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df4e99b050
MobjList count WIP: Checkpoints grant lap bonus help? can't allocate vector fixed tagged line iteration and collision detection Multiplayer animations and map retart fixes Clear between maps
93 lines
1.7 KiB
C++
93 lines
1.7 KiB
C++
// DR. ROBOTNIK'S RING RACERS
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//-----------------------------------------------------------------------------
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// Copyright (C) 2024 by James Robert Roman
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// Copyright (C) 2024 by Kart Krew
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//
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// This program is free software distributed under the
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// terms of the GNU General Public License, version 2.
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// See the 'LICENSE' file for more details.
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//-----------------------------------------------------------------------------
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#ifndef mobj_list_hpp
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#define mobj_list_hpp
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#include <type_traits>
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#include "cxxutil.hpp"
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#include "mobj.hpp"
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#include "mobj_list_view.hpp"
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namespace srb2
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{
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// Requires:
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// void T::next(T*)
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// T* T::next() const
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template <typename T, mobj_t*& Head>
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struct MobjList
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{
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static_assert(std::is_convertible_v<T, mobj_t>);
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MobjList() {}
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T* front() const { return static_cast<T*>(Head); }
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bool empty() const { return !front(); }
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void push_front(T* ptr)
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{
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ptr->next(front());
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front(ptr);
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count_++;
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}
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void erase(T* node)
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{
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if (front() == node)
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{
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front(node->next());
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node->next(nullptr);
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count_--;
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return;
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}
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auto view = this->view();
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auto end = view.end();
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auto it = view.begin();
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SRB2_ASSERT(it != end);
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for (;;)
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{
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T* prev = *it;
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it++;
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if (it == end)
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{
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break;
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}
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if (*it == node)
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{
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prev->next(node->next());
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node->next(nullptr);
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count_--;
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break;
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}
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}
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}
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auto begin() const { return view().begin(); }
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auto end() const { return view().end(); }
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auto count() { return count_; }
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private:
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void front(T* ptr) { Mobj::ManagedPtr {Head} = ptr; }
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auto view() const { return MobjListView(front(), [](T* node) { return node->next(); }); }
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UINT32 count_ = 0;
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};
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}; // namespace srb2
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#endif/*mobj_list_hpp*/
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