From 48e26ce606644de7b529f819d6aeffcdceef2ffc Mon Sep 17 00:00:00 2001
From: Adam Malczewski <github@tradam.dev>
Date: Sat, 18 Apr 2026 17:48:09 +0900
Subject: initial

---
 src/main.c | 147 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 src/main.c

(limited to 'src/main.c')

diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..0b9c795
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,147 @@
+#include "raylib.h"
+#include <string.h>
+#include <ctype.h>
+
+typedef struct {
+    Music music;
+    bool loaded;
+    bool playing;
+    float duration;
+    char filename[256];
+} PlayerState;
+
+static int strcasecmp_ext(const char *a, const char *b)
+{
+    while (*a && *b) {
+        if (tolower((unsigned char)*a) != tolower((unsigned char)*b)) return 1;
+        a++; b++;
+    }
+    return *a != *b;
+}
+
+static const char *basename_from_path(const char *path)
+{
+    const char *last = path;
+    for (const char *p = path; *p; p++) {
+        if (*p == '/' || *p == '\\') last = p + 1;
+    }
+    return last;
+}
+
+static void seek_to(PlayerState *s, float target)
+{
+    if (target < 0.0f) target = 0.0f;
+    if (target > s->duration) target = s->duration;
+    SeekMusicStream(s->music, target);
+}
+
+int main(void)
+{
+    InitWindow(1920, 1080, "Study Player");
+    InitAudioDevice();
+    SetTargetFPS(60);
+
+    PlayerState state = { 0 };
+
+    while (!WindowShouldClose())
+    {
+        /* --- 1.1 Drag & drop file loading --- */
+        if (IsFileDropped())
+        {
+            FilePathList files = LoadDroppedFiles();
+            if (files.count > 0)
+            {
+                const char *path = files.paths[0];
+                const char *ext = GetFileExtension(path);
+
+                if (ext != NULL && strcasecmp_ext(ext, ".mp3") == 0)
+                {
+                    /* Unload previous */
+                    if (state.loaded)
+                    {
+                        StopMusicStream(state.music);
+                        UnloadMusicStream(state.music);
+                        state.loaded = false;
+                        state.playing = false;
+                    }
+
+                    state.music = LoadMusicStream(path);
+                    state.duration = GetMusicTimeLength(state.music);
+                    state.loaded = true;
+                    state.playing = true;
+
+                    const char *base = basename_from_path(path);
+                    strncpy(state.filename, base, sizeof(state.filename) - 1);
+                    state.filename[sizeof(state.filename) - 1] = '\0';
+
+                    PlayMusicStream(state.music);
+                }
+            }
+            UnloadDroppedFiles(files);
+        }
+
+        /* --- 1.4 Music stream update --- */
+        if (state.loaded)
+        {
+            UpdateMusicStream(state.music);
+        }
+
+        /* --- 1.2 Play/pause with rewind --- */
+        if (state.loaded && IsKeyPressed(KEY_SPACE))
+        {
+            if (state.playing)
+            {
+                float pos = GetMusicTimePlayed(state.music);
+                PauseMusicStream(state.music);
+                float rewind = pos - 1.0f;
+                if (rewind < 0.0f) rewind = 0.0f;
+                SeekMusicStream(state.music, rewind);
+                state.playing = false;
+            }
+            else
+            {
+                ResumeMusicStream(state.music);
+                state.playing = true;
+            }
+        }
+
+        /* --- 1.3 Arrow key seeking --- */
+        if (state.loaded && IsKeyPressed(KEY_LEFT))
+        {
+            float pos = GetMusicTimePlayed(state.music);
+            seek_to(&state, pos - 5.0f);
+        }
+        if (state.loaded && IsKeyPressed(KEY_RIGHT))
+        {
+            float pos = GetMusicTimePlayed(state.music);
+            seek_to(&state, pos + 5.0f);
+        }
+
+        /* --- Drawing --- */
+        BeginDrawing();
+        ClearBackground((Color){ 26, 26, 46, 255 });
+
+        if (state.loaded)
+        {
+DrawText(state.filename, 40, 40, 40, RAYWHITE);
+DrawText(state.playing ? "Playing" : "Paused", 40, 90, 30, GRAY);
+        }
+        else
+        {
+DrawText("Drop an MP3 file here to play", 540, 340, 40, RAYWHITE);
+        }
+
+        EndDrawing();
+    }
+
+    if (state.loaded)
+    {
+        StopMusicStream(state.music);
+        UnloadMusicStream(state.music);
+    }
+
+    CloseAudioDevice();
+    CloseWindow();
+
+    return 0;
+}
-- 
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