Prominent's Forum Posts

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 29 Jan, 2015
  • Quote

  R0J0hound , I have a question about creating objects during the on post collide. When you create the same type of object as the object calling the post collide, and that object is created in the same position, size, as the original object- does that new object instantly call a post collide event before the current event is finished??

  I'm having strange results when I do this, and it seems like it gets called more than it should- so objects keep getting created even when I check to see if the position is the same then don't add one, etc, it still does..

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 28 Jan, 2015
  • Quote

  I commented out line 4277 and put in if(this.isStatic())return;

  Not sure how that will affect other things, but it's allowing me to continue developing stuff for now.

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• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
  • 1

  • 28 Jan, 2015
  • Quote

  R0J0hound , I get immediate error in my game now when collision happens.

  Error: Assertion failed: Body.activateStatic() called on a non-static body.

  at assert (http://localhost:50000/rojoChipmunkBeta ... or.js:51:9)

  at Body.activateStatic (http://localhost:50000/rojoChipmunkBeta ... .js:4277:2)

  at behinstProto.updateCOM (http://localhost:50000/rojoChipmunkBeta ... js:6967:10)

  at behinstProto.updateShape (http://localhost:50000/rojoChipmunkBeta ... .js:6714:8)

  at behinstProto.changeShapeCheck (http://localhost:50000/rojoChipmunkBeta ... js:7064:10)

  at behinstProto.postCreate (http://localhost:50000/rojoChipmunkBeta ... .js:6882:8)

  at Runtime.createInstanceFromInit (http://localhost:50000/preview.js:3247:28)

  at Runtime.createInstance (http://localhost:50000/preview.js:2885:15)

  at SysActs.CreateObject (http://localhost:50000/system.js:1337:33)

  at Action.run_system (http://localhost:50000/eveng.js:1743:20)

  edit: seems to happen if create object on post collision.

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 28 Jan, 2015
  • Quote

  mattb , I just realized you can use query closest to point to find if a point is inside an object..

  it's a condition though.. so can't use it like an expression. :\</p>

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 28 Jan, 2015
  • Quote

  Prominent you might already have tried these, but for checking internal points there's the Pick overlapping point condition, & for moving them back out the Custom Movement behavior has lots of 'push out solid' options.

  mattb , pick overlapping point doesn't work for tilemaps. But I can check what the tile is at a position, and if it is -1 it means it is outside of it. push out solid seems to push them out at closest direction, which may not be accurate. I'm using the normal to push it out so it seems to work.. Sometimes I get it still pushing it out at wrong directions, so maybe I can use push out solid if the normal sends it too far in weird cases...

  R0J0hound , do contact points remain after the on post collision event? Since it only fires once, there's no way to reference the contact point afterwards unless you store it in an instance variable- that's what it seems like anyways.

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 28 Jan, 2015
  • Quote

  Maybe there could be an expression that checks if a point is inside an object? Seems like a lot of cases the collision points are within the object, and I need a way to move them out, so I think testing if they're inside and then moving via their normal until they're out might work, but there's no expression to test if a point is in an object at the moment.

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 27 Jan, 2015
  • Quote

  R0J0hound , also, I'm noticing that if a line is created overlapping another object so that it extends across two sides, it'll position the line twice the depth rather than just once- this causes the line to be pushed out way too far. I'm guessing that it somehow positions it for each collision point, which is why it pushes it out too far.

  edit: actually.. to be more accurate, I tried to push it out via collision depth * normal.. but it seems to be pushing it too far out when it extends across to sides. If it extend across one side it pushes out fine.

  edit2: actually maybe it's fine. Since I move it to the collision point, and then push it, seems like I don't need to push it out. For some reason though, sometimes the collision point is inside objects, and I'm not sure how to get the collision point on the edge of the object when this happens..

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 27 Jan, 2015
  • Quote

  Also been getting this error.. not sure what is causing it though.. edit:seems to occur when a line collides in two places at the same time...

  Error: Assertion failed: Cannot remove a shape that was not added to the space. (Removed twice maybe?)

  at assert (http://localhost:50000/rojoChipmunkBeta ... or.js:51:9)

  at Space.removeShape (http://localhost:50000/rojoChipmunkBeta ... .js:3889:3)

  at behinstProto.updateShape (http://localhost:50000/rojoChipmunkBeta ... js:6642:16)

  at behinstProto.changeShapeCheck (http://localhost:50000/rojoChipmunkBeta ... js:6956:10)

  at behinstProto.getBody2 (http://localhost:50000/rojoChipmunkBeta ... .js:7598:8)

  at Acts.addPivotJoint (http://localhost:50000/rojoChipmunkBeta ... js:7643:20)

  at Action.run_object (http://localhost:50000/eveng.js:1843:10)

  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)

  EDIT: seems to occur when a line collides in two places at the same time...

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 27 Jan, 2015
  • Quote

  if it helps, this is the error I get about the angle thing..

  Error: Assertion failed: Internal Error: Attempting to set body's angle to NaN

  at assert (http://localhost:50000/rojoChipmunkBeta ... or.js:51:9)

  at Body.setAngleInternal (http://localhost:50000/rojoChipmunkBeta ... .js:1725:2)

  at Body.position_func (http://localhost:50000/rojoChipmunkBeta ... .js:1768:7)

  at Space.step (http://localhost:50000/rojoChipmunkBeta ... js:4998:14)

  at behinstProto.tick (http://localhost:50000/rojoChipmunkBeta ... js:6983:17)

  at Runtime.logic (http://localhost:50000/preview.js:2346:29)

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

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

• • Prominent
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  • • Joined 28 Apr, 2012
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  • 27 Jan, 2015
  • Quote

  R0J0hound , awesome..

  found a bug when you set object to immovable yes after adding a joint, it will cause an error.. I did this during on post collision- not sure if it happens outside of that.

  I'm also getting some errors sometimes- not sure why yet.. saying that can't set body angle to nan.. I think it happens when it tries to set angle towards position and the position is ontop of itself.. or something.. not sure though.. this happens during on post collision.

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 27 Jan, 2015
  • Quote

  R0J0hound , okay I found the bug..

  the capx has two instances that fall.. one hits the tilemap which adds a joint called "test"

  the other instance, when it is below y position of 300, will add a join to tilemap called "test2"

  I have a text object that counts how many joints with tag "test" .. it should be one, but it shows two.

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 27 Jan, 2015
  • Quote

  R0J0hound , hm okay.

  I'm having issues with the joints expressions.. not sure what is happening.. I add a tag to one object, and it is adding the same tag to another object, so if an object depends on whether a tag exists or not, it won't be accurate because it shouldn't have the tag.. maybe I can make a simple capx to show the issue...

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 27 Jan, 2015
  • Quote

  R0J0hound , thanks, yea I can probably just taper the sides of the player for simplicity sake for now..

  btw, I found an issue- some reason this capx isn't finding the collision point..

  Also, why can't we get new collision points after the first collision? if a line falls down, it only gets the first end that touches and never the last end..

  I need to figure out a way to find both collision points when a line has both ends colliding, or when the new end collides.. some reason it only registers the first collision.

  edit: I guess it doesn't register the second collision if it is already touching?.. hrmm..

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 26 Jan, 2015
  • Quote

  here's an animated gif of the issue.. maybe theres a way to fix it?

  [attachment=0:2itv4dpe][/attachment:2itv4dpe]

• • Prominent
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  • • Joined 28 Apr, 2012
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    • 137 topics • 1,246 posts
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  • 26 Jan, 2015
  • Quote

  I found a reason why it'd be better to use line segments for the tilemap instead of boxes..

  So that you don't get stuck on corners of the boxes when collideing with walls.. here's a screenshot showing th eplayer standing on a corner without falling.

  [attachment=0:16kt8117][/attachment:16kt8117]