Evolve has no GUI it can only be used in the console window however there are commands that can improve the user experience.
To clear the console window and position the cursor at the top left hand corner use the con_cls command.
The foreground and back ground colour can be changed using the con_colour command.
This takes two arguments the first is the foreground colour and the second is the background colour.
The follow constant values can be used where the constants with _INT are high intensity versions of the colour.
#BLACK, #BLUE, #GREEN, #CYAN, #RED, #MAGENTA, #YELLOW, #WHITE, #BLACK_INT, #BLUE_INT, #GREEN_INT, #CYAN_INT, #RED_INT, #MAGENTA_INT, #YELLOW_INT, #WHITE_INT
Alternatively you can write the colour values as bytes where the bits values relate to the following colours.
Blue = 1
Green = 2
Red = 4
High Intensity = 8
So for white the value would be 7 and for blue the value would be 1.
//---------------------------------------
// File: Colours.e
//---------------------------------------
//---------------------------------------
// Block: go
//---------------------------------------
block Go
Background = 0
while Background < 16
Foreground = 0
while Foreground < 16
con_colour Foreground Background
out "*"
++ Foreground
_while
++ Background
_while
con_colour 15 0
new_line
con_colour #BLACK #WHITE
outl "BLACK"
con_colour #BLUE #BLACK
outl "BLUE"
con_colour #GREEN #BLACK
outl "GREEN"
con_colour #CYAN #BLACK
outl "CYAN"
con_colour #RED #BLACK
outl "RED"
con_colour #MAGENTA #BLACK
outl "MAGENTA"
con_colour #YELLOW #BLACK
outl "YELLOW"
con_colour #WHITE #BLACK
outl "WHITE"
con_colour #BLACK_INT #WHITE
outl "BLACK Intense"
con_colour #BLUE_INT #BLACK
outl "BLUE Intense"
con_colour #GREEN_INT #BLACK
outl "GREEN Intense"
con_colour #CYAN_INT #BLACK
outl "CYAN Intense"
con_colour #RED_INT #BLACK
outl "RED Intense"
con_colour #MAGENTA_INT #BLACK
outl "MAGENTA Intense"
con_colour #YELLOW_INT #BLACK
outl "YELLOW Intense"
con_colour #WHITE_INT #BLACK
outl "WHITE Intense"
_block
Text can be positioned anywhere on the screen with the con_xy command, this simply sets the cursor position at the X and Y coordinates passed as arguments.
//---------------------------------------
// File: XY.e
//---------------------------------------
//---------------------------------------
// Block: go
//---------------------------------------
block Go
con_cls
con_title "Moving Evolve"
Key = 0
con_cursor false
while Key == 0
key_in Key
X = 0
while X < 20
++ X
con_xy X 5
out " evolve"
sleep 50
_while
con_xy X 5
out " "
new_line
_while
con_cursor true
_block
If you have studied the previous example will have noticed two additional commands
con_title This sets the title of the console window. Unless you change the console window then evolve will display the name of the currently loaded file as the title.
con_title “Name”
con_enablecursor This enables and disables the cursor, if you are displaying data then it is often cleaner to turn the cursor off unless you are waiting for user input.
con_enablecursor true