[BEHAVIOR] Chipmunk Physics

getting another error when I try to add a joint

TypeError: Cannot read property 'inst' of undefined

at Exps.jointOtherUID (http://localhost:50000/rojoChipmunkBeta ... js:7921:36)

at ExpNode.eval_object_behavior_exp (http://localhost:50000/expressions.js:333:29)

at Parameter.get_exp (http://localhost:50000/eveng.js:2049:19)

at Condition.run_static (http://localhost:50000/eveng.js:1297:41)

at EventBlock.run (http://localhost:50000/eveng.js:866:46)

at EventSheet.run (http://localhost:50000/eveng.js:224:7)

at Runtime.logic (http://localhost:50000/preview.js:2404:36)

at Runtime.tick (http://localhost:50000/preview.js:2066:8)

at tickFunc (http://localhost:50000/preview.js:629:38)

the object is set to -1 because i'm using layout coordinates(it's set to layout)..

Prominent

I do need to make some docs with examples in one spot. It's on my todo.

The chipmunk library won't let you destroy shapes or joints under post collide. You could do the actions after a wait action for now. I'll try to work up something so that's done automatically in the plugin.

Ah, I missed something there with joints. Thanks for the report.

TiAm

I saw that. There are some nice additions for sure. I may try my hand at updating the js port to include them. That vector processing stuff likely isn't usuable though.

Updated to version 1.7.

Download link in first post.

* Fixed: Crash with jointOtherUID expression when joint was connected to world (-1).

* Fixed: "On pre step" and "On post collide" would crash if physics objects or joints were added and removed in the condition.

* Added: "area" expression now works with tilemaps

* Change: Tilemaps now use the "Collision Shape" property. They now support None, box and polygon. Circle and segment will be treated like none.

* Change: "Set collision shape" action works with tilemaps as per the above.

* Fix/optimization: Chipmunk objects will not needlessly update shapes if disabled.

Prominent

Thanks for the bug reports as always.

-cheers

got this error when I tried opening construct..

can;t open project now since the behavior doesn't load.

---------------------------

HTML5 exporter

---------------------------

Unable to load behavior in 'C:\Program Files\Construct 2\exporters\html5\behaviors\rojoChipmunk\': Javascript exception in file 'edittime.js' line 171: SyntaxError: Unexpected string

Code line:

or Polygon. Circle and Segment are the same as None with tilemaps."", "setCol

Stack trace:

SyntaxError: Unexpected string

This behavior will not be available in the editor.

---------------------------

OK

---------------------------

if I remove the extra " it works.

also, here's an error I get when I try to add a joint on post collide:

TypeError: Cannot set property 'tag' of undefined

at Acts.addPinJoint (http://localhost:50000/rojoChipmunkBeta ... js:7566:13)

at Action.run_object (http://localhost:50000/eveng.js:1839:10)

at EventBlock.run_actions_and_subevents (http://localhost:50000/eveng.js:929:38)

at EventBlock.run (http://localhost:50000/eveng.js:886:9)

at EventBlock.run_subevents (http://localhost:50000/eveng.js:994:11)

at EventBlock.run_actions_and_subevents (http://localhost:50000/eveng.js:933:8)

at EventBlock.run (http://localhost:50000/eveng.js:886:9)

at Runtime.executeSingleTrigger (http://localhost:50000/preview.js:4565:10)

at Runtime.triggerOnSheetForTypeName (http://localhost:50000/preview.js:4484:16)

at Runtime.triggerOnSheet (http://localhost:50000/preview.js:4416:13)

at Runtime.trigger (http://localhost:50000/preview.js:4393:12)

at mypostSolve [as postSolve] (http://localhost:50000/rojoChipmunkBeta ... js:6441:12)

R0J0hound , There's an issue with resizing objects and then adding joints- the joints aren't added at the correct position. I've attached an example.

Hopefully that can be fixed- I don't really want to put a Wait event whenever I want to add a joint.

Thanks for the bug reports. Looks like I need to beef up my testing before uploading updates. I'll get a fix going tomorrow and it should be very fixable.

Hi R0j0, I just downloaded v1.7 and found it won't load in C2 - I receive the following error:

[attachment=0:3pkc97lh][/attachment:3pkc97lh]

When I edit out the extra " then it loads correctly - just a type-o. Strange no one else has encountered this, though... I'm running c2 r195 64 bit.

Some great updates, by the way!!

PS - this plugin is outstanding. You realize that I am going to have to re-write my game to incorporate it!! Do you take beverage donations?

Updated to 1.7a:

* Fixed: Edittime.js typo

* Fixed: Error when adding joints on "post collide"

Prominent

I can't wrap my head around that resizing then adding a joint bug. For now waiting a tick before adding the joint to the resized object works. I'll have to re-visit it later.

R0J0hound , I think it has something to do with imagepoint 0. The joint gets added correctly to imagepoint 1 if imagepoint 0 is in the center of the sprite, but if imagepoint 0 is off-center then it doesn't work. Maybe the resizing isn't taking into consideration where imagepoint 0 is.. or something like that.. Hope that helps you figure out the issue with it.

I believe I found the issue. The shape isn't updated till the next frame. I just need to update it if needed when adding joints. It appears to be working, but I need to test a few more things. It should be ready tomorrow.

Kudos! I just started a code revision on my game project and was planning to switch the physics engine - R0j0hound really saved my day! Excellent job as always =)

Thanks also to Prominent, was facing the same issue. Wish a great weekend for you guys!

Update 1.8:

* Fixed: changing object shape then attaching a joint in the same frame was positioning incorrectly.

-cheers

R0J0hound , thanks! I'll let you know if I come across anything else.

I'm wondering if it is possible to have an expression that retrieves the x,y coordinates of a joint given its' tag? Would be useful since I have to use instance variables to record where I placed the joints, but if I could just find them based on their tag, that would be less complicated I think. What do you think?