[Plugin] Extra Expressions

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- Mipey
- - Joined 16 Jan, 2009
 - 97 topics • 1,858 posts
- 1
- 30 Oct, 2011
- Quote
Here is my very first plugin for Construct 2! *drum rolls*

Extra Expressions

Version: 1.1 (11th January)

Download ExtraExps.zip

To install, extract the contents to Construct 2\exporters\html5\plugins folder.

To use, simply start entering an expression where applicable, like this:
ExtraExpressions.char2code("A")

Tip: You can rename the object to a suitable shorthand, such as ExtExp

The plugin contains miscelaneous expressions that complement the system expressions. It is kind of pointless to create a plugin for each expression, so I decided to create Extra Expressions plugin containing all regularly used expressions.

LIST OF EXPRESSIONS

find(text, source) - Case sensitive version of system find expression. Find text within source text.

char2code(char) - Returns the charcode of a character (or the first character of string)

code2char(code) - Returns the character from charcode

cosp(a,b,t) - Cosine interpolation between points a and b

--- NEW ---

offsetX(x,angle,distance) - Returns the x position at an offset by distance at angle.

offsetY(y,angle,distance) - Returns the y position at an offset by distance at angle.

snap(number,gridsize) - Returns the number snapped to grid size (e.g. 25.5 snapped to 16 returns 32).

encode(string) - Encode the string to Base64

decode(base64) - Decode the encoded string from Base64

findToken(text,token,delimiter,case sensitivity (0 or 1)) - Find token in text, returns its index if found or -1 if not found.

---

Yeah, just a few expressions for now, but be sure that I will be adding more. Got any suggestions? Better terminology? Drop a line here!
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- zenox98
- - Joined 30 Jun, 2010
 - 65 topics • 5,992 posts
- 1
- 1 Nov, 2011
- Quote
Must have missed this post <img src="smileys/smiley5.gif" border="0" align="middle" />

Many thanks. These will be useful :)
- Wastrel
- - Joined 21 Sep, 2011
  - 27 topics • 325 posts
- 1
- 2 Nov, 2011
- Quote
Nice plug-in! I think it will be very useful.
- ludodesign
- - Joined 29 Jun, 2011
  - 11 topics • 137 posts
- 1
- 7 Nov, 2011
- Quote
I liked it.
- plauk
- - Joined 24 May, 2011
  - 10 topics • 102 posts
- 1
- 8 Nov, 2011
- Quote
Oooh, Snap will be useful!
- edisone
- - Joined 1 Jul, 2011
  - 3 topics • 233 posts
- 1
- 13 Nov, 2011
- Quote
Pretty great idea..thanks Mipey
- McKack
- - Joined 15 Sep, 2011
  - 2 topics • 42 posts
- 1
- 24 Nov, 2011
- Quote
Suggestion.

I don't know how hard it would be, and I'm guessing Scirra will introduce this some time in the future themselves. But I'm currently killing myself setting up level(layout) changing by having to make an event list of every single level available in a game bound to a variable's specific value for example, instead of a changing the level by expression.

Long story short: "Go to layout by expression".

Now, I guess it's technically an action, but an expression-dependent action so it might be a good addition to the Extra Expressions plugin.

For your consideration, thanks!
- Mipey
- - Joined 16 Jan, 2009
 - 97 topics • 1,858 posts
- 1
- 9 Dec, 2011
- Quote
Update!

I've added encode and decode expressions for Base64 string encoding/decoding. Base64 is a highly useful encryption method that prepares data for sending over HTTP protocol. It also has other uses, such as obfuscation.
- vtrix
- - Joined 24 Jul, 2011
  - 139 topics • 910 posts
- 1
- 9 Dec, 2011
- Quote
cool, certainly gonna try this out!
- Mipey
- - Joined 16 Jan, 2009
  - 97 topics • 1,858 posts
- 1
- 10 Dec, 2011
- Quote
Oops, forgot to sync the dropbox folder. Should be available now.

Note to self: don't work past midnight. And don't feed the gremlins any meat.
- GauVeldt
- - Joined 28 Dec, 2011
  - 4 topics • 30 posts
- 1
- 11 Jan, 2012
- Quote
I think the devs overlooked this one when they added the tokenXXX expressions...

How about adding this oversighted findToken expression for finding which position a token is at if it is in the list. 0 is a valid position doing things the C2 way so -1 may need to be used as the "not found" result.

eg 1: findToken("catacombs,cat,catastrophic,triplicate","cat",",") should yield 1

eg 1: findToken("catacombs,cat,catastrophic,triplicate","ata",",") should yield -1
- Mipey
- - Joined 16 Jan, 2009
  - 97 topics • 1,858 posts
- 1
- 11 Jan, 2012
- Quote
Added the findToken expression.

Parameters:

text - str - text to tokenize

token - str - token to find

delimiter - str - delimiter to split text by

case sensitivity - int - case insensitive (0), case sensitive (1)
- TheBricktop
- - Joined 8 Jul, 2010
  - 13 topics • 70 posts
- 1
- 12 Jan, 2012
- Quote
I dont know if its possible but could You add "collision at offset", would be perfect for my project :D
- Mipey
- - Joined 16 Jan, 2009
  - 97 topics • 1,858 posts
- 1
- 12 Jan, 2012
- Quote
That one is kind of complex and can be done with invisible sprites, so-called "detectors", so kind of redundant.
- TheBricktop
- - Joined 8 Jul, 2010
  - 13 topics • 70 posts
- 1
- 13 Jan, 2012
- Quote
You're right. Maybe an "Else" condition? (probably its very hard too), or "if not colliding" with sth or anything. (im just asking, not making any pressure or something)