From d8df9a16bd4f4517b024c17446a94915493d7f3d Mon Sep 17 00:00:00 2001
From: german <german@thesoftwareartisans.com>
Date: Fri, 1 Jan 2021 12:32:29 -0600
Subject: Allow to return up to 16 touch inputs per engine

---
 src/input_common/udp/client.h | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

(limited to 'src/input_common/udp/client.h')

diff --git a/src/input_common/udp/client.h b/src/input_common/udp/client.h
index 00c8b09f5..1cd251ec8 100644
--- a/src/input_common/udp/client.h
+++ b/src/input_common/udp/client.h
@@ -29,6 +29,7 @@ namespace Response {
 struct PadData;
 struct PortInfo;
 struct Version;
+struct TouchPad;
 } // namespace Response
 
 enum class PadMotion {
@@ -50,7 +51,6 @@ struct UDPPadStatus {
     std::string host{"127.0.0.1"};
     u16 port{26760};
     std::size_t pad_index{};
-    PadTouch touch{PadTouch::Undefined};
     PadMotion motion{PadMotion::Undefined};
     f32 motion_value{0.0f};
 };
@@ -93,6 +93,9 @@ public:
     DeviceStatus& GetPadState(const std::string& host, u16 port, std::size_t pad);
     const DeviceStatus& GetPadState(const std::string& host, u16 port, std::size_t pad) const;
 
+    Input::TouchStatus& GetTouchState();
+    const Input::TouchStatus& GetTouchState() const;
+
 private:
     struct ClientData {
         std::string host{"127.0.0.1"};
@@ -122,14 +125,25 @@ private:
     void StartCommunication(std::size_t client, const std::string& host, u16 port,
                             std::size_t pad_index, u32 client_id);
     void UpdateYuzuSettings(std::size_t client, const Common::Vec3<float>& acc,
-                            const Common::Vec3<float>& gyro, bool touch);
+                            const Common::Vec3<float>& gyro);
+
+    // Returns an unused finger id, if there is no fingers available std::nullopt will be
+    // returned
+    std::optional<size_t> GetUnusedFingerID() const;
+
+    // Merges and updates all touch inputs into the touch_status array
+    void UpdateTouchInput(Response::TouchPad& touch_pad, size_t client, size_t id);
 
     bool configuring = false;
 
     // Allocate clients for 8 udp servers
-    const std::size_t max_udp_clients = 32;
-    std::array<ClientData, 4 * 8> clients;
-    Common::SPSCQueue<UDPPadStatus> pad_queue;
+    static constexpr std::size_t MAX_UDP_CLIENTS = 4 * 8;
+    // Each client can have up 2 touch inputs
+    static constexpr std::size_t MAX_TOUCH_FINGERS = MAX_UDP_CLIENTS * 2;
+    std::array<ClientData, MAX_UDP_CLIENTS> clients{};
+    Common::SPSCQueue<UDPPadStatus> pad_queue{};
+    Input::TouchStatus touch_status{};
+    std::array<size_t, MAX_TOUCH_FINGERS> finger_id{};
 };
 
 /// An async job allowing configuration of the touchpad calibration.
-- 
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