23 lines
674 B
C++
23 lines
674 B
C++
#pragma once
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// game_loop — fixed-timestep game loop (Glenn Fiedler) for SDL3 + WASM.
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// Issue 0072b. Decouples physics/sim (fixed dt) from rendering (interp).
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#include <SDL3/SDL.h>
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namespace fn::game {
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struct LoopCfg {
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float fixed_dt = 1.0f / 60.0f;
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int max_steps_per_frame = 5;
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void (*on_fixed_update)(void* user, float dt) = nullptr;
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void (*on_render)(void* user, float interp) = nullptr;
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bool (*should_quit)(void* user) = nullptr; // optional poll
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void* user = nullptr;
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};
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// Blocking on desktop. On WASM uses emscripten_set_main_loop and returns immediately.
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void loop_run(SDL_Window* win, const LoopCfg& cfg);
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} // namespace fn::game
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