claude
d9a59fff03
The lobby connect menu and three pieces of the HUD (hit-flash overlay, boss bar centering, death-message centering, hint label) were all silently broken by the same Godot gotcha: set_anchors_preset(preset) with the default keep_offsets=false does NOT zero the offsets to the preset's margins -- it recomputes them to preserve the control's *current* rect, which for a freshly constructed Control is (0,0). Anchors end up correct; the actual rect stays pinned to the top-left corner regardless. Fixed by switching to set_anchors_and_offsets_preset() everywhere a Control is built in code, and by using offset_left/offset_top (anchor-relative) instead of .position (absolute) for the HUD hint label. Documented as gotcha #5 in CLAUDE.md. Also split PLAYER_RADIUS into two constants: PLAYER_RADIUS (6.0, the authoritative hitbox used by SimWorld) and PLAYER_VISUAL_RADIUS (13.0, view-only, used by world_view.gd). The client renders every ship a little late relative to the server -- interpolation delay, reconciliation smoothing -- so a hitbox that matched the sprite would let bullets connect against a ship the player watched dodge clear of them. A smaller hitbox means the occasional bullet visibly clips the sprite without a hit, which reads as more forgiving of latency than the reverse. Verified headlessly: a throwaway scene instantiating MainMenu/HUD under a real 1280x720 viewport, asserting the panel is centered and _canvas.size / hint position resolve correctly, before and after each fix. check.sh, test.sh (78/78) and smoke.sh all pass.
74 lines
3.2 KiB
GDScript
74 lines
3.2 KiB
GDScript
class_name SimConfig
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extends RefCounted
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## Tuning constants shared verbatim by the server simulation and the client
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## replica. Nothing here may differ between the two builds -- if a value needs
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## to differ, it belongs in [GameConfig], not here.
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# --- Time -------------------------------------------------------------------
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const TICK_RATE := 60
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const TICK_DELTA := 1.0 / 60.0
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## Server sends a snapshot every N ticks (60 / 3 = 20 Hz).
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const SNAPSHOT_INTERVAL := 3
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## How far behind the newest snapshot the client renders remote actors.
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const INTERPOLATION_DELAY_TICKS := 6
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# --- Arena ------------------------------------------------------------------
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const ARENA_HALF := Vector2(620.0, 340.0)
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## Bullets are culled once they leave the arena by this margin.
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const BULLET_CULL_MARGIN := 64.0
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# --- Player -----------------------------------------------------------------
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const PLAYER_SPEED := 240.0
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## Authoritative hitbox. Smaller than PLAYER_VISUAL_RADIUS on purpose: a client
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## renders its own and everyone else's ship a little late (interpolation delay,
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## reconciliation smoothing), so a hitbox that matched the sprite exactly would
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## let bullets connect against a ship the player watched dodge clear of them.
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## Erring small means the occasional bullet visibly clips the ship without a
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## hit -- a client-side illusion, but the one that reads as fair, versus a
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## bullet that visibly missed still registering as a hit.
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const PLAYER_RADIUS := 6.0
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## Render-only. Used by src/view/, never by anything under src/sim/.
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const PLAYER_VISUAL_RADIUS := 13.0
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const PLAYER_MAX_HP := 100
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const PLAYER_FIRE_COOLDOWN := 7 # ticks
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const PLAYER_BULLET_SPEED := 620.0
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const PLAYER_BULLET_RADIUS := 4.0
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const PLAYER_BULLET_LIFETIME := 90 # ticks
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const PLAYER_BULLET_DAMAGE := 6
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const PLAYER_IFRAMES := 36 # ticks of invulnerability after a hit
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const PLAYER_RESPAWN_DELAY := 180 # ticks
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# --- Anti-cheat guards ------------------------------------------------------
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## Inputs older than this (relative to the newest accepted) are discarded.
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const INPUT_MAX_AGE := 30
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## Inputs claiming to be further ahead than this of the server tick are clamped.
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const INPUT_MAX_LEAD := 12
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## Hard ceiling on inputs consumed from one peer in a single tick.
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const INPUT_MAX_PER_TICK := 4
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# --- Emergency escape -------------------------------------------------------
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const ESCAPE_CHANNEL_TICKS := 180 # 3 seconds
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## Taking damage while channelling cancels the escape.
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const ESCAPE_BREAK_ON_DAMAGE := true
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# --- Bullets ----------------------------------------------------------------
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const MAX_BULLETS := 4096
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const TEAM_PLAYER := 0
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const TEAM_ENEMY := 1
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# --- Bullet visual kinds (index into the renderer's atlas) ------------------
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const KIND_PLAYER_SHOT := 0
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const KIND_ORB := 1
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const KIND_NEEDLE := 2
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const KIND_HEAVY := 3
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# --- Instances --------------------------------------------------------------
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const LOBBY_INSTANCE_ID := 1
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const DUNGEON_PARTY_MAX := 4
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## How long a forming dungeon waits for more players before it locks.
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const DUNGEON_FORMING_TICKS := 300
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# --- Portal -----------------------------------------------------------------
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const PORTAL_POS := Vector2(0.0, -220.0)
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const PORTAL_RADIUS := 60.0
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