From a1105b80541010fa301eff00d3b512a1f910a3d1 Mon Sep 17 00:00:00 2001
From: Pirulax <patrikjankovics7@gmail.com>
Date: Sat, 9 Mar 2024 22:29:33 +0100
Subject: [PATCH] `CTaskSimpleDoHandSignal` (#464)

---
 .../TaskTypes/TaskSimpleDoHandSignal.cpp      | 49 +++++++++++++++++++
 .../Tasks/TaskTypes/TaskSimpleDoHandSignal.h  | 38 ++++++++++++++
 2 files changed, 87 insertions(+)
 create mode 100644 source/game_sa/Tasks/TaskTypes/TaskSimpleDoHandSignal.cpp
 create mode 100644 source/game_sa/Tasks/TaskTypes/TaskSimpleDoHandSignal.h

diff --git a/source/game_sa/Tasks/TaskTypes/TaskSimpleDoHandSignal.cpp b/source/game_sa/Tasks/TaskTypes/TaskSimpleDoHandSignal.cpp
new file mode 100644
index 0000000000..11f3006d9a
--- /dev/null
+++ b/source/game_sa/Tasks/TaskTypes/TaskSimpleDoHandSignal.cpp
@@ -0,0 +1,49 @@
+#include "StdInc.h"
+#include "TaskSimpleDoHandSignal.h"
+#include "TaskComplexPlayHandSignalAnim.h"
+
+void CTaskSimpleDoHandSignal::InjectHooks() {
+    RH_ScopedVirtualClass(CTaskSimpleDoHandSignal, 0x86fa68, 9);
+    RH_ScopedCategory("Tasks/TaskTypes");
+
+    RH_ScopedInstall(Constructor, 0x660880);
+    RH_ScopedInstall(Destructor, 0x6608B0);
+
+    RH_ScopedVMTInstall(Clone, 0x6608C0);
+    RH_ScopedVMTInstall(GetTaskType, 0x6608A0);
+    RH_ScopedVMTInstall(MakeAbortable, 0x660930);
+    RH_ScopedVMTInstall(ProcessPed, 0x660940);
+}
+
+CTaskSimpleDoHandSignal::CTaskSimpleDoHandSignal(const CTaskSimpleDoHandSignal& o) :
+    m_Initialized{ o.m_Initialized }
+{
+}
+
+// 0x660940
+bool CTaskSimpleDoHandSignal::ProcessPed(CPed* ped) {
+    if (!ped->GetIsOnScreen()) {
+        return true;
+    }
+
+    const auto animTask = ped->GetTaskManager().GetTaskSecondary(TASK_SECONDARY_PARTIAL_ANIM);
+
+    if (m_Initialized) {
+        return !animTask || !CTask::IsA<TASK_COMPLEX_HANDSIGNAL_ANIM>(animTask);
+    }
+
+    if (animTask) {
+        if (CTask::IsA<TASK_COMPLEX_HANDSIGNAL_ANIM>(animTask)) {
+            return true;
+        }
+        animTask->MakeAbortable(ped, ABORT_PRIORITY_URGENT, nullptr);
+        return false;
+    }
+
+    ped->GetTaskManager().SetTaskSecondary(
+        new CTaskComplexPlayHandSignalAnim{},
+        TASK_SECONDARY_PARTIAL_ANIM
+    );
+    m_Initialized = true;
+    return false;
+}
diff --git a/source/game_sa/Tasks/TaskTypes/TaskSimpleDoHandSignal.h b/source/game_sa/Tasks/TaskTypes/TaskSimpleDoHandSignal.h
new file mode 100644
index 0000000000..d26a5a7b84
--- /dev/null
+++ b/source/game_sa/Tasks/TaskTypes/TaskSimpleDoHandSignal.h
@@ -0,0 +1,38 @@
+#pragma once
+
+#include "TaskSimple.h"
+
+class CTaskSimpleDoHandSignal;
+class CPed;
+class CEvent;
+
+class NOTSA_EXPORT_VTABLE CTaskSimpleDoHandSignal : public CTaskSimple {
+public:
+    static void InjectHooks();
+
+    static constexpr auto Type = eTaskType::TASK_SIMPLE_DO_HAND_SIGNAL;
+
+    CTaskSimpleDoHandSignal() = default;
+    CTaskSimpleDoHandSignal(const CTaskSimpleDoHandSignal&);
+    ~CTaskSimpleDoHandSignal() = default;
+
+    CTask*    Clone() const override { return new CTaskSimpleDoHandSignal{*this}; }
+    eTaskType GetTaskType() const override { return Type; }
+    bool      MakeAbortable(CPed* ped, eAbortPriority priority, CEvent const* event) override { return true; }
+    bool      ProcessPed(CPed* ped) override;
+
+private: // Wrappers for hooks
+    // 0x660880
+    CTaskSimpleDoHandSignal* Constructor() {
+        this->CTaskSimpleDoHandSignal::CTaskSimpleDoHandSignal();
+        return this;
+    }
+    // 0x6608B0
+    CTaskSimpleDoHandSignal* Destructor() {
+        this->CTaskSimpleDoHandSignal::~CTaskSimpleDoHandSignal();
+        return this;
+    }
+
+protected:
+    bool m_Initialized{};
+};