Índice

1. That's One Fancy Hammer!
Introducing Unity 3D
The engine, the tool, and the all-weather tires
Unity takes over the world
Why choose Unity?
Why burn this book and run away screaming?
Browser-based 3D – welcome to the future
Time for action – install the Unity Web Player
Welcome to Unity 3D!
What can I build with Unity?
FusionFall
Completely hammered
Should we try to build FusionFall?
Another option
Off-Road Velociraptor Safari
Fewer features, more promises
Maybe we should build Off-Road Velociraptor Safari?
I bent my Wooglie
Big Fun Racing
Diceworks
Lovers in a Dangerous Spacetime
Showcase Showdown
Unity Technologies – "Made with Unity" page
Kongregate
The iOS App Store
Walk before you can run (or double jump)
There's no such thing as "finished"
Stop! Hammer time
Fight Some Angry Bots
The wonders of technology!
The Scene window
The Game window
The Hierarchy panel
The Project panel
The Inspector panel
Heads Up?
Layers and layout dropdowns
Playback controls
Scene controls
Don't stop there – live a little!
Summary
Big ambition, tiny games
2. Let's Start with the Sky
That little lightbulb
The siren song of 3D
Features versus content
A game with no features
Mechanic versus skin
Trapped in your own skin
That singular piece of joy
One percent inspiration
Motherload
Possible additional features:
Heads up!
Artillery Live!
The skinny on multiplayer
Bang for your buck
Pong
The mechanic that launched a thousand games
Have a go hero – redesign your favorite games
Toy or story
Pop Quiz – finding that singular piece of joy
Redefining the sky
Summary
Let's begin
3. Game #1 – Ticker Taker
Kick up a new Unity project
Where did everything go?
'Tis volley
Keep the dream alive
Slash and burn!
The many faces of keep-up
Creating the ball and the hitter
Time for action – create the Ball
What just happened – that's all there is to it?
A ball by any other name
Time for action – rename the Ball
Origin story
XYZ/RGB
Time for action – move the Ball Into the "Sky"
Time for action – shrink the Ball
Time for action – save your scene
Time for action – add the Paddle
What's a Mesh?
Poly wants to crack your game performance?
Keeping yourself in the dark
Time for action – add a light
Time for action – move and rotate the light
Have a go hero
Extra credit
Are you a luminary?
Who turned out the lights?
Darkness reigns
Cameramania
Time for action – test your game
Let's get physical
Add physics to your game
Understanding the gravity of the situation
More bounce to the ounce
Time for action – make the Ball bouncy
Have a go hero
Summary
Following the script
4. Code Comfort
What is code?
Time for action – write your first Unity Script
A leap of faith
Lick it and stick it
Disappear me!
What just happened?
It's all Greek to me
You'll never go hungry again
With great sandwich comes great responsibility
Examining the code
Time for action – find the Mesh Renderer component
Time for action – make the ball re-appear
Ding!
Time for action – journey to the Unity Script Reference
The Renderer class
Have a go hero – pulling the wings off of flies
What's another word for "huh"?
It's been fun
Time for action – unstick the Script
Gone, but not forgotten
Why code?
Equip your baby bird
Time for action – create a new MouseFollow Script
What just happened?
A capital idea
Animating with code
Time for action – animate the Paddle
What just happened – what witchcraft is this?
Why didn't the Paddle animate before?
Pick a word – (almost) any word
Screen coordinates versus World coordinates
Move the Paddle
Worst. Game. Ever.
See the matrix
Time for action – listen to the paddle
A tiny bit o' math
Tracking the numbers
Futzing with the numbers
Time for action – Log the New Number
She's a-work!
Somebody get me a bucket
Time for action – declare a variable to store the Screen midpoint
What just happened – we've gone too var
Using all three dees
Time for action – follow the y position of the mouse
A keep-up game for robots
Once more into the breach
Time for action – re-visit the Unity Language Reference
Our work here is done
Time for action – add the sample code to your Script
One final tweak
What's a quaternion?
Wait, what's a quaternion?
WHAT THE HECK IS A QUATERNION??
Educated guesses
More on Slerp
Right on target
Have a go hero – time to break stuff
Keep it up
Beyond the game mechanic
C# Addendum
5. Game #2 – Robot Repair
You'll totally flip
A blank slate
You're making a scene
Time for action – set up two scenes
No right answer
Time for action – prepare the GUI
The beat of your own drum
Time for action – create and link a custom GUI skin
What just happened?
Time for action – create a button UI control
What just happened?
Have a go hero – no sense sitting around on your button
Want font?
Cover your assets
Time for action – nix the mip-mapping
Front and center
Time for action – center the button
What just happened – investigating the code
The waiting game
The easiest button to button
To the game!
Time for action – add both scenes to Build List
Set the stage for robots
Time for action – prepare the game scene
The game plan
Have some class!
Time for action – store the essentials
A matter of great import
Building a better bucket
How big is your locker?
Start me up
Going loopy
The anatomy of a loop
To nest is best
Seeing is believing
Time for action – create an area to store the grid
Have a go hero – don't take my word for it!
Build that grid
What just happened – grokking the code
Now you're playing with power!
C# addendum
6. Game #2 – Robot Repair Part 2
From zero to game in one chapter
Finding your center
Time for action – centering the game grid vertically
What just happened?
Time for action – centering the game grid horizontally
What just happened – coding like a ninja
Down to the nitty griddy
Do the random card shuffle
Time for action – preparing to build the deck
Let's break some robots
Time for action – building the deck
What just happened – dissecting the bits
Time for action – modifying the img argument
What just happened?
What exactly is "this"?
Have a go hero – grokketh-thou Random.Range()?
Random reigns supreme
Second dragon down
Time to totally flip
Time for action – making the cards two-sided
Time for action – building the card-flipping function
Time for action – building the card-flipping function
What just happened – dissecting the flip
Pumpkin eater
What just happened?
Stabby McDragonpoker rides again
Game and match
Time for action – ID the cards
What just happened?
Time for action – comparing the IDs
What just happened?
On to the final boss
Endgame
Time for action – checking for victory
What just happened?
Have a go hero – extra credit
Endgame
Bring. It. On.
C# Addendum
7. Don't Be a Clock Blocker
Apply pressure
Time for action – preparing the Clock Script
Time for more action – preparing the clock text
Still time for action – changing the clock text color
Time for action rides again – creating Font Texture and Material
Time for action – what's with the tiny font?
What just happened – was that seriously magic?
Time for action – preparing the clock code
What just happened – that's a whole lotta nothing
Time for action – creating the countdown logic
Time for action – displaying the time on-screen
What just happened – what about that terrifying code?
Picture it
Time for action – grabbing the picture clock graphics
What just happened – you can do that?
Time for action – Flex those GUI muscles
What just happened – how does it work?
The incredible shrinking clock
Keep your fork – there's pie!
Pop quiz – how do we build it?
How they did it
Time for action – rigging up the textures
Time for action – writing the pie chart script
What just happened?
Time for action – commencing operation pie clock
What just happened – explaining away the loose ends
Time for action – positioning and scaling the clock
Have a go hero – rock out with your clock out
Unfinished business
C# Addendum
8. Hearty Har Har
Welcome to Snoozeville
Model behavior
Time for action – exploring the models
Time for action – hands up!
What just happened – size matters
Time for action – changing the FBX import scale settings
Time for action – making the mesh colliders convex
Time for action – making the hands and tray follow the mouse
What just happened – monkey see, monkey do
Time for action – getting your heart on
Time for action – ditching the Ball and Paddle
What just happened – bypass the aorta
Time for action – material witness
What just happened – understanding Materials
Have a go hero – adding materials to the other models
This just in – this game blows
Time for action – multiple erections
Time for action – creating a font texture
Time for action – create the HeartBounce script
What just happened – charting a collision course
Time for action – tagging the tray
Time for action – tweaking the bounce
What just happened – storing velocity
Time for action – keeping track of the bounces
Time for action – adding the lose condition
What just happened – understanding the code
Time for action – adding the Play Again button
What just happened?
Ticker taken
C# Addendum
9. Game #3 – The Break-Up
Time for action – bombs away!
Time for action – poke those particles
Time for action – creating a spark material
Have a go hero – time to ignite your creative spark
Time for action – prefabulous
What just happened – what's a Prefab?
Time for action – lights, camera, and apartment
Time for action – adding the character
Time for action – registering the animations
Time for action – scripting the character
What just happened – stepping through the "step" code
Time for action – open the pod bay door, Hal
Time for action – collision-enable the character
Time for action – apocalypse now?
Time for action – go boom
Time for action – kill kill murder die
Time for action – the point of impact
Time for action – hook up the explosion
Summary
C# addendum
10. Game #3 – The Break-Up Part 2
Time for action – amass some glass
Time for action – create a particle system
What just happened – getting smashed
Time for action – make it edgier!
What just happened – I fall to pieces
Time for action – contain the explosion
What just happened – duped?
Time for action – let's get lazy
What just happened – FallingObject: The PuppetMaster
Very variable?
Terminal velocity is a myth – bombs fall faster
What just happened – when game objects collide?
Time for action – tag the objects
Time for action – write the collision detection code
Time for action – animation interrupts
What just happened – the impenetrable stare
Time for action – add facial explosions
What just happened – raindrops keep 'sploding on my head
Time for action – make some noise
Time for action – add sounds to FallingObject
Silent 'Splosion
What's the catch?
Have a go hero – sound off
Time for action – mix it up a bit
Have a go hero – filling in the gaps
Summary
C# Addendum
11. Game #4 – Shoot the Moon
Time for action – duplicate your game project
Time for action – space the shooter up a bit
Time for action – enter the hero
Time for action – it's a hit!
Time for action – bring on the bad guys
Time for action – do some housekeeping
Time for action – fixing the fall
Time for action – tweak the hero
What just happened – hooray for lazy!
Time for action – give up the func
Time for action – itchy trigger finger
Time for action – futurize the bullet
Time for action – building Halo
Time for action – fire!
Time for action – code do-si-do
What just happened – eat lead
Time for action – the maaagic of aaaarguments
Time for action – add the most important part of any space shooter
Last year's model
Have a go hero – filling in the empty space
Summary
C# Addendum
12. Game #5 – Kisses 'n' Hugs
Computers that think
Time for action – haul in the hallway
Time for action – hash it out
One Script to rule them all
Time for action – it's hip to be square
What just happened – find and click
Squaring the Square
Time for action – now you see it...
Family values
Time for action – X marks the spot
Time for action – boy O boy
Time for action – bottoming out
Here comes the drop
What just happened – to collide or not to collide?
Time for action – +9 accuracy
Time for action – solve for X
What just happened – lockdown
Time for action – it takes two to Tic Tac Toe
What just happened – alternating between players
Time for action – designer to player. Come in, player.
What just happened – prompt service
Slowly building to a climax
Have a go hero – think it through
Read after thinking
What just happened – building a more complex lock
On deaf ears
Time for action – pretty maids all in a row
What just happened – order!
Winner is coming
Codesplosion
Need-to-know basis
Need-to-know basis
Clean-up on aisle code
What just happened – vending machine
Shave and a haircut
What just happened – hunting for a win
Time for action – check for a win
Sore loser
Time for action – notify the winner
Time for action – you win. Now what?
Have a go hero – draw, pardner
Nice moves
Time for action – the final bug
All done but for the shouting
C# addendum
13. AI Programming and World Domination
Take it away, computer
Time for action – add computer control
Herpa derp derp
What just happened – making a list, checking it twice
Unpacking the code
Time for action – code consolidation
Tic Tac Toe at the speed of light
Sore loser
Click-spamming for fun and profit
Artificial stupidity
Have a go hero – solve Tic Tac Toe
Time for action – winning is everything
It's a trap!
The leftovers
Time for action – pseu pseu pseudocode
What just happened – stepping through the strategy
Time for action – begin at the end
Time for action – the final four
Code one, get one free
Have a go hero - stump the author
The actual intelligence behind artificial intelligence
Time for action – score!
What just happened – the search is on
Shut your trap
Detecting the tri-corner trap
Time for action – to catch a competitor
What just happened – I'm running out of trap puns
Perfection Horrible, horrible perfection.
Time for action – programming fallibility
What just happened – roll for initiative
Turning it up to "Smart"
Code encore
Summary
More hospitality
C# addendum
14. Action!
Open heart surgery
Time for action – haul in the hallway
Time for action – meet me at camera two
Time for action – adjust Main Camera
Time for action – deck the halls
Time for action – turn on the lights
Time for action – set up the camera rig
Time for action – animate the bouncer
What just happened – red and raging
Time for action – I like to move it move it
Have a go hero – bounce your brains out
Time for action – animate the runner
What just happened – holy hospital rampage, Batman!
Time for action – how to "handle" Nurse Slipperfoot
Time for action – you spin me right round
Have a go hero – give Robo-Nurse a soul
Have a go hero – use your new-found powers for good
Time for action – deploy your game
Time to grow
Beyond the book