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Sources/main.swift
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@ -40,16 +40,9 @@ let keyMap = [
SDLK_s : JoypadButton.BUTTON_B SDLK_s : JoypadButton.BUTTON_B
] ]
var timer = Date.now.addingTimeInterval(0.01666)
var frame = Frame() var frame = Frame()
let bus = Bus(rom: rom, joypad1: joypad1) { ppu in let bus = Bus(rom: rom, joypad1: joypad1) { ppu in
Render.render(ppu, frame: frame) Render.render(ppu, frame: frame)
// wait here until 16.66 ms have passed
// i would use clock_nanosleep but that isn't available cross platform
if timer.timeIntervalSinceNow > 0 {
usleep(UInt32(timer.timeIntervalSinceNow * 1000000))
}
timer.addTimeInterval(0.01666)
SDL_UpdateTexture(texture, nil, frame.data, 256 * 3) SDL_UpdateTexture(texture, nil, frame.data, 256 * 3)
SDL_RenderCopy(canvas, texture, nil, nil) SDL_RenderCopy(canvas, texture, nil, nil)
SDL_RenderPresent(canvas) SDL_RenderPresent(canvas)