[Lập Trình Game] Lesson 10: Creating Enemies in Godot programming – Part 1

In this article, I will guide you how to create enemies for our characters Godot game programming. Enemies will cause the character to lose health or you will have to fight the enemy. And this part has a few parts that may be very difficult and unsuccessful, so please prepare yourself mentally.

And let's get started.

Create enemies

First create a new Sence and include the child node's 2D kinematicbody AnimatedSprite and CollsionShape2D then press Ctrl + S stay.

If you are using anonyviet assets, there are enemy assets at: asset-player > NPC > enemy assets

Link download Asset

Choose any one.

Create a new SpriteFrame

Creating Animation is move

If your photo is blurry Import come again

Next set collision for it, here I set it below and not above so that the upper part can let the character jump up and destroy it

Lock it and create a new script and this script will be named enemy

We will create additional variables later

var Vitri = 1
var  vantoc = Vector2.ZERO //hoặc Vector2() đều giống như nhau
var  Tocdo = tùy bạn
var Trongluc = tùy bạn
var  FLOOR = Vector2(0,-1)

Here const is the command used to lock the number, meaning that when you declare a variable with const, it will lock that number and its value can never be edited.

Next we will create the physical motion function

And will code as follows

Assign gravity to it

vantoc.y  =  trongluc

Assign speed to it

vantoc.x  += tocdo * delta * vitri (Here * delta to reduce enemy speed)

Add move_and_slide statement to make it moveable

vantoc = move_and_slide(vantoc)

Next you will instance it outside our sense:

And instance it

Run the game and you will see it move

Here, I have the collsionshape visible mode, so there's nothing

Next we will code it to move left, and animate

And here I will have a command:

if is_on_wall() : is_on_wall() is a statement that returns true if the Body is on the Wall, and it only executes when called with move_and_slide

And next below if is_on_wall() we will code one more line:

vitri = vitri * -1 and this line when it touches something vitri is 1 then it will * -1 and it will move backwards

Oh, and if you run the game and see the character running slowly, check if move_and_slide has FLOOR. If not, add it. If it's there and it's still slow, adjust the speed to about 20-30.

And next we will code the animation for it

if vitri == 1:
$AnimatedSprite.flip_h = false
else:
$AnimatedSprite.flip_h = true

The 2 lines above are the 2 lines that will change the image of the enemy, flip_h = false The image will flip to the right flip_h = true is to the left

if vitri == 1 : means the position is equal to 1 and = 1 then it will move to the right but our enemy moves to the right first so flip_h will = false

And vice versa

Then you call animation move for me

$AnimatedSprite.play("Move")

Mine is fine after running the game

And in the next lesson, I will guide you to create raycast so that enemies can move on the tilemap as shown below without falling.