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Create a new object

Select text

Object Name: score Display

Size: 50 Bold

Text: Score : 

Place the Score : in the top left of your screen

Move the Score : object to the front layer

Open up your scene properties and click Edit Scene Variables

Create a new Scene Variable and name it Score

We will use this variable to hold the number of coins we have collected

Create a new group

Add a new event in your Score Event Group and remove it from your collision group

Add an additional action to this event

Action: Change variable value

Variable: Score

Modification's sign: + (add)

Value: 1

What we are doing here is adding 1 to the variable each time the player collides with the coin

Add another event to your Score Group

Action: Text

Object: ScoreDisplay

Text: "Score : " + VariableString(Score)

What is happening is that we are adding the current score variable after Score : on the screen 

If we want to keep the coin counting troughout the game, we will need to change this from a scene variable to a global variable

All we have to do is change action to use the global variable that we created instead of the scene variable and change the VariableString to Globals

Create a new Sprite

Name it Heart

64x64

Make a Heart in Piskel

Create a 64 x 64 Tile Sprite with the same art

Place your Heart in the game where your player can collide with it

Place your TileHeart below the score

Move the TileHeart to the Front Layer so that it is always in the same place on your play area

Create a new Event Group called Health 

Create new event

Condition

Object: Hero

Object Variable Value

Add or edit variables

Name the Variable Health

It is going to be a number and we want it to start at 2 (because we want to start with two lives)

Create a new event

Condition

Hero

Collision

Heart

Action

Hero

Change Object Variable Value

Variable: Health 

Modification Sign: +(add)

Value: 1

So each time the hero collides with a heart, 1 is added to the health variable

Go ahead and remove "The variable Health of Hero"

Add a new event

Condition is Always

Action

Object: TileHeart

Width

Width: Hero.Variable(Health) * 64

So whatever the Health Variable for our Hero (aka lives) will be multiplied by 64 (the width of our tiled sprite)

Our tiled sprite Heart is 64px wide so if we have 1 life, the width of the tiles sprite is 1 x 64 = 64 so it only shows one sprite

If we had two lives, our variable is 2.

2 x 64 = 128

128px would show two hearts

When you collide with the heart, the Health variable will  continue to add 1 until you are no longer in collision

You need to add delete heart before you add one to the health variable so that it only happens once

Now that we have a life system in place, you want your collisions with the bad items to take away a life so delete your events that collide with blade, bad guy, bat, etc and change scene (you could also move them down to the Health Group and modify them if you prefer)

New Event

Condition: Hero is in collision with death

Action: 

Hero 

Change Object Variable Value

Health Subtract 1 (because we want to lose a life when we hit death)

By deleting the old collision with death, we have created a bug where the game does not restart. If you added change to scene, it would restart the game with two lives every time and reset the variable every time so we need to create a spawn point

Create a new object

Sprite

Name it Spawn but do not create any art

Drag your spawn object into your game where you want to respawn

Chane the Z order so that it is behind your hero

Now add another action to your Hero in Collision with Death event

Hero

Position

Spawn.X()

Spawn.Y()