Open source Star Ruler 2 source code!
This commit is contained in:
Lucas de Vries
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#ifdef _WIN32
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#include <Windows.h>
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#include <XInput.h>
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#endif
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#include "GLFW/glfw3.h"
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#include "binds.h"
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#define JOY_AXIS_MAX 16
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#define JOY_BUTTON_MAX 64
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#define GLFW_DEADZONE 0.1
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#ifdef _WIN32
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//As XInput is not available on XP, we need to load it manually
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struct XInputLibrary {
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HMODULE dll;
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decltype(XInputGetState)* xInputGetState;
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decltype(XInputSetState)* xInputSetState;
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XInputLibrary() : dll(0), xInputGetState(0) {
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}
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~XInputLibrary() {
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if(dll != NULL)
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FreeLibrary(dll);
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}
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bool load() {
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//There are three current variants of the library, we try to get the most recent one
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//XInput1_4.dll from Window 8
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//XInput1_3.dll from DirectX
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//XInput9_1_0.dll on Vista
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dll = LoadLibrary("XInput1_4.dll");
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if(dll == NULL)
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dll = LoadLibrary("XInput1_3.dll");
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if(dll == NULL)
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dll = LoadLibrary("XInput9_1_0.dll");
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if(dll == NULL)
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return false;
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xInputGetState = (decltype(xInputGetState))GetProcAddress(dll, "XInputGetState");
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xInputSetState = (decltype(xInputSetState))GetProcAddress(dll, "XInputSetState");
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return xInputGetState != 0;
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}
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bool getState(DWORD index, XINPUT_STATE& state) {
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if(!dll || !xInputGetState)
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return false;
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return xInputGetState(index, &state) == ERROR_SUCCESS;
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}
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void setVibration(DWORD index, float lowFreq, float hiFreq) {
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if(xInputSetState) {
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XINPUT_VIBRATION vibration;
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ZeroMemory(&vibration, sizeof(vibration));
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if(lowFreq >= 1.f)
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vibration.wLeftMotorSpeed = 65535;
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else if(lowFreq <= 0.f)
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vibration.wLeftMotorSpeed = 0;
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else
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vibration.wLeftMotorSpeed = (WORD)(lowFreq * 65535.f);
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if(hiFreq >= 1.f)
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vibration.wRightMotorSpeed = 65535;
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else if(hiFreq <= 0.f)
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vibration.wRightMotorSpeed = 0;
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else
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vibration.wRightMotorSpeed = (WORD)(hiFreq * 65535.f);
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xInputSetState(index, &vibration);
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}
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}
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} xinput;
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#endif
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namespace scripts {
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enum JoystickButtonState {
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JBS_Off = GLFW_RELEASE,
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JBS_On = GLFW_PRESS,
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JBS_Released,
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JBS_Pressed
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};
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//TODO: This should go through a driver, not directly glfw
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class Joystick {
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public:
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bool isXInput;
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int index;
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unsigned axisCount;
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float axes[JOY_AXIS_MAX];
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unsigned buttonCount;
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unsigned char buttons[JOY_BUTTON_MAX];
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Joystick(unsigned Index) : axisCount(0), axes(), buttonCount(0), buttons(), isXInput(false) {
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#ifdef _WIN32
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XINPUT_STATE state;
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if(xinput.load() && xinput.getState(Index - 1, state)) {
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index = (int)Index - 1;
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isXInput = true;
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poll();
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return;
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}
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#endif
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if(Index >= 1 && Index <= 16)
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index = GLFW_JOYSTICK_1 + (int)Index - 1;
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poll();
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}
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bool poll() {
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if(isXInput) {
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#ifdef _WIN32
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XINPUT_STATE state;
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auto buttonUpdate = [this,&state](unsigned btn, bool pressed) {
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auto& button = buttons[btn];
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if(pressed) {
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if(button == JBS_Pressed)
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button = JBS_On;
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else if(button != JBS_On)
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button = JBS_Pressed;
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}
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else {
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if(button == JBS_Released)
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button = JBS_Off;
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else if(button != JBS_Off)
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button = JBS_Released;
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}
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};
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auto deadZone = [](int value, int deadzone, int scale) -> float {
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if(value >= -deadzone && value <= deadzone)
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return 0;
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bool neg = value < 0;
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if(neg)
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value = -value;
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float result = (float)(value - deadzone) / (float)(scale - deadzone);
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return neg ? -result : result;
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};
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if(xinput.getState(index, state)) {
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buttonCount = 16;
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buttonUpdate(0, state.Gamepad.wButtons & XINPUT_GAMEPAD_A);
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buttonUpdate(1, state.Gamepad.wButtons & XINPUT_GAMEPAD_B);
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buttonUpdate(2, state.Gamepad.wButtons & XINPUT_GAMEPAD_X);
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buttonUpdate(3, state.Gamepad.wButtons & XINPUT_GAMEPAD_Y);
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buttonUpdate(4, state.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_UP);
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buttonUpdate(5, state.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_LEFT);
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buttonUpdate(6, state.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_DOWN);
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buttonUpdate(7, state.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_RIGHT);
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buttonUpdate(8, state.Gamepad.wButtons & XINPUT_GAMEPAD_LEFT_SHOULDER);
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buttonUpdate(9, state.Gamepad.bLeftTrigger > XINPUT_GAMEPAD_TRIGGER_THRESHOLD);
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buttonUpdate(10, state.Gamepad.wButtons & XINPUT_GAMEPAD_LEFT_THUMB);
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buttonUpdate(11, state.Gamepad.wButtons & XINPUT_GAMEPAD_RIGHT_SHOULDER);
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buttonUpdate(12, state.Gamepad.bRightTrigger > XINPUT_GAMEPAD_TRIGGER_THRESHOLD);
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buttonUpdate(13, state.Gamepad.wButtons & XINPUT_GAMEPAD_RIGHT_THUMB);
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buttonUpdate(14, state.Gamepad.wButtons & XINPUT_GAMEPAD_BACK);
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buttonUpdate(15, state.Gamepad.wButtons & XINPUT_GAMEPAD_START);
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axisCount = 6;
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axes[0] = deadZone(state.Gamepad.sThumbLX, XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, 32768);
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axes[1] = deadZone(state.Gamepad.sThumbLY, XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, 32768);
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axes[2] = deadZone(state.Gamepad.sThumbRX, XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE, 32768);
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axes[3] = deadZone(state.Gamepad.sThumbRY, XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE, 32768);
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axes[4] = deadZone(state.Gamepad.bLeftTrigger, XINPUT_GAMEPAD_TRIGGER_THRESHOLD, 255);
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axes[5] = deadZone(state.Gamepad.bRightTrigger, XINPUT_GAMEPAD_TRIGGER_THRESHOLD, 255);
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return true;
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}
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#endif
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return false;
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}
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#ifdef LIN_MODE
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else if(true) {
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//Statically figured out button/axes numbers from the xboxdrv linux driver.
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int btnCnt;
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auto* newState = glfwGetJoystickButtons(index, &btnCnt);
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int axCnt;
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const float* glfwAxes = glfwGetJoystickAxes(index, &axCnt);
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auto setButton = [this](unsigned btn, bool pressed) {
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auto& button = buttons[btn];
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if(pressed) {
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if(button == JBS_Pressed)
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button = JBS_On;
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else if(button != JBS_On)
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button = JBS_Pressed;
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}
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else {
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if(button == JBS_Released)
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button = JBS_Off;
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else if(button != JBS_Off)
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button = JBS_Released;
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}
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};
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auto buttonUpdate = [&](unsigned btn, unsigned index) {
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if((int)index >= btnCnt) {
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buttons[btn] = JBS_Off;
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return;
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}
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setButton(btn, newState[index]);
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};
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auto buttonFromAxis = [&](unsigned btn, unsigned index, float thresMin, float thresMax) {
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if((int)index >= axCnt) {
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buttons[btn] = JBS_Off;
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return;
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}
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setButton(btn, glfwAxes[index] >= thresMin && glfwAxes[index] <= thresMax);
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};
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auto axisUpdate = [&](unsigned ax, unsigned index) {
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if((int)index >= axCnt) {
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axes[ax] = 0.f;
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return;
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}
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float val = glfwAxes[index];
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if(val >= -GLFW_DEADZONE && val <= GLFW_DEADZONE)
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axes[ax] = 0.f;
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else if(val < 0)
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axes[ax] = -((-val - GLFW_DEADZONE) / (1.f - GLFW_DEADZONE));
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else
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axes[ax] = (val - GLFW_DEADZONE) / (1.f - GLFW_DEADZONE);
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};
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auto triggerAxis = [&](unsigned ax, unsigned index, float mult) {
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if((int)index >= axCnt) {
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axes[ax] = 0.f;
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return;
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}
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float val = glfwAxes[index] * mult;
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if(val <= -0.9f)
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axes[ax] = 0.f;
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else
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axes[ax] = (val + 0.9f) / 1.9f;
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};
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buttonUpdate(0, 0);
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buttonUpdate(1, 1);
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buttonUpdate(2, 2);
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buttonUpdate(3, 3);
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buttonFromAxis(4, 7, 0.1f, 1.f);
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buttonFromAxis(5, 6, -1.f, -0.1f);
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buttonFromAxis(6, 7, -1.f, -0.1f);
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buttonFromAxis(7, 6, 0.1f, 1.f);
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buttonUpdate(8, 4);
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buttonFromAxis(9, 5, -1.f, 0.f);
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buttonUpdate(10, 9);
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buttonUpdate(11, 5);
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buttonFromAxis(12, 4, 0.f, 1.f);
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buttonUpdate(13, 10);
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buttonUpdate(14, 6);
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buttonUpdate(15, 7);
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buttonCount = 16;
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axisUpdate(0, 0);
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axisUpdate(1, 1);
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axisUpdate(2, 2);
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axisUpdate(3, 3);
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triggerAxis(4, 5, -1.f);
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triggerAxis(5, 4, 1.f);
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axisCount = 6;
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return true;
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}
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#endif
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else {
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int cnt;
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auto* newState = glfwGetJoystickButtons(index, &cnt);
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buttonCount = cnt;
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if(buttonCount == 0)
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return false;
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for(unsigned i = 0; i < JOY_BUTTON_MAX; ++i) {
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if(buttons[i] == newState[i])
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continue;
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if(newState[i] == GLFW_PRESS) {
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if(buttons[i] == JBS_Pressed)
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buttons[i] = JBS_On;
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else
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buttons[i] = JBS_Pressed;
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}
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else {
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if(buttons[i] == JBS_Released)
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buttons[i] = JBS_Off;
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else
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buttons[i] = JBS_Released;
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}
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}
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const float* glfwAxes = glfwGetJoystickAxes(index, &cnt);
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axisCount = cnt;
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for(int i = 0; i < cnt && i < JOY_AXIS_MAX; ++i) {
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//Static deadzone, because glfw
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float val = glfwAxes[i];
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if(val >= -GLFW_DEADZONE && val <= GLFW_DEADZONE)
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axes[i] = 0.f;
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else if(val < 0)
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axes[i] = -((-val - GLFW_DEADZONE) / (1.f - GLFW_DEADZONE));
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else
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axes[i] = (val - GLFW_DEADZONE) / (1.f - GLFW_DEADZONE);
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}
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return buttonCount > 0;
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}
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}
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float getAxis(unsigned axis) const {
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if(axis < JOY_AXIS_MAX)
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return axes[axis];
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else
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return 0;
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}
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unsigned char getButton(unsigned id) const {
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if(id < JOY_BUTTON_MAX)
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return buttons[id];
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else
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return JBS_Off;
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}
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bool getPressed(unsigned id) const {
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auto state = getButton(id);
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return state == JBS_On || state == JBS_Pressed;
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}
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bool connected() const {
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return glfwJoystickPresent(index) == GL_TRUE;
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}
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void setVibration(float lowFreq, float hiFreq) {
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#ifdef _WIN32
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if(isXInput) {
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xinput.setVibration(index, lowFreq, hiFreq);
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}
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#endif
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}
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static void construct(void* memory, unsigned index) {
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new(memory) Joystick(index);
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}
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};
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void RegisterJoystickBinds() {
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ClassBind joystick("Joystick", asOBJ_VALUE | asOBJ_POD | asOBJ_APP_CLASS_C, sizeof(Joystick));
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joystick.addConstructor("void f(uint)", asFUNCTION(Joystick::construct));
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joystick.addMethod("bool connected() const", asMETHOD(Joystick,connected));
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joystick.addMethod("bool poll()", asMETHOD(Joystick,poll));
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joystick.addMethod("float get_axis(uint index) const", asMETHOD(Joystick,getAxis));
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joystick.addMethod("uint8 get_button(uint index) const", asMETHOD(Joystick,getButton));
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joystick.addMethod("bool get_pressed(uint index) const", asMETHOD(Joystick,getPressed));
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joystick.addMethod("void setVibration(float low, float high) const", asMETHOD(Joystick,setVibration));
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joystick.addMember("uint axisCount", offsetof(Joystick,axisCount));
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joystick.addMember("uint buttonCount", offsetof(Joystick,buttonCount));
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EnumBind buttonStates("JoystickButtonState");
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buttonStates["JBS_On"] = JBS_On;
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buttonStates["JBS_Off"] = JBS_Off;
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buttonStates["JBS_Pressed"] = JBS_Pressed;
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buttonStates["JBS_Released"] = JBS_Released;
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EnumBind gamepad("GamepadKeys");
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gamepad["GP_A"] = 0;
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gamepad["GP_B"] = 1;
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gamepad["GP_X"] = 2;
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gamepad["GP_Y"] = 3;
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gamepad["GP_UP"] = 4;
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gamepad["GP_LEFT"] = 5;
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gamepad["GP_DOWN"] = 6;
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gamepad["GP_RIGHT"] = 7;
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gamepad["GP_LB"] = 8;
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gamepad["GP_LT"] = 9;
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gamepad["GP_L3"] = 10;
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gamepad["GP_RB"] = 11;
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gamepad["GP_RT"] = 12;
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gamepad["GP_R3"] = 13;
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gamepad["GP_BACK"] = 14;
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gamepad["GP_START"] = 15;
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gamepad["GP_AXIS_LX"] = 0;
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gamepad["GP_AXIS_LY"] = 1;
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gamepad["GP_AXIS_RX"] = 2;
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gamepad["GP_AXIS_RY"] = 3;
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gamepad["GP_AXIS_LT"] = 4;
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gamepad["GP_AXIS_RT"] = 5;
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}
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};
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