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IDProjectCategoryView StatusLast Update
0025418RunnerFunctionsPublic2018-06-19 14:47
ReporterzenAssigned ToRussell Kay 
PriorityMediumSeverityC - GeneralReproducibility<25%
Status ResolvedResolutionFixed 
PlatformWindowsOS OS Version
Product Version1.4.1804 
Target Version1.4 FinalFixed in Version1.4 Final 
Summary0025418: Functions: Using Fast Collision system will cause incorrect results when using collision_line()
DescriptionEnabling fast collisions will cause the single pixel where two collision boxes meet to incorrectly report that there is no collision_line between points on either side of the collision boxes
Steps To ReproduceRun the attached .gmz
Run with target Windows
Notice that the bottom circle is green (indicates no collision along the line shown)
Press left or right to move by a single pixel and notice that there is not a collision
Close the window and open GGS -> General
Untick "User fast collision system"
Run with target Windows
Notice that the bottom circle is red (indicates there is a collision along the line shown)
Additional InformationOriginal helpdesk ticket:
1.4 Found In1.4.1763
2.x Runtime Found In
2.x Runtime Verified In


Kevin Brown

2017-01-24 17:12


fast_collision_line_bug.gmz (9,725 bytes)

Russell Kay

2018-06-14 12:20

Manager   ~0060257

I believe Peter has fixed this