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https://github.com/Dingo-Shenanigans/ReSkate.git
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91 lines
4.4 KiB
C++
91 lines
4.4 KiB
C++
#include "script_natives.h"
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#include "Engine/Core/Log/logging.h"
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#include "Engine/Game/Build/addresses.h"
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#include "Engine/Game/Build/20260929/script_natives.h"
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#include <algorithm>
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#include <array>
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#include <atomic>
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#include "local_challenge_trace.h"
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#include "local_entitlement_trigger_runtime.h"
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namespace dingosdk::profile_runtime {
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namespace {
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// Board wear. The retail ownable-context resolve (0xdbfa3b23)
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// is a stub that always reports failure, so the authored UpdateBoardWear graph
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// takes its "no saved wear" branch on every tick and writes 32 zero bytes over
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// the six wear floats at skater-observer component +0x120 before its own
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// accumulate section reads them back. Wear can therefore never exceed a single
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// tick's increment. Dropping exactly that write lets the accumulator carry
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// across ticks. The authored graph only runs while DingoAdvanceSettings
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// BoardWearEnabled is set, so this is already gated by the `boardwear` control
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// and is inert otherwise; every other field, component and graph is untouched.
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constexpr std::array<std::uint32_t, 2> board_wear_graphs{0x73271441, 0x81d6d4c8};
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// The six wear floats of the skater-observer component start here.
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constexpr std::uint32_t board_wear_offset = 0x120;
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std::atomic<unsigned> board_wear_holds{};
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std::atomic<bool> board_wear_reset_pending{};
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// True for the authored per-tick zeroing of the wear block that must be held.
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bool hold_board_wear_reset(std::uintptr_t* arguments) noexcept {
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std::uintptr_t resource{}; std::uint32_t key{};
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if (!arguments || !executing_expression ||
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!challenge_trace_identity(executing_expression, resource, key) ||
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std::find(board_wear_graphs.begin(), board_wear_graphs.end(), key) == board_wear_graphs.end())
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return false;
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const auto argv = reinterpret_cast<std::uintptr_t>(arguments);
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std::uintptr_t base_slot{}, count_slot{}, offsets{}, source{};
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std::uint32_t base_offset{}, offset{}; char count{};
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std::array<std::uint8_t, 32> value{};
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// One field, at the wear block, whose incoming bytes are entirely zero.
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if (!read(argv + 3 * 8, base_slot) || !read(base_slot, base_offset) ||
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!read(argv + 4 * 8, count_slot) || !read(count_slot, count) || count != 1 ||
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!read(argv + 5 * 8, offsets) || !read(offsets, offset) ||
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offset - base_offset != board_wear_offset ||
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!read(argv + 7 * 8, source) || !read_bytes(source, value.data(), value.size())) return false;
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if (!std::all_of(value.begin(), value.end(), [](std::uint8_t byte) { return byte == 0; })) return false;
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// A queued reset lets exactly one authored zeroing write through to the
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// game, which is how the block returns to zero without writing it here.
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return !board_wear_reset_pending.exchange(false, std::memory_order_relaxed);
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}
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// Logs the first held reset.
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void note_board_wear_hold() {
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if (board_wear_holds.fetch_add(1, std::memory_order_relaxed) == 0)
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logging::log(logging::Level::info, logging::Channel::progression,
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"Board wear: holding the authored per-tick reset of the wear block.");
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}
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// SetFields (0xbdc6524d) writes several component fields at once; the VM calls
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// it through its table row, so the row is rebound to this forwarder.
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using SetFields = void (*)(std::uintptr_t, std::uintptr_t, std::uintptr_t*);
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SetFields set_fields_original{};
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void set_fields_hook(std::uintptr_t a, std::uintptr_t b, std::uintptr_t* arguments) {
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if (hold_board_wear_reset(arguments)) {
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note_board_wear_hold();
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return;
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}
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set_fields_original(a, b, arguments);
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}
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}
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void install_board_wear_hold(std::uintptr_t base) noexcept {
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static bool attempted{};
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if (attempted || !base) return;
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attempted = true;
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try {
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constexpr std::uintptr_t entry = addr::script_natives::set_fields_entry;
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std::uint32_t hash{};
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if (!read(base + entry, hash) || hash != 0xbdc6524d) return;
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set_fields_original = reinterpret_cast<SetFields>(base + addr::script_natives::set_fields);
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DWORD protect{};
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if (!VirtualProtect(reinterpret_cast<void*>(base + entry + 8), 8, PAGE_READWRITE, &protect)) return;
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*reinterpret_cast<std::uintptr_t*>(base + entry + 8) = reinterpret_cast<std::uintptr_t>(&set_fields_hook);
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VirtualProtect(reinterpret_cast<void*>(base + entry + 8), 8, protect, &protect);
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} catch (...) {}
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}
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void reset_board_wear() noexcept {
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board_wear_reset_pending.store(true, std::memory_order_relaxed);
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}
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}
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