In memory, the screen variable keeps track of the current screen or game state. The current selection on each screen is saved in different variables.

Menu screens

Value of screen	Screen
0	Black screen. Can not be reached in-game and can not be exited.
1	Black screen. Can not be reached in-game and can not be exited.
2	Start screen ("hi [name]")
3	Level pack select ("edge challenge")
4	Normal level select
5	Bonus level select
6	Extended level select
7	Bonus level message. Can not be reached in-game.
8	Instructions
9	Options
10	Credits
11	Scores select
12	Normal scores
13	Bonus scores
14	Extended scores
15	Exit game
16	Level loading screen
17	In level
18	Pause screen
19	Level clear screen
20	Normal all clear screen and credits
21	Bonus all clear screen and credits
22	Extended all clear screen and credits
23	Black screen. Can not be reached in-game and can not be exited.

Screen transitions

Here is a graph of all possible screen transitions:

Notes:

• Colored arrows (or text) denote that a transition can also be triggered by pressing certain buttons, regardless of the current selection. These buttons are:

  • Red: escape, backspace or right-click
  • Green: space or enter
  • Yellow: a
  • Blue: d

• Screen 7 only appears if you are not a member of the EDGE Steam community. It looks like this:

  

• Screen 16 (loading screen) always directly leads to screen 17 (in level), with no way for the player to control this transition

Buttons and other screen elements

Each screen has its own memory region at edge.exe+1F91B4, 8*[value of screen]+44, [second offset] which handles button selections, animations etc.

Some second offsets with universal function are:

• 4: Animation timer (fade in)
• 8: Animation timer (fade out)
• C: Previous selection
• 10: Button selection

Level select

TODO

Screen scroll

In the credits (accessed through options or the all clear screen), the pointer edge.exe+1F91B4, 94/E4/EC/F4, 4C (as a float) shows the scroll position of the screen, ranging from -4.0 to 6060.0 (6068.0 on all clear screen). The pointer edge.exe+1F91B4, 94/E4/EC/F4, 50 (as float) shows the scroll speed, changing from 4.0 to 16.0 when you hold up, down, space, enter, or the left mouse button.

On screens where the player is able to scroll (scores, instructions), the pointers edge.exe+1F91B4, A4/AC/B4, 68/6C/70 for scores and edge.exe+1F91B4, 84, 24/28/2C for instructions show the maximal scroll position, current scroll position and target scroll position respectively. Smooth scrolling is achieved by setting the target scroll position and then smoothly changing the current scroll position until it matches the target.

Other

TODO

Unintended transitions

Here is a table detailing what happens when you manually change the screen value. All transitions not listed here work as expected.

Special conditions	From	To	Effect
Screen 3 has not been manually loaded yet	Any	3	Shows the screen with "new game" and "instructions" buttons that can otherwise only be seen on a newly installed game.
	Any except 17-22	0, 1	Black screen
	Any except 17	4-6, 8, 11-14	Crash
No level loaded before	Any except 17	16	Show blank loading screen and crash
Level loaded before	Any except 17	16	Black screen
	Any except 17-22	17	Black screen
No level loaded before	Any except 17-22	18	Crash
Level loaded before	Any except 17-22	18	Show pause menu with black background. Selecting "resume", "last checkpoint" or "retry" will crash.
No level loaded before	Any except 17-22	19	Show the clear screen appearing and crash
Level loaded before	Any except 17-22	19	Show a fully functional clear screen with black background.
All clear screen has not been reached properly yet	Any except 17-22	20-22	Show all clear screen with black background and no congratulations message. Clicking "next" won't show the credits but take you back to screen 2.
All clear screen has been reached properly before, but credits have not been watched yet	Any except 17-22	20-22	Show normal all clear screen and credits
All clear screen has been reached properly and credits have been watched before	Any except 17-22	20-22	Show all clear screen with "GAME OVER"
	Any except 17	23	Black screen
	Any except 17	Any higher than 23	Crash
	17	Any except 18-22	Disable movement and unload the minimap.
	17	18, 20-22	Disable movement and unload the minimap. Move the camera to the left but show no screen there.
	17	19	Disable movement and unload the minimap. Make all prisms have their glow effect.
	18-22	x (except 18-22)	Same as from Any except 17-22 to x, but show the skybox of the current level instead of a black background.
	18	20-22	Same as from Any except 17-22 to 20-22, but show the current level instead of a black background.
Clear screen has not been reached properly	19	18	Show normal, fully functional pause menu
Clear screen has been reached properly	19	18	Show pause menu. Selecting "resume" will make the clear screen reappear; Changing to 18 again will show a pause menu with no buttons. Selecting "last checkpoint" will return to last checkpoint and allow you to play normally, but continuously play the cube finishing animation. Everything else works as expected.
Clear screen has been reached properly	19	20-22	Crash
All clear screen has been reached properly	20-22	18, 19	Show pause menu or clear screen. Selecting "resume", "last checkpoint", "retry" or "next" allows you to play the credits level.

Memory Pointers and Offsets

Variable Name	Pointer and Offsets	Comment
Menu screen	edge.exe+1F9080, 50	See Menu screens table for values
Start screen selection	edge.exe+1F91B4, 54, 10	0 if the "edge challenge" button is highlighted, 1 if "scores" etc.
Level pack selection	edge.exe+1F91B4, 5C, 10
Level select back/go button	edge.exe+1F91B4, 64/6C/74, 10	Normal/Bonus/Extended level select. Is set to 1 if "back" is pressed, 2 if "go" is pressed, -1 if either was pressed but the mouse was moved away, 0 when level select is loaded
Bonus level message back/join button	edge.exe+1F91B4, 7C, 10
Instructions back button	edge.exe+1F91B4, 84, 10
Instructions edge time	edge.exe+1F91B4, 84, 34
Options selection	edge.exe+1F91B4, 8C, 10
Scores selection	edge.exe+1F91B4, 9C, 10
Scores back button	edge.exe+1F91B4, A4/AC/B4, 10	Normal/Bonus/Extended scores screen
Exit game selection	edge.exe+1F91B4, BC, 10
Pause menu selection	edge.exe+1F91B4, D4, 10
Pause options selection	edge.exe+1F91B4, D4, 50
Pause main menu selection	edge.exe+1F91B4, D4, 54
Clear screen selection	edge.exe+1F91B4, DC, 10
All clear and credits selection	edge.exe+1F91B4, E4/EC/F4, 10	Normal/Bonus/Extended credits screen