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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||
|---|---|---|---|---|---|---|---|---|---|
| 0003545 | Spring engine | Lua | public | 2013-03-10 21:19 | 2013-03-11 00:37 | ||||
| Reporter | msafwan | ||||||||
| Assigned To | Kloot | ||||||||
| Priority | normal | Severity | minor | Reproducibility | always | ||||
| Status | resolved | Resolution | fixed | ||||||
| Product Version | 93.0 | ||||||||
| Target Version | Fixed in Version | ||||||||
| Summary | 0003545: AddUnitImpulse() cause unit to move in random direction. | ||||||||
| Description | Basically, if you do this every frame: (to floating ground unit) Spring.AddUnitImpulse(unitid, 0,-anyImpulseValue,0) the unit will move sideway randomly. this is really sad thing for me, because I could no longer implement feature that require accurate impulse anymore :*( | ||||||||
| Additional Information | Note: this also happen in Spring 92++, this did not happen in Spring 91.0 and Spring 91++ could not test in Spring 92.0 because GUI didn't appear. | ||||||||
| Tags | No tags attached. | ||||||||
| Checked infolog.txt for Errors | |||||||||
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msafwan (reporter) 2013-03-10 21:33 |
IMO it behave similar to a glitch that happen when unit spawn inside another unit, but I didn't see anything in debug view tho... I hope this help |
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Kloot (developer) 2013-03-10 22:11 |
1) _why_ are you applying impulse into the ground? 2) wtf is a "floating" ground unit? 3) does not reproduce on flat terrain, units on slopes will move sideways which is expected |
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msafwan (reporter) 2013-03-11 00:12 Last edited: 2013-03-11 00:31 |
hi Kloot. I launch (ground) unit into sky with an impulse (like a cannon), then I constantly push it downward with a constant amount of impulse every frame, so it curve downward. This work alright on Spring 91 and 91++, But in Spring 92 and 93 it goes sideway randomly rather than curve smooothly downward. So this kind of bug make everything I did for the curved motion failed because I don't know why it go sideway since didn't even give impulse in x or z direction! unit is flying, so no terrain is touching it... ============ UPDATE: here's how the impulse value would look like. http://pastebin.com/aCqqUCFA (it show a real case that I apply to a unit which cause this jerky random motion sideway, tested at SmallDivide map) every frame I do this: Spring.AddUnitImpulse(id,0,1,0) Spring.AddUnitImpulse(id,xImp,neededImpulse-1,zImp) The downward push is not constant because something is messing with the unit speed. I hope this help :) |
| Notes |
| Issue History |
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| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2013-03-10 21:19 | msafwan | New Issue | |
| 2013-03-10 21:33 | msafwan | Note Added: 0010029 | |
| 2013-03-10 22:11 | Kloot | Note Added: 0010030 | |
| 2013-03-11 00:12 | msafwan | Note Added: 0010031 | |
| 2013-03-11 00:27 | msafwan | Note Edited: 0010031 | View Revisions |
| 2013-03-11 00:28 | msafwan | Note Edited: 0010031 | View Revisions |
| 2013-03-11 00:29 | msafwan | Note Edited: 0010031 | View Revisions |
| 2013-03-11 00:31 | msafwan | Note Edited: 0010031 | View Revisions |
| 2013-03-11 00:37 | Kloot | Changeset attached | => spring develop 8c355964 |
| 2013-03-11 00:37 | Kloot | Assigned To | => Kloot |
| 2013-03-11 00:37 | Kloot | Status | new => resolved |
| 2013-03-11 00:37 | Kloot | Resolution | open => fixed |
| Issue History |