Emil_Shanaty/Verbatim
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gameplay-phase1
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7 Commits
Author SHA1 Message Date
Emil 357db17c2f feat: GPU optimization — lighting, viewport CA, benchmark mode, 531 FPS 
- Resolution: 8x8 world cells, 2x2 UI cells (UI_SCALE=4)
- GPU lighting: vertex-shader computed, light source list buffer (max 64)
  instead of O(N×R²) grid scan, O(N×S) per cell
- Viewport-aware CA: iterate only active chunks, not all 250×250
- Flat array entity/item/shadow maps instead of HashMaps
- Flat 128-entry ASCII atlas array instead of HashMap lookup
- Partial grid upload: viewport + 30-cell margin only
- Pre-allocated viewport arrays in renderer structs (zero alloc/frame)
- Skip CPU lighting for GPU modes (pass None)
- Benchmark mode: --mode benchmark with per-subsystem timing
- GpuLightSource struct, light_count in push constants
- gather_sources_in_range() for viewport-scoped source gathering

Benchmark (600 ticks, release):
  Graphics: 531 FPS (was 386, +38%), render 1013us (was 1699us, -40%)
  ASCII:    402 FPS (was 313, +28%), render 1502us (was 2346us, -36%)

All 171 tests + 14 scenarios pass.
 2026-06-21 16:09:45 +03:00
Emil 6e9e90fb34 feat: Vulkan renderer with instanced rendering (Phase 4) 
VulkanRenderer using ash 0.38 + winit:
- Instance with KHR_surface + xlib + wayland extensions
- Physical device selection (first GPU with graphics+present)
- Swapchain (FIFO present mode, B8G8R8A8_UNORM)
- Render pass with color attachment
- Graphics pipeline with instanced rendering:
  - Vertex buffer: unit quad (4 verts, 6 indices)
  - Instance buffer: 8000 CellInstance structs (32 bytes each)
  - 2 vertex bindings: per-vertex (quad pos) + per-instance (grid pos,
    atlas UV, fg/bg colors)
  - Push constants: screen size + cell size
- Glyph atlas: R8_UNORM texture, uploaded via staging buffer
  - fontdue rasterizes DejaVu Sans Mono at startup
  - Linear filtering sampler
- Descriptor set: combined image sampler for atlas
- 2 frames in flight with semaphores + fences
- Persistent mapped instance buffer (zero-copy per frame)

Shaders (pre-compiled SPIR-V):
- cell.vert: positions quad from instance data, maps to clip space
- cell.frag: samples atlas alpha, blends fg/bg

--mode vulkan: tries Vulkan, falls back to softbuffer window mode
109 tests, 0 failures
 2026-06-21 00:34:01 +03:00
Emil a66b4ac0cb fix: AABB capsule collider for rigid entities, sliding on surfaces 
- Replace per-body collision with single AABB collider for rigid entities
- Entity has half_w/half_h defining the collider box
- Separate axis resolution: X first (min-penetration push), then Y
  (velocity-direction push to handle floor/ceiling correctly)
- Sliding: when hitting a wall, only X velocity is zeroed, Y continues
- check_on_ground uses AABB bottom edge, not individual bodies
- Fix: X resolution uses minimum penetration (was velocity-based,
  which pushed player through walls when velocity was zero)
- Default scene: added water pool, lava pool, wood structure, sand dune,
  acid pool, stone wall obstacle
- 28/28 tests passing
 2026-06-20 21:56:13 +03:00
Emil a731d5cbb7 feat: 5x5 entity (27 bodies), terminal viewport up to 250x120 
- Entity: 5x5 grid body + 2-cell arm = 27 sub-bodies, radius 0.5
- Terminal: default 200x60, max 250x120 (was 250x80)
- 31 constraints (full grid + arm)
- Spawn height adjusted for 5-tall body
 2026-06-20 21:43:50 +03:00
Emil 595edc3006 feat: simpler entities - 3x3 rectangle with hand (10 sub-bodies) 
- Entity: 10 sub-bodies (was 16), radius 0.45 (was 0.7)
- Shape: 3x3 body rectangle + 1 hand cell on right side
- Much more compact, world appears larger relative to character
- 13 constraints (grid pattern + hand attachment)
- Spawn height adjusted for smaller body
 2026-06-20 21:42:16 +03:00
Emil 9fe7137e45 feat: bigger characters (16 sub-bodies), wider terminal viewport 
- Entity: 16 sub-bodies (was 7), radius 0.7 (was 0.4), full humanoid
  shape: head, shoulders, torso, arms, hips, legs, feet
- Terminal: viewport up to 250x80 (was 120x50), uses full terminal size
- Camera: uses renderer viewport dimensions instead of hardcoded values
- Physics: constraint correction clamped to 0.5 cells max, 8 substeps
  (was 4), gravity 0.04 (was 0.08), collision pass after each constraint
  iteration to prevent tunneling with larger bodies
- Player: move_speed 0.3, jump_force 1.2 for bigger body
- Spawn: 6 cells above surface (was 4) for taller body
 2026-06-20 21:27:11 +03:00
Emil 3cd94a386a fix: collision tunneling, spawn at surface, physics substepping 
- Fix: rewrite resolve_grid_collision to push body out of solid cells
  when center is inside (was only pushing to small radius from center)
- Fix: max velocity clamp (0.8) + 4x substepping prevents tunneling
- Fix: player/goblin spawn at terrain surface instead of mid-air
- Fix: gravity reduced from 0.3 to 0.08 for substepping
- Add: headless mode (--headless-ticks N) dumps grid state to file
- Add: velocity zeroing on collision for stable resting
 2026-06-20 18:26:33 +03:00