Lxpk: Lxpk moved page Gamebridge/Unity Trigger Tutorial to Gamebridge/Trigger Tutorial

2015-11-14T15:48:17Z

Lxpk moved page Gamebridge/Unity Trigger Tutorial to Gamebridge/Trigger Tutorial

← Older revision	Revision as of 08:48, 14 November 2015
(No difference)

Lxpk: Lxpk moved page Unity Trigger Tutorial to Gamebridge/Unity Trigger Tutorial

2015-11-14T15:47:22Z

Lxpk moved page Unity Trigger Tutorial to Gamebridge/Unity Trigger Tutorial

← Older revision	Revision as of 08:47, 14 November 2015
(No difference)

Lxpk at 06:41, 4 November 2015

2015-11-04T06:41:17Z

← Older revision		Revision as of 23:41, 3 November 2015
Line 41:		Line 41:
	How could we use a script to stop ourselves from falling off the edge?		How could we use a script to stop ourselves from falling off the edge?

	There are at least 2 ~~obvious~~ ways to do it:		There are at least 2 logical ways to do it:

	# Check to see if the height of the player (their transform.position.y value) is less than the height of the lava (a y value below the ground).		# Check to see if the height of the player (their transform.position.y value) is less than the height of the lava (a y value below 0 which is where the ground is).
	# Make an actual cube to represent the lava below the ground and make it a trigger with a script that handles the OnTriggerEnter event when you touch it.		# Make an actual cube to represent the lava below the ground and make it a trigger with a script that handles the OnTriggerEnter event when you touch it.

Lxpk: more fun to read

2015-11-04T06:39:56Z

Lxpk: Created page with " Learning to make games with Unity is easy with the right tutorials and resources. * Coding Jar Tutorials ** Self-paced tutorials with guided voice and automatically advanci..."

2015-11-04T06:25:45Z

Created page with " Learning to make games with Unity is easy with the right tutorials and resources. * Coding Jar Tutorials ** Self-paced tutorials with guided voice and automatically advanci..."

New page

Learning to make games with Unity is easy with the right tutorials and resources.

* Coding Jar Tutorials
** Self-paced tutorials with guided voice and automatically advancing steps.
** [[Download them]] and give them a go.
* Unity 101 Tutorials
** Fall triggers
** Coins
* [[Unity/Learn]] has loads of great tutorials.
** Scripting

=== Unity 101: Fall Triggers ===

This is Unity 101 in 30 minutes and you are about to create your first video game!

# '''Create your first playable game scene'''
## Download, install and open [[Unity]]. (Download and install time doesn't count against the 10 minutes!)
## Create a new project by clicking File Menu / New Project (You can play with Angry Bots later!)
## Choose to import just Character Controller to save time, you can import more later from Assets Menu / Import.
## (Or choose everything to give yourself more to play with, but this blows the 10 minute thing!)
## In Hierarchy's top left corner click Create and click Cube.
## Click the fourth tool in the top right or hit 'R'.
## '''Resize''' the cube wide and flat ( scale 50,1,50 ) as a ground by dragging the colored boxes on its sides.
## Click its name in the top right Inspfector. Name it "ground".
## Drag a character controller from the Project view to the Scene view or Hierarchy.
## Position it above your ground cube.
# '''Test It!'''
## Click '''PLAY''' button top center.
## Your game is now running! Walk around with WASD and look around with the mouse.
## '''Click PLAY''' button again to stop.
## Remember: NEVER edit the game while it is playing or you'll lose changes, always stop it first.
## '''Save''' your Scene which is like your first level of your game and name it "level1".
## You can make it awesome in the next steps!
# '''Decorate your scene!'''
## Add point lights to make it look cool and more cubes to jump around on.
## Next we'll learn how to add a script to stop yourself from falling infinitely off the edge.
# '''Create a lava cube to avoid falling infinitely'''
## Select the "ground" cube.
## Edit Menu / Duplicate it.
## Move the duplicate down.
## Rename the duplicate "lava".
## Resize it to make it wider (100,1,100 scale) so it will catch you if you fall.
## Hit '''PLAY''' and try falling off the edge. Notice it catches you but you can walk further and fall off the edge still.
## Hit '''PLAY''' again to stop it.
## Click the "lava" cube to select it.
## In the Inspector, look for the Collider component.
## Check the "Is Trigger" checkbox.
## Hit '''PLAY''' and try falling off the edge. Notice it you now fall right through the lava cube without stopping.
## Hit '''PLAY''' again to stop the game.
# '''Create your first script code to avoid falling infinitely'''
## In the Project pane, click Create / Javascript.
## Rename the javascript "Fall". Click it once to make the name changeable.
## Drag the Fall script to the "lava" cube in the Scene, the Hierarchy or the bottom of its Inspector to attach it.
## Look in the inspector to confirm it is attached to the "lava" cube.
# '''Edit the script to handle an OnTriggerEnter event:'''
## Double-click the "Fall" javascript to edit it.
## Wait for MonoDevelop to load up.
## Double-click the "Fall" javascript again if it is not already open to edit it.
## Select all the "function Update" text and erase everything.
## Type just "trigger". We are going to find out how triggers work by searching the API Reference.
## Make sure the cursor is on "trigger" or select the whole word.
## Click the Help Menu and choose Unity API Reference to look it up.
## You can do this faster by pressing Command-' (Mac) or Control-' (Windows).
## Look at the results that come up for something that looks related to triggering an event when a collider is touched.
## Click Result 2: OnTriggerEnter.
## Select and copy the example code.
## Switch back to MonoDevelop.
## Erase the word trigger.
## Paste the example code into Fall.js.
## Delete the whole "Destroy" line.
## Your code should look like this now: 
function OnTriggerEnter( other : Collider ) { 
}
# '''Change the Destroy line to reload the current level instead.'''
## Select and delete the GameObject.Destroy line.
## Since we want to reload the same level, type "loadlevel" Your code should look like this: 
function OnTriggerEnter( other : Collider ) { loadlevel 
}
## Click "loadlevel" and click Help Menu / Unity API Reference to look it up.
## The first result is the one we want! Click Application.LoadLevel
## Copy the example code.
## Switch to MonoDevelop.
## Paste the example code on a blank line between the "function OnTriggerEnter {" and "}". 
Your code should look like this: 
function OnTriggerEnter( other : Collider ) { Application.LoadLevel("Highscore"); 
}
## Change Application.LoadLevel("Highscore"); to "Application.LoadLevel("level1");" 
Your code should look like this: 
function OnTriggerEnter( other : Collider ) { Application.LoadLevel("level1"); 
}
## Save your code.
## Switch to Unity.
## Save your scene and name the scene file "level1".
## If you get an error about Build Settings, make sure to add it by going to File/Build Settings/Add Current.
## Hit PLAY to test it.
## When you jump off the edge and hit the lava, do you get teleported back to the top?
## If so, you are now a game developer, congratulations!
# '''Expand your game level '''
## Make 10 cube platforms and position them with gaps so that you have to jump between the cubes.
## Arrange the cube gaps at increasing distances and difficulties until the last couple jumps are quite difficult but not impossible for you.
## Make sure that you always get teleported back to the start if you fall from anywhere in the level.
# '''Make a portal that teleports between two levels.'''
## Make a vertical wide narrow cube that looks like a door. (2.0, 3.0, 0.5 scale)
## Set it to IsTrigger = true (checked).
## Duplicate the Fall.js script.
## Rename the duplicate script Portal.js.
## Attach Portal.js to the door by dragging it onto the object or its name in the Hierarchy list part of the window.
## Double click Portal.js.
## Add a new line at the top that reads "var levelToLoad : String = "level2";
## Replace "level1" with levelToLoad. 
Your code should look like this: 
var levelToLoad : String = "level2"; 
function OnTriggerEnter( other : Collider ) { Application.LoadLevel( levelToLoad ); 
}
## '''Make level2 so your portal has somewhere to go:'''
### File Menu / New Scene.
### Save the scene as "level2".
### Repeat steps 1-9 to make yourself a new level with a new or duplicate level1 as a starting template and rename the duplicate "level2"
### Make sure the name of the second level matches the name referred to in the portal.js script
### Load the first level again
### Play the first door
### If it takes you to the first level again, congrats!

=== Code Hero 102: Coins ===

Once you've made your first level have obstacles to avoid falling forever, it's time to add some objectives for your players to seek out.

* Create a Coin.js script
* Create a World.js script
* Make Coin.js a trigger that sends an AddCoin message to World.js
* Make World.js increment a coin integer variable and display it OnGUI.

This is Unity 101 in 10 minutes and you are about to create your first video game!

# '''Download, install and open [[Unity]].'''
# '''Create your first project and your first playable game scene.'''
## Create a new project by clicking File Menu / New Project ''(You can play with Angry Bots later!)''
## Click the Character Controller checkbox to import it.'' (You can import more stuff later from Assets Menu / Import.)''
## In Hierarchy's top left corner click Create and click Cube. ''(You can also click Game Object menu/Create Other/Cube.)''
## Click the fourth tool in the top right or hit 'R'.
## '''Resize''' the cube wide and flat ( scale 50,1,50 ) as a ground by dragging the colored boxes on its sides.
## Click its name in the top right Inspfector. Name it "ground".
## Drag a character controller from the Project view to the Scene view or Hierarchy.
## Position it above your ground cube.
#
# '''Test It!'''
## Click '''PLAY''' button top center.
## Your game is now running! Walk around with WASD and look around with the mouse.
## '''Click PLAY''' button again to stop.
## Remember: NEVER edit the game while it is playing or you'll lose changes, always stop it first.
## '''Save''' your Scene which is like your first level of your game and name it "level1".
## You can make it awesome in the next steps!
#
# '''Decorate your scene!'''
## Add point lights to make it look cool and more cubes to jump around on.
## Next we'll learn how to add a script to stop yourself from falling infinitely off the edge.
#
# '''Create a lava cube to avoid falling infinitely'''
## Select the "ground" cube.
## Edit Menu / Duplicate it.
## Move the duplicate down.
## Rename the duplicate "lava".
## Resize it to make it wider (100,1,100 scale) so it will catch you if you fall.
## Hit '''PLAY''' and try falling off the edge. Notice it catches you but you can walk further and fall off the edge still.
## Hit '''PLAY''' again to stop it.
## Click the "lava" cube to select it.
## In the Inspector, look for the Collider component.
## Check the "Is Trigger" checkbox.
## Hit '''PLAY''' and try falling off the edge. Notice it you now fall right through the lava cube without stopping.
## Hit '''PLAY''' again to stop the game.
#
# '''Create your first script code to avoid falling infinitely'''
## In the Project pane, click Create / Javascript.
## Rename the javascript "Teleport". Click it once to make the name changeable.
## Drag the Teleport script to the "lava" cube in the Scene, the Hierarchy or the bottom of its Inspector to attach it.
## Look in the inspector to confirm it is attached to the "lava" cube.
#
# '''Edit the script to handle an OnTriggerEnter event:'''
## Double-click the "Teleport" javascript to edit it.
## Wait for MonoDevelop to load up.
## Double-click the "Teleport" javascript again if it is not already open to edit it.
## Select all the "function Update" text and erase everything.
## Type just "trigger". We are going to find out how triggers work by searching the API Reference.
## Make sure the cursor is on "trigger" or select the whole word.
## Click the Help Menu and choose Unity API Reference to look it up.
## You can do this faster by pressing Command-' (Mac) or Control-' (Windows).
## Look at the results that come up for something that looks related to triggering an event when a collider is touched.
## Click Result 2: OnTriggerEnter.
## Select and copy the example code.
## Switch back to MonoDevelop.
## Erase the word trigger.
## Paste the example code into Teleport.js.
## Delete the whole "Destroy" line.
## Your code should look like this now: function OnTriggerEnter( other : Collider ) { 
}
#
# '''Change the Destroy line to reload the current level instead.'''
## Select and delete the GameObject.Destroy line.
## Since we want to reload the same level, type "loadlevel" Your code should look like this: 
 
function OnTriggerEnter( other : Collider ) { loadlevel 
} 
## Click "loadlevel" and click Help Menu / Unity API Reference to look it up.
## The first result is the one we want! Click Application.LoadLevel
## Copy the example code.
## Switch to MonoDevelop.
## Paste the example code on a blank line between the "function OnTriggerEnter {" and "}". 
Your code should look like this: 
 
function OnTriggerEnter( other : Collider ) { Application.LoadLevel("Highscore"); 
} 
## Change Application.LoadLevel("Highscore"); to "Application.LoadLevel("level1");" 
Your code should look like this: 
 
function OnTriggerEnter( other : Collider ) { Application.LoadLevel("level1"); 
} 
## Save your code.
## Switch to Unity.
## Save your scene and name the scene file "level1".
## If you get an error about Build Settings, make sure to add it by going to File/Build Settings/Add Current.
## Hit PLAY to test it.
## When you jump off the edge and hit the lava, do you get teleported back to the top?
## If so, you are now a game developer, congratulations!
#

=== Here's what your first level should look like: ===

[[Image:Unity101LavaTriggerScript.jpg]]

== Congratulations! You're ready for the next tutorial: ==

== Part 2: Coin & World Components ==

=== More Ways To Make Your First Level Fun ===

Now that you have a basic platforming game level that you can jump around in and try not to fall off the edge, it is time to make your level exciting and fun.

# '''Make your lava red'''
## In '''Project''' panel, click '''Assets'''.
## Click '''Create''' and click '''Material'''.
## Type the name "'''LavaMaterial'''" and hit return.
## In the '''Inspector''' panel, there's a white box to the right of '''Main Color'''. Click it.
## In the '''Color''' panel that pops up, pick a reddish color and close the Color panel.
## In '''Project''' panel, drag the LavaMaterial into the '''Hierarchy''' panel to drop it on the '''Lava '''object.
# '''Expand your game level'''
## Make 10 cube platforms and position them with gaps so that you have to jump between the cubes.
## Arrange the cube gaps at increasing distances and difficulties until the last couple jumps are quite difficult but not impossible for you.
## Make sure that you always get teleported back to the start if you fall from anywhere in the level.
#
# '''Make a portal that teleports between two levels.'''
## Make a vertical wide narrow cube that looks like a door. (2.0, 3.0, 0.5 scale)
## Set it to IsTrigger = true (checked).
## Duplicate the Teleport.js script.
## Rename the duplicate script Portal.js.
## Attach Portal.js to the door by dragging it onto the object or its name in the Hierarchy list part of the window.
## Double click Portal.js.
## Add a new line at the top that reads "var levelToLoad : String = "level2";
## Replace "level1" with levelToLoad. 
Your code should look like this: 
 
var levelToLoad : String = "level2"; 
function OnTriggerEnter( other : Collider ) { Application.LoadLevel( levelToLoad ); 
} 
## '''Make level2 so your portal has somewhere to go:'''
### '''File Menu / New Scene'''.
### '''File menu / Save''' the scene as '''"level2"'''.
### Repeat steps 1-9 to make yourself a new level with a new or duplicate '''"level1"''' as a starting template and rename the duplicate '''"level2"'''.
### Make sure the name of the second level matches the name referred to in the '''Portal.js''' script.
### Add each of the levels in your game to the Build Settings list by clicking '''File Menu / Build Settings...''' and clicking''' Add Current '''after loading each one'''.'''
### Load the first level again.
### Play and walk into the first door.
### If it takes you to the first level again, congrats!
### '''Make the door white:'''
#### In '''Project''' Panel, click '''Create''' / '''Material'''.
#### I
##
#

The expanded Telport script which can go between levels or reload the same level:

#pragma strict 
var levelToLoad : String = ""; 
var reload : boolean = false; 
function OnTriggerEnter ( other : Collider ) { if ( reload ) { Application.LoadLevel(Application.loadedLevel); } if ( levelToLoad != "" ) { Application.LoadLevel(levelToLoad); } 
}

Once you expand your level with more cubes for walls and jumping plus a portal to the next level, it might look like something like this:

[[Image:platformingCubes.png]]

@@ Line 38: / Line 38: @@
 ## Add point lights to make it look cool and more cubes to jump around on.
 ## Next we'll learn how to add a script to stop yourself from falling infinitely off the edge.
 # '''Create a lava cube to avoid falling infinitely'''
 ## Select the "ground" cube.

Gamebridge/Trigger Tutorial - Revision history

Lxpk: Lxpk moved page Gamebridge/Unity Trigger Tutorial to Gamebridge/Trigger Tutorial

Lxpk: Lxpk moved page Unity Trigger Tutorial to Gamebridge/Unity Trigger Tutorial

Lxpk at 06:41, 4 November 2015

Lxpk: more fun to read

Lxpk: Created page with " Learning to make games with Unity is easy with the right tutorials and resources. * Coding Jar Tutorials ** Self-paced tutorials with guided voice and automatically advanci..."