[engine] Functions

[sv75]

If I get it right, WML lacks calculated functions.
How can I write something like this "enemy starting gold is minimum of 100 and player gold two times"?

Can I use LuaWML for it?

Sorry for my possible mistake.

[Velensk]

Give the enemy 100 gold. Store the players side. Use the [gold] the &<stored_side_variable>.gold to the the enemies side twice.

[sv75]

... and if I wish 1.5 multiplier?

[sv75]

Give the enemy 100 gold. Store the players side. Use the [gold] the &<stored_side_variable>.gold to the the enemies side twice.

I hate to be rude but it is one of the most ugliest things I ever seen in DSLs.

[Velensk]

A little more complex. Create a variable. After you've stored the side set the variable to <stored_side_variable>.gold. Modify the variable by a 1.5 modifier (look at the wiki if you don't know how). Then use the [gold] tag to give them gold equal to the variable.

You could if you prefer modify the side rather than using the gold tag if it seems more elegant to you.

[sv75]

Was syntax

Code: Select all

gold="if(someside.gold>150, max(1.5*someside.gold, 100), 80)"

discussed and rejected already?
Is there any chance some patch for this syntax will be accepted?

Sometimes I have some free time.

[Anonymissimus]

How can I write something like this "enemy starting gold is minimum of 100 and player gold two times"?

Code: Select all

[lua]
code=<< wesnoth.sides[2].gold = math.max(wesnoth.sides[1].gold * 2, 100) >>
[/lua]

in a prestart

[sv75]

Great, thanks.

[Sapient]

Also, the following will work if you have stored the side information in container named "someside"

Code: Select all

gold="$(if($someside.gold>150, max((15*$someside.gold)/10, 100), 80))"

Note: you cannot simply multiply by 1.5 because FormulaAI language does not yet support floating point numbers, AFAIK.

Also, there is a plan to make side information accessible via auto-stored variables. See the FutureWML page on the wiki for details.

Feel free to submit a patch.

[Iris]

Formulas support fixed-point numbers since r37742. Judging by the output of F { 3 * 0.5 }, it seems to use 3 decimal figures.

[Sapient]

Formulas support fixed-point numbers since r37742. Judging by the output of F { 3 * 0.5 }, it seems to use 3 decimal figures.

Ok, that means Wesnoth 1.7.3 or greater. Thanks... showing my outdatedness.

[thespaceinvader]

It would be reasonably easy to do *1.5 even without decimals. *3, then /2. Easy