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more precise timing

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renamed Time::elapsed -> Time::seconds, change type to double
updated game to store ticks (microseconds) instead of milliseconds for better update precision
This commit is contained in:
Noel Berry
2021-02-06 00:13:50 -08:00
parent 2c2d668927
commit ac58379de8
13 changed files with 101 additions and 87 deletions
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23
src/containers/str.cpp
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@ -6,13 +6,6 @@
using namespace Blah;
const uint16_t UTF8_LEAD_SURROGATE_MIN = 0xd800u;
const uint16_t UTF8_LEAD_SURROGATE_MAX = 0xdbffu;
const uint16_t UTF8_TRAIL_SURROGATE_MIN = 0xdc00u;
const uint16_t UTF8_TRAIL_SURROGATE_MAX = 0xdfffu;
const uint16_t UTF8_LEAD_OFFSET = UTF8_LEAD_SURROGATE_MIN - (0x10000 >> 10);
const uint32_t UTF8_SURROGATE_OFFSET = 0x10000u - (UTF8_LEAD_SURROGATE_MIN << 10) - UTF8_TRAIL_SURROGATE_MIN;
char Str::empty_buffer[1] = { '\0' };
bool Str::operator==(const Str& rhs) const
@ -217,24 +210,30 @@ Str& Str::append_fmt(const char* fmt, ...)
return *this;
}
Str& Str::append_utf16(const uint16_t* start, const uint16_t* end, bool swapEndian)
Str& Str::append_utf16(const uint16_t* start, const uint16_t* end, bool swap_endian)
{
// converts utf16 into utf8
// more info: https://en.wikipedia.org/wiki/UTF-16#Description
const uint16_t surrogate_min = 0xd800u;
const uint16_t surrogate_max = 0xdbffu;
while (start != end)
{
uint16_t next = (*start++);
if (swapEndian)
if (swap_endian)
next = ((next & 0xff) << 8 | ((next & 0xff00) >> 8));
uint32_t cp = 0xffff & next;
if ((cp >= UTF8_LEAD_SURROGATE_MIN && cp <= UTF8_LEAD_SURROGATE_MAX))
if ((cp >= surrogate_min && cp <= surrogate_max))
{
next = (*start++);
if (swapEndian)
if (swap_endian)
next = ((next & 0xff) << 8 | ((next & 0xff00) >> 8));
uint32_t trail = 0xffff & next;
cp = (cp << 10) + trail + UTF8_SURROGATE_OFFSET;
cp = (cp << 10) + trail + 0x10000u - (surrogate_min << 10) - 0xdc00u;
}
append(cp);