Merge pull request #132 from tsoding/59

(#59) Add milliseconds support to the chat log format

sample.txt

@@ -1,6 +1,6 @@
 [0:00:00] <Tsoding> /me is offline
 [0:00:01] <Tsoding> WAYTOODANK monkaTOS WAYTOODANK monkaTOS WAYTOODANK monkaTOS WAYTOODANK monkaTOS WAYTOODANK monkaTOS 
-[0:00:01] <Tsoding> forsenPls forsenPls forsenPls forsenPls forsenPls forsenPls forsenPls forsenPls forsenPls forsenPls
+[0:00:01.50] <Tsoding> forsenPls forsenPls forsenPls forsenPls forsenPls forsenPls forsenPls forsenPls forsenPls forsenPls
 [0:00:02] <zhiayang> AYAYA AYAYA AYAYA AYAYA AYAYA AYAYA AYAYA AYAYA AYAYA AYAYA
 [0:00:03] <herrhotzenplotz> phpHop phpHop phpHop phpHop phpHop phpHop phpHop phpHop phpHop phpHop
 [0:00:04] <Tsoding> HELL YEEEAH BROTHAA

src/vodus_main.cpp

@@ -23,14 +23,14 @@ void sample_chat_log_animation(Message *messages,
     const float VODUS_DELTA_TIME_SEC = 1.0f / params.fps;
     const size_t TRAILING_BUFFER_SEC = 2;
     assert(messages_size > 0);
-    const float total_t = messages[messages_size - 1].timestamp + TRAILING_BUFFER_SEC;
+    const float total_t = (float) messages[messages_size - 1].timestamp / 1000.0f + TRAILING_BUFFER_SEC;
     for (; message_end < messages_size; ++frame_index) {
         if (message_cooldown <= 0.0f) {
             message_buffer->push(messages[message_end], face, emote_cache, params);
 
             message_end += 1;
-            auto t1 = messages[message_end - 1].timestamp;
-            auto t2 = messages[message_end].timestamp;
+            auto t1 = (float) messages[message_end - 1].timestamp / 1000.0f;
+            auto t2 = (float) messages[message_end].timestamp / 1000.0f;
             message_cooldown = t2 - t1;
         }
 

src/vodus_message.cpp

@@ -1,6 +1,6 @@
 struct Message
 {
-    time_t timestamp;
+    uint64_t timestamp;
     String_View nickname;
     String_View message;
 
@@ -156,6 +156,16 @@ struct Message_Buffer
     }
 };
 
+bool expect_optional_char(String_View *input, char x)
+{
+    if (input->count > 0 && *input->data == x) {
+        input->chop(1);
+        return true;
+    }
+
+    return false;
+}
+
 void expect_char(String_View *input, char x)
 {
     if (input->count == 0 || *input->data != x) {
@@ -175,7 +185,7 @@ String_View chop_digits(String_View *input)
     return digits;
 }
 
-time_t chop_timestamp(String_View *input)
+uint64_t chop_timestamp(String_View *input)
 {
     *input = input->trim();
 
@@ -185,12 +195,27 @@ time_t chop_timestamp(String_View *input)
     String_View minutes = chop_digits(input);
     expect_char(input, ':');
     String_View seconds = chop_digits(input);
+
+    uint64_t mseconds_value = 0;
+    if (expect_optional_char(input, '.')) {
+        auto mseconds = chop_digits(input);
+        for (size_t i = 0; i < 3; ++i) {
+            uint64_t x = 0;
+            if (mseconds.count > 0) {
+                x = *mseconds.data - '0';
+                mseconds.chop(1);
+            }
+            mseconds_value = mseconds_value * 10 + x;
+        }
+    }
+
     expect_char(input, ']');
 
-    const time_t timestamp =
-        hours.as_integer<time_t>().unwrap * 60 * 60 +
-        minutes.as_integer<time_t>().unwrap * 60 +
-        seconds.as_integer<time_t>().unwrap;
+    const uint64_t timestamp =
+        (hours.as_integer<uint64_t>().unwrap * 60 * 60 +
+         minutes.as_integer<uint64_t>().unwrap * 60 +
+         seconds.as_integer<uint64_t>().unwrap) * 1000 +
+        mseconds_value;
 
     return timestamp;
 }
@@ -214,7 +239,7 @@ size_t parse_messages_from_string_view(String_View input, Message **messages, Vi
     size_t messages_size = 0;
     while (input.count > 0 && messages_size < expected_messages_size) {
         String_View message = input.chop_by_delim('\n');
-        (*messages)[messages_size].timestamp = (int) chop_timestamp(&message);
+        (*messages)[messages_size].timestamp = chop_timestamp(&message);
         (*messages)[messages_size].nickname = chop_nickname(&message);
         (*messages)[messages_size].message = message.trim();
         messages_size++;