feat: display beats as arrows with correct time offset

1 files changed, 20 insertions, 0 deletions

diff --git a/lib/simfile.dart b/lib/simfile.dart
index 20e79e8..2174de9 100644
--- a/lib/simfile.dart
+++ b/lib/simfile.dart
@@ -1,3 +1,4 @@
+import 'dart:ffi';
 import 'dart:io';
 
 enum Difficulty { Beginner, Easy, Medium, Hard, Challenge, Edit }
@@ -42,6 +43,9 @@ class Simfile {
 
   Chart? chartSimplest;
 
+  Map<double, double> bpms = {};
+  double offset = 0;
+
   Simfile(this.path);
 
   void load() {
@@ -55,6 +59,22 @@ class Simfile {
       List<String> keys =
           fieldData[1]!.split(':').map((key) => key.trim()).toList();
       String value = fieldData[2]!;
+      if (keys[0] == "BPMS") {
+        for (final pairRaw in value.split(',')) {
+          List<String> pair = pairRaw.split('=');
+          if (pair.length != 2) {
+            continue;
+          }
+          double time = double.parse(pair[0]);
+          double bpm = double.parse(pair[1]);
+          bpms[time] = bpm;
+        }
+      }
+
+      if (keys[0] == "OFFSET") {
+        offset = double.parse(value);
+      }
+
       if (keys[0] != "NOTES") {
         tags[keys[0]] = value;
         continue;