WASM Imports#

Every function the SDK calls is a WASM import provided by the Xenon host at runtime. This is the complete list of imports a standard plugin can use.

All imports use the "core" import module unless otherwise noted.

Core Imports#

Import Name	SDK Wrapper	Signature
`log`	`Log(msg)`	`(i32) → void`
`get_time`	`GetTime()`	`() → f32`
`is_key_down`	`IsKeyDown(vk)`	`(i32) → i32`
`is_key_pressed`	`IsKeyPressed(vk)`	`(i32) → i32`
`is_key_released`	`IsKeyReleased(vk)`	`(i32) → i32`
`get_screen_width`	`ScreenSize().x`	`() → i32`
`get_screen_height`	`ScreenSize().y`	`() → i32`
`world_to_screen`	`WorldToScreen(...)`	`(f32, f32, f32, i32) → i32`
`world_to_screen_unclamped`	`WorldToScreenUnclamped(...)`	`(f32, f32, f32, i32) → i32`
`get_camera_position`	`GetCameraPosition()`	`(i32) → i32`
`get_camera_forward`	`GetCameraForward()` / `GetViewDirection()`	`(i32) → i32`
`get_view_matrix`	`GetViewMatrix(out16)`	`(i32) → i32`
`get_sensitivity`	`GetSensitivity()`	`() → f32`
`set_sensitivity`	`SetSensitivity(value)`	`(f32) → void`
`get_mouse_delta`	`GetMouseDelta(out)`	`(i32) → i32`

Tracked Input Imports#

Import Name	SDK Wrapper	Signature
`get_game_command_tick`	`GetGameCommandTick()`	`() -> i32`
`press_game_button_tracked_v1`	`PressGameButtonTracked(bit)`	`(i32) -> i64`
`pulse_game_button_tracked_v1`	`PulseGameButtonTracked(bit, holdMs)`	`(i32, i32) -> i64`
`get_input_receipt_v1`	`GetInputReceipt(requestId, out)`	`(i64, i32) -> i32`

Tracked button imports accept one action bit. GameMemory receipts can report InputConsumed; KernelDriver receipts cannot observe that milestone. Superseded is terminal and means the request was coalesced or replaced, but it may have emitted or still affect a live held/timed action, so it is not a safe retry signal. A zero milestone tick can also mean the event could not be bracketed inside one stable command tick. Input consumption and milestone ticks do not confirm a shot or projectile spawn.

Entity Imports#

Import Name	SDK Wrapper	Signature
`get_entity_count`	`GetPlayerCount()`	`() → i32`
`get_entity`	`Entity(index)`	`(i32, i32) → void`
`get_local_player`	`LocalPlayer()`	`(i32) → void`
`get_entity_ability_cooldown`	`Entity::GetAbilityCooldown(input)`	`(i32, i32, i32, i32) → i32`
`get_bone_pos`	`Entity::GetBonePos(id)`	`(i32, i32, i32) → i32`
`is_entity_visible`	`Entity::IsVisible()`	`(i32) → i32`
`get_distance_to_entity`	`Entity::GetDistance()`	`(i32) → f32`
`find_best_target`	`FindBestTarget(flags)`	`(i32) → i32`
`get_distance`	(internal)	`(f32, f32, f32, f32, f32, f32) → f32`
`get_skeleton_connections`	`GetSkeletonConnections(heroId, out)`	`(i64, i32) → i32`

Ability State Imports#

Import Name	SDK Wrapper	Signature
`get_ult_charge`	`GetUltCharge()`	`() → f32`
`get_ult_charge_status`	`HasUltCharge()`	`() → i32`
`get_local_ability_cooldown`	`GetAbilityCooldown(input)`	`(i32, i32) → i32`
`get_dva_self_destruct_state_v1`	`GetDvaSelfDestructState(out)`	`(i32) → i32`

Aim Imports#

Import Name	SDK Wrapper	Signature
`aim_set_direction`	`AimSetDirection(dir)`	`(f32, f32, f32) → void`
`aim_get_direction`	`AimGetDirection()`	`(i32) → i32`
`aim_set_angles`	`AimSetAngles(pitch, yaw)`	`(f32, f32) → void`
`aim_get_angles`	`AimGetAngles()`	`(i32) → i32`
`aim_to`	`AimAtPosition(target, stiffness)`	`(f32, f32, f32, f32, f32) → void`
`aim_to_bone`	`AimAtBone(idx, bone, stiffness)`	`(i32, i32, f32, f32) → void`
`aim_reset_smoothing`	`AimResetSmoothing()`	`() → void`
`aim_hits_hitbox`	`AimHitsHitbox(idx, scale)`	`(i32, f32) → i32`

Versioned Aim Imports#

Import Name	SDK Wrapper	Signature
`aim_to_v1`	`AimAtPositionEx(target, stiffness, tolerance, out)`	`(f32, f32, f32, f32, f32, i32) -> i32`
`aim_to_bone_v1`	`AimAtBoneEx(idx, bone, stiffness, tolerance, out)`	`(i32, i32, f32, f32, i32) -> i32`
`aim_hit_test_v1`	`AimHitTest(idx, scale, margin, bulletPadding, predictionOffset, bodySlot, out)`	`(i32, f32, f32, f32, f32, f32, f32, i32, i32) -> i32`

Draw Imports#

Import Name	SDK Wrapper	Signature
`draw_line`	`Draw::Line(...)`	`(f32, f32, f32, f32, f32, f32, f32, f32, f32) → void`
`draw_circle`	`Draw::Circle(...)` / `CircleFilled(...)`	`(f32, f32, f32, f32, f32, f32, f32, f32) → void`
`draw_rect`	`Draw::Rect(...)` / `RectFilled(...)`	`(f32, f32, f32, f32, f32, f32, f32, f32, f32) → void`
`draw_text`	`Draw::Text(...)`	`(f32, f32, i32, f32, f32, f32, f32, i32) → void`

Draw Parameter Conventions#

Colors are passed as normalized floats (0.0-1.0 for R, G, B, A)
thickness = 0 means "filled" for circle and rect
Rect coordinates are min/max corners, not position/size (the SDK converts)

Import Name	SDK Wrapper	Signature
`menu_checkbox`	`ImGui::Checkbox(...)`	`(i32, i32) → i32`
`menu_slider_int`	`ImGui::SliderInt(...)`	`(i32, i32, i32, i32) → i32`
`menu_slider_float`	`ImGui::SliderFloat(...)`	`(i32, i32, f32, f32) → i32`
`menu_combo`	`ImGui::Combo(...)`	`(i32, i32, i32) → i32`
`menu_text`	`ImGui::Text(...)`	`(i32) → void`
`menu_tooltip`	`ImGui::Tooltip(...)`	`(i32) → void`
`menu_separator`	`ImGui::Separator()`	`() → void`
`menu_collapsing_header`	`ImGui::CollapsingHeader(...)`	`(i32) → i32`
`menu_hotkey`	`ImGui::Hotkey(...)`	`(i32, i32) → i32`

Config Imports#

Import Name	SDK Wrapper	Signature
`config_set_int`	`Config::SetInt(...)`	`(i32, i32) → void`
`config_set_float`	`Config::SetFloat(...)`	`(i32, f32) → void`
`config_set_bool`	`Config::SetBool(...)`	`(i32, i32) → void`
`config_get_int`	`Config::GetInt(...)`	`(i32, i32) → i32`
`config_get_float`	`Config::GetFloat(...)`	`(i32, f32) → f32`
`config_get_bool`	`Config::GetBool(...)`	`(i32, i32) → i32`
`config_save`	`Config::Save()`	`() → void`

Plugin Exports#

These are the functions your plugin exports to the host:

Export Name	Entry Point	Signature
`on_get_info`	Plugin metadata	`(i32) → void`
`on_load`	Initialization	`() → void`
`on_unload`	Cleanup	`() → void`
`on_frame`	Game logic	`(f32) → void`
`on_render`	Drawing	`() → void`
`on_menu`	UI	`() → void`
`on_hero_changed`	Hero switch	`(i64) → void`
`on_perform_action`	Action callback	(varies)

Library Imports#

Library dependencies use a dynamic import module: lib_<service_name>.

For example, a dependency on "math_helpers" generates imports like:

Module	Import Name	Signature
`lib_math_helpers`	`lerp`	`(f32, f32, f32) → f32`
`lib_math_helpers`	`clamp_f`	`(f32, f32, f32) → f32`
`lib_math_helpers`	`remap`	`(f32, f32, f32, f32, f32) → f32`

These are defined in the import header (include/xenon/libs/math_helpers.hpp).

WASM Types Reference#

Notation	WASM Type	C++ Type
`i32`	32-bit integer	`int32_t`, `uint32_t`, pointers
`i64`	64-bit integer	`int64_t`, `uint64_t`
`f32`	32-bit float	`float`
`f64`	64-bit float	`double`

In WASM, all pointers are i32 (32-bit address space).