VVVVVV/desktop_version/src/KeyPoll.cpp

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#define KEY_DEFINITION
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#include "KeyPoll.h"
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#include <string.h>
#include <utf8/unchecked.h>
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#include "Alloc.h"
Call VVV_exit() when SDL_QUIT is received This fixes a regression introduced by #535 where a quit signal (e.g. Ctrl-C) sent to the window while the game was in unfocus pause wouldn't close the game. One problem was that key.quitProgram would only be checked when control flow switched back to the outer loop in main(), which would only happen when the loop order state machine switched to a delta function. As the unfocused func table didn't have any delta functions, this means key.quitProgram would never be checked. So a naïve solution to this would just be to add a no-op delta func entry to the unfocused func table. However, we then run into a separate issue where a delta function at the end of a func list never reassigns the active funcs, causing the game to be stuck in the unfocus pause forever. Active func reassignment only happens after fixed funcs. So then a naïve solution after that would be to simply add a no-op fixed func entry after that. And indeed, that would fix the whole issue. However, I want to do things the right way. And this does not seem like the right way. Even putting aside the separate last-func-being-delta issue, it mandates that every func list needs a delta function. Which seems quite unnecessary to me. Another solution I considered was copy-pasting the key.quitProgram check to the inner loops, or adding some sort of signal propagation to the inner loops - implemented by copy-pasting checks after each loop - so we didn't need to copy-paste key.quitProgram... but that seems really messy, too. So, I realized that we could throw away key.quitProgram, and simply call VVV_exit() directly when we receive an SDL_QUIT event. This fixes the issue, this removes an unnecessary middleman variable, and it's pretty cleanly and simply the right thing to do.
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#include "Exit.h"
#include "Game.h"
#include "GlitchrunnerMode.h"
#include "Graphics.h"
#include "Music.h"
#include "Screen.h"
#include "Vlogging.h"
int inline KeyPoll::getThreshold(void)
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{
switch (sensitivity)
{
case 0:
return 28000;
case 1:
return 16000;
case 2:
return 8000;
case 3:
return 4000;
case 4:
return 2000;
}
return 8000;
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}
KeyPoll::KeyPoll(void)
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{
xVel = 0;
yVel = 0;
// 0..5
sensitivity = 2;
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keybuffer="";
leftbutton=0; rightbutton=0; middlebutton=0;
mx=0; my=0;
resetWindow = 0;
pressedbackspace=false;
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linealreadyemptykludge = false;
Fix resumemusic/musicfadein not working It seems like they were unfinished. This commit makes them properly work. When a track is stopped with stopmusic() or musicfadeout(), resumemusic() will resume from where the track stopped. musicfadein() does the same but does it with a gradual fade instead of suddenly playing it at full volume. I changed several interfaces around for this. First, setting currentsong to -1 when music is stopped is handled in the hook callback that gets called by SDL_mixer whenever the music stops. Otherwise, it'd be problematic if currentsong was set to -1 when the song starts fading out instead of when the song actually ends. Also, music.play() has a few optional arguments now, to reduce the copying-and-pasting of music code. Lastly, we have to roll our own tracker of music length by using SDL_GetPerformanceCounter(), because there's no way to get the music position if a song fades out. (We could implicitly keep the music position if we abruptly stopped the song using Mix_PauseMusic(), and resume it using Mix_ResumeMusic(), but ignoring the fact that those two functions are also used on the unfocus-pause (which, as it turns out, is basically a non-issue because the unfocus-pause can use some other functions), there's no equivalent for fading out, i.e. there's no "fade out and pause when it fully fades out" function in SDL_mixer.) And then we have to account for the unfocus-pause in our manual tracker. Other than that, these commands are now fully functional.
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isActive = true;
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}
void KeyPoll::enabletextentry(void)
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{
keybuffer="";
SDL_StartTextInput();
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}
void KeyPoll::disabletextentry(void)
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{
SDL_StopTextInput();
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}
bool KeyPoll::textentry(void)
Axe manual state trackers and use SDL_IsTextInputActive() After looking at pull request #446, I got a bit annoyed that we have TWO variables, key.textentrymode and ed.textentry, that we rolled ourselves to track the state of something SDL already provides us a function to easily query: SDL_IsTextInputActive(). We don't need to have either of these two variables, and we shouldn't. So that's what I do in this patch. Both variables have been axed in favor of using this function, and I just made a wrapper out of it, named key.textentry(). For bonus points, this gets rid of the ugly NO_CUSTOM_LEVELS and NO_EDITOR ifdef in main.cpp, since text entry is enabled when entering the script list and disabled when exiting it. This makes the code there easier to read, too. Furthermore, apparently key.textentrymode was initialized to *true* instead of false... for whatever reason. But that's gone now, too. Now, you'd think there wouldn't be any downside to using SDL_IsTextInputActive(). After all, it's a function that SDL itself provides, right? Wrong. For whatever reason, it seems like text input is active *from the start of the program*, meaning that what would happen is I would go into the editor, and find that I can't move around nor place tiles nor anything else. Then I would press Esc, and then suddenly become able to do those things I wanted to do before. I have no idea why the above happens, but all I can do is to just insert an SDL_StopTextInput() immediately after the SDL_Init() in main.cpp. Of course, I have to surround it with an SDL_IsTextInputActive() check to make sure I don't do anything extraneous by stopping input when it's already stopped.
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{
return SDL_IsTextInputActive() == SDL_TRUE;
Axe manual state trackers and use SDL_IsTextInputActive() After looking at pull request #446, I got a bit annoyed that we have TWO variables, key.textentrymode and ed.textentry, that we rolled ourselves to track the state of something SDL already provides us a function to easily query: SDL_IsTextInputActive(). We don't need to have either of these two variables, and we shouldn't. So that's what I do in this patch. Both variables have been axed in favor of using this function, and I just made a wrapper out of it, named key.textentry(). For bonus points, this gets rid of the ugly NO_CUSTOM_LEVELS and NO_EDITOR ifdef in main.cpp, since text entry is enabled when entering the script list and disabled when exiting it. This makes the code there easier to read, too. Furthermore, apparently key.textentrymode was initialized to *true* instead of false... for whatever reason. But that's gone now, too. Now, you'd think there wouldn't be any downside to using SDL_IsTextInputActive(). After all, it's a function that SDL itself provides, right? Wrong. For whatever reason, it seems like text input is active *from the start of the program*, meaning that what would happen is I would go into the editor, and find that I can't move around nor place tiles nor anything else. Then I would press Esc, and then suddenly become able to do those things I wanted to do before. I have no idea why the above happens, but all I can do is to just insert an SDL_StopTextInput() immediately after the SDL_Init() in main.cpp. Of course, I have to surround it with an SDL_IsTextInputActive() check to make sure I don't do anything extraneous by stopping input when it's already stopped.
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}
void KeyPoll::toggleFullscreen(void)
{
gameScreen.toggleFullScreen();
keymap.clear(); /* we lost the input due to a new window. */
if (GlitchrunnerMode_less_than_or_equal(Glitchrunner2_2))
{
game.press_left = false;
game.press_right = false;
game.press_action = true;
game.press_map = false;
}
}
static int changemousestate(
int timeout,
const bool show,
const bool hide
) {
int prev;
int new_;
if (timeout > 0)
{
return --timeout;
}
/* If we want to both show and hide at the same time, prioritize showing */
if (show)
{
new_ = SDL_ENABLE;
}
else if (hide)
{
new_ = SDL_DISABLE;
}
else
{
return timeout;
}
prev = SDL_ShowCursor(SDL_QUERY);
if (prev == new_)
{
return timeout;
}
SDL_ShowCursor(new_);
switch (new_)
{
case SDL_DISABLE:
timeout = 0;
break;
case SDL_ENABLE:
timeout = 30;
break;
}
return timeout;
}
void KeyPoll::Poll(void)
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{
static int mousetoggletimeout = 0;
bool showmouse = false;
bool hidemouse = false;
bool altpressed = false;
bool fullscreenkeybind = false;
SDL_Event evt;
while (SDL_PollEvent(&evt))
{
switch (evt.type)
{
/* Keyboard Input */
case SDL_KEYDOWN:
{
keymap[evt.key.keysym.sym] = true;
if (evt.key.keysym.sym == SDLK_BACKSPACE)
{
pressedbackspace = true;
}
#ifdef __APPLE__ /* OSX prefers the command keys over the alt keys. -flibit */
altpressed = keymap[SDLK_LGUI] || keymap[SDLK_RGUI];
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#else
altpressed = keymap[SDLK_LALT] || keymap[SDLK_RALT];
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#endif
bool returnpressed = evt.key.keysym.sym == SDLK_RETURN;
bool fpressed = evt.key.keysym.sym == SDLK_f;
bool f11pressed = evt.key.keysym.sym == SDLK_F11;
if ((altpressed && (returnpressed || fpressed)) || f11pressed)
{
fullscreenkeybind = true;
}
if (textentry())
{
if (evt.key.keysym.sym == SDLK_BACKSPACE && !keybuffer.empty())
{
std::string::iterator iter = keybuffer.end();
utf8::unchecked::prior(iter);
keybuffer = keybuffer.substr(0, iter - keybuffer.begin());
if (keybuffer.empty())
{
linealreadyemptykludge = true;
}
}
else if ( evt.key.keysym.sym == SDLK_v &&
keymap[SDLK_LCTRL] )
{
char* text = SDL_GetClipboardText();
if (text != NULL)
{
keybuffer += text;
VVV_free(text);
}
}
}
break;
}
case SDL_KEYUP:
keymap[evt.key.keysym.sym] = false;
if (evt.key.keysym.sym == SDLK_BACKSPACE)
{
pressedbackspace = false;
}
break;
case SDL_TEXTINPUT:
if (!altpressed)
{
keybuffer += evt.text.text;
}
break;
/* Mouse Input */
case SDL_MOUSEMOTION:
mx = evt.motion.x;
my = evt.motion.y;
break;
case SDL_MOUSEBUTTONDOWN:
switch (evt.button.button)
{
case SDL_BUTTON_LEFT:
mx = evt.button.x;
my = evt.button.y;
leftbutton = 1;
break;
case SDL_BUTTON_RIGHT:
mx = evt.button.x;
my = evt.button.y;
rightbutton = 1;
break;
case SDL_BUTTON_MIDDLE:
mx = evt.button.x;
my = evt.button.y;
middlebutton = 1;
break;
}
break;
case SDL_MOUSEBUTTONUP:
switch (evt.button.button)
{
case SDL_BUTTON_LEFT:
mx = evt.button.x;
my = evt.button.y;
leftbutton=0;
break;
case SDL_BUTTON_RIGHT:
mx = evt.button.x;
my = evt.button.y;
rightbutton=0;
break;
case SDL_BUTTON_MIDDLE:
mx = evt.button.x;
my = evt.button.y;
middlebutton=0;
break;
}
break;
/* Controller Input */
case SDL_CONTROLLERBUTTONDOWN:
buttonmap[(SDL_GameControllerButton) evt.cbutton.button] = true;
break;
case SDL_CONTROLLERBUTTONUP:
buttonmap[(SDL_GameControllerButton) evt.cbutton.button] = false;
break;
case SDL_CONTROLLERAXISMOTION:
{
const int threshold = getThreshold();
switch (evt.caxis.axis)
{
case SDL_CONTROLLER_AXIS_LEFTX:
if ( evt.caxis.value > -threshold &&
evt.caxis.value < threshold )
{
xVel = 0;
}
else
{
xVel = (evt.caxis.value > 0) ? 1 : -1;
}
break;
case SDL_CONTROLLER_AXIS_LEFTY:
if ( evt.caxis.value > -threshold &&
evt.caxis.value < threshold )
{
yVel = 0;
}
else
{
yVel = (evt.caxis.value > 0) ? 1 : -1;
}
break;
}
break;
}
case SDL_CONTROLLERDEVICEADDED:
{
SDL_GameController *toOpen = SDL_GameControllerOpen(evt.cdevice.which);
vlog_info(
"Opened SDL_GameController ID #%i, %s",
evt.cdevice.which,
SDL_GameControllerName(toOpen)
);
controllers[SDL_JoystickInstanceID(SDL_GameControllerGetJoystick(toOpen))] = toOpen;
break;
}
case SDL_CONTROLLERDEVICEREMOVED:
{
SDL_GameController *toClose = controllers[evt.cdevice.which];
controllers.erase(evt.cdevice.which);
vlog_info("Closing %s", SDL_GameControllerName(toClose));
SDL_GameControllerClose(toClose);
break;
}
/* Window Events */
case SDL_WINDOWEVENT:
switch (evt.window.event)
{
/* Window Resize */
case SDL_WINDOWEVENT_RESIZED:
if (SDL_GetWindowFlags(
SDL_GetWindowFromID(evt.window.windowID)
) & SDL_WINDOW_INPUT_FOCUS)
{
resetWindow = true;
}
break;
/* Window Focus */
case SDL_WINDOWEVENT_FOCUS_GAINED:
if (!game.disablepause)
{
isActive = true;
if ((!game.disableaudiopause || !game.disabletemporaryaudiopause) && music.currentsong != -1)
{
music.resume();
music.resumeef();
}
}
if (SDL_strcmp(SDL_GetCurrentVideoDriver(), "x11") == 0)
{
if (wasFullscreen)
{
gameScreen.isWindowed = false;
SDL_SetWindowFullscreen(
SDL_GetWindowFromID(evt.window.windowID),
SDL_WINDOW_FULLSCREEN_DESKTOP
);
}
}
SDL_DisableScreenSaver();
break;
case SDL_WINDOWEVENT_FOCUS_LOST:
if (!game.disablepause)
{
isActive = false;
if (!game.disableaudiopause || !game.disabletemporaryaudiopause)
{
music.pause();
music.pauseef();
}
}
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if (SDL_strcmp(SDL_GetCurrentVideoDriver(), "x11") == 0)
{
wasFullscreen = !gameScreen.isWindowed;
gameScreen.isWindowed = true;
SDL_SetWindowFullscreen(
SDL_GetWindowFromID(evt.window.windowID),
0
);
}
SDL_EnableScreenSaver();
break;
/* Mouse Focus */
case SDL_WINDOWEVENT_ENTER:
SDL_DisableScreenSaver();
break;
case SDL_WINDOWEVENT_LEAVE:
SDL_EnableScreenSaver();
break;
}
break;
/* Quit Event */
case SDL_QUIT:
VVV_exit(0);
break;
}
switch (evt.type)
{
case SDL_KEYDOWN:
if (evt.key.repeat == 0)
{
hidemouse = true;
}
break;
case SDL_TEXTINPUT:
case SDL_CONTROLLERBUTTONDOWN:
case SDL_CONTROLLERAXISMOTION:
hidemouse = true;
break;
case SDL_MOUSEMOTION:
case SDL_MOUSEBUTTONDOWN:
showmouse = true;
break;
}
}
mousetoggletimeout = changemousestate(
mousetoggletimeout,
showmouse,
hidemouse
);
if (fullscreenkeybind)
{
toggleFullscreen();
}
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}
bool KeyPoll::isDown(SDL_Keycode key)
{
return keymap[key];
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}
bool KeyPoll::isDown(std::vector<SDL_GameControllerButton> buttons)
{
for (size_t i = 0; i < buttons.size(); i += 1)
{
if (buttonmap[buttons[i]])
{
return true;
}
}
return false;
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}
bool KeyPoll::isDown(SDL_GameControllerButton button)
{
return buttonmap[button];
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}
bool KeyPoll::controllerButtonDown(void)
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{
for (
SDL_GameControllerButton button = SDL_CONTROLLER_BUTTON_A;
button < SDL_CONTROLLER_BUTTON_DPAD_UP;
button = (SDL_GameControllerButton) (button + 1)
) {
if (isDown(button))
{
return true;
}
}
return false;
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}
bool KeyPoll::controllerWantsLeft(bool includeVert)
{
return ( buttonmap[SDL_CONTROLLER_BUTTON_DPAD_LEFT] ||
xVel < 0 ||
( includeVert &&
( buttonmap[SDL_CONTROLLER_BUTTON_DPAD_UP] ||
yVel < 0 ) ) );
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}
bool KeyPoll::controllerWantsRight(bool includeVert)
{
return ( buttonmap[SDL_CONTROLLER_BUTTON_DPAD_RIGHT] ||
xVel > 0 ||
( includeVert &&
( buttonmap[SDL_CONTROLLER_BUTTON_DPAD_DOWN] ||
yVel > 0 ) ) );
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}