kagura_engine

pub(open) trait EngineGame {
  fn update_game(Self, 
@mizchi/kagura_core.InputSnapshot
InputSnapshot) -> Unit
  fn draw_game(Self, EngineContext) -> Array[
@mizchi/gfx.DrawTrianglesCommand
DrawTrianglesCommand]
}

pub(all) struct EngineContext {
  dst : 
@mizchi/gfx.ImageHandle
ImageHandle
  shader : 
@mizchi/gfx.ShaderHandle
ShaderHandle
  screen_w : Int
  screen_h : Int
}

pub(all) struct FrameProfile {
  fps : Double
  frame_time_ms : Double
  update_ms : Double
  draw_ms : Double
  gpu_frame_ms : Double
  draw_calls : Int
  vertex_count : Int
  asset_inflight : Int
} derive(
@moonbitlang/core/debug.Debug
Debug)

pub(all) struct LifecycleHooks {
  on_start : (String, String) -> Unit
  on_stop : () -> Unit
}

fn build_profiler_hud(cmds : Array[
@mizchi/gfx.DrawTrianglesCommand
DrawTrianglesCommand], dst : 
@mizchi/gfx.ImageHandle
ImageHandle, shader : 
@mizchi/gfx.ShaderHandle
ShaderHandle, profile : FrameProfile, screen_w : Double, screen_h : Double) -> Unit

fn default_frame_profile() -> FrameProfile

fn[T : 
@mizchi/gfx.GraphicsDriver
GraphicsDriver] render_commands(graphics : T, cmds : Array[
@mizchi/gfx.DrawTrianglesCommand
DrawTrianglesCommand], clear_color? : 
@mizchi/gfx.Color
Color, clear_enabled? : Bool) -> Unit raise

fn reset_lifecycle_hooks() -> Unit

fn run(update~ : (
@mizchi/kagura_core.InputSnapshot
InputSnapshot) -> Unit, draw~ : (EngineContext) -> Array[
@mizchi/gfx.DrawTrianglesCommand
DrawTrianglesCommand], on_frame? : () -> Unit, after_render? : (Double, Double) -> Unit, audio_ctx? : 
@mizchi/kagura_engine/audio.MixerAudioContext
MixerAudioContext, audio_frames_per_tick? : Int, width? : Int, height? : Int, title? : String, canvas? : String) -> Unit

fn[T : EngineGame] run_game(game : T, on_frame? : () -> Unit, after_render? : (Double, Double) -> Unit, audio_ctx? : 
@mizchi/kagura_engine/audio.MixerAudioContext
MixerAudioContext, audio_frames_per_tick? : Int, width? : Int, height? : Int, title? : String, canvas? : String) -> Unit

fn set_lifecycle_hooks(hooks : LifecycleHooks) -> Unit