more buttons+multitouch

src/protocol.cpp

@@ -153,6 +153,28 @@ void Protocol::sendClick(float x, float y, bool down)
     send(CMD_TOUCH, false, buf, 16);
 }
 
+
+void Protocol::sendMultiTouch(const std::vector<Protocol::Touch>& touches)
+{
+    if (touches.empty()) return;
+
+    const size_t touchSize = 16;
+    const size_t totalSize = touches.size() * touchSize;
+
+    std::vector<uint8_t> buf(totalSize);
+    uint8_t* p = buf.data();
+
+    for (const auto& t : touches) {
+        write_float_le(p + 0,  t.x);
+        write_float_le(p + 4,  t.y);
+        write_uint32_le(p + 8,  static_cast<uint32_t>(t.action));
+        write_uint32_le(p + 12, t.id);
+        p += touchSize;
+    }
+
+    send(CMD_MULTI_TOUCH, false, buf.data(), totalSize);
+}
+
 void Protocol::sendMove(float dx, float dy)
 {
     uint8_t buf[16];