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Signed-off-by: Armin Schlegel <armin.schlegel@gmx.de>
Signed-off-by: Armin Schlegel <armin.schlegel@gmx.de>
- Arr: x, y+56 - @foo = +112
Signed-off-by: Armin Schlegel <armin.schlegel@gmx.de>
Signed-off-by: Armin Schlegel <armin.schlegel@gmx.de>
Signed-off-by: Armin Schlegel <armin.schlegel@gmx.de>
Signed-off-by: Armin Schlegel <armin.schlegel@gmx.de>
Signed-off-by: Armin Schlegel <armin.schlegel@gmx.de>
Signed-off-by: Armin Schlegel <armin.schlegel@gmx.de>
Signed-off-by: Armin Schlegel <armin.schlegel@gmx.de>
Add detailed documentation for AI agents to understand the mdcii-engine: Main files: - .github/copilot-instructions.md: Primary reference with TL;DR, quick reference tables - .github/agents.md: Lean quick-reference card (95 lines) Detailed topic docs in .github/docs/ (~3000 lines total): - bsh-format.md: BSH sprite archives, RLE decoding algorithm - cod-format.md: COD file parsing, building definitions, Kind types - chunk-format.md: GAM/SCP chunk format, INSEL5/INSELHAUS structures - islands.md: Island layers, two-layer system, Finalize() merging - rendering.md: Isometric projection, depth sorting, layer ordering - texture-atlas.md: Atlas generation, pivot calculation, caching - ecs-architecture.md: ECS components, systems, queries - rotation.md: World/building rotation, coordinate transforms Covers: file formats, ECS architecture, isometric math, rendering pipeline, atlas system, rotation system, and common development tasks.
- Add SavegameMeta with camera position, zoom, rotation - Auto-center camera on first island when uninitialized - Add World ECS component to track all island entities - Add --savegame/-s flag to specify savegame file - Skip unknown building IDs with log message instead of error - Print camera position when panning (debug)
- Fix deep sea tile gaps by properly tiling isometric diamonds - Skip deep sea tiles (1201) from sorting - drawn as cached background - Fix frustum culling to account for zoom centered on screen center - Add zoom-aware margin to prevent pop-in when panning - Use pre-computed sort key with slices.SortFunc for faster sorting - Restore Surf/Estuary coast transitions in Sea layer
- Replace camera wrapping with clamping at world bounds - Scale pan speed linearly with zoom (1x at 100%, 10x at 10%) - Mark camera as initialized when user moves or zooms
- Start at zoom 1.0 instead of 0.1 - Center on world center on first load - Add Initialized flag to track if user moved camera - Store initialized state in savegame for camera restoration
Extend the ID remapping to handle terrain tile IDs 102-110: - IDs 102-103 map with +67 offset (to 169-170) - IDs 104-110 map with +60 offset (to 164-170) This fixes missing buildings/terrain when loading savegames that use these legacy terrain IDs not present in haeuser.cod.
Add YAML config file support at ~/.mdcii/config.yaml: - Configurable via -c/--config command line argument - Fallback chain: specified path → ~/.mdcii/config.yaml → ./config.yaml - Creates default config if none exists - Exits with error on parse failure Currently supports mouse_pan_factor setting (default: 0.67).
- Implement zoom-to-cursor: zoom centers on mouse position - Scale mouse pan speed linearly with zoom level (faster when zoomed out) - Reduce WASD pan speed by half (0.5 → 0.25) - Use configurable mouse_pan_factor from config file - Add --config/-c flag for custom config file path
Implement offscreen selection buffer for accurate building detection: - Add HoveredBuildingID field to Control component - Create ID↔Color encoding (24-bit, supports 16M+ IDs) - Render buildings to offscreen buffer with ID-encoded colors - Sample buffer at mouse position to get hovered building ID - Display building ID in HUD overlay The selection buffer uses the same transforms and depth sorting as the main render, ensuring accurate detection even with overlapping buildings and complex sprite shapes.
Press 'B' to toggle between normal rendering and the selection buffer view, which shows buildings colored by their encoded IDs. Useful for debugging pixel-perfect hover detection.
- Use rainbow colors (HSV-based) instead of dark blue ID encoding for debug view - Create solid silhouette images (no sprite details) for cleaner display - Separate ID-encoded buffer (for sampling) from rainbow display buffer - Golden ratio distribution ensures adjacent buildings have distinct colors
Read pixels from source image and create solid white version by replacing all non-transparent pixels with white while preserving alpha channel. This removes all sprite details.
Roads (KindRoadsID) are now selectable in addition to buildings. Renamed IsBuilding to IsSelectable to reflect the broader scope.
Amp-Thread-ID: https://ampcode.com/threads/T-019c286b-ab60-71ac-9f59-8f094aa610ec Co-authored-by: Amp <amp@ampcode.com>
Signed-off-by: Armin Schlegel <armin.schlegel@gmx.de>
Add pixel-perfect building selection buffer to the raylib renderer, matching the existing ebiten implementation. Toggle debug rainbow overlay with B key; building ID under the mouse cursor is shown in the HUD overlay. - Render selectable tiles (buildings, roads) to an offscreen RenderTexture2D using ID-encoded solid-color silhouettes - Sample the pixel at mouse position to decode the hovered building ID - Rainbow-colored display buffer drawn on screen when toggled - Silhouette textures cached per atlas page for performance - Cleanup of render textures and silhouette cache on Close() Amp-Thread-ID: https://ampcode.com/threads/T-019c31ba-7afb-73ad-8350-572738706305 Co-authored-by: Amp <amp@ampcode.com>
Compute tile range from actual screen corner coordinates instead of using a fixed offset. The isometric projection maps screen corners to tiles much further than a simple width/height estimate, causing black gaps at the edges. Amp-Thread-ID: https://ampcode.com/threads/T-019c31ba-7afb-73ad-8350-572738706305 Co-authored-by: Amp <amp@ampcode.com>
…aw sprite directly RenderSystem only iterates IslandType entities, so the standalone animation viewer got nothing rendered. Replace RenderSystem call with direct sprite drawing centered on screen, plus a HUD showing building info. Also add atlas caching and required Camera/Control ECS entities. Amp-Thread-ID: https://ampcode.com/threads/T-019c778b-e470-70fe-9b5e-ca34f852e04d Co-authored-by: Amp <amp@ampcode.com>
- AnimationSystem now syncs Count/Duration from animation definition each frame, so building ID or rotation changes are picked up - Add Up/Down keys to step frames manually (pauses auto-play) - Add Space to toggle play/pause - Show frame counter and play state in HUD - Update usage text with all controls Amp-Thread-ID: https://ampcode.com/threads/T-019c778b-e470-70fe-9b5e-ca34f852e04d Co-authored-by: Amp <amp@ampcode.com>
- Fix grid-to-sprite alignment by offsetting grid origin by tileW/2 (BSH draw position is bounding box corner, diamond top vertex is at +tileW/2 from that) - animations_ecs: add G key toggle, grid extends 2 tiles beyond building footprint in each direction - Apply same tileW/2 fix to island_ecs Ebiten and Raylib grid overlays Amp-Thread-ID: https://ampcode.com/threads/T-019c778b-e470-70fe-9b5e-ca34f852e04d Co-authored-by: Amp <amp@ampcode.com>
- Sort tiles by isometric depth (x+y) instead of y-only for correct back-to-front rendering across all camera rotations - Add depth-sorted rendering to Raylib renderer (was unsorted) - Align debug grid to island ground level using PositionOffset - Fix atlas rotation anchor using RotationOffsets origin tile - Bump atlas version to 4 and add atlas caching to animations cmd Amp-Thread-ID: https://ampcode.com/threads/T-019c7ae2-a69c-7741-b62c-0e47f7cadb43 Co-authored-by: Amp <amp@ampcode.com>
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This project won't be maintained using C++ anymore. Instead the project will be continued using golang.