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[python/turtle] Make the turtle faster on emscripten

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It was slower than on the calculator
This commit is contained in:
Léa Saviot
2019-03-11 13:51:01 +01:00
committed by EmilieNumworks
parent 43bd5e7044
commit 147c1b4592
1 changed files with 15 additions and 2 deletions
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17
python/port/mod/turtle/turtle.cpp
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@@ -323,11 +323,24 @@ bool Turtle::draw(bool force) {
m_drawn = true;
}
if (m_mileage > 1000) {
/* We sleep every time the turtle walks a mileageLimit amount, to allow user
* interruptions. The length of each sleep is determined by the speed of the
* turtle.
* With emscripten, sleep gives control to the web browser, which decides when
* to return from sleep: this makes the turtle significantly slower on the web
* emulator than on the calculator. We thus decided to sleep less often on the
* emscripten platform. */
#if __EMSCRIPTEN__
constexpr KDCoordinate mileageLimit = 10000;
#else
constexpr KDCoordinate mileageLimit = 1000;
#endif
if (m_mileage > mileageLimit) {
if (micropython_port_interruptible_msleep(1 + (m_speed == 0 ? 0 : 3 * (k_maxSpeed - m_speed)))) {
return true;
}
m_mileage -= 1000;
m_mileage -= mileageLimit;
}
return false;
}