This implements a form of crowd movement that I've generally called
'unit pushing' in the last few years.
Essentially, any two units will push each other away when they're too
close. This makes it possible to ignore unit-unit obstructions, and thus
makes movement much smoother in crowds.
This first iteration of this system only allows pushing between idle
units and between moving units (i.e. a moving unit does not affect an
idle one).
This is because the unitMotion logic to detect it is stuck & needs to
use the pathfinders starts breaking: units can fail to move because they
are pushed away from their intended movement, and the current logic
fails to handle this gracefully.
Thankfully, the most value of this patch in terms of player experience
is found in the improvements to group movements and shuttling.
Other impacts:
- As the short pathfinder is called less often, we can increase the
starting search range & reduce the # of max turns, both improving
collision recovery.
- The performance of idle units is slightly worsened, as they must be
checked for idle-idle collisions. If needed a 'sleeping' system, as used
in physics engine, could be implemented.
- In general, however, expect slight performance improvements, as fewer
short paths are computed.
- Gathering efficiency should increase slightly, since shuttling times
are likely reduced slightly.
- As a sanity change to improve some edge cases (units that say they're
moving, i.e. pushable, but don't actually move), the 'going straight'
logic is turned off if a short path has been computed. This requires a
few cascading changes to work correctly.
Technical notes:
- To reduce the cost of the n^2 comparisons that pushing requires, units
are only compared within a small square on a grid which is lazily
reconstructed each turn. The overhead seems rather small, and this is
much simpler than keeping an up-to-date grid.
- The design is intended to be parallelisable if needed someday.
- The pathfinder's CheckMovement ignores moving units in UnitMotion, as
that is now the spec. Idle units are not ignored, which is required for
the 'collision' detection to work correctly (see above).
Refs #3442 (not fixed - idle units are not pushed by moving units).
Fixes#5084 (the overlap can still happen, but units will push each
other away).
Differential Revision: https://code.wildfiregames.com/D1490
This was SVN commit r25182.
Obstructions can reactivate after being destroyed, which leaves them
dangling forever. This is similar to 54f7a09a54.
This fixes this issue by setting a temporary "is destroyed" variable to
true.@
Reported by: seeh
Tested by: langbart
Reviewed By: Freagarach
Fixes#6016
Differential Revision: https://code.wildfiregames.com/D3558
This was SVN commit r24894.
Component.h is loaded by convention in all CmpComponents and is
requireed to use CmpPtr.
Fixes#5898
Differential Revision: https://code.wildfiregames.com/D3259
This was SVN commit r24454.
By using templates appripriately we can remove the need for explicit
specification of serializers, making it easier to serialize container
types and to write new serialization helpers.
Direct serialization calls haven't been replaced in this diff.
Comments by: vladislavbelov
Differential Revision: https://code.wildfiregames.com/D3207
This was SVN commit r24427.
Splash falloff was calculated using centre-to-point distance, where
nearest-edge to nearest-edge ought to have been used.
Use DistanceToPoint to correct for that.
Make sure the damage multiplier cannot go negative.
Remove GetUnitSize in favour of GetSize.
Reviewed By: bb
Differential Revision: https://code.wildfiregames.com/D2963
This was SVN commit r24010.
This is the same commit as 2abd9cead2 / D1418, fixing noted issues.
This addresses two related issues:
- Units visibly garrisoned on gates keep the gate open.
- Units visibly garrisoned on entities keep their pathfinding blocker
flags.
De-activate the obstruction of visibly-garrisoned entities, fixing the
2nd issue.
Keep a list of entities that cannot move and thus should not count
towards gate-opening logic.
Packing logic is kept separate: it is more related to entities having
'alternate forms' with different capabilities than being currently
incapable of moving.
Based on work by temple
Fixes#2679.
Fixes#5151.
Differential Revision: https://code.wildfiregames.com/D2775
This was SVN commit r23731.
Player-testing has revealed QA issues, so reverting these for now.
Differential Revision: https://code.wildfiregames.com/D2773
This was SVN commit r23714.
This addresses two related issues:
- Units visibly garrisoned on gates keep the gate open.
- Units visibly garrisoned on entities keep their pathfinding blocker
flags.
Remove the block-movement flag from visibly garrisoned entities.
Keep a list of entities that cannot move and thus should not count
towards gate-opening logic.
Packing logic is kept separate: it is more related to entities having
'alternate forms' with different capabilities than being currently
incapable of moving.
Based on work by temple
Comments by: Freagarach
Tested by: Nescio
Fixes#2679Fixes#5151
Differential Revision: https://code.wildfiregames.com/D1418
This was SVN commit r23710.
Allows to place buildings a bit faster and more perfectly aligned. Also
it helps to find a nearest placeable position in some cases.
Reviewed By: elexis
Comments By: Stan, wraitii
Differential Revision: https://code.wildfiregames.com/D2079
This was SVN commit r23330.
Introduced by 70e22e2923. PositionChanged messages sent between
MT_Destroy handling in CmpObstruction and the actual destruction of the
component could re-recreate an obstruction, which would then live
forever in the obstruction manager.
This prevents that by de-activating the obstruction when it is
destroyed, so that further PositionChanged messages do nothing.
Differential Revision: https://code.wildfiregames.com/D2060
This was SVN commit r22451.
Clean the code by removing the animal hardcoding in the Foundation
component and adding a flag DeleteUponConstruction to the Obstruction
component.
Have locked gates and upgraded entities equally delete entities when
transforming.
Add a workaround for trees inside walls on random maps.
Reviewed by: temple
Differential Revision: https://code.wildfiregames.com/D1415
Refs #4268
This was SVN commit r21624.
so that units don't try to gather forever while not being able to reach
it and
so that the sheep corpse can't be selected and seen anymore.
Differential Revision: https://code.wildfiregames.com/D21Fixes#4268
Based On Patch By: wraitii
Reviewed By: temple
Previously Reviewed By: Itms
This was SVN commit r21597.
However, using the terrain-only grid reveals one discrepancy between the
short pathfinder (which uses unit radii) and the long one (which uses
unit clearances). So I implemented the change proposed by sanderd17 in
#3294, which is removing unit radius and using only the pathfinder
clearance. Refs #3294
Now some tweaking has to be done in the templates, so that units get a
passability class suited to their apparent size. In the meantime the
unit motion is quite bugged.
This was SVN commit r16867.
This subdivision is faster but less precise, so range queries get more
entities and are a bit slower (up to 1ms approx.), but the overall gain
on a simulation update is always positive and can reach 10ms per frame.
For now, this new subdivision is only used by the range manager,
integrating it in the obstruction manager might be sensible.
Refs #2430
This was SVN commit r16540.
Done with:
ag -ls 'LOG(MESSAGE|MESSAGERENDER|WARNING|ERROR)' source | xargs sed
-i 's/LOG\(MESSAGE\|MESSAGERENDER\|WARNING\|ERROR\)(L/LOG\1(/g'
This was SVN commit r16183.
Add CEntityHandle which wraps an entity_id_t and also has a pointer to a
per-entity array of IComponents. QueryInterface/CmpPtr on a handle just
involve a couple of pointer dereferences instead of a map lookup.
This requires sizeof(void*) per registered interface type per entity,
which is currently ~0.5KB per entity, which shouldn't be a problem.
This was SVN commit r13825.
Cast to smaller integer types explicitly.
Generally avoid platform-dependent types (size_t) in simulation code.
Use float versions of math.h functions, not double.
This was SVN commit r10017.
Implements build limits. See #687.
Implements autorotation for dock placement.
Fixes unit spawning to consider terrain passability. See #893.
Adds new passability criteria based on distance from shore.
Updates build restrictions on some templates.
Changes unit spawning search to 4 tiles away from foundation.
Changes garrison/training spawn failure to nicer UI notification.
This was SVN commit r9970.
Pass terrain passability data to AI scripts.
Expand pathfinder passability data to 16 bits per tile, to allow more
classes.
Support 16-bit ints in serializer.
Partially support JS typed arrays.
Allow foundations to be placed on top of units (fixes#499).
Stop farms and fishes blocking movement (fixes#534).
Add obstruction flags to allow finer control over what they block.
Associate entity IDs with obstruction shapes, to allow finding colliding
entities.
Support moving to the edge of a target entity with inactive obstruction.
Support foundation entities in AI.
Support playing as non-hele civs.
This was SVN commit r8899.
Support asynchronous path queries.
Allow escaping when stuck in impassable terrain tiles.
Split Update message in multiple phases, to cope with ordering
requirements.
Support automatic walk/run animation switching.
This was SVN commit r8058.
Add short-range vertex-based pathfinder.
Integrate new pathfinder into unit motion code.
Change obstruction system to get rid of circles, and differentiate
structures from units.
Make PositionChanged messages synchronous.
Try to prevent some accidental float->int conversions.
This was SVN commit r7484.
