A virtual pet game on iPad starts with a simple state loop: the pet has needs, the player changes those needs through touch controls, and the pet’s animation or expression shows the result. In hyperPad, Attributes store values such as hunger, happiness, and energy. Behaviors handle input, time, conditions, feedback, and saving.

Build one care action before adding rooms, shops, mini-games, or social features. A small feeding loop gives you enough to test whether the pet feels responsive and whether the player understands what changed.

Plan the smallest virtual pet game

Create one Scene with:

one pet Object
idle, happy, and hungry animations
a food Object or feed button
three UI Labels for hunger, happiness, and energy
one message Label
one reset button

Start each need at a value from 0 to 100. Higher values can represent a better state, as long as every rule uses the same meaning.

Attribute	Starting value	Changes when	Visible feedback
Hunger	70	Time passes or the pet eats	Hunger Label and hungry animation
Happiness	60	The player interacts with the pet	Happy animation and message
Energy	80	The pet plays or rests	Energy Label and idle state

The Object Attributes guide explains how an Object stores values. Set Attribute changes a value, while Get Attribute retrieves it for comparisons and UI.

Build the feeding interaction

Use a food Object or a UI button as the player’s first input. Connect Started Touching to the feeding logic.

A basic Behavior flow is:

Read the current hunger Attribute.
Add a fixed amount, such as 15.
Limit the result to the maximum value.
Store the new value.
Update the hunger Label.
Play the eating or happy animation.
Show a short message such as “Full!”
Disable repeated scoring until the interaction finishes.

This sequence teaches input, values, state, UI, and feedback in one mechanic. The player should see the effect immediately.

Do not add five foods yet. First confirm that one food works every time and cannot raise hunger above the maximum.

Let needs change over time

A virtual pet becomes a system when its state changes between player actions. Use a Timer to reduce hunger at a controlled interval.

For an early prototype, keep the interval short enough to observe during a test. For example, reduce hunger by five every ten seconds. This is a test value, not a recommendation for the finished game.

After the timer runs:

Get the hunger value.
Subtract five.
keep the result at or above zero.
Set the new Attribute.
Update the Label.
Check which animation state should play.

Build the rule so one timer cycle produces one change. Confirm that restarting the Scene does not accidentally create duplicate timers.

Connect state to animation

The pet’s appearance should explain its condition before the player reads a number.

A simple state model can use three ranges:

Hunger value	Pet state	Animation	Message
61–100	Content	Idle	No warning
31–60	Needs attention	Look around	“A snack would help.”
0–30	Hungry	Hungry	“I’m hungry.”

Connect the result to Play Animation. Keep animation names and ranges consistent. If hunger changes while an eating animation is running, decide which state has priority instead of letting two animation paths fight for control.

Add happiness after feeding works

Happiness should create a different decision, not duplicate hunger with another label. Give it its own input, such as touching the pet to play.

A first happiness interaction can:

increase happiness by ten
reduce energy by five
play a short reaction
update both Labels
block another interaction until the reaction ends

Now the player makes a tradeoff. Playing improves one need while using another. This is more interesting than adding several unrelated buttons.

Save only the state you can restore

If the pet should keep its needs between sessions, decide exactly what must be saved. The current hunger, happiness, energy, pet state, and last update time may all matter.

The Save to File documentation covers writing Project data. Saving values is only half of the system. You also need to load them, validate them, and provide safe defaults when no save exists.

Test these cases:

first launch with no save file
normal save and reload
values at zero and at the maximum
a missing or invalid value
reset followed by reload
closing during an animation or timer cycle

Do not claim offline decay until the Project actually compares saved time with the current time and handles long gaps safely.

Design a clear pet screen

Keep the first interface readable on the intended iPad orientation.

Use a separate UI layer for Labels and buttons. Give each need a distinct label and avoid relying only on color. Touch targets should remain easy to press without covering the pet.

Test the screen at normal play size:

Can a new player identify the pet’s current need?
Does touching the food cause one clear result?
Can the player tell why energy changed?
Are the Labels readable over the background?
Does the message disappear at the right time?
Does the reset button restore every starting value?

The goal is not to fill the screen. It is to make the state understandable.

Expand in a controlled order

After feeding, time decay, happiness, saving, and reset logic work, add one system at a time.

A practical order is:

Resting to restore energy.
A second food with a different effect.
One short mini-game that changes happiness and energy.
A simple inventory Attribute.
A second Scene only when the first Scene saves and restores correctly.
Cosmetic customization that does not change the core rules.

Social sharing, online interactions, and notifications are separate product decisions with platform, privacy, account, and implementation requirements. Do not promise them because they are common in other pet games. Include them only after you have verified the exact workflow your Project will use.

Test the complete care loop

Run a repeatable test before adding more content.

Test	Expected result
Wait for one timer interval	Hunger changes once and the Label matches
Feed the pet repeatedly	One completed input produces one change; hunger never exceeds 100
Cross a state threshold	The correct animation and message appear
Play with low energy	The rule produces the intended result and cannot create an invalid value
Save and reopen	Every stored value returns correctly
Reset the Project state	Attributes, Labels, animation, and timers return to the defined start

Ask another person to play without explaining the controls. Watch whether they understand what the pet needs and what each action changes.

From prototype to a finished iPad game

Build and test the virtual pet Project on iPad. Eligible creators using paid hyperPad can share Projects on the Hub for feedback. App Store submission is a separate workflow: hyperPad Complete provides Xcode Export, followed by work on a compatible Mac with Xcode, an Apple Developer account, App Store Connect, and Apple’s review process.

A virtual pet game does not need dozens of features to feel alive. It needs state the player can understand, actions with visible consequences, and reliable behavior after saving, reopening, and restarting. Finish that loop first.

How to Make a Virtual Pet Game on iPad