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https://github.com/jcreek/CosmicClash.git
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Josh Creek
3d3024ae8a
Adds LocalPredictionHistory, a client-owned seq-tagged ring recording predicted ship state per input sequence, plus wiring in NetworkedMatch to record predictions on send and compare them against authoritative snapshots on arrival. Ships stay frozen/interpolated until 4.3 lands actual correction logic; this round only builds the comparison machinery and its data. Includes fixes from two review rounds: resync_required now self-clears once acknowledgements catch back up (mirrors InputJitterBuffer's stalled flag), NetBodyState gained a copy() method to stop diagnostic accessors aliasing ring-owned state, and corrected comments that had described the local ship as being force-simulated pre-4.3 when it is still driven by interpolated transform writes.
48 lines
1.9 KiB
GDScript
48 lines
1.9 KiB
GDScript
extends RefCounted
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# Plain data holder for one body's snapshot state (§2.4 of multiplayer-todo.md).
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# Deliberately not Ship/Ball themselves, and deliberately not a scene-tree
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# node — NetCodec's pack/unpack must stay callable from pure-function tests
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# with no live scene. Phase 2's snapshot writer fills one of these per body
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# per tick from the real RigidBody3D state; Phase 2's interpolator does the
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# reverse.
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#
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# avel_range must match what the sender quantised with (SHIP_AVEL_RANGE vs
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# BALL_AVEL_RANGE in net_codec.gd) — it is not carried on the wire, because
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# slot order already tells both peers which body is which (§1.3: "entities
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# are addressed by integer slot, never by path").
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var position := Vector3.ZERO
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var rotation := Quaternion.IDENTITY
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var linear_velocity := Vector3.ZERO
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var angular_velocity := Vector3.ZERO
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var frozen := false
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var turbo := false
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var thrust_z := 0.0 # -1..1; re-quantised to a 3-bit bin on the wire
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var stalled := false
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var avel_range := 4.0 # NetCodec.SHIP_AVEL_RANGE; set to BALL_AVEL_RANGE for the ball
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# Self-referential preload, not get_script().new() — this file deliberately
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# has no class_name (same cache-timing reason as test_case.gd and other
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# path-`extends`d files in this project), and get_script().new() throws
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# "Nonexistent function 'new' in base 'GDScript'" from within the script's
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# own body in this Godot version.
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const _NetBodyState = preload("res://scripts/net_body_state.gd")
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# Same contract as ShipAction.copy() (see its own comment): a distinct
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# instance with equal fields, for callers that hold onto a state past the
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# tick/comparison it was returned in.
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func copy() -> RefCounted:
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var c := _NetBodyState.new()
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c.position = position
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c.rotation = rotation
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c.linear_velocity = linear_velocity
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c.angular_velocity = angular_velocity
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c.frozen = frozen
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c.turbo = turbo
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c.thrust_z = thrust_z
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c.stalled = stalled
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c.avel_range = avel_range
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return c
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