37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
/*
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This is a code snippet for how to use the time remaining on the timer in your puzzle module.
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To avoid the time left getting stale and inaccurate, we instead calculate when the timer will run
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out and store this deadline. When we need to get the time left, we can then calculate it.
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This does not handle some edgecases:
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- times and timedeltas are stored in a 32-bit unsigned int, this can overflow after ~50 days, causing all sorts of weirdness
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=> avoid having modules powered on for a long time
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- the get_millis_remaining() getting called before receiving the first state update
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=> try to only call this function after human input
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=> alternatively, keep track of whether you can call the `get_millis_remaining` function already in a boolean
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*/
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uint32_t deadline;
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void callback_state(uint32_t time_left, uint8_t strikes, uint8_t max_strikes, uint8_t puzzle_modules_left) {
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// Mark arguments as not used
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(void)strikes;
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(void)max_strikes;
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(void)puzzle_modules_left;
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deadline = millis() + time_left;
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}
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uint32_t get_millis_remaining() {
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return deadline - millis();
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}
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void loop() {
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/* ... */
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bool is_message_valid = obus_module::loopPuzzle(&message, callback_game_start, callback_game_stop, empty_callback_info, callback_state);
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/* ... */
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}
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