Add Dolphin-compatible input expressions and GCPadNew.ini import, DualSense L/R remapping, vibration toggle (#89)

* Add Dolphin-compatible input expressions and GCPadNew.ini import

Rebased onto current main; addresses both CodeRabbit reviews on #89.

- Expression engine matching Dolphin's semantics: doubles rather than
  booleans, 0.5 press threshold, & as min, | as max, and the functions if,
  min, max, clamp, abs, sqrt, pow, sin, cos, tan, deadzone, timer, toggle,
  hold, tap, pulse and smooth. Timing uses a steady clock in seconds, as
  Dolphin does, so a copied expression behaves identically.

- Expressions bind to the GameCube buttons and triggers, combined with the
  existing button mapping rather than replacing it, and are skipped while
  the settings overlay holds input.

- Import reads [GCPadN] from the Dolphin config directory or from
  GCPadNew.ini beside the executable. Stick axes are not expression driven
  and keep their normal mapping.

- Fixes #74: a digital button bound to L or R now reports a fully pulled
  analog trigger, plus a PlayStation preset and a vibration toggle.

Review fixes: config paths round-trip through RuntimeConfigFile::PathToUtf8
and PathFromUtf8 so non-ASCII paths open correctly on Windows, and the
duplicated exists branch is gone; the tap count is clamped before the
unsigned conversion; the expression editor uses resizable storage via
ImGuiInputTextFlags_CallbackResize so a long expression cannot be saved
truncated; clamp bounds are ordered before std::clamp; <cstdlib> is included
for std::strtod; non-finite values are rejected at the evaluator boundary as
well as at the deadzone and timer divisions; and InputBindings::Reload() runs
from InitializeRuntimeSettings rather than the vibration handler.

runtime/tests/test_expr.cpp covers operator precedence, each stateful
function and every case raised in review.

Third review round: smooth() guards NaN as well as infinity so a zero rate
cannot latch a non-finite value in node state; division evaluates both operands
so stateful functions in the left subtree still update when the divisor is zero;
the expression editor clears stale errors when the port changes; and
runtime/tests/test_expr.cpp is registered with CTest as mkw_input_expr_tests,
following the existing test targets.

* Update runtime/src/input_expr.cpp

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* Update runtime/src/input_expr.cpp

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* Update runtime/src/input_expr.cpp

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
This commit is contained in:
Nicholas Bly
2026-09-05 04:07:05 -04:00
committed by GitHub
parent e34f055b3a
commit be153e0fa0
11 changed files with 1693 additions and 87 deletions
+13 -1
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@@ -46,7 +46,9 @@ Press **F10** while the game window has focus:
- Internal resolution
- FPS counter
- Controller assignment for all four ports
- Full per-controller button mapping
- Full per-controller button mapping, including the bumpers
- Dolphin-syntax input expressions and GCPadNew.ini import
- Controller vibration on/off
- Volume, instant mute, and the music ducking toggle
Everything you change is saved to `Config.toml` on the spot and restored next launch.
@@ -56,6 +58,16 @@ Controllers are fed to the game as a GameCube controller.
Mappings are positional (`south`, `east`, `west`, `north`) rather than Xbox-labelled, so the
same config makes sense on Xbox, PlayStation, Nintendo and generic SDL pads alike, and extra
inputs like paddles, touchpads and share buttons show up when the hardware reports them.
**Dolphin-compatible input expressions.**
Each GameCube control can carry an expression in Dolphin's input syntax, with the same operators
(`!` `&` `|` `^`) and the same functions (`if`, `min`, `max`, `clamp`, `timer`, `toggle`, `hold`,
`tap`, `pulse`, `smooth`, `deadzone`), evaluated against the same wall-clock timing. A Dolphin
`GCPadNew.ini` can be imported directly from the F10 bar. Stick axes are not covered by expressions
and keep their normal mapping.
**Vibration toggle.**
Force feedback can be turned off for every port at once.
The official Wii U / Switch GameCube adapter (WUP-028) works too; as with Dolphin, on Windows the
adapter must be switched to the WinUSB driver once (Zadig).
+9
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@@ -277,6 +277,15 @@ target_link_libraries(mkw_platform_paths_tests PRIVATE mkw_platform)
target_compile_features(mkw_platform_paths_tests PRIVATE cxx_std_17)
add_test(NAME mkw_platform_paths_tests COMMAND mkw_platform_paths_tests)
# The input expression engine is self-contained, so it can be exercised without
# linking the runtime or SDL.
add_executable(mkw_input_expr_tests
"${CMAKE_CURRENT_LIST_DIR}/tests/test_expr.cpp"
"${CMAKE_CURRENT_LIST_DIR}/src/input_expr.cpp")
target_include_directories(mkw_input_expr_tests PRIVATE "${CMAKE_CURRENT_LIST_DIR}/include")
target_compile_features(mkw_input_expr_tests PRIVATE cxx_std_17)
add_test(NAME mkw_input_expr_tests COMMAND mkw_input_expr_tests)
# HostContext deliberately keeps the platform-specific context primitive out
# of fiber_manager.cpp. Exercise the Linux libco handoff directly so future
# refactors cannot silently remove its headers, implementation, or link edge.
+159
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@@ -0,0 +1,159 @@
#pragma once
// The single vocabulary shared by everything that has to turn a Config.toml
// controller name into a real button: the F10 settings bar, the macro engine,
// and the startup mapping pass. Keeping one table here means a name that the
// settings bar offers is always a name the config parser accepts, and vice
// versa; the two used to drift because each side carried its own copy.
#include <algorithm>
#include <array>
#include <cstdint>
#include <string>
#include <string_view>
#include <SDL3/SDL_gamepad.h>
#include <dolphin/pad.h>
namespace ControllerNames {
// A GameCube button as the game sees it, with the Config.toml key that selects
// it. Order matches RuntimeConfigFile::kControllerButtonKeys.
struct GameCubeButtonItem {
const char* configKey;
const char* label;
PADButton padButton;
};
inline constexpr std::array<GameCubeButtonItem, PAD_BUTTON_COUNT> kGameCubeButtons = {{
{"a", "A", PAD_BUTTON_A},
{"b", "B", PAD_BUTTON_B},
{"x", "X", PAD_BUTTON_X},
{"y", "Y", PAD_BUTTON_Y},
{"start", "Start", PAD_BUTTON_START},
{"z", "Z", PAD_TRIGGER_Z},
{"l", "L", PAD_TRIGGER_L},
{"r", "R", PAD_TRIGGER_R},
{"up", "D-pad Up", PAD_BUTTON_UP},
{"down", "D-pad Down", PAD_BUTTON_DOWN},
{"left", "D-pad Left", PAD_BUTTON_LEFT},
{"right", "D-pad Right", PAD_BUTTON_RIGHT},
}};
// A physical button on the host pad. Names are positional (south/east/...)
// rather than Xbox-labelled so one config reads the same on any hardware.
struct NativeButtonItem {
const char* configName;
const char* label;
uint32_t nativeButton;
};
inline constexpr std::array<NativeButtonItem, SDL_GAMEPAD_BUTTON_COUNT + 1> kNativeButtons = {{
{"unmapped", "Unmapped / analog trigger", PAD_NATIVE_BUTTON_INVALID},
{"south", "South (A / Cross)", SDL_GAMEPAD_BUTTON_SOUTH},
{"east", "East (B / Circle)", SDL_GAMEPAD_BUTTON_EAST},
{"west", "West (X / Square)", SDL_GAMEPAD_BUTTON_WEST},
{"north", "North (Y / Triangle)", SDL_GAMEPAD_BUTTON_NORTH},
{"back", "Back / Select / Create", SDL_GAMEPAD_BUTTON_BACK},
{"guide", "Guide / Home / PS", SDL_GAMEPAD_BUTTON_GUIDE},
{"start", "Start / Options", SDL_GAMEPAD_BUTTON_START},
{"left_stick", "Left stick click (L3)", SDL_GAMEPAD_BUTTON_LEFT_STICK},
{"right_stick", "Right stick click (R3)", SDL_GAMEPAD_BUTTON_RIGHT_STICK},
{"left_shoulder", "Left bumper (LB / L1)", SDL_GAMEPAD_BUTTON_LEFT_SHOULDER},
{"right_shoulder", "Right bumper (RB / R1)", SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER},
{"dpad_up", "D-pad Up", SDL_GAMEPAD_BUTTON_DPAD_UP},
{"dpad_down", "D-pad Down", SDL_GAMEPAD_BUTTON_DPAD_DOWN},
{"dpad_left", "D-pad Left", SDL_GAMEPAD_BUTTON_DPAD_LEFT},
{"dpad_right", "D-pad Right", SDL_GAMEPAD_BUTTON_DPAD_RIGHT},
{"misc1", "Misc 1 / Share / Mic", SDL_GAMEPAD_BUTTON_MISC1},
{"right_paddle1", "Right paddle 1", SDL_GAMEPAD_BUTTON_RIGHT_PADDLE1},
{"left_paddle1", "Left paddle 1", SDL_GAMEPAD_BUTTON_LEFT_PADDLE1},
{"right_paddle2", "Right paddle 2", SDL_GAMEPAD_BUTTON_RIGHT_PADDLE2},
{"left_paddle2", "Left paddle 2", SDL_GAMEPAD_BUTTON_LEFT_PADDLE2},
{"touchpad", "Touchpad click", SDL_GAMEPAD_BUTTON_TOUCHPAD},
{"misc2", "Misc 2", SDL_GAMEPAD_BUTTON_MISC2},
{"misc3", "Misc 3 / GC L click", SDL_GAMEPAD_BUTTON_MISC3},
{"misc4", "Misc 4 / GC R click", SDL_GAMEPAD_BUTTON_MISC4},
{"misc5", "Misc 5", SDL_GAMEPAD_BUTTON_MISC5},
{"misc6", "Misc 6", SDL_GAMEPAD_BUTTON_MISC6},
}};
inline std::string TrimToken(std::string_view token) {
const size_t begin = token.find_first_not_of(" \t");
if (begin == std::string_view::npos) {
return {};
}
const size_t end = token.find_last_not_of(" \t");
return std::string(token.substr(begin, end - begin + 1));
}
inline const NativeButtonItem* FindNativeButton(std::string_view configName) {
const std::string name = TrimToken(configName);
const auto it = std::find_if(kNativeButtons.begin(), kNativeButtons.end(),
[&](const NativeButtonItem& item) { return name == item.configName; });
return it == kNativeButtons.end() ? nullptr : &*it;
}
// Falls back to the "unmapped" entry so callers always have a label to draw.
inline const NativeButtonItem& NativeButtonForValue(uint32_t nativeButton) {
const auto it = std::find_if(kNativeButtons.begin(), kNativeButtons.end(),
[&](const NativeButtonItem& item) { return nativeButton == item.nativeButton; });
return it == kNativeButtons.end() ? kNativeButtons.front() : *it;
}
inline const GameCubeButtonItem* FindGameCubeButton(std::string_view configKey) {
const std::string key = TrimToken(configKey);
const auto it = std::find_if(kGameCubeButtons.begin(), kGameCubeButtons.end(),
[&](const GameCubeButtonItem& item) { return key == item.configKey; });
return it == kGameCubeButtons.end() ? nullptr : &*it;
}
// "up" or "up,a" -> the OR of those GC button bits. Unknown names are skipped so
// a typo costs one button instead of the whole macro.
inline uint16_t GameCubeMaskFromKeys(std::string_view keys) {
uint16_t mask = 0;
size_t begin = 0;
while (begin <= keys.size()) {
const size_t comma = keys.find(',', begin);
const std::string_view token =
keys.substr(begin, comma == std::string_view::npos ? std::string_view::npos : comma - begin);
if (const GameCubeButtonItem* item = FindGameCubeButton(token)) {
mask |= static_cast<uint16_t>(item->padButton);
}
if (comma == std::string_view::npos) {
break;
}
begin = comma + 1;
}
return mask;
}
inline std::string GameCubeKeysFromMask(uint16_t mask) {
std::string keys;
for (const auto& item : kGameCubeButtons) {
if ((mask & static_cast<uint16_t>(item.padButton)) == 0) {
continue;
}
if (!keys.empty()) {
keys += ',';
}
keys += item.configKey;
}
return keys;
}
inline std::string GameCubeLabelsFromMask(uint16_t mask) {
std::string labels;
for (const auto& item : kGameCubeButtons) {
if ((mask & static_cast<uint16_t>(item.padButton)) == 0) {
continue;
}
if (!labels.empty()) {
labels += " + ";
}
labels += item.label;
}
return labels.empty() ? std::string("None") : labels;
}
} // namespace ControllerNames
+67
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@@ -0,0 +1,67 @@
#pragma once
// Per-port expression bindings for the GameCube controls, plus import of a
// Dolphin GCPadNew.ini.
#include <array>
#include <cstdint>
#include <string>
#include <dolphin/pad.h>
namespace InputBindings {
// The controls an expression can drive, in Dolphin's own naming so an
// imported config maps across without translation.
struct ControlInfo {
const char* dolphinName;
const char* label;
uint16_t padButton; // 0 for the analog-only controls below
int analog; // 0 none, 1 trigger L, 2 trigger R
};
inline constexpr std::array<ControlInfo, 14> kControls = {{
{"Buttons/A", "A", PAD_BUTTON_A, 0},
{"Buttons/B", "B", PAD_BUTTON_B, 0},
{"Buttons/X", "X", PAD_BUTTON_X, 0},
{"Buttons/Y", "Y", PAD_BUTTON_Y, 0},
{"Buttons/Z", "Z", PAD_TRIGGER_Z, 0},
{"Buttons/Start", "Start", PAD_BUTTON_START, 0},
{"D-Pad/Up", "D-pad Up", PAD_BUTTON_UP, 0},
{"D-Pad/Down", "D-pad Down", PAD_BUTTON_DOWN, 0},
{"D-Pad/Left", "D-pad Left", PAD_BUTTON_LEFT, 0},
{"D-Pad/Right", "D-pad Right", PAD_BUTTON_RIGHT, 0},
{"Triggers/L", "L", PAD_TRIGGER_L, 1},
{"Triggers/R", "R", PAD_TRIGGER_R, 2},
{"Triggers/L-Analog", "L analog", 0, 1},
{"Triggers/R-Analog", "R analog", 0, 2},
}};
void Reload() noexcept;
// The pad library has PADBlockInput but no matching query, so the settings
// overlay reports its own state here.
void SetInputBlocked(bool blocked) noexcept;
bool InputBlocked() noexcept;
// Mix expression output into a freshly read status set. Call once per guest
// PADRead, after every other input source has been merged.
void Apply(PADStatus* statuses) noexcept;
std::string GetExpression(uint32_t port, size_t control) noexcept;
// Returns false and fills error if the text does not parse; the binding is
// left unchanged in that case.
bool SetExpression(uint32_t port, size_t control, const std::string& text, std::string& error) noexcept;
// True while the control's expression is above the press threshold.
bool IsActive(uint32_t port, size_t control) noexcept;
// The default Dolphin config location on Windows, then next to the executable.
std::string DefaultDolphinConfigPath() noexcept;
// Imports [GCPad<padIndex>] into the given port. Returns the number of controls
// imported, or -1 on failure with error filled.
int ImportDolphinConfig(const std::string& path, int padIndex, uint32_t port,
std::string& summary, std::string& error) noexcept;
} // namespace InputBindings
+53
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@@ -0,0 +1,53 @@
#pragma once
// Dolphin-compatible input expressions.
//
// Values are doubles in Dolphin's ControlState style; a control counts as
// pressed above kConditionThreshold. Timing matches Dolphin: wall-clock
// seconds on a steady clock, so an expression copied from GCPadNew.ini
// behaves the same here as it does there.
#include <filesystem>
#include <functional>
#include <memory>
#include <string>
#include <vector>
namespace InputExpr {
inline constexpr double kConditionThreshold = 0.5;
// Resolves a backtick-quoted input name to its current value.
using InputSource = std::function<double(const std::string&)>;
struct Node;
class Expression {
public:
Expression();
~Expression();
Expression(Expression&&) noexcept;
Expression& operator=(Expression&&) noexcept;
// Returns false and fills error on a syntax problem.
static bool Parse(const std::string& text, Expression& out, std::string& error);
bool Empty() const { return m_root == nullptr; }
double Evaluate(const InputSource& source) const;
// Input names the expression references, for diagnostics.
std::vector<std::string> ReferencedInputs() const;
private:
std::unique_ptr<Node> m_root;
};
// Parses a Dolphin GCPadNew.ini and returns the expression text for each
// control of the requested pad, keyed by Dolphin's own control names
// ("Buttons/A", "D-Pad/Up", "Triggers/L", ...). Returns false if the file
// cannot be read or the section is missing.
bool ReadDolphinConfig(const std::filesystem::path& path, int padIndex,
std::vector<std::pair<std::string, std::string>>& controls,
std::string& deviceName, std::string& error);
} // namespace InputExpr
+33
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@@ -11,6 +11,7 @@
#include <iomanip>
#include <iostream>
#include <limits>
#include <map>
#include <optional>
#include <sstream>
#include <string>
@@ -89,6 +90,8 @@ struct RuntimeUserConfig {
// comma-separated SDL-style physical button names ("south", or
// "dpad_up,left_shoulder") as values; pressing either bound button counts.
std::array<std::optional<std::string>, 12> controllerButtons;
std::optional<bool> rumbleEnabled;
std::map<std::string, std::string> controllerExpressions;
};
namespace RuntimeConfigFile {
@@ -407,6 +410,17 @@ inline RuntimeUserConfig ParseConfigDocument(const toml::value& document) {
FindConfigValue<std::string>(document, "controller", buttonKeys[index]);
}
config.rumbleEnabled = FindConfigValue<bool>(document, "controller", "rumble");
if (const auto* section = document.contains("controller") ? &document.at("controller") : nullptr;
section != nullptr && section->is_table()) {
for (const auto& [key, value] : section->as_table()) {
if (key.rfind("expr_", 0) == 0 && value.is_string()) {
config.controllerExpressions[key] = value.as_string();
}
}
}
config.widescreen = FindConfigValue<bool>(document, "video", "widescreen");
config.windowPosX = FindConfigInt(document, "video", "window_x");
config.windowPosY = FindConfigInt(document, "video", "window_y");
@@ -677,6 +691,25 @@ inline bool SetControllerButton(size_t index, std::string value) {
return WriteSetting("controller", kControllerButtonKeys[index], FormatString(value));
}
inline std::string ControllerExpression(const std::string& key) {
const auto it = Get().controllerExpressions.find(key);
return it == Get().controllerExpressions.end() ? std::string() : it->second;
}
inline bool SetControllerExpression(const std::string& key, const std::string& value) {
Mutable().controllerExpressions[key] = value;
return WriteSetting("controller", key, FormatString(value));
}
inline bool RumbleEnabled(bool fallback = true) {
return Get().rumbleEnabled.value_or(fallback);
}
inline bool SetRumbleEnabled(bool value) {
Mutable().rumbleEnabled = value;
return WriteSetting("controller", "rumble", value ? "true" : "false");
}
inline bool SetAudioVolume(float value) {
value = std::clamp(value, 0.0f, 1.0f);
Mutable().audioVolume = value;
+68
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@@ -1,18 +1,75 @@
#include "hle_stubs.h"
#include "memory.h"
#include "hle/controller_status_contract.h"
#include "input_bindings.h"
#include "wii_remote_input.h"
#include <algorithm>
#include <atomic>
#include <cstdio>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <SDL3/SDL_gamepad.h>
#include <dolphin/pad.h>
namespace {
std::atomic<bool> g_rumbleEnabled{true};
bool NativeButtonHeld(SDL_Gamepad* gamepad, uint32_t nativeButton) {
if (gamepad == nullptr || nativeButton == PAD_NATIVE_BUTTON_INVALID ||
nativeButton >= SDL_GAMEPAD_BUTTON_COUNT) {
return false;
}
return SDL_GetGamepadButton(gamepad, static_cast<SDL_GamepadButton>(nativeButton));
}
// A digital button bound to L or R has no analog travel of its own. On real
// hardware the click only engages at full depression, so report a full pull.
void FillTriggersHeldByButtons(PADStatus* statuses) {
if (InputBindings::InputBlocked()) {
return;
}
for (uint32_t port = 0; port < PAD_CHANMAX; ++port) {
if (statuses[port].err != PAD_ERR_NONE) {
continue;
}
const s32 index = PADGetIndexForPort(port);
if (index < 0) {
continue;
}
SDL_Gamepad* gamepad = PADGetSDLGamepadForIndex(static_cast<u32>(index));
if (gamepad == nullptr) {
continue;
}
const auto scan = [&](PADButtonMapping* mappings, u32 count) {
if (mappings == nullptr) {
return;
}
for (u32 i = 0; i < count; ++i) {
const PADButtonMapping& mapping = mappings[i];
if (mapping.padButton != PAD_TRIGGER_L && mapping.padButton != PAD_TRIGGER_R) {
continue;
}
if (!NativeButtonHeld(gamepad, mapping.nativeButton)) {
continue;
}
if (mapping.padButton == PAD_TRIGGER_L) {
statuses[port].triggerLeft = 255;
} else {
statuses[port].triggerRight = 255;
}
}
};
u32 count = 0;
scan(PADGetButtonMappings(port, &count), count);
count = 0;
scan(PADGetAltButtonMappings(port, &count), count);
}
}
void WritePadStatus(uint32_t base, const PADStatus& status) {
const auto guestStatus = PadStatusContract::Encode({
status.button,
@@ -32,6 +89,11 @@ void WritePadStatus(uint32_t base, const PADStatus& status) {
} // namespace
extern "C" void PAD_HLE_SetRumbleEnabled(bool enabled)
{
g_rumbleEnabled.store(enabled, std::memory_order_relaxed);
}
extern "C" uint32_t PAD__Init_HLE()
{
return PADInit() ? 1u : 0u;
@@ -54,6 +116,9 @@ extern "C" uint32_t PAD__Read_HLE(uint32_t statusPtr)
// between "connected" and "no controller" every time the overlay toggles.
WiiRemoteInput::HideRemotesFromPad(statuses, PAD_CHANMAX);
FillTriggersHeldByButtons(statuses);
InputBindings::Apply(statuses);
try {
for (uint32_t i = 0; i < PAD_CHANMAX; ++i) {
WritePadStatus(statusPtr + static_cast<uint32_t>(i * PadStatusContract::kGuestStatusSize),
@@ -81,6 +146,9 @@ PPC_NATIVE_OVERRIDE(801AF1E4, PAD__Recalibrate_HLE, uint32_t, (uint32_t mask), (
extern "C" void PAD__ControlMotor_HLE(int32_t chan, uint32_t command)
{
if (command == PAD_MOTOR_RUMBLE && !g_rumbleEnabled.load(std::memory_order_relaxed)) {
command = PAD_MOTOR_STOP;
}
PADControlMotor(chan, command);
}
PPC_NATIVE_OVERRIDE_VOID(801AF908, PAD__ControlMotor_HLE, (int32_t chan, uint32_t command), (chan, command));
+302
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@@ -0,0 +1,302 @@
#include "input_bindings.h"
#include "controller_button_names.h"
#include "input_expr.h"
#include "runtime_config.h"
#include "runtime_log.h"
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <filesystem>
#include <mutex>
#include <unordered_map>
#include <SDL3/SDL_gamepad.h>
namespace InputBindings {
namespace {
struct Binding {
std::string text;
InputExpr::Expression expr;
bool active = false;
};
std::mutex g_mutex;
std::array<std::array<Binding, kControls.size()>, PAD_CHANMAX> g_bindings;
bool g_anyBound = false;
bool g_inputBlocked = false;
// Dolphin input names, mapped onto SDL. XInput-style names are exact; DInput
// "Button <n>" indices follow the common PlayStation layout, which is what
// DInput reports for a DualShock/DualSense. Other pads may number differently.
const std::unordered_map<std::string, SDL_GamepadButton>& ButtonNames() {
static const std::unordered_map<std::string, SDL_GamepadButton> table = {
{"Button A", SDL_GAMEPAD_BUTTON_SOUTH}, {"Button B", SDL_GAMEPAD_BUTTON_EAST},
{"Button X", SDL_GAMEPAD_BUTTON_WEST}, {"Button Y", SDL_GAMEPAD_BUTTON_NORTH},
{"Shoulder L", SDL_GAMEPAD_BUTTON_LEFT_SHOULDER},
{"Shoulder R", SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER},
{"Thumb L", SDL_GAMEPAD_BUTTON_LEFT_STICK}, {"Thumb R", SDL_GAMEPAD_BUTTON_RIGHT_STICK},
{"Start", SDL_GAMEPAD_BUTTON_START}, {"Back", SDL_GAMEPAD_BUTTON_BACK},
{"Guide", SDL_GAMEPAD_BUTTON_GUIDE},
{"Pad N", SDL_GAMEPAD_BUTTON_DPAD_UP}, {"Pad S", SDL_GAMEPAD_BUTTON_DPAD_DOWN},
{"Pad W", SDL_GAMEPAD_BUTTON_DPAD_LEFT}, {"Pad E", SDL_GAMEPAD_BUTTON_DPAD_RIGHT},
{"Hat 0 N", SDL_GAMEPAD_BUTTON_DPAD_UP}, {"Hat 0 S", SDL_GAMEPAD_BUTTON_DPAD_DOWN},
{"Hat 0 W", SDL_GAMEPAD_BUTTON_DPAD_LEFT}, {"Hat 0 E", SDL_GAMEPAD_BUTTON_DPAD_RIGHT},
{"Button 0", SDL_GAMEPAD_BUTTON_WEST}, {"Button 1", SDL_GAMEPAD_BUTTON_SOUTH},
{"Button 2", SDL_GAMEPAD_BUTTON_EAST}, {"Button 3", SDL_GAMEPAD_BUTTON_NORTH},
{"Button 4", SDL_GAMEPAD_BUTTON_LEFT_SHOULDER},
{"Button 5", SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER},
{"Button 8", SDL_GAMEPAD_BUTTON_BACK}, {"Button 9", SDL_GAMEPAD_BUTTON_START},
{"Button 10", SDL_GAMEPAD_BUTTON_LEFT_STICK},
{"Button 11", SDL_GAMEPAD_BUTTON_RIGHT_STICK},
{"Button 12", SDL_GAMEPAD_BUTTON_GUIDE}, {"Button 13", SDL_GAMEPAD_BUTTON_TOUCHPAD},
};
return table;
}
// Signed axis names: SDL axis plus the direction that counts as positive.
struct AxisRef {
SDL_GamepadAxis axis;
int sign;
};
const std::unordered_map<std::string, AxisRef>& AxisNames() {
static const std::unordered_map<std::string, AxisRef> table = {
{"Axis X-", {SDL_GAMEPAD_AXIS_LEFTX, -1}}, {"Axis X+", {SDL_GAMEPAD_AXIS_LEFTX, 1}},
{"Axis Y-", {SDL_GAMEPAD_AXIS_LEFTY, -1}}, {"Axis Y+", {SDL_GAMEPAD_AXIS_LEFTY, 1}},
{"Axis Z-", {SDL_GAMEPAD_AXIS_RIGHTX, -1}}, {"Axis Z+", {SDL_GAMEPAD_AXIS_RIGHTX, 1}},
{"Axis Zr-", {SDL_GAMEPAD_AXIS_RIGHTY, -1}},{"Axis Zr+", {SDL_GAMEPAD_AXIS_RIGHTY, 1}},
{"Left X-", {SDL_GAMEPAD_AXIS_LEFTX, -1}}, {"Left X+", {SDL_GAMEPAD_AXIS_LEFTX, 1}},
{"Left Y-", {SDL_GAMEPAD_AXIS_LEFTY, 1}}, {"Left Y+", {SDL_GAMEPAD_AXIS_LEFTY, -1}},
{"Right X-", {SDL_GAMEPAD_AXIS_RIGHTX, -1}},{"Right X+", {SDL_GAMEPAD_AXIS_RIGHTX, 1}},
{"Right Y-", {SDL_GAMEPAD_AXIS_RIGHTY, 1}}, {"Right Y+", {SDL_GAMEPAD_AXIS_RIGHTY, -1}},
{"Full Axis Xr+", {SDL_GAMEPAD_AXIS_LEFT_TRIGGER, 1}},
{"Full Axis Yr+", {SDL_GAMEPAD_AXIS_RIGHT_TRIGGER, 1}},
{"Trigger L", {SDL_GAMEPAD_AXIS_LEFT_TRIGGER, 1}},
{"Trigger R", {SDL_GAMEPAD_AXIS_RIGHT_TRIGGER, 1}},
};
return table;
}
double ReadInput(SDL_Gamepad* gamepad, const std::string& name) {
if (gamepad == nullptr) {
return 0.0;
}
if (const auto it = ButtonNames().find(name); it != ButtonNames().end()) {
return SDL_GetGamepadButton(gamepad, it->second) ? 1.0 : 0.0;
}
if (const auto it = AxisNames().find(name); it != AxisNames().end()) {
const double raw = SDL_GetGamepadAxis(gamepad, it->second.axis) / 32767.0;
return std::clamp(raw * it->second.sign, 0.0, 1.0);
}
// Fall back to this project's own positional names, so a binding written
// here does not have to use Dolphin vocabulary.
if (const auto* native = ControllerNames::FindNativeButton(name)) {
if (native->nativeButton != PAD_NATIVE_BUTTON_INVALID) {
return SDL_GetGamepadButton(gamepad, static_cast<SDL_GamepadButton>(native->nativeButton)) ? 1.0
: 0.0;
}
}
return 0.0;
}
SDL_Gamepad* GamepadForPort(uint32_t port) {
const s32 index = PADGetIndexForPort(port);
return index < 0 ? nullptr : PADGetSDLGamepadForIndex(static_cast<u32>(index));
}
size_t ControlIndexForDolphinName(const std::string& name) {
for (size_t i = 0; i < kControls.size(); ++i) {
if (name == kControls[i].dolphinName) {
return i;
}
}
return kControls.size();
}
void RecomputeAnyBoundLocked() {
g_anyBound = false;
for (const auto& port : g_bindings) {
for (const auto& binding : port) {
if (!binding.expr.Empty()) {
g_anyBound = true;
return;
}
}
}
}
std::string ConfigKey(uint32_t port, size_t control) {
std::string key = "expr_" + std::to_string(port + 1) + "_";
for (const char* c = kControls[control].dolphinName; *c != '\0'; ++c) {
key += (*c == '/' || *c == '-') ? '_' : static_cast<char>(std::tolower(*c));
}
return key;
}
} // namespace
void SetInputBlocked(bool blocked) noexcept {
std::lock_guard<std::mutex> lock(g_mutex);
g_inputBlocked = blocked;
}
bool InputBlocked() noexcept {
std::lock_guard<std::mutex> lock(g_mutex);
return g_inputBlocked;
}
void Reload() noexcept {
std::lock_guard<std::mutex> lock(g_mutex);
for (uint32_t port = 0; port < PAD_CHANMAX; ++port) {
for (size_t control = 0; control < kControls.size(); ++control) {
Binding& binding = g_bindings[port][control];
binding = Binding{};
binding.text = RuntimeConfigFile::ControllerExpression(ConfigKey(port, control));
std::string error;
if (!binding.text.empty() &&
!InputExpr::Expression::Parse(binding.text, binding.expr, error)) {
RT_LOG(RT_TAG_CONFIG) << "expression for port " << (port + 1) << " "
<< kControls[control].dolphinName << ": " << error << std::endl;
}
}
}
RecomputeAnyBoundLocked();
}
void Apply(PADStatus* statuses) noexcept {
if (statuses == nullptr) {
return;
}
std::lock_guard<std::mutex> lock(g_mutex);
if (!g_anyBound) {
return;
}
const bool blocked = g_inputBlocked;
for (uint32_t port = 0; port < PAD_CHANMAX; ++port) {
if (statuses[port].err != PAD_ERR_NONE) {
continue;
}
SDL_Gamepad* gamepad = GamepadForPort(port);
const InputExpr::InputSource source = [gamepad](const std::string& name) {
return ReadInput(gamepad, name);
};
for (size_t control = 0; control < kControls.size(); ++control) {
Binding& binding = g_bindings[port][control];
if (binding.expr.Empty()) {
continue;
}
if (blocked) {
binding.active = false;
continue;
}
const double value = binding.expr.Evaluate(source);
binding.active = value > InputExpr::kConditionThreshold;
const ControlInfo& info = kControls[control];
if (info.padButton != 0 && binding.active) {
statuses[port].button |= info.padButton;
}
if (info.analog != 0) {
const double safe = std::isfinite(value) ? std::clamp(value, 0.0, 1.0) : 0.0;
const auto scaled = static_cast<uint8_t>(safe * 255.0);
uint8_t& target =
info.analog == 1 ? statuses[port].triggerLeft : statuses[port].triggerRight;
target = std::max(target, scaled);
}
}
}
}
std::string GetExpression(uint32_t port, size_t control) noexcept {
if (port >= PAD_CHANMAX || control >= kControls.size()) {
return {};
}
std::lock_guard<std::mutex> lock(g_mutex);
return g_bindings[port][control].text;
}
bool SetExpression(uint32_t port, size_t control, const std::string& text, std::string& error) noexcept {
if (port >= PAD_CHANMAX || control >= kControls.size()) {
error = "invalid control";
return false;
}
InputExpr::Expression parsed;
if (!InputExpr::Expression::Parse(text, parsed, error)) {
return false;
}
{
std::lock_guard<std::mutex> lock(g_mutex);
Binding& binding = g_bindings[port][control];
binding.text = text;
binding.expr = std::move(parsed);
binding.active = false;
RecomputeAnyBoundLocked();
}
RuntimeConfigFile::SetControllerExpression(ConfigKey(port, control), text);
return true;
}
bool IsActive(uint32_t port, size_t control) noexcept {
if (port >= PAD_CHANMAX || control >= kControls.size()) {
return false;
}
std::lock_guard<std::mutex> lock(g_mutex);
return g_bindings[port][control].active;
}
std::string DefaultDolphinConfigPath() noexcept {
std::error_code ec;
if (const char* appdata = std::getenv("APPDATA"); appdata != nullptr) {
const std::filesystem::path roaming =
std::filesystem::path(appdata) / "Dolphin Emulator" / "Config" / "GCPadNew.ini";
if (std::filesystem::exists(roaming, ec)) {
return RuntimeConfigFile::PathToUtf8(roaming);
}
}
const auto executableDirectory = RuntimeConfigFile::ExecutableDirectory();
return RuntimeConfigFile::PathToUtf8(executableDirectory ? *executableDirectory / "GCPadNew.ini"
: std::filesystem::path("GCPadNew.ini"));
}
int ImportDolphinConfig(const std::string& path, int padIndex, uint32_t port, std::string& summary,
std::string& error) noexcept {
std::vector<std::pair<std::string, std::string>> controls;
std::string device;
if (!InputExpr::ReadDolphinConfig(RuntimeConfigFile::PathFromUtf8(path), padIndex, controls, device,
error)) {
return -1;
}
int imported = 0;
std::vector<std::string> skipped;
for (const auto& [name, text] : controls) {
const size_t control = ControlIndexForDolphinName(name);
if (control == kControls.size()) {
if (name.rfind("Main Stick/", 0) == 0 || name.rfind("C-Stick/", 0) == 0) {
skipped.push_back(name);
}
continue;
}
std::string parseError;
if (!SetExpression(port, control, text, parseError)) {
skipped.push_back(name);
RT_LOG(RT_TAG_CONFIG) << "import " << name << ": " << parseError << std::endl;
continue;
}
++imported;
}
summary = "Imported " + std::to_string(imported) + " controls";
if (!device.empty()) {
summary += " from " + device;
}
if (!skipped.empty()) {
summary += "; skipped " + std::to_string(skipped.size()) +
" (stick axes and unsupported inputs keep their existing mapping)";
}
return imported;
}
} // namespace InputBindings
+631
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@@ -0,0 +1,631 @@
#include "input_expr.h"
#include <algorithm>
#include <cctype>
#include <chrono>
#include <cmath>
#include <cstdlib>
#include <fstream>
#include <unordered_map>
namespace InputExpr {
namespace {
using Clock = std::chrono::steady_clock;
using FSec = std::chrono::duration<double>;
enum class Kind {
Literal, Input, Not, Add, Sub, Mul, Div, And, Or, Xor,
Greater, Less, Equal,
FnIf, FnMin, FnMax, FnClamp, FnAbs, FnSqrt, FnPow, FnSin, FnCos, FnTan,
FnDeadzone, FnTimer, FnToggle, FnHold, FnTap, FnPulse, FnSmooth, FnNot,
};
struct FnInfo {
Kind kind;
int minArgs;
int maxArgs;
};
const std::unordered_map<std::string, FnInfo>& FunctionTable() {
static const std::unordered_map<std::string, FnInfo> table = {
{"not", {Kind::FnNot, 1, 1}}, {"if", {Kind::FnIf, 3, 3}},
{"min", {Kind::FnMin, 2, 2}}, {"max", {Kind::FnMax, 2, 2}},
{"clamp", {Kind::FnClamp, 3, 3}}, {"abs", {Kind::FnAbs, 1, 1}},
{"sqrt", {Kind::FnSqrt, 1, 1}}, {"pow", {Kind::FnPow, 2, 2}},
{"sin", {Kind::FnSin, 1, 1}}, {"cos", {Kind::FnCos, 1, 1}},
{"tan", {Kind::FnTan, 1, 1}}, {"deadzone", {Kind::FnDeadzone, 2, 2}},
{"timer", {Kind::FnTimer, 1, 1}}, {"toggle", {Kind::FnToggle, 1, 2}},
{"hold", {Kind::FnHold, 2, 2}}, {"tap", {Kind::FnTap, 2, 3}},
{"pulse", {Kind::FnPulse, 2, 2}}, {"smooth", {Kind::FnSmooth, 2, 3}},
};
return table;
}
} // namespace
struct Node {
Kind kind;
double literal = 0.0;
std::string input;
std::vector<std::unique_ptr<Node>> args;
// Per-instance state for the stateful functions. Mutable because Evaluate
// is logically a read of current input state.
mutable bool released = false;
mutable bool state = false;
mutable unsigned taps = 0;
mutable double value = 0.0;
mutable Clock::time_point mark = Clock::now();
mutable bool marked = false;
};
namespace {
// ---- tokenizer ----------------------------------------------------------
struct Token {
enum Type { End, Input, Number, Ident, Op, LParen, RParen, Comma } type = End;
std::string text;
};
class Lexer {
public:
explicit Lexer(const std::string& text) : m_text(text) {}
bool Next(Token& tok, std::string& error) {
while (m_pos < m_text.size() && std::isspace(static_cast<unsigned char>(m_text[m_pos]))) {
++m_pos;
}
if (m_pos >= m_text.size()) {
tok = Token{};
return true;
}
const char c = m_text[m_pos];
if (c == '`') {
const size_t close = m_text.find('`', m_pos + 1);
if (close == std::string::npos) {
error = "unterminated ` in expression";
return false;
}
tok.type = Token::Input;
tok.text = m_text.substr(m_pos + 1, close - m_pos - 1);
m_pos = close + 1;
return true;
}
if (std::isdigit(static_cast<unsigned char>(c)) || c == '.') {
size_t end = m_pos;
while (end < m_text.size() &&
(std::isdigit(static_cast<unsigned char>(m_text[end])) || m_text[end] == '.')) {
++end;
}
tok.type = Token::Number;
tok.text = m_text.substr(m_pos, end - m_pos);
m_pos = end;
return true;
}
if (std::isalpha(static_cast<unsigned char>(c)) || c == '_') {
size_t end = m_pos;
while (end < m_text.size() &&
(std::isalnum(static_cast<unsigned char>(m_text[end])) || m_text[end] == '_' ||
m_text[end] == ' ')) {
++end;
}
// Trailing spaces belong to the separator, not the identifier.
while (end > m_pos && m_text[end - 1] == ' ') {
--end;
}
tok.type = Token::Ident;
tok.text = m_text.substr(m_pos, end - m_pos);
m_pos = end;
return true;
}
if (c == '(') { tok.type = Token::LParen; ++m_pos; return true; }
if (c == ')') { tok.type = Token::RParen; ++m_pos; return true; }
if (c == ',') { tok.type = Token::Comma; ++m_pos; return true; }
if (std::string("!&|^+-*/><=").find(c) != std::string::npos) {
tok.type = Token::Op;
tok.text = std::string(1, c);
++m_pos;
return true;
}
error = std::string("unexpected character '") + c + "' in expression";
return false;
}
size_t Position() const { return m_pos; }
private:
const std::string& m_text;
size_t m_pos = 0;
};
// ---- parser -------------------------------------------------------------
using NodePtr = std::unique_ptr<Node>;
class Parser {
public:
explicit Parser(const std::string& text) : m_lexer(text) { Advance(); }
NodePtr ParseExpression(std::string& error) {
NodePtr node = ParseBinary(0, error);
if (!node) {
return nullptr;
}
if (m_failed) {
error = m_lexError;
return nullptr;
}
if (m_tok.type != Token::End) {
error = "unexpected trailing input in expression";
return nullptr;
}
return node;
}
private:
void Advance() {
if (!m_lexer.Next(m_tok, m_lexError)) {
m_tok = Token{};
m_failed = true;
}
}
static int Precedence(const std::string& op) {
if (op == "|") return 1;
if (op == "^") return 2;
if (op == "&") return 3;
if (op == ">" || op == "<" || op == "=") return 4;
if (op == "+" || op == "-") return 5;
if (op == "*" || op == "/") return 6;
return -1;
}
static Kind BinaryKind(const std::string& op) {
if (op == "|") return Kind::Or;
if (op == "^") return Kind::Xor;
if (op == "&") return Kind::And;
if (op == ">") return Kind::Greater;
if (op == "<") return Kind::Less;
if (op == "=") return Kind::Equal;
if (op == "+") return Kind::Add;
if (op == "-") return Kind::Sub;
if (op == "*") return Kind::Mul;
return Kind::Div;
}
NodePtr ParseBinary(int minPrec, std::string& error) {
NodePtr lhs = ParseUnary(error);
if (!lhs) {
return nullptr;
}
while (m_tok.type == Token::Op) {
const int prec = Precedence(m_tok.text);
if (prec < 0 || prec < minPrec) {
break;
}
const std::string op = m_tok.text;
Advance();
NodePtr rhs = ParseBinary(prec + 1, error);
if (!rhs) {
return nullptr;
}
auto node = std::make_unique<Node>();
node->kind = BinaryKind(op);
node->args.push_back(std::move(lhs));
node->args.push_back(std::move(rhs));
lhs = std::move(node);
}
return lhs;
}
NodePtr ParseUnary(std::string& error) {
if (m_failed) {
error = m_lexError;
return nullptr;
}
if (m_tok.type == Token::Op && (m_tok.text == "!" || m_tok.text == "-" || m_tok.text == "+")) {
const std::string op = m_tok.text;
Advance();
NodePtr inner = ParseUnary(error);
if (!inner) {
return nullptr;
}
if (op == "+") {
return inner;
}
auto node = std::make_unique<Node>();
if (op == "!") {
node->kind = Kind::Not;
node->args.push_back(std::move(inner));
} else {
node->kind = Kind::Sub;
auto zero = std::make_unique<Node>();
zero->kind = Kind::Literal;
node->args.push_back(std::move(zero));
node->args.push_back(std::move(inner));
}
return node;
}
return ParsePrimary(error);
}
NodePtr ParsePrimary(std::string& error) {
if (m_failed) {
error = m_lexError;
return nullptr;
}
switch (m_tok.type) {
case Token::Input: {
auto node = std::make_unique<Node>();
node->kind = Kind::Input;
node->input = m_tok.text;
Advance();
return node;
}
case Token::Number: {
auto node = std::make_unique<Node>();
node->kind = Kind::Literal;
node->literal = std::strtod(m_tok.text.c_str(), nullptr);
Advance();
return node;
}
case Token::LParen: {
Advance();
NodePtr inner = ParseBinary(0, error);
if (!inner) {
return nullptr;
}
if (m_tok.type != Token::RParen) {
error = "expected closing paren";
return nullptr;
}
Advance();
return inner;
}
case Token::Ident: {
const std::string name = m_tok.text;
Advance();
if (m_tok.type != Token::LParen) {
// A bare identifier is an input name, as Dolphin allows for
// simple cases such as "Start" or "LSHIFT".
auto node = std::make_unique<Node>();
node->kind = Kind::Input;
node->input = name;
return node;
}
const auto it = FunctionTable().find(name);
if (it == FunctionTable().end()) {
error = "unknown function '" + name + "'";
return nullptr;
}
Advance();
auto node = std::make_unique<Node>();
node->kind = it->second.kind;
if (m_tok.type != Token::RParen) {
while (true) {
NodePtr arg = ParseBinary(0, error);
if (!arg) {
return nullptr;
}
node->args.push_back(std::move(arg));
if (m_tok.type != Token::Comma) {
break;
}
Advance();
}
}
if (m_tok.type != Token::RParen) {
error = "expected closing paren after " + name + " arguments";
return nullptr;
}
Advance();
const int count = static_cast<int>(node->args.size());
if (count < it->second.minArgs || count > it->second.maxArgs) {
error = name + " takes " + std::to_string(it->second.minArgs) + " to " +
std::to_string(it->second.maxArgs) + " arguments";
return nullptr;
}
return node;
}
default:
error = "expected start of expression";
return nullptr;
}
}
Lexer m_lexer;
Token m_tok;
std::string m_lexError;
bool m_failed = false;
};
// ---- evaluator ----------------------------------------------------------
double Eval(const Node& node, const InputSource& source);
double Arg(const Node& node, size_t index, const InputSource& source) {
return Eval(*node.args[index], source);
}
double Eval(const Node& node, const InputSource& source) {
switch (node.kind) {
case Kind::Literal: return node.literal;
case Kind::Input: return source ? source(node.input) : 0.0;
case Kind::Not:
case Kind::FnNot: return 1.0 - Arg(node, 0, source);
case Kind::Add: return Arg(node, 0, source) + Arg(node, 1, source);
case Kind::Sub: return Arg(node, 0, source) - Arg(node, 1, source);
case Kind::Mul: return Arg(node, 0, source) * Arg(node, 1, source);
case Kind::Div: {
// Both sides are evaluated even when the divisor is zero: the left
// subtree may hold stateful functions that need their frame update.
const double lhs = Arg(node, 0, source);
const double rhs = Arg(node, 1, source);
return rhs == 0.0 ? 0.0 : lhs / rhs;
}
case Kind::And: return std::min(Arg(node, 0, source), Arg(node, 1, source));
case Kind::Or: return std::max(Arg(node, 0, source), Arg(node, 1, source));
case Kind::Xor: {
const double a = Arg(node, 0, source);
const double b = Arg(node, 1, source);
return std::max(std::min(a, 1.0 - b), std::min(b, 1.0 - a));
}
case Kind::Greater: return Arg(node, 0, source) > Arg(node, 1, source) ? 1.0 : 0.0;
case Kind::Less: return Arg(node, 0, source) < Arg(node, 1, source) ? 1.0 : 0.0;
case Kind::Equal: return Arg(node, 0, source) == Arg(node, 1, source) ? 1.0 : 0.0;
case Kind::FnIf:
return Arg(node, 0, source) > kConditionThreshold ? Arg(node, 1, source) : Arg(node, 2, source);
case Kind::FnMin: return std::min(Arg(node, 0, source), Arg(node, 1, source));
case Kind::FnMax: return std::max(Arg(node, 0, source), Arg(node, 1, source));
case Kind::FnClamp: {
const double v = Arg(node, 0, source);
double lo = Arg(node, 1, source);
double hi = Arg(node, 2, source);
if (lo > hi) {
std::swap(lo, hi);
}
return std::clamp(v, lo, hi);
}
case Kind::FnAbs: return std::abs(Arg(node, 0, source));
case Kind::FnSqrt: return std::sqrt(Arg(node, 0, source));
case Kind::FnPow: return std::pow(Arg(node, 0, source), Arg(node, 1, source));
case Kind::FnSin: return std::sin(Arg(node, 0, source));
case Kind::FnCos: return std::cos(Arg(node, 0, source));
case Kind::FnTan: return std::tan(Arg(node, 0, source));
case Kind::FnDeadzone: {
const double v = Arg(node, 0, source);
const double dz = std::clamp(Arg(node, 1, source), 0.0, 0.999);
return std::copysign(std::max(0.0, std::abs(v) - dz) / (1.0 - dz), v);
}
case Kind::FnTimer: {
const auto now = Clock::now();
if (!node.marked) {
node.mark = now;
node.marked = true;
}
const double period = Arg(node, 0, source);
double progress = std::chrono::duration_cast<FSec>(now - node.mark).count() / period;
if (!std::isfinite(progress) || progress < 0.0) {
progress = 0.0;
node.mark = now;
} else if (progress >= 1.0) {
const double resets = std::floor(progress);
node.mark += std::chrono::duration_cast<Clock::duration>(FSec(period * resets));
progress -= resets;
}
return progress;
}
case Kind::FnToggle: {
const double inner = Arg(node, 0, source);
if (inner < kConditionThreshold) {
node.released = true;
} else if (node.released) {
node.released = false;
node.state = !node.state;
}
if (node.args.size() == 2 && Arg(node, 1, source) > kConditionThreshold) {
node.state = false;
}
return node.state ? 1.0 : 0.0;
}
case Kind::FnHold: {
const auto now = Clock::now();
if (!node.marked) {
node.mark = now;
node.marked = true;
}
const double input = Arg(node, 0, source);
if (input < kConditionThreshold) {
node.state = false;
node.mark = now;
} else if (!node.state) {
if (std::chrono::duration_cast<FSec>(now - node.mark).count() >= Arg(node, 1, source)) {
node.state = true;
}
}
return node.state ? 1.0 : 0.0;
}
case Kind::FnTap: {
const auto now = Clock::now();
if (!node.marked) {
node.mark = now;
node.marked = true;
}
const double elapsed = std::chrono::duration_cast<FSec>(now - node.mark).count();
const double input = Arg(node, 0, source);
const bool timeUp = elapsed > Arg(node, 1, source);
// The count is user authored, so a negative or huge value must not
// reach the unsigned conversion.
double requested = node.args.size() == 3 ? Arg(node, 2, source) : 2.0;
if (!std::isfinite(requested)) {
requested = 2.0;
}
const auto desired = static_cast<unsigned>(std::clamp(requested + 0.5, 1.0, 64.0));
if (input < kConditionThreshold) {
node.released = true;
if (node.taps > 0 && timeUp) {
node.taps = 0;
}
return 0.0;
}
if (node.released) {
if (node.taps == 0) {
node.mark = now;
}
++node.taps;
node.released = false;
}
return desired == node.taps ? 1.0 : 0.0;
}
case Kind::FnPulse: {
const auto now = Clock::now();
const double input = Arg(node, 0, source);
if (input < kConditionThreshold) {
node.released = true;
} else if (node.released) {
node.released = false;
const double requested = Arg(node, 1, source);
const double safe = std::isfinite(requested) ? std::clamp(requested, 0.0, 3600.0) : 0.0;
const auto seconds = std::chrono::duration_cast<Clock::duration>(FSec(safe));
if (node.state) {
node.mark += seconds;
} else {
node.state = true;
node.mark = now + seconds;
}
}
if (node.state && now >= node.mark) {
node.state = false;
}
return node.state ? 1.0 : 0.0;
}
case Kind::FnSmooth: {
const auto now = Clock::now();
if (!node.marked) {
node.mark = now;
node.marked = true;
}
const double elapsed = std::chrono::duration_cast<FSec>(now - node.mark).count();
node.mark = now;
const double desired = Arg(node, 0, source);
const double up = Arg(node, 1, source);
const double down = node.args.size() == 3 ? Arg(node, 2, source) : up;
const double rate = (desired < node.value) ? down : up;
const double maxMove = elapsed / rate;
if (!std::isfinite(maxMove)) {
node.value = desired;
} else {
const double diff = desired - node.value;
node.value += std::copysign(std::min(maxMove, std::abs(diff)), diff);
}
return node.value;
}
}
return 0.0;
}
void Collect(const Node& node, std::vector<std::string>& out) {
if (node.kind == Kind::Input) {
if (std::find(out.begin(), out.end(), node.input) == out.end()) {
out.push_back(node.input);
}
}
for (const auto& arg : node.args) {
Collect(*arg, out);
}
}
std::string Trim(const std::string& text) {
const size_t begin = text.find_first_not_of(" \t\r\n");
if (begin == std::string::npos) {
return {};
}
return text.substr(begin, text.find_last_not_of(" \t\r\n") - begin + 1);
}
} // namespace
Expression::Expression() = default;
Expression::~Expression() = default;
Expression::Expression(Expression&&) noexcept = default;
Expression& Expression::operator=(Expression&&) noexcept = default;
bool Expression::Parse(const std::string& text, Expression& out, std::string& error) {
out.m_root.reset();
if (Trim(text).empty()) {
return true;
}
Parser parser(text);
NodePtr root = parser.ParseExpression(error);
if (!root) {
return false;
}
out.m_root = std::move(root);
return true;
}
double Expression::Evaluate(const InputSource& source) const {
if (m_root == nullptr) {
return 0.0;
}
const double value = Eval(*m_root, source);
return std::isfinite(value) ? value : 0.0;
}
std::vector<std::string> Expression::ReferencedInputs() const {
std::vector<std::string> out;
if (m_root) {
Collect(*m_root, out);
}
return out;
}
bool ReadDolphinConfig(const std::filesystem::path& path, int padIndex,
std::vector<std::pair<std::string, std::string>>& controls,
std::string& deviceName, std::string& error) {
std::ifstream file(path);
if (!file) {
error = "could not open " + path.string();
return false;
}
const std::string wanted = "[GCPad" + std::to_string(padIndex) + "]";
bool inSection = false;
bool found = false;
std::string line;
controls.clear();
deviceName.clear();
while (std::getline(file, line)) {
const std::string trimmed = Trim(line);
if (trimmed.empty() || trimmed[0] == '#' || trimmed[0] == ';') {
continue;
}
if (trimmed.front() == '[') {
inSection = trimmed == wanted;
found = found || inSection;
continue;
}
if (!inSection) {
continue;
}
const size_t eq = trimmed.find('=');
if (eq == std::string::npos) {
continue;
}
const std::string key = Trim(trimmed.substr(0, eq));
const std::string value = Trim(trimmed.substr(eq + 1));
if (key == "Device") {
deviceName = value;
} else if (!value.empty()) {
controls.emplace_back(key, value);
}
}
if (!found) {
error = wanted + " not found in " + path.string();
return false;
}
return true;
}
} // namespace InputExpr
+139 -86
View File
@@ -1,6 +1,8 @@
#include "settings_overlay.h"
#include "audio_backend.h"
#include "controller_button_names.h"
#include "controller_mapping_wizard.h"
#include "input_bindings.h"
#include "game_graphics_options.h"
#include "music_attenuation.h"
#include "runtime_config.h"
@@ -34,6 +36,8 @@
#endif
#include <dolphin/pad.h>
extern "C" void PAD_HLE_SetRumbleEnabled(bool enabled);
#include <dolphin/vi.h>
#include <aurora/aurora.h>
#include <aurora/gfx.h>
@@ -65,6 +69,7 @@ const char* GraphicsApiDisplayName() {
}
bool g_topBarVisible = false;
bool g_rumbleEnabled = RuntimeConfigFile::RumbleEnabled(true);
int g_controllerPort = 0;
float g_resolutionScale = RuntimeConfigFile::ResolutionMultiplier(1.0f);
int g_audioVolumePercent = static_cast<int>(std::lround(RuntimeConfigFile::AudioVolume(1.0f) * 100.0f));
@@ -106,62 +111,9 @@ std::array<int32_t, PAD_MAX_CONTROLLERS> g_configuredControllerIndices = [] {
return indices;
}();
struct ControllerButtonItem {
const char* configKey;
const char* label;
PADButton padButton;
};
constexpr std::array<ControllerButtonItem, PAD_BUTTON_COUNT> kControllerButtons = {{
{"a", "A", PAD_BUTTON_A},
{"b", "B", PAD_BUTTON_B},
{"x", "X", PAD_BUTTON_X},
{"y", "Y", PAD_BUTTON_Y},
{"start", "Start", PAD_BUTTON_START},
{"z", "Z", PAD_TRIGGER_Z},
{"l", "L", PAD_TRIGGER_L},
{"r", "R", PAD_TRIGGER_R},
{"up", "D-pad Up", PAD_BUTTON_UP},
{"down", "D-pad Down", PAD_BUTTON_DOWN},
{"left", "D-pad Left", PAD_BUTTON_LEFT},
{"right", "D-pad Right", PAD_BUTTON_RIGHT},
}};
struct NativeButtonItem {
const char* configName;
const char* label;
uint32_t nativeButton;
};
constexpr std::array<NativeButtonItem, SDL_GAMEPAD_BUTTON_COUNT + 1> kNativeButtons = {{
{"unmapped", "Unmapped / analog trigger", PAD_NATIVE_BUTTON_INVALID},
{"south", "South (A / Cross)", SDL_GAMEPAD_BUTTON_SOUTH},
{"east", "East (B / Circle)", SDL_GAMEPAD_BUTTON_EAST},
{"west", "West (X / Square)", SDL_GAMEPAD_BUTTON_WEST},
{"north", "North (Y / Triangle)", SDL_GAMEPAD_BUTTON_NORTH},
{"back", "Back / Select", SDL_GAMEPAD_BUTTON_BACK},
{"guide", "Guide / Home", SDL_GAMEPAD_BUTTON_GUIDE},
{"start", "Start / Options", SDL_GAMEPAD_BUTTON_START},
{"left_stick", "Left stick click", SDL_GAMEPAD_BUTTON_LEFT_STICK},
{"right_stick", "Right stick click", SDL_GAMEPAD_BUTTON_RIGHT_STICK},
{"left_shoulder", "Left shoulder", SDL_GAMEPAD_BUTTON_LEFT_SHOULDER},
{"right_shoulder", "Right shoulder", SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER},
{"dpad_up", "D-pad Up", SDL_GAMEPAD_BUTTON_DPAD_UP},
{"dpad_down", "D-pad Down", SDL_GAMEPAD_BUTTON_DPAD_DOWN},
{"dpad_left", "D-pad Left", SDL_GAMEPAD_BUTTON_DPAD_LEFT},
{"dpad_right", "D-pad Right", SDL_GAMEPAD_BUTTON_DPAD_RIGHT},
{"misc1", "Misc 1 / Share", SDL_GAMEPAD_BUTTON_MISC1},
{"right_paddle1", "Right paddle 1", SDL_GAMEPAD_BUTTON_RIGHT_PADDLE1},
{"left_paddle1", "Left paddle 1", SDL_GAMEPAD_BUTTON_LEFT_PADDLE1},
{"right_paddle2", "Right paddle 2", SDL_GAMEPAD_BUTTON_RIGHT_PADDLE2},
{"left_paddle2", "Left paddle 2", SDL_GAMEPAD_BUTTON_LEFT_PADDLE2},
{"touchpad", "Touchpad", SDL_GAMEPAD_BUTTON_TOUCHPAD},
{"misc2", "Misc 2", SDL_GAMEPAD_BUTTON_MISC2},
{"misc3", "Misc 3 / GC L click", SDL_GAMEPAD_BUTTON_MISC3},
{"misc4", "Misc 4 / GC R click", SDL_GAMEPAD_BUTTON_MISC4},
{"misc5", "Misc 5", SDL_GAMEPAD_BUTTON_MISC5},
{"misc6", "Misc 6", SDL_GAMEPAD_BUTTON_MISC6},
}};
using ControllerNames::kNativeButtons;
using ControllerNames::NativeButtonItem;
constexpr const auto& kControllerButtons = ControllerNames::kGameCubeButtons;
// Classic Controller Pro layout, indexed like kControllerButtons: the SNES-style
// diamond (A right, B bottom, X top, Y left) with digital bumpers driving the GC
@@ -178,6 +130,13 @@ constexpr std::array<const char*, PAD_BUTTON_COUNT> kClassicProPreset = {
"dpad_up", "dpad_down", "dpad_left", "dpad_right",
};
// PlayStation layout: bumpers drive the GC triggers, Z moves to Create/Share.
constexpr std::array<const char*, PAD_BUTTON_COUNT> kPlayStationPreset = {
"south", "east", "west", "north", "start", "back",
"left_shoulder", "right_shoulder",
"dpad_up", "dpad_down", "dpad_left", "dpad_right",
};
struct ResolutionItem {
const char* label;
float scale;
@@ -225,43 +184,25 @@ void LimitResolutionForFrameRate() {
}
}
const NativeButtonItem* FindNativeButton(std::string value) {
const auto it = std::find_if(kNativeButtons.begin(), kNativeButtons.end(), [&](const NativeButtonItem& item) {
return value == item.configName;
});
return it == kNativeButtons.end() ? nullptr : &*it;
}
using ControllerNames::FindNativeButton;
struct ControllerBindingPair {
std::string primary;
std::string secondary;
};
std::string TrimBindingToken(const std::string& token) {
const size_t begin = token.find_first_not_of(" \t");
if (begin == std::string::npos) {
return {};
}
const size_t end = token.find_last_not_of(" \t");
return token.substr(begin, end - begin + 1);
}
// Config values hold up to two comma-separated button names ("dpad_up" or
// "dpad_up,left_shoulder"); pressing either one counts as the GC button.
ControllerBindingPair SplitControllerBinding(const std::string& value) {
const size_t comma = value.find(',');
if (comma == std::string::npos) {
return {TrimBindingToken(value), {}};
return {ControllerNames::TrimToken(value), {}};
}
return {TrimBindingToken(value.substr(0, comma)), TrimBindingToken(value.substr(comma + 1))};
return {ControllerNames::TrimToken(value.substr(0, comma)), ControllerNames::TrimToken(value.substr(comma + 1))};
}
const NativeButtonItem& NativeButtonForValue(uint32_t nativeButton) {
const auto it = std::find_if(kNativeButtons.begin(), kNativeButtons.end(), [&](const NativeButtonItem& item) {
return nativeButton == item.nativeButton;
});
return it == kNativeButtons.end() ? kNativeButtons.front() : *it;
}
using ControllerNames::NativeButtonForValue;
void SetTopBarVisible(bool visible) {
if (g_topBarVisible == visible) {
@@ -393,10 +334,8 @@ void DrawWiiRemoteSettings(uint32_t selectedGamePort) {
}
ImGui::EndDisabled();
ImGui::SameLine();
if (WiiRemoteInput::IsScanning() && WiiRemoteInput::PeriodicRescanEnabled()) {
if (WiiRemoteInput::IsScanning()) {
ImGui::TextDisabled("Scanning... (%u so far) - press 1+2 on the remote", WiiRemoteInput::ScanCount());
} else if (WiiRemoteInput::IsScanning()) {
ImGui::TextDisabled("Waiting for a remote - press 1+2 on the remote");
} else {
ImGui::TextDisabled("Not scanning");
}
@@ -457,6 +396,105 @@ void DrawWiiRemoteSettings(uint32_t selectedGamePort) {
}
// Controller settings menu: port selection, controller assignment and button mapping.
int ExpressionResizeCallback(ImGuiInputTextCallbackData* data) {
if (data->EventFlag == ImGuiInputTextFlags_CallbackResize) {
auto* text = static_cast<std::string*>(data->UserData);
text->resize(static_cast<size_t>(data->BufTextLen));
data->Buf = text->data();
}
return 0;
}
void DrawExpressionSettings() {
ImGui::SeparatorText("Expressions (Dolphin syntax)");
ImGui::PushTextWrapPos(ImGui::GetCursorPosX() + 440.0f);
ImGui::TextDisabled(
"Optional. An expression overrides nothing: its result is combined with the "
"button mapping above. Operators ! & | ^ and functions if, min, max, clamp, "
"timer, toggle, hold, tap, pulse, smooth, deadzone behave as they do in Dolphin.");
ImGui::PopTextWrapPos();
static std::array<std::string, InputBindings::kControls.size()> errors;
static std::array<std::string, InputBindings::kControls.size()> buffers;
static std::string importStatus;
static int loadedPort = -1;
static bool reloadBuffers = true;
const auto port = static_cast<uint32_t>(g_controllerPort);
if (loadedPort != g_controllerPort || reloadBuffers) {
for (size_t i = 0; i < buffers.size(); ++i) {
buffers[i] = InputBindings::GetExpression(port, i);
}
errors.fill(std::string());
loadedPort = g_controllerPort;
reloadBuffers = false;
}
if (ImGui::Button("Import from Dolphin")) {
const std::string path = InputBindings::DefaultDolphinConfigPath();
std::string summary;
std::string error;
if (InputBindings::ImportDolphinConfig(path, g_controllerPort + 1, port, summary, error) < 0) {
importStatus = error;
} else {
importStatus = summary;
errors.fill(std::string());
reloadBuffers = true;
}
}
if (ImGui::IsItemHovered()) {
ImGui::SetTooltip("Reads [GCPad%d] from %%APPDATA%%\\Dolphin Emulator\\Config\\GCPadNew.ini,\n"
"or GCPadNew.ini next to the executable.", g_controllerPort + 1);
}
if (!importStatus.empty()) {
ImGui::TextDisabled("%s", importStatus.c_str());
}
for (size_t i = 0; i < InputBindings::kControls.size(); ++i) {
ImGui::PushID(static_cast<int>(i) + 2000);
std::string& text = buffers[i];
ImGui::SetNextItemWidth(300.0f);
if (ImGui::InputText(InputBindings::kControls[i].label, text.data(), text.capacity() + 1,
ImGuiInputTextFlags_EnterReturnsTrue | ImGuiInputTextFlags_CallbackResize,
ExpressionResizeCallback, &text)) {
std::string error;
errors[i] = InputBindings::SetExpression(port, i, text, error) ? std::string() : error;
}
if (InputBindings::IsActive(port, i)) {
ImGui::SameLine();
ImGui::TextColored(ImVec4(0.4f, 0.9f, 0.4f, 1.0f), "active");
}
if (!errors[i].empty()) {
ImGui::TextColored(ImVec4(1.0f, 0.65f, 0.3f, 1.0f), "%s", errors[i].c_str());
}
ImGui::PopID();
}
}
void DrawRumbleSettings() {
ImGui::SeparatorText("Vibration");
if (ImGui::Checkbox("Controller vibration", &g_rumbleEnabled)) {
PAD_HLE_SetRumbleEnabled(g_rumbleEnabled);
RuntimeConfigFile::SetRumbleEnabled(g_rumbleEnabled);
if (!g_rumbleEnabled) {
// Stop whatever is already running: the game will not send another
// motor command until its own state machine decides to.
constexpr std::array<uint32_t, PAD_MAX_CONTROLLERS> stopAll{
PAD_MOTOR_STOP_HARD, PAD_MOTOR_STOP_HARD, PAD_MOTOR_STOP_HARD, PAD_MOTOR_STOP_HARD,
};
PADControlAllMotors(stopAll.data());
#if defined(_WIN32)
for (uint32_t port = 0; port < PAD_MAX_CONTROLLERS; ++port) {
Wup028Adapter::SetRumble(port, false);
}
#endif
}
}
if (ImGui::IsItemHovered()) {
ImGui::SetTooltip("Applies to every port.");
}
}
void DrawControllerSettings() {
for (int port = 0; port < PAD_MAX_CONTROLLERS; ++port) {
const std::string label = "Port " + std::to_string(port + 1);
@@ -545,20 +583,28 @@ void DrawControllerSettings() {
PADSerializeMappings();
mappings = PADGetButtonMappings(port, &mappingCount);
}
ImGui::SameLine();
if (ImGui::Button("Classic Controller Pro")) {
const auto applyPreset = [&](const std::array<const char*, PAD_BUTTON_COUNT>& preset) {
const uint32_t port = static_cast<uint32_t>(g_controllerPort);
for (size_t i = 0; i < kControllerButtons.size(); ++i) {
if (const NativeButtonItem* native = FindNativeButton(kClassicProPreset[i])) {
if (const NativeButtonItem* native = FindNativeButton(preset[i])) {
PADSetButtonMapping(port, PADButtonMapping{native->nativeButton, kControllerButtons[i].padButton});
PADSetAltButtonMapping(port,
PADButtonMapping{PAD_NATIVE_BUTTON_INVALID, kControllerButtons[i].padButton});
RuntimeConfigFile::SetControllerButton(i, kClassicProPreset[i]);
RuntimeConfigFile::SetControllerButton(i, preset[i]);
}
}
altRowExpanded.fill(false);
PADSerializeMappings();
mappings = PADGetButtonMappings(port, &mappingCount);
};
ImGui::SameLine();
if (ImGui::Button("Classic Controller Pro")) {
applyPreset(kClassicProPreset);
}
ImGui::SameLine();
if (ImGui::Button("PlayStation")) {
applyPreset(kPlayStationPreset);
}
ImGui::SeparatorText("Button mapping");
@@ -640,6 +686,8 @@ void DrawControllerSettings() {
ImGui::TextUnformatted(kControllerButtons[i].label);
ImGui::PopID();
}
DrawExpressionSettings();
DrawRumbleSettings();
}
void DrawAudioSettings() {
@@ -994,6 +1042,8 @@ void PersistDisplayModeIfChanged() {
} // namespace
void InitializeRuntimeSettings() noexcept {
PAD_HLE_SetRumbleEnabled(g_rumbleEnabled);
InputBindings::Reload();
controller_mapping_wizard::LoadPersistedMappings();
ApplyConfiguredMappings();
AudioBackend::Instance().SetMasterVolume(static_cast<float>(g_audioVolumePercent) / 100.0f);
@@ -1014,6 +1064,7 @@ void InitializeRuntimeSettings() noexcept {
g_strapInputAccepted.store(false, std::memory_order_relaxed);
g_startupDismissFrame.store(UINT64_MAX, std::memory_order_relaxed);
PADBlockInput(false);
InputBindings::SetInputBlocked(false);
}
void HandleEvents(const AuroraEvent* events) noexcept {
@@ -1056,7 +1107,9 @@ void Draw() noexcept {
DrawTopBar();
controller_mapping_wizard::Draw();
// The wizard captures raw presses; keep them out of the game.
PADBlockInput(controller_mapping_wizard::IsActive());
const bool inputBlocked = controller_mapping_wizard::IsActive();
PADBlockInput(inputBlocked);
InputBindings::SetInputBlocked(inputBlocked);
DrawStartupScreen();
}
+219
View File
@@ -0,0 +1,219 @@
// Verifies the expression engine against Dolphin's documented semantics,
// including the exact line from the user's GCPadNew.ini.
#include "input_expr.h"
#include <chrono>
#include <cmath>
#include <cstdio>
#include <map>
#include <string>
#include <thread>
static int g_failures = 0;
static std::map<std::string, double> g_inputs;
static InputExpr::InputSource Source() {
return [](const std::string& name) {
const auto it = g_inputs.find(name);
return it == g_inputs.end() ? 0.0 : it->second;
};
}
static void Check(bool ok, const std::string& what) {
if (!ok) {
std::printf(" FAIL: %s\n", what.c_str());
++g_failures;
}
}
static InputExpr::Expression Compile(const std::string& text) {
InputExpr::Expression expr;
std::string error;
if (!InputExpr::Expression::Parse(text, expr, error)) {
std::printf(" FAIL: parse '%s': %s\n", text.c_str(), error.c_str());
++g_failures;
}
return expr;
}
static bool Pressed(const InputExpr::Expression& e) {
return e.Evaluate(Source()) > InputExpr::kConditionThreshold;
}
static void Sleep(int ms) { std::this_thread::sleep_for(std::chrono::milliseconds(ms)); }
int main() {
std::printf("Dolphin expression engine\n");
// Operators: & is min, | is max, ! is 1-x, matching Dolphin.
g_inputs["A"] = 1.0;
g_inputs["B"] = 0.0;
Check(Pressed(Compile("`A`")), "bare input");
Check(!Pressed(Compile("!`A`")), "not");
Check(!Pressed(Compile("`A` & `B`")), "and is min");
Check(Pressed(Compile("`A` | `B`")), "or is max");
Check(Pressed(Compile("`A` ^ `B`")), "xor");
Check(!Pressed(Compile("`A` ^ `A`")), "xor of equal inputs is false");
// Precedence: & binds tighter than |, so this is A | (B & A).
g_inputs["B"] = 0.0;
Check(Pressed(Compile("`A` | `B` & `A`")), "& binds tighter than |");
// Parens and numeric literals.
Check(Pressed(Compile("(`B` | 1)")), "literal");
Check(Pressed(Compile("min(1, `A`)")), "min");
Check(!Pressed(Compile("min(0, `A`)")), "min with zero");
Check(Pressed(Compile("if(`A`, 1, 0)")), "if");
Check(Pressed(Compile("clamp(5, 0, 1)")), "clamp");
// toggle flips on each rising edge and holds between them.
auto toggle = Compile("toggle(`T`)");
g_inputs["T"] = 0.0;
toggle.Evaluate(Source());
g_inputs["T"] = 1.0;
Check(Pressed(toggle), "toggle on after first press");
g_inputs["T"] = 0.0;
Check(Pressed(toggle), "toggle stays on after release");
g_inputs["T"] = 1.0;
Check(!Pressed(toggle), "toggle off on second press");
// hold requires the input to be down for the full duration.
auto hold = Compile("hold(`H`, 0.05)");
g_inputs["H"] = 1.0;
Check(!Pressed(hold), "hold not satisfied immediately");
Sleep(70);
Check(Pressed(hold), "hold satisfied after the interval");
g_inputs["H"] = 0.0;
Check(!Pressed(hold), "hold clears on release");
// pulse fires for the given duration after a rising edge.
auto pulse = Compile("pulse(`P`, 0.05)");
g_inputs["P"] = 0.0;
pulse.Evaluate(Source());
g_inputs["P"] = 1.0;
Check(Pressed(pulse), "pulse fires on rising edge");
Sleep(80);
Check(!Pressed(pulse), "pulse expires");
// The timing-window idiom seen in shared Dolphin configs.
auto window = Compile("!pulse(`W`, 0.05) & pulse(`W`, 0.15)");
g_inputs["W"] = 0.0;
window.Evaluate(Source());
g_inputs["W"] = 1.0;
Check(!Pressed(window), "window closed before its start");
Sleep(90);
Check(Pressed(window), "window open between the two pulses");
Sleep(90);
Check(!Pressed(window), "window closed after its end");
// timer ramps 0..1 and wraps, so a threshold turns it into a square wave.
auto timer = Compile("`X` & timer(0.1)");
g_inputs["X"] = 1.0;
int high = 0;
int low = 0;
for (int i = 0; i < 40; ++i) {
(Pressed(timer) ? high : low)++;
Sleep(5);
}
Check(high > 5 && low > 5, "timer alternates high and low");
// The exact D-Pad/Up line from the user's GCPadNew.ini.
auto dolphinLine = Compile("`Hat 0 N` | `Button 4` & timer(0.01)");
g_inputs["Hat 0 N"] = 0.0;
g_inputs["Button 4"] = 0.0;
Check(!Pressed(dolphinLine), "idle with nothing held");
g_inputs["Hat 0 N"] = 1.0;
Check(Pressed(dolphinLine), "hat alone presses");
g_inputs["Hat 0 N"] = 0.0;
g_inputs["Button 4"] = 1.0;
high = low = 0;
for (int i = 0; i < 60; ++i) {
(Pressed(dolphinLine) ? high : low)++;
Sleep(2);
}
Check(high > 5 && low > 5, "LB alternates via timer(0.01)");
// Regression tests for the CodeRabbit findings on PR #89.
g_inputs["A"] = 1.0;
// clamp with reversed bounds: std::clamp is UB when lo > hi.
Check(Compile("clamp(0.5, 1, 0)").Evaluate(Source()) == 0.5, "clamp tolerates reversed bounds");
// deadzone(v, 1) would divide by zero.
{
const double v = Compile("deadzone(`A`, 1)").Evaluate(Source());
Check(std::isfinite(v), "deadzone with dz=1 stays finite");
}
// timer with a zero or negative period would produce inf or NaN.
for (const char* text : {"timer(0)", "timer(-1)"}) {
const double v = Compile(text).Evaluate(Source());
Check(std::isfinite(v), std::string(text) + " stays finite");
}
// Any non-finite result is squashed before it can reach the uint8_t cast.
for (const char* text : {"sqrt(0 - 1)", "pow(10, 10000)", "tan(1.5707963267948966)"}) {
const double v = Compile(text).Evaluate(Source());
Check(std::isfinite(v), std::string(text) + " is sanitised at the boundary");
}
// tap count is user authored; negative, huge and non-finite must not reach
// the unsigned conversion.
for (const char* text : {"tap(`A`, 0.2, -1)", "tap(`A`, 0.2, 999999999)", "tap(`A`, 0.2, 0)"}) {
InputExpr::Expression e;
std::string err;
Check(InputExpr::Expression::Parse(text, e, err), std::string("parse ") + text);
const double v = e.Evaluate(Source());
Check(std::isfinite(v), std::string(text) + " evaluates without UB");
}
// Exponent notation is not part of the number syntax, matching Dolphin's
// lexer; it is rejected rather than silently misparsed.
{
InputExpr::Expression e;
std::string err;
Check(!InputExpr::Expression::Parse("tap(`A`, 0.2, 1e30)", e, err), "exponent notation rejected");
}
// A zero divisor must not skip the left subtree: stateful functions there
// still need their per-frame update.
{
auto divToggle = Compile("toggle(`D`) / `Z`");
g_inputs["Z"] = 0.0;
g_inputs["D"] = 0.0;
divToggle.Evaluate(Source());
g_inputs["D"] = 1.0;
divToggle.Evaluate(Source()); // rising edge seen even though rhs is 0
g_inputs["D"] = 0.0;
g_inputs["Z"] = 1.0;
Check(divToggle.Evaluate(Source()) > InputExpr::kConditionThreshold,
"toggle still latched while the divisor was zero");
}
// smooth with a zero rate divides 0 by 0; NaN must not stick in the node.
{
auto sm = Compile("smooth(`A`, 0)");
g_inputs["A"] = 1.0;
sm.Evaluate(Source());
Sleep(5);
Check(std::isfinite(sm.Evaluate(Source())), "smooth with a zero rate stays finite");
}
// Referenced inputs, used for diagnostics in the UI.
const auto refs = dolphinLine.ReferencedInputs();
Check(refs.size() == 2, "two referenced inputs");
// Errors are reported, not silently swallowed.
InputExpr::Expression bad;
std::string error;
Check(!InputExpr::Expression::Parse("`A` & ", bad, error), "trailing operator rejected");
Check(!InputExpr::Expression::Parse("nope(1)", bad, error), "unknown function rejected");
Check(!InputExpr::Expression::Parse("(`A`", bad, error), "missing paren rejected");
Check(!InputExpr::Expression::Parse("`A", bad, error), "unterminated backtick rejected");
Check(InputExpr::Expression::Parse("", bad, error) && bad.Empty(), "empty parses to empty");
Check(!InputExpr::Expression::Parse("hold(`A`)", bad, error), "wrong arg count rejected");
if (g_failures == 0) {
std::printf("all checks passed\n");
return 0;
}
std::printf("%d check(s) failed\n", g_failures);
return 1;
}