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engine.d
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engine.d
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// This code is D 1.0
/**
Part of my old D 1.0 game helper code that used SDL. I keep it compiling on new D compilers too, but it is not meant to be used in new projects.
Version: 1.0
License: GNU General Public License
*/
module arsd.engine; //@-L-lSDL -L-lSDL_mixer -L-lSDL_ttf -L-lSDL_image -L-lGL -L-lSDL_net
pragma(lib, "SDL");
pragma(lib, "SDL_mixer");
pragma(lib, "SDL_ttf");
pragma(lib, "SDL_image");
pragma(lib, "SDL_net");
pragma(lib, "GL");
// FIXME: the difference between directions and buttons should be removed
import sdl.SDL;
import sdl.SDL_net;
version(D_Version2) {
import random = core.stdc.stdlib;
alias random.srand srand;
char[] convToString(int a) {
return null;
}
string immutableString(in char[] a) { return a.idup; }
} else {
import random = std.random;
void srand(uint a) {
random.rand_seed(a, 0);
}
alias std.string.toString convToString;
char[] immutableString(in char[] a) { return a; }
}
import std.math;
public import arsd.screen;
public import arsd.audio;
public import sdl.SDL_keysym_;
version(D_Version2)
import core.stdc.stdarg;
else
import std.stdarg;
version(D_Version2) {
import core.stdc.stdio;
void writefln(string s) { printf("%*s", s.length, s.ptr); }
void writefln(string s, int i) { printf(s.ptr, i); }
} else
import std.stdio;
//version(linux) pragma(lib, "kbhit.o");
int randomNumber(int min, int max){
if(min == max)
return min;
max++; // make it inclusive
uint a = random.rand();
a %= (max - min);
a += min;
return a;
}
// HACK!
bool waiting;
uint globalTimer;
class Callable{
public:
abstract void run(int timer);
// after is the other thing that is calling this to be paused and then unpaused
final void start(Callable after = null){
After = after;
if(After !is null)
After.paused = true;
paused = false;
for(int a = 0; a < objs.length; a++)
if(objs[a] is null){
objs[a] = this;
goto done;
}
objs.length = objs.length + 1;
objs[objs.length - 1] = this;
done:
frame();
}
final void queue(){
int a;
paused = true;
for(a = 0; a < objs.length; a++)
if(objs[a] is null){
objs[a] = this;
goto done;
}
objs.length = a + 1;
objs[a] = this;
done:
if(a == 1){
objs[0].paused = true;
paused = false;
} else {
objs[a - 1].After = this;
}
After = objs[0];
frame();
}
final void terminate(){
for(int a = 0; a < objs.length; a++)
if(objs[a] !is null && objs[a] == this)
objs[a] = null;
if(After !is null){
After.paused = false;
After.frame();
}
}
bool paused;
private:
void frame(){
if(!paused){
if(globalTimer > lastFrame){
lastFrame = globalTimer;
run(Timer);
Timer++;
}
}
}
int Timer;
uint lastFrame;
Callable After;
}
Callable[] objs;
// end HACK
// enum {up = 0, down, left, right};
enum {select = 8, start = 9, square = 3, cross = 2, circle = 1, triangle = 0,
R1 = 7, R2 = 5, L2 = 4, L1 = 6, L3 = 10, R3 = 11, special = 12,
up = 13, down = 14, left = 15, right = 16, // dpad and left stick
up2 = 17, down2 = 18, left2 = 19, right2 = 20}; // right stick
const int NUM_BUTTONS = 21;
class Engine{
static const int NoVideo = 0;
static const int Video1024x768 = 1;
static const int Video640x480 = 2;
static const int Video800x600 = 3;
static const int Video320x200 = 4;
static const int Video512x512 = 5;
static const int VideoFullScreen = 32;
alias int Direction;
alias int Buttons;
static const int MAX_NET = 8;
static const int NET_PORT = 7777;
// For being a network server.....
bool isServer;
struct NetClient {
TCPsocket sock;
int numPlayers;
int startingPlayer;
int latency; // in milliseconds
int state; // Only valid if sock is non null.
// 0: waiting on initial timestamp
// 1: waiting on lag response
// 2: ready for starting
}
NetClient[MAX_NET] clients;
int numberOfClients;
int maxLatency;
// For being a network client
TCPsocket clientsock;
// All done.
void beginServing(){
TCPsocket serversock;
socketset = SDLNet_AllocSocketSet(MAX_NET+1);
if(socketset is null)
throw new Exception("AllocSocketSet");
scope(failure)
SDLNet_FreeSocketSet(socketset);
IPaddress serverIP;
SDLNet_ResolveHost(&serverIP, null, NET_PORT);
serversock = SDLNet_TCP_Open(&serverIP);
if(serversock is null)
throw new Exception("Server sock");
scope(exit)
SDLNet_TCP_Close(serversock);
if(SDLNet_AddSocket(socketset, cast(SDLNet_GenericSocket) serversock) < 0)
throw new Exception("addsocket");
scope(exit)
SDLNet_DelSocket(socketset, cast(SDLNet_GenericSocket) serversock);
writefln("Waiting for players to join the game.\nPress enter when everyone has joined to start the game.");
uint randomSeed = random.rand();
srand(randomSeed);
writefln("TEST: %d", randomNumber(0, 100));
bool loopingNeeeded = false; // potential FIXME for later
while(!kbhit() || loopingNeeeded){
int n = SDLNet_CheckSockets(socketset, 10);
if(n < 0)
throw new Exception("Check sockets");
if(n == 0)
continue;
if(SDLNet_SocketReady(serversock)){
TCPsocket newsock;
newsock = SDLNet_TCP_Accept(serversock);
if(newsock is null){
continue;
}
SDLNet_AddSocket(socketset, cast(SDLNet_GenericSocket) newsock);
// accept the connection
writefln("New player:");
clients[numberOfClients].sock = newsock;
numberOfClients++;
}
// Check the rest of our sockets for data
for(int a = 0; a < numberOfClients; a++){
if(SDLNet_SocketReady(clients[a].sock)){
byte[16] data; // this needs to be EXACTLY the size we are actually going to get.
if(SDLNet_TCP_Recv(clients[a].sock, data.ptr, 16) <= 0){
// the connection was closed
for(int b = a; b < numberOfClients; b++)
clients[b] = clients[b+1];
clients[numberOfClients] = NetClient.init;
numberOfClients--;
a--;
continue;
}
// And handle the data here.
switch(clients[a].state){
default: assert(0);
case 0: // this is the timestamp and stuff
int ts = SDLNet_Read32(data.ptr);
clients[a].numPlayers = SDLNet_Read32(data.ptr+4);
int startingPlayer = numberOfPlayers;
numberOfPlayers+= clients[a].numPlayers;
clients[a].startingPlayer = startingPlayer;
SDLNet_Write32(ts, data.ptr);
SDLNet_Write32(SDL_GetTicks(), data.ptr+4);
SDLNet_Write32(randomSeed, data.ptr+8);
SDLNet_Write32(startingPlayer, data.ptr+12);
if(SDLNet_TCP_Send(clients[a].sock, data.ptr, 16) <= 0)
throw new Exception("TCP send");
clients[a].state++;
break;
case 1: // this is telling of the latency
clients[a].latency = SDLNet_Read32(data.ptr);
if(clients[a].latency > maxLatency)
maxLatency = clients[a].latency;
writefln("Latency: %d", clients[a].latency);
clients[a].state++;
break;
case 2:
throw new Exception("unknown data came in");
}
}
}
}
isServer = true;
}
void connectTo(in char[] whom){
socketset = SDLNet_AllocSocketSet(1);
if(socketset is null)
throw new Exception("AllocSocketSet");
scope(failure)
SDLNet_FreeSocketSet(socketset);
IPaddress ip;
if(SDLNet_ResolveHost(&ip, (whom~"\0").ptr, NET_PORT) == -1)
throw new Exception("Resolve host");
clientsock = SDLNet_TCP_Open(&ip);
if(clientsock is null)
throw new Exception("open socket");
if(SDLNet_AddSocket(socketset, cast(SDLNet_GenericSocket) clientsock) < 0)
throw new Exception("addsocket");
scope(failure) SDLNet_DelSocket(socketset, cast(SDLNet_GenericSocket) clientsock);
byte[16] data;
int timeStamp = SDL_GetTicks();
SDLNet_Write32(timeStamp, data.ptr);
SDLNet_Write32(numberOfLocalPlayers, data.ptr+4);
if(SDLNet_TCP_Send(clientsock, data.ptr, 16) <= 0)
throw new Exception("TCP send");
if(SDLNet_TCP_Recv(clientsock, data.ptr, 16) <= 0)
throw new Exception("TCP recv");
int receivedTimeStamp = SDLNet_Read32(data.ptr);
int serverTimeStamp = SDLNet_Read32(data.ptr+4);
uint randomSeed = SDLNet_Read32(data.ptr+8);
firstLocalPlayer = SDLNet_Read32(data.ptr+12);
writefln("First local player = %d", firstLocalPlayer);
srand(randomSeed);
writefln("TEST: %d", randomNumber(0, 100));
int ourLatency = SDL_GetTicks() - receivedTimeStamp;
SDLNet_Write32(ourLatency, data.ptr);
SDLNet_Write32(serverTimeStamp, data.ptr+4);
if(SDLNet_TCP_Send(clientsock, data.ptr, 16) <= 0)
throw new Exception("TCP send 2");
waiting = true;
}
// This should be called AFTER most initialization, but BEFORE you initialize your players; you don't
// know the number of players for sure until this call returns.
void waitOnNetwork(){
if(!net)
return;
if(isServer){
// Calculate when to start, then send the signal to everyone.
int desiredLag = cast(int) round(cast(float) maxLatency / msPerTick) + 2;//1;
lag = desiredLag;
writefln("Lag = %d", lag);
for(int a = 0; a < numberOfClients; a++){
int delay = maxLatency - clients[a].latency;
byte[16] data;
// FIXME: We need to send all player data here!
SDLNet_Write32(desiredLag, data.ptr);
SDLNet_Write32(delay, data.ptr + 4);
SDLNet_Write32(numberOfPlayers, data.ptr + 8);
if(SDLNet_TCP_Send(clients[a].sock, data.ptr, 16) < 16)
throw new Exception("Sending failed");
}
SDL_Delay(maxLatency); // After waiting for the signal to reach everyone, we can now begin the game!
return;
} else {
// handle the data
byte[16] data;
// FIXME: we need to read special per game player data here!
if(SDLNet_TCP_Recv(clientsock, data.ptr, 16) <= 0)
throw new Exception("Server closed the connection");
int lagAmount = SDLNet_Read32(data.ptr);
int delayAmount = SDLNet_Read32(data.ptr + 4);
numberOfPlayers = SDLNet_Read32(data.ptr+8);
lag = lagAmount;
writefln("Lag = %d", lag);
SDL_Delay(delayAmount);
// And finally, we're done, and the game can begin.
waiting = false;
return;
}
}
SDLNet_SocketSet socketset;
int msPerTick;
int numberOfPlayers;
int numberOfLocalPlayers;
int firstLocalPlayer;
public:
int getNumberOfPlayers(){ // good for main looping and controls and such
return numberOfPlayers;
}
// returns < 0 if the player is not local
int getLocalPlayerNumber(int absolutePlayerNumber){ // useful for split screening
if(absolutePlayerNumber >= firstLocalPlayer && absolutePlayerNumber < firstLocalPlayer + numberOfLocalPlayers)
return absolutePlayerNumber - firstLocalPlayer;
return -1;
}
int getNumberOfLocalPlayers(){ // only useful for deciding how to split the screen
return numberOfLocalPlayers;
}
int getFirstLocalPlayerNumber(){
return firstLocalPlayer;
}
this(int graphics = NoVideo, bool sound = false, int timerClick = 0, int numOfLocalPlayers = 1, in char[] network = null){
bool joystick = true;
int init = 0;
numberOfPlayers = numberOfLocalPlayers = numOfLocalPlayers;
if(graphics)
init |= SDL_INIT_VIDEO;
if(timerClick)
init |= SDL_INIT_TIMER;
if(sound)
init |= SDL_INIT_AUDIO;
if(joystick)
init |= SDL_INIT_JOYSTICK;
msPerTick = timerClick;
if(SDL_Init(init) == -1 ){
throw new Exception("SDL_Init");
}
scope(failure) SDL_Quit();
// SDL_WM_SetIcon(SDL_LoadBMP("icon.bmp"), NULL);
if(network !is null){
if(SDLNet_Init() < 0)
throw new Exception("SDLNet_Init");
scope(failure) SDLNet_Quit();
if(network == "SERVER")
beginServing();
else
connectTo(network);
net = true;
}
switch(graphics & ~32){
case NoVideo:
screen = null;
break;
case Video1024x768:
screen = new Screen(1024, 768, 24, true, (graphics & 32) ? true : false);
break;
case Video640x480:
screen = new Screen(640, 480);
break;
case Video800x600:
screen = new Screen(800, 600);
break;
case Video512x512:
screen = new Screen(512, 512);
break;
case Video320x200:
screen = new Screen(320, 200);
break;
default:
throw new Exception("Invalid screen type");
}
scope(failure) delete screen;
if(timerClick)
SDL_AddTimer(timerClick, &tcallback, null);
if(sound)
audio = new Audio;
else
audio = new Audio(false);
scope(failure) delete audio;
if(joystick && SDL_NumJoysticks() > 0){
SDL_JoystickEventState(SDL_ENABLE);
for(int a = 0; a < SDL_NumJoysticks(); a++)
joyStick[a] = SDL_JoystickOpen(a);
}
else
joyStick[0] = null;
scope(failure){ for(int a = 0; a < 16; a++) if(joyStick[a]) SDL_JoystickClose(joyStick[a]); }
//SDL_ShowCursor(SDL_DISABLE); // FIXME: make this a call
//***********************************************************************
// FIXME: it should load controller maps from a config file
// My playstation controller
for(int a = 0; a < 13; a++)
mapJoystickKeyToButton(a, cast(Buttons) a, 0, firstLocalPlayer);
leftStickXAxis[0] = 0;
leftStickYAxis[0] = 1;
dpadXAxis[0] = 4;
dpadYAxis[0] = 5;
rightStickXAxis[0] = 2;
rightStickYAxis[0] = 3;
leftTriggerAxis[0] = -1;
rightTriggerAxis[0] = -1;
// 360 controllers
for(int b = 1; b < 16; b++){
mapJoystickKeyToButton(1, circle, b, firstLocalPlayer + b);
mapJoystickKeyToButton(0, cross, b, firstLocalPlayer + b);
mapJoystickKeyToButton(4, square, b, firstLocalPlayer + b);
mapJoystickKeyToButton(3, triangle, b, firstLocalPlayer + b);
mapJoystickKeyToButton(16, select, b, firstLocalPlayer + b);
mapJoystickKeyToButton(8, start, b, firstLocalPlayer + b);
mapJoystickKeyToButton(10, L3, b, firstLocalPlayer + b);
mapJoystickKeyToButton(11, R3, b, firstLocalPlayer + b);
mapJoystickKeyToButton(6, L1, b, firstLocalPlayer + b);
mapJoystickKeyToButton(7, R1, b, firstLocalPlayer + b);
mapJoystickKeyToButton(9, special, b, firstLocalPlayer + b);
mapJoystickKeyToButton(15, left, b, firstLocalPlayer + b);
mapJoystickKeyToButton(12, up, b, firstLocalPlayer + b);
mapJoystickKeyToButton(13, right, b, firstLocalPlayer + b);
mapJoystickKeyToButton(14, down, b, firstLocalPlayer + b);
leftStickXAxis[b] = 0;
dpadXAxis[b] = -1;
leftStickYAxis[b] = 1;
dpadYAxis[b] = -1;
rightStickXAxis[b] = 4;
rightStickYAxis[b] = 3;
leftTriggerAxis[b] = 2;
rightTriggerAxis[b] = 5;
}
// Some sane keyboard defaults
keyboardMap['s'] = InputMap(circle, firstLocalPlayer);
keyboardMap['x'] = InputMap(cross, firstLocalPlayer);
keyboardMap['w'] = InputMap(triangle, firstLocalPlayer);
keyboardMap['a'] = InputMap(square, firstLocalPlayer);
keyboardMap[' '] = InputMap(circle, firstLocalPlayer);
keyboardMap['d'] = InputMap(L1, firstLocalPlayer);
keyboardMap['f'] = InputMap(R1, firstLocalPlayer);
keyboardMap['e'] = InputMap(L2, firstLocalPlayer);
keyboardMap['r'] = InputMap(R2, firstLocalPlayer);
keyboardMap['c'] = InputMap(L3, firstLocalPlayer);
keyboardMap['v'] = InputMap(R3, firstLocalPlayer);
keyboardMap['['] = InputMap(start, firstLocalPlayer);
keyboardMap[']'] = InputMap(select, firstLocalPlayer);
keyboardMap['='] = InputMap(special, firstLocalPlayer);
keyboardMap[SDLK_UP] = InputMap(up, firstLocalPlayer);
keyboardMap[SDLK_DOWN] = InputMap(down, firstLocalPlayer);
keyboardMap[SDLK_LEFT] = InputMap(left, firstLocalPlayer);
keyboardMap[SDLK_RIGHT] = InputMap(right, firstLocalPlayer);
keyboardMap['k'] = InputMap(up, firstLocalPlayer);
keyboardMap['j'] = InputMap(down, firstLocalPlayer);
keyboardMap['h'] = InputMap(left, firstLocalPlayer);
keyboardMap['l'] = InputMap(right, firstLocalPlayer);
}
void moveMouse(Point pos){
SDL_WarpMouse(cast(ushort) pos.x, cast(ushort) pos.y);
}
bool capturedInput = false;
void captureInput(){
if(capturedInput)
return;
SDL_WM_GrabInput(1);
capturedInput = true;
}
void unCaptureInput(){
if(!capturedInput)
return;
SDL_WM_GrabInput(0);
capturedInput = false;
}
~this(){
unCaptureInput();
if(net){
SDLNet_FreeSocketSet(socketset);
SDLNet_Quit();
}
for(int a = 0; a < 16; a++)
if(joyStick[a])
SDL_JoystickClose(joyStick[a]);
delete audio;
delete screen;
foreach(a; objs)
if(a !is null)
delete a;
SDL_Quit();
}
void run(){
eventLoop();
}
void setTitle(in char[] title){
SDL_WM_SetCaption((title~"\0").ptr, null);
}
bool buttonWasPressed(Buttons button, int which = 0){
if(!buttonsChecked[button][which] && buttonsDown[button][which]){
buttonsChecked[button][which] = true;
return true;
}
return false;
}
bool buttonIsDown(Buttons button, int which = 0){
if(button < NUM_BUTTONS && button >= 0)
return buttonsDown[button][which];
return false;
}
bool keyWasPressed(int button){
if(button < 400 && button >= 0)
if(!keysChecked[button] && keysDown[button]){
keysChecked[button] = true;
return true;
}
return false;
}
bool keyIsDown(int button){
if(button < 400 && button >= 0)
return keysDown[button];
assert(0);
}
int getStickX(int stick, int which = 0){
if( stick >= 0 && stick < 2)
return stickX[stick][which];
else
return 0;
}
int getStickY(int stick, int which = 0){
if( stick >= 0 && stick < 2)
return stickY[stick][which];
else
return 0;
}
int getMouseX(){
return mouseX;
}
int getMouseY(){
return mouseY;
}
int getMouseChangeX(){
int a = mousedx;
mousedx = 0;
return a;
}
int getMouseChangeY(){
int a = mousedy;
mousedy = 0;
return a;
}
bool mouseHasMoved(){
return (getMouseChangeY != 0 || getMouseChangeX != 0);
}
bool mouseButtonWasPressed(int button){
if(!mouseButtonsChecked[button] && mouseButtonsDown[button]){
mouseButtonsChecked[button] = true;
return true;
}
return false;
}
bool mouseButtonIsDown(int button){
if(button < 8 && button >= 0)
return mouseButtonsDown[button];
return false;
}
Point mouseLocation(){
return XY(mouseX, mouseY);
}
void quit(){
wantToQuit = true;
}
bool isAltDown(){
return (SDL_GetModState() & KMOD_ALT) ? true : false;
}
bool isControlDown(){
return (SDL_GetModState() & KMOD_CTRL) ? true : false;
}
bool isShiftDown(){
return (SDL_GetModState() & KMOD_SHIFT) ? true : false;
}
protected:
const int BUTTONDOWN = 0;
const int BUTTONUP = 1;
const int MOTION = 2;
void keyEvent(int type, int keyCode, int character, int modifiers){
defaultKeyEvent(type, keyCode, character, modifiers);
}
void defaultKeyEvent(int type, int keyCode, int character, int modifiers){
if(character == 'q' || keyCode == 'q')
quit();
if(type == BUTTONUP && keyCode == SDLK_F3){
if(capturedInput)
unCaptureInput();
else
captureInput();
}
}
void mouseEvent(int type, int x, int y, int xrel, int yrel, int button, int flags){
defaultMouseEvent(type, x, y, xrel, yrel, button, flags);
}
final void defaultMouseEvent(int type, int x, int y, int xrel, int yrel, int button, int flags){
}
void joystickEvent(int type, int whichStick, int button, int state){
defaultJoystickEvent(type, whichStick, button, state);
}
final void defaultJoystickEvent(int type, int whichStick, int button, int state){
}
bool quitEvent(){
return true;
}
void timerEvent(){
// Need to add network receives and the lag timer loops
if(net)
getNetworkControllerData();
// do we actually need to lag here? hmmm.....
globalTimer++;
foreach(a; objs){//copy){
if(a is null)
continue;
a.frame();
}
if(lag)
updateControllers();
}
public Screen screen;
public Audio audio;
private:
bool net;
SDL_Joystick*[16] joyStick;
struct InputMap{
int button; // or direction
int which; // which player
}
InputMap[int] keyboardMap;
InputMap[int][16] joystickMap; // joystickMap[which][button] = translated val
int[16] leftStickXAxis;
int[16] dpadXAxis;
int[16] leftStickYAxis;
int[16] dpadYAxis;
int[16] rightStickXAxis;
int[16] rightStickYAxis;
int[16] leftTriggerAxis;
int[16] rightTriggerAxis;
bool[400] keysDown;
bool[400] keysChecked;
bool wantToQuit;
bool[16][NUM_BUTTONS] buttonsDown;
bool[16][NUM_BUTTONS] buttonsChecked;
const int LAG_QUEUE_SIZE = 10;
// This lag is used for network games. It sends you old data until the lag time is up,
// to try and keep all the players synchronized.
int[LAG_QUEUE_SIZE][16][NUM_BUTTONS] buttonLagRemaining;
// This way we can queue up activities happening while the lag is waiting
int[16][NUM_BUTTONS] buttonLagQueueStart;
int[16][NUM_BUTTONS] buttonLagQueueEnd;
int[16][NUM_BUTTONS] buttonLagQueueLength;
// These store what the state was before the lag began; it is what is returned while
// waiting on the lag to complete
bool[LAG_QUEUE_SIZE][16][NUM_BUTTONS] lagbuttonsDown;
int[16][3] stickX;
int[16][3] stickY;
bool[8] mouseButtonsDown;
bool[8] mouseButtonsChecked;
const int LEFT = SDL_BUTTON_LEFT;//1;
const int MIDDLE = SDL_BUTTON_MIDDLE;//2;
const int RIGHT = SDL_BUTTON_RIGHT;//3;
const int SCROLL_UP = 4;
const int SCROLL_DOWN = 5;
int mouseX;
int mouseY;
int mousedx;
int mousedy;
bool altDown;
bool controlDown;
bool shiftDown;
void mapJoystickKeyToButton(int a, Buttons b, int whichJoystick, int whichPlayer){
if(b > NUM_BUTTONS)
return;
joystickMap[whichJoystick][a] = InputMap(cast(int) b, whichPlayer);
}
/*
How does this work?
when and local are the fancy ones.
Maybe when should always be globalTimer + 1. This way, you have a local wait of 1 frame
and the remote ones are set to go off one frame later, which gives them time to get down the wire.
I think that works.
*/
uint lag = 0; // should not be > 10 XXX
void getNetworkControllerData(){
int type, when, which, button;
if(!net) return;
int n = SDLNet_CheckSockets(socketset, 0); // timeout of 1000 might be good too
if(n < 0)
throw new Exception("Check sockets");
if(n == 0)
return;
if(isServer){
for(int a = 0; a < numberOfClients; a++){
if(SDLNet_SocketReady(clients[a].sock)){
byte[16] data;
if(SDLNet_TCP_Recv(clients[a].sock, data.ptr, 16) <= 0){
throw new Exception("someone closed");
}
type = SDLNet_Read32(data.ptr);
when = SDLNet_Read32(data.ptr+4);
which = SDLNet_Read32(data.ptr+8);
button = SDLNet_Read32(data.ptr+12);
changeButtonState(cast(Buttons) button, type == 0 ? true : false, which, when);
// don't forget to forward the data to everyone else
for(int b = 0; b< numberOfClients; b++)
if(b != a)
if(SDLNet_TCP_Send(clients[b].sock, data.ptr, 16) < 16)
throw new Exception("network send failure");
}
}
} else if(SDLNet_SocketReady(clientsock)) {
byte[16] data;
if(SDLNet_TCP_Recv(clientsock, data.ptr, 16) <= 0){
throw new Exception("connection closed");
}
type = SDLNet_Read32(data.ptr);
when = SDLNet_Read32(data.ptr+4);
which = SDLNet_Read32(data.ptr+8);
button = SDLNet_Read32(data.ptr+12);
changeButtonState(cast(Buttons) button, type == 0 ? true : false, which, when);
}
}
void changeButtonState(Buttons button, bool type, int which, uint when, bool sendToNet = false){
if(when <= lag)
return;
if(when > globalTimer){
lagbuttonsDown[button][which][buttonLagQueueEnd[button][which]] = type;
buttonLagRemaining[button][which][buttonLagQueueEnd[button][which]] = when - globalTimer;
buttonLagQueueLength[button][which]++;
buttonLagQueueEnd[button][which]++;
if(buttonLagQueueEnd[button][which] == LAG_QUEUE_SIZE)
buttonLagQueueEnd[button][which] = 0;
} else {
if(when < globalTimer)
throw new Exception(immutableString("Impossible control timing"));// " ~ convToString(when) ~ " @ " ~ convToString(globalTimer)));
buttonsDown[button][which] = type;
buttonsChecked[button][which] = false;
}
if(net && sendToNet){
byte[16] data;
SDLNet_Write32(type ? 0 : 1, data.ptr);
SDLNet_Write32(when, data.ptr+4);
SDLNet_Write32(which, data.ptr+8);
SDLNet_Write32(button, data.ptr+12);
if(isServer){
for(int a = 0; a< numberOfClients; a++)
if(SDLNet_TCP_Send(clients[a].sock, data.ptr, 16) < 16)