63 lines
1.2 KiB
Plaintext
63 lines
1.2 KiB
Plaintext
interface Update {
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mut fn update(f64) bool;
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fn display() string;
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}
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struct Clock12Hr {
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// TODO structure member initialization expressions
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bool pm, // = true,
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u8 hours, // = 12,
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u8 minutes, // = 0,
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u8 seconds, // = 0,
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f64 sub, // = 0.0,
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}
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impl Clock12Hr {
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mut fn tick_seconds() {
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.seconds = .seconds + 1;
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if .seconds >= 60 {
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.seconds = 0;
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.tick_minutes();
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}
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}
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mut fn tick_minutes() {
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.minutes = .minutes + 1;
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if .minutes >= 60 {
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.minutes = 0;
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.tick_hours();
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}
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}
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mut fn tick_hours() {
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.hours = .hours + 1;
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if .hours >= 13 {
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.hours = 1;
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} else { // TODO else-if statements
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if hours == 12 {
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.pm = not .pm;
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}
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}
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}
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}
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impl Clock12Hr Update {
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mut fn update(f64 dt) bool {
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let mut dirty = false;
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.sub = .sub + dt;
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while .sub > 1.0 {
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.sub = .sub - 1.0;
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.tick_seconds();
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dirty = true;
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}
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dirty
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}
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fn display() string {
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let pm = if .pm { "PM" } else { "AM" };
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"{}:{}.{} {}".format(.hours, .minutes, .seconds, pm)
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}
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}
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