Inline Conditions Tutorial - Revision history

PhiNotPi: Fixed typos

2014-02-15T01:36:13Z

Fixed typos

Shasta: /* If, Else-If, and Else */

2009-03-30T22:35:44Z

‎If, Else-If, and Else

Prsn828: /* Else */

2009-03-30T22:16:30Z

‎Else

Shasta: In-Gene Conditions tutorial moved to Inline Conditions Tutorial: Better name

2009-03-29T19:27:18Z

In-Gene Conditions tutorial moved to Inline Conditions Tutorial: Better name

Shasta at 19:26, 29 March 2009

2009-03-29T19:26:15Z

Shasta: New page: =Inline Conditions Tutorial= ==Introduction== In this tutorial I will assume you have a basic understanding of how the Darwinbots DNA system works. If you do not, you may still be able to ...

2009-03-29T19:25:50Z

New page: =Inline Conditions Tutorial= ==Introduction== In this tutorial I will assume you have a basic understanding of how the Darwinbots DNA system works. If you do not, you may still be able to ...

New page

=Inline Conditions Tutorial=
==Introduction==
In this tutorial I will assume you have a basic understanding of how the Darwinbots DNA system works. If you do not, you may still be able to understand the tutorial, but please look at one of the other tutorials available.
==Basics==
To use inline conditions, you must first understand how they work.
===Commands===
If you don't already know the logical comparison and logic operators, read up on them on the [[Operator]] page. Take special note of the operators that directly affect the boolean stack: [[clearbool]], [[dropbool]], [[dupbool]], [[swapbool]], and [[overbool]].
===How the boolean stack affects DNA expression===
Lets look at an example:
start
true
-1 .shoot store
false
10 .up store
stop
In this, the bot will always be shooting, and never move up. Why? The logical comparison and logic operators are ''always'' evaluated. All the other bits of DNA will be evaluated depending on what value ''is on the top of the boolean stack''.
==If, Else-If, and Else==
===If===
If statements are easy, so here is a quick example and we will move on:
start
*.eye5 0 != *.refeye *.myeye != and
'Code to be run when the bot is looking at an enemy
*.nrg 1000 >
'Reproduction code or similar
stop
===Else===
Lets continue on with the eye example:
start
*.eye5 0 != *.refeye *.myeye != and
'Deal with enemy
not
'Deal with family
stop
Here the not acts like an else statement, it anything after it will only be evaluated if the proceeding statement is false
===Nesting===
This is were everything starts to get complex. So lets write out what we want to do:
If *.eye5 0 !=
If *.refeye *.myeye !=
If *.refeye 0 =
'Deal with veggie
Else
'Eat
Else
'Deal with family
Else
'Find food
Which translates to:
*.eye5 0 != dupbool
*.refeye *.myeye != and dupbool
*.refeye 0 = overbool overbool and
'Deal with veggie
dropbool not and
'Eat
dropbool not
'Deal with family
dropbool not
'Find food
Lets step through this section by section:
*.eye5 0 != dupbool
The dupbool here is so we leave the orginal condition intact for the last else statement
*.refeye *.myeye != and dupbool
Here we use dupbool again so we can use the value of the and statement again for the second to last else statement, see a pattern here?
*.refeye 0 = overbool overbool and
Here we are duplicating the top two values on the stack as we will use them both again later, but also want to and them together.
dropbool not and
Here we remove the top value from the stack (the last and's combined value), flip the value of the refeye comparison, then and the result to the previous condition (*.refeye *.myeye !=).
dropbool not
This one works exactly the same both times, it removes the top, and flips the second value (These were the reasons for the dropbools earlier).

← Older revision		Revision as of 19:26, 29 March 2009
Line 1:		Line 1:
−	~~=Inline Conditions Tutorial=~~
	==Introduction==		==Introduction==
	In this tutorial I will assume you have a basic understanding of how the Darwinbots DNA system works. If you do not, you may still be able to understand the tutorial, but please look at one of the other tutorials available.		In this tutorial I will assume you have a basic understanding of how the Darwinbots DNA system works. If you do not, you may still be able to understand the tutorial, but please look at one of the other tutorials available.

@@ Line 4: / Line 4: @@
 To use inline conditions, you must first understand how they work.
 ===Commands===
-If you don't already know the logical comparison and logic operators, read up on them on the [[Operator]] page. Take special note of the operators that directly affect the boolean stack: [[clearbool]], [[dropbool]], [[dupbool]], [[swapbool]], and [[overbool]].
+If you don't already know the logical comparison and logic operators, read up on them on the [[Operator]] page. Take special note of the operators that directly affect the Boolean stack: [[clearbool]], [[dropbool]], [[dupbool]], [[swapbool]], and [[overbool]].
-===How the boolean stack affects DNA expression===
+===How the Boolean stack affects DNA expression===
 Lets look at an example:
   start
@@ Line 13: / Line 13: @@
 .up store
   stop
-In this, the bot will always be shooting, and never move up. Why? The logical comparison and logic operators are ''always'' evaluated. All the other bits of DNA will be evaluated depending on what value ''is on the top of the boolean stack''.
+In this, the bot will always be shooting, and never move up. Why? The logical comparison and logic operators are ''always'' evaluated. All the other bits of DNA will be evaluated depending on what value ''is on the top of the Boolean stack''.
 ==If, Else-If, and Else==
 ===If===
@@ Line 58: / Line 58: @@
 Lets step through this section by section:
   *.eye5 0 != dupbool
-The dupbool here is so we leave the orginal condition intact for the last else statement
+The dupbool here is so we leave the original condition intact for the last else statement
   *.refeye *.myeye != and dupbool
 Here we use dupbool again so we can use the value of the and statement again for the second to last else statement, see a pattern here?

@@ Line 66: / Line 66: @@
 Here we remove the top value from the stack (the last and's combined value), flip the value of the refeye comparison, then and the result to the previous condition (*.refeye *.myeye !=).
   dropbool not
-This one works exactly the same both times, it removes the top, and flips the second value (These were the reasons for the dropbools earlier).
+This one works exactly the same both times, it removes the top, and flips the second value (These were the reasons for the dupbools earlier).

@@ Line 31: / Line 31: @@
     'Deal with family
   stop
-Here the not acts like an else statement, it anything after it will only be evaluated if the proceeding statement is false
+Here the not acts like an else statement, anything after it will only be evaluated if the proceeding statement is false
 ===Nesting===
 This is were everything starts to get complex. So lets write out what we want to do:

← Older revision	Revision as of 19:27, 29 March 2009
(No difference)