPage"> // 消息内容为unit
function handleAction(action: GlobalAction) {
switch (action.typeName) {
case "OpenPanelWithNode": { // 消息类型可以提示，写错会提示
let node = action.value; // node的类型会被自动推断为cc.Node, 调用不是cc.Node的方法会报错
break;
}
case "BackToMainPage": {
// action.value 为 unit
break;
}
}
}eval处理事件, 根据事件更新state- 所有的逻辑，case处理，应仅有次数可以更新state
render根据state渲染，可以由多个绑定到State里面各个Behavior上state明确定义的State, 内部由一个以上的BehaviorSubject构成Action对事件的统一抽象。需要自己定义。 定义该组件可能会产生的交互行为，包括- UI交互
- 网络请求
- 定时器
import Browser
import Html exposing (Html, button, div, text)
import Html.Events exposing (onClick)
main =
Browser.sandbox { init = init, update = update, view = view }
type Msg = Increment | Decrement
type alias Model = Int -- state
init : Model
init = 0
update msg model = -- eval
case msg of
Increment ->
model + 1
Decrement ->
model - 1
view model = -- render
div []
[ button [ onClick Decrement ] [ text "-" ]
, div [] [ text (String.fromInt model) ]
, button [ onClick Increment ] [ text "+" ]
]import { Type, TypeUnit, ActionUnit, Action } from "../basic/Types";
import { BehaviorSubject } from "rxjs";
import { __, add, always } from "ramda"
import { modify } from "../basic/BaseFunction";
import { BaseComponent } from "../basic/BaseComponent";
const {ccclass, property} = cc._decorator
interface State {
count: BehaviorSubject<number>;
}
type Action
= TypeUnit<"Inc">
| TypeUnit<"Dec">
| Type<"Set", number>
@ccclass
export class CounterExample extends BaseComponent<State, Action> {
@property(cc.Button)
minusButton: cc.Button = null;
@property(cc.Button)
plusButton: cc.Button = null;
@property(cc.Label)
contentLabel: cc.Label = null;
@property(cc.Button)
maxButton: cc.Button = null;
readonly MAX_SIZE = 999;
start () {
this.onTouchEnd(this.minusButton.node, ActionUnit("Dec"));
this.onTouchEnd(this.plusButton.node, ActionUnit("Inc"));
this.onTouchEnd(this.maxButton.node, Action("Set", this.MAX_SIZE));
this.state = {
count: new BehaviorSubject<number>(200)
};
this.subs = [
this.state.count.subscribe({ next: count => this.render(count)})
]
}
render(count: number) {
this.contentLabel.string = String(count);
}
eval (action: Action) {
switch (action.typeName) {
case "Dec": {
let count = this.state.count.getValue();
if (count > 0) {
modify(this.state.count, add(__, -1))
}
break;
}
case "Inc": {
let count = this.state.count.getValue();
if (count < this.MAX_SIZE) {
modify(this.state.count, add(__, 1))
}
break;
}
case "Set": {
modify(this.state.count, always(action.value));
break;
}
}
}
}type Type<T, U> = {typeName: T, value: U}
type TypeUnit<T> = Type<T, Unit>
type RemoteData<Ok, Err>
= TypeUnit<"NotAsked">
| TypeUnit<"Loading">
| Type <"Success", Ok>
| Type <"Failure", Err>参考Purescript/Haskell定义ADT
data RemoteData e a
= NotAsked
| Loading
| Failure e
| Success a首先一个cocos creator(version >= 2.0) 用的shader类型如下
interface Shader {
name: string,
defines: Array<{ name : string }>,
vert: string,
frag: string,
}
const DefaultVert: string =
`
uniform mat4 viewProj;
uniform mat4 model;
attribute vec3 a_position;
attribute vec2 a_uv0;
varying vec2 uv0;
void main () {
mat4 mvp;
mvp = viewProj * model;
vec4 pos = mvp * vec4(a_position, 1);
gl_Position = pos;
uv0 = a_uv0;
}
`
fragmentShader与shadetoy上不一样的地方有 首先，shader的输入变量如下： 可自行定义，需要在glsl中修改
let mainTech = new renderer.Technique(
['transparent'],
[
{ name: 'texture', type: renderer.PARAM_TEXTURE_2D }, // 纹理 iChannel0, shadertoy上使用iChannel0的地方请替换为texture
{ name: 'color', type: renderer.PARAM_COLOR4 }, // 当前的颜色值
{ name: 'pos', type: renderer.PARAM_FLOAT3 }, // iResolution
{ name: 'size', type: renderer.PARAM_FLOAT2 }, // size, 可用来计算fragCoord
{ name: 'time', type: renderer.PARAM_FLOAT }, // iTime
{ name: 'num', type: renderer.PARAM_FLOAT }
],
[pass]
);其次
// 开头的变量声明， 变量名字可以使用shadertoy的着色器输入变量，不过在ShaderMaterial中需修改
// 其mainTech对应的值
uniform sampler2D texture;
uniform vec3 pos;
uniform float time;
uniform vec2 size;
varying vec2 uv0; // 这个是额外的变量， 用于计算fragCorrd, 应该是引擎传入的当前坐标的相关信息;最后
void mainImage( out vec4 fragColor, in vec2 fragCoord ) {
// code
}
void main() {
// 首先要先计算出所使用的fragCoord
vec2 fragCoord = vec2(uv0.x * size.x - 0.5 * size.x, 0.5 * size.y - uv0.y * size.y);
// code
}
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