< reprint > UE4 's actor Class C + + simple attempt

original link: Jane bookSmall crisp xx https://www.jianshu.com/p/2bcc80f0e789

At first I spent a period of time UE4, and found that if the blueprint system really does not suit my style. Because it has been developed with Unity3d program. But then, after touching the UE4 C + +, it felt pretty good. It seems that there is no relevant books and textbooks in the country, it can only go to the crossing Web reference document

Https://docs.unrealengine.com/latest/INT/Programming/index.html

UE4 and Unity3d give me the general feeling:

1.ue4 consumes a lot more than unity N, basically open UE4 game can not open
2.UE blueprint for the artist to see, the programmer should honestly use C + + Bar
3.Unity each time after writing C # code save can be run, and UE4 can only be used each time after writing code manually recompile and restart, this is very dependent on a particularly strong computer, especially CPU, solid state, solid state
4.Unity component-based programming, each gameobject in the view window inherits from Momobehavior has Ongui, Update, start and other system callbacks for you to use. Instead, UE4 can only manually inherit the virtual function tick and Beginplak, and replicate it. Give me feel is 2 good car, one is automatic block, one is manual block.

Create a new C + + Foundation project for Unreal 4

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When the new is complete

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Create a new actor class

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Add code to it

#pragmaOnce#include"Gameframework/actor.h"#include"myactor.generated.h"Uclass ()classEmpty_api Amyactor: Publicaactor{generated_body () Public:    //Run Time    floatRunningtime; //ConstructorsAmyactor (); //the callback executed at the start is equivalent to the void start () in Unity    Virtual voidBeginplay ()Override; //each frame executes a callback equivalent to void Update () inside Unity    Virtual voidTick (floatDeltaseconds)Override;}; #include"Empty.h"#include"MyActor.h"#include"iostream"//ConstructorsAmyactor::amyactor () {//set tick () once per frame, set to False if not requiredPrimaryactortick.bcanevertick =true;}//callback to execute at startvoidAmyactor::beginplay () {super::beginplay (); Std::cout<<"Start Execution";}//callbacks executed at each framevoidAmyactor::tick (floatdeltatime) {Std::cout<<"each frame executes";    Super::tick (deltatime); //gets the position of the actor saved to the NewLocation variableFvector NewLocation =getactorlocation (); //Get the time difference value    floatDeltaheight = (Fmath::sin (runningtime + deltatime)-Fmath::sin (runningtime)); //change the height of each increment by 20.0fNewlocation.z + = Deltaheight *20.0f; //change the value of run timeRunningtime + =Deltatime; //set the position of the current actorsetactorlocation (newlocation);}

Finally add the code myactor to a cone and press CTRL+F5 to compile it to see it shaking up and down.

< reprint > UE4 's actor Class C + + simple attempt