User Use Cases


User Starts Program
	Main
	1.1 Main menu appears with options (new game, load, instructions, quit)


User views instructions
	Main
	1.1 Intruction page appears
	2.1 Returns to main menu

	
User Opens a new game
	Main
        1.1 Start at the begining of level 1

	Alternate
	1.2 User already has another game open
	2.2 Prompt user "Do you want to save current game?"
	3.2 User clicks No
	4.2 Start at level 1
		
	Alternate
	3.3 User clicks Yes
	4.3 [see "User Saves"]
	5.3 Start at level 1


User Quit Current Game
	Main
	1.1 Prompt user "Do you want to save current game?"
	2.1 User clicks No
	3.1 Returns to main menu screen

	Alternate
	2.2 User clicks Yes
	3.2 [see "User Saves"]
	4.2 Returns to main menu screen	  


User Saves
	Main
	1.1 Prompt for file name & location
	2.1 Save data to a file
	3.1 Display "Save successful"
	
	Alternate
	2.2 File name at the location already exists
	3.2 Prompt "File already exists. Do you want to save over file?"
	4.2 User clicks Yes
	5.2 Overwrite data to file
	6.2 Display "Save successful"

	Alternate
	3.3 User clicks No
	4.3 Prompt for file name & location [goto 1.1]


User Loads
	Main
	1.1 Prompt for file name and location
	2.1 Load the data, start at the begining of appropriate level
	
	Alternate
	1.2 File doesn't exist
	2.2 Prompt for file name and location [goto 1.1]

	Alternate
	1.3 User has another game running
	2.3 Prompt user "Do you want to save current game?"
	3.3 User clicks yes
	4.3 [see "User Saves"]

	Alternate
	3.4 User clicks no
	4.4 Load the data, start at the begining of appropriate level
	

User Pauses
	Main
	1.1 Freeze all movement (Jeff, enemies, objects, etc)
	2.1 Screen is shadowed dark, and the option menu appears
	3.3 User clicks Return to game
	4.1 Undarken screen, resume all movement
	
	Alternate
	2.2 User clicks Save game 
	3.2 [see "User Saves"]

	Alternate
	2.3 User clicks Load game
	3.3 [see "User Loads"]

	Alternate
	2.4 User clicks Quit
	3.4 [see "User Quits"]


User Controls Left/Right
	Main
	1.1 [see "Jeff moves left/right"]

	Alternate
	1.2 Jeff is on a ladder
	2.2 Change Jeff's facing (no horizontal movement while on a ladder)


User Controls Up
	Main
	1.1 Nothing happens

	Alternate
	1.2 Jeff is on a ladder
	2.2 [see "Jeff moves up/down on ladder"]

	Alternate
	1.3 Jeff is infront of a ladder
	2.3 [see "Jeff gets on a ladder"]


User Controls Down
	Main
	1.1 [see "Jeff ducks"]

	Alternate
	1.2 Jeff is on a ladder
	2.2 [see "Jeff moves up/down ladder"]

	Alternate
	1.3 Jeff is on top of a ladder
	2.3 [see "Jeff gets on a ladder"]


User Controls Jump
	Main
	1.1 [see "Jeff Jumps"]

	Alternate
	1.2 Jeff is on a ladder
	2.2 Jeff Jumps off the ladder
	3.2 Jeff is no longer on the ladder


User Controls Weapon Switch
	Main
	1.1 {Case "1"} Switch to weapon Katana
	    {Case "2"} Switch to weapon Fireball
	    {case "3"} Switch to weapon Tomahawk
	    {case "4"} Switch to weapon Laser
	
	Alternate
	1.2 Jeff doen't have that weapon yet, no weapon switch


User Controls Sprint
	Main 
	1.1 Put Jeff into sprinting mode


User Controls Attack
	Main
	1.1 {case "Katana"} [see "Jeff attacks with Katana"]
	    {case "Fireball"} [see "Jeff attacks with Fireball"]
	    {case "Tomahawk"} [see "Jeff attacks with Tomahawk"]
	    {case "Laser"} [see "Jeff attacks with Laser"]