Agent skill
ffi-reference
ZX fantasy console FFI bindings reference. Documents 250+ functions for rendering, input, audio, camera, transforms, textures, materials, and debug. Includes init-only vs render-only call rules and the coordinate system. Use when writing or debugging ZX FFI calls in game code.
Install this agent skill to your Project
npx add-skill https://github.com/nethercore-systems/nethercore-ai-plugins/tree/main/zx/skills/ffi-reference
Metadata
Additional technical details for this skill
- author
- nethercore-systems
- version
- 1.0.0
SKILL.md
ZX FFI Reference
The ZX console provides 250+ FFI functions. Always read nethercore/include/zx.rs for accurate signatures.
FFI Categories
| Category | Key Functions | Find In zx.rs |
|---|---|---|
| System | delta_time, tick_count, log |
Lines 1-100 |
| Random | random, random_range, random_f32 |
Search "random" |
| Input | button_held, button_pressed, left_stick_x |
Search "button" |
| Camera | camera_set, camera_fov |
Search "camera" |
| Transforms | push_translate, push_rotate_y, push_scale |
Search "push_" |
| Meshes | load_mesh, draw_mesh, cube, sphere |
Search "mesh" |
| Textures | load_texture, texture_bind |
Search "texture" |
| Materials | material_albedo, material_mre, material_normal |
Search "material" |
| Audio | load_sound, play_sound, music_play |
Search "sound" |
| 2D Drawing | draw_sprite, draw_text, draw_rect |
Search "draw_" |
| Environment | draw_env, env_gradient |
Search "env_" |
| Debug | debug_register_*, debug_watch_*, debug_group_* |
Search "debug_" |
Init-Only Functions
Must call only during init():
set_tick_rate(rate)- 0=24fps, 1=30fps, 2=60fps, 3=120fpsset_clear_color(color)- 0xRRGGBBAArender_mode(mode)- 0=Lambert, 1=Matcap, 2=PBR, 3=Hybrid- All
rom_*(),load_*(), procedural mesh functions
Render-Only Functions
Call only during render():
- All
draw_*functions camera_set(),camera_fov()push_translate(),push_rotate_y(),push_scale()texture_bind(),font_bind()begin_pass(),begin_pass_stencil_write()
Asset Loading
// In init()
let tex = rom_texture_str("player");
let mesh = rom_mesh_str("character");
let sfx = rom_sound_str("jump");
let music = rom_music_str("theme");
Transform Stack
// In render()
push_translate(x, y, z);
push_rotate_y(angle_degrees);
push_scale_uniform(scale);
draw_mesh(MESH);
push_identity(); // Reset
Coordinate System
- Y-up, right-handed, -Z forward
- When yaw=0, camera looks toward -Z
- Angles in degrees for FFI functions
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