//increment ctr and send button state, id and ctr
void sendButton(uint8_t button)
{
struct packet p;
p.len=sizeof(p);
p.protocol='G'; // Proto
p.command='B';
p.id= id;
p.ctr= ++ctr;
p.c.button.button=button;
//lcdClear();
//lcdPrint("Key:"); lcdPrintInt(buf[2]); lcdNl();
if( flags & FLAGS_SHORT_PACKET )
nrf_snd_pkt_crc(16,(uint8_t*)&p);
else
nrf_snd_pkt_crc(sizeof(p),(uint8_t*)&p);
}
void processNickRequest( struct nickrequest *nq)
{
struct packet p;
p.len=sizeof(p);
p.protocol='G'; // Proto
p.command='n';
p.id= id;
p.ctr= ++ctr;
p.c.nick.flags = 0;
uint8_t *nick = GLOBAL(nickname);
strcpy(p.c.nick.nick, nick);
nrf_snd_pkt_crc(sizeof(p),(uint8_t*)&p);
}
uint8_t joinGame()
{
int i;
struct packet p;
struct packet ack;
memset((void*)&p, 0, sizeof(p));
memset((void*)&ack, 0, sizeof(ack));
p.len=sizeof(p);
p.protocol='G';
p.command='J';
p.id= id;
p.ctr= ++ctr;
p.c.join.gameId=gameId;
lcdPrintln("Joining game");
lcdRefresh();
for(i=0; i<10; i++){
nrf_snd_pkt_crc(sizeof(p),(uint8_t*)&p);
int len = nrf_rcv_pkt_time(30,sizeof(ack),(uint8_t*)&ack);
if( len==sizeof(ack) ){
if( (ack.len==32) && (ack.protocol=='G') && ack.command=='a' ){ //check sanity, protocol
if( ack.id == id && ack.ctr == ctr ){
if( ack.c.ack.flags & FLAGS_ACK_JOINOK ){
lcdPrintln("Join OK");
lcdRefresh();
return 1;
}else{
lcdPrintln("Join rejected");
lcdRefresh();
getInputWait();
getInputWaitRelease();
return 0;
}
}
}
}
delayms(70);
}
lcdPrintln("timeout :(");
lcdRefresh();
getInputWait();
getInputWaitRelease();
return 0;
}
void processPacket(struct packet *p)
{
if ((p->len==32) && (p->protocol=='G') && (p->id == id || p->id == 0) ){ //check sanity, protocol, id
if (p->command=='T'){
struct packet ack;
ack.len=sizeof(p);
ack.protocol='G';
ack.command='a';
ack.id= id;
ack.ctr= p->ctr;
ack.c.ack.flags = 0;
nrf_snd_pkt_crc(sizeof(ack),(uint8_t*)&ack);
processText(&(p->c.text));
}
else if (p->command=='N'){
processNickRequest(&(p->c.nickrequest));
}
else if (p->command=='A'){
processAnnounce(&(p->c.announce));
}
}
}
void handle_packet(struct packet *p){
switch(p->type){
case PKT_ANNOUNCE:
if(mode == MODE_CLIENT){
if(!started){
gameid = p->gameid;
struct packet join;
memset((void*)&join, 0, sizeof(join));
join.gameid = gameid;
join.type = PKT_JOIN;
memcpy(join.c.join.nick, GLOBAL(nickname), 16);
join.seq = p->seq+1;
nrf_snd_pkt_crc(sizeof(join), (uint8_t *)&join);
player_joined = 1;
}
}
break;
case PKT_JOIN:
if(mode == MODE_SERVER){
if(!started){
if(!player_joined){
started = 1;
lcdClear();
lcdPrintln("Player joined");
lcdPrintln((char *)&p->c.join.nick);
lcdRefresh();
struct packet ack;
memset((void*)&ack, 0, sizeof(ack));
ack.gameid = gameid;
ack.type = PKT_ACK;
//memcpy(ack.c.ack.nick, GLOBAL(nickname), 16);
ack.seq = p->seq+1;
nrf_snd_pkt_crc(sizeof(ack), (uint8_t *)&ack);
player_joined = 1;
delayms(1000);
init();
struct packet state;
memset((void*)&state, 0, sizeof(state));
state.gameid = gameid;
state.type = PKT_GAMESTATE;
state.c.state.score1 = player1.score;
state.c.state.score2 = player2.score;
state.c.state.pad1 = player1.paddle_pos;
state.c.state.pad2 = player2.paddle_pos;
state.c.state.ball_x = ball1.x;
state.c.state.ball_y = ball1.y;
state.seq = p->seq+2;
nrf_snd_pkt_crc(sizeof(state), (uint8_t *)&state);
}
}
}
break;
case PKT_ACK:
if(mode == MODE_CLIENT){
if(!started){
started = 1;
lcdClear();
lcdPrintln("Joined!");
//lcdPrintln((char *)&p->c.announce.nick);
init();
lcdRefresh();
}
}
break;
case PKT_GAMESTATE:
if(mode == MODE_CLIENT){
if(started){
player1.score = p->c.state.score1;
player2.score = p->c.state.score2;
player1.paddle_pos = p->c.state.pad1;
player2.paddle_pos = p->c.state.pad2;
ball1.x = p->c.state.ball_x;
ball1.y = p->c.state.ball_y;
if(!check_end()){
lcdClear();
print_score();
draw_paddles();
just_draw_ball();
lcdDisplay();
struct packet move;
memset((void*)&move, 0, sizeof(move));
move.gameid = gameid;
move.type = PKT_MOVEMENT;
move.c.movement.dir = next_move;
move.seq = p->seq+1;
delayms(50);
nrf_snd_pkt_crc(sizeof(move), (uint8_t *)&move);
latest_packet = move;
next_move = DIR_STAY;
receive = 1;
}
}
}
break;
case PKT_MOVEMENT:
if(mode == MODE_SERVER){
if(started){
if(next_move != DIR_LEFT) // Only let valid keys through
move_player(&player1, next_move);
if(p->c.movement.dir != DIR_RIGHT) // Only let valid keys through
move_player(&player2, p->c.movement.dir);
check_collision_players();
draw_ball();
lcdClear();
print_score();
//check_collision_player(&player1);
//check_collision_player(&player2);
draw_paddles();
just_draw_ball();
lcdDisplay();
struct packet state;
memset((void*)&state, 0, sizeof(state));
state.gameid = gameid;
state.type = PKT_GAMESTATE;
state.c.state.score1 = player1.score;
state.c.state.score2 = player2.score;
state.c.state.pad1 = player1.paddle_pos;
state.c.state.pad2 = player2.paddle_pos;
state.c.state.ball_x = ball1.x;
state.c.state.ball_y = ball1.y;
state.seq = p->seq+1;
delayms(50);
nrf_snd_pkt_crc(sizeof(state), (uint8_t *)&state);
latest_packet = state;
next_move = DIR_STAY;
receive = 1;
check_end();
}
}
break;
case PKT_EXIT:
if(started){
if(mode == MODE_CLIENT)
player2.score = MAX_POINTS;
else
player1.score = MAX_POINTS;
check_end();
}
break;
}
}
void main(void){
started = 0;
receive = 1;
next_move = DIR_STAY;
mode = MODE_INIT;
player_joined = 0;
lcdClear();
lcdPrintln("Up: server");
lcdPrintln("Down: client");
lcdPrintln("Enter: exit");
lcdRefresh();
int8_t priv = GLOBAL(privacy);
GLOBAL(privacy) = 3;
uint8_t btn;
uint8_t cycles_wait;
cycles_wait = 0;
struct packet announce;
do{
btn = getInputRaw();
if(mode == MODE_INIT){
if(btn == BTN_UP){
startServer();
} else {
if(btn == BTN_DOWN){
startClient();
}
}
}
if(!started){
if(mode == MODE_SERVER && !player_joined){
memset((void*)&announce, 0, sizeof(announce));
announce.gameid = gameid;
announce.type = PKT_ANNOUNCE;
memcpy(announce.c.announce.nick, GLOBAL(nickname), 16);
announce.seq = 0;
nrf_snd_pkt_crc(sizeof(announce), (uint8_t *)&announce);
struct packet p;
if(nrf_rcv_pkt_time(1000, sizeof(p), (uint8_t *)&p) == sizeof(p)){
handle_packet(&p);
}
} else if (mode == MODE_CLIENT){
struct packet p;
if(nrf_rcv_pkt_time(100, sizeof(p), (uint8_t *)&p) == sizeof(p)){
handle_packet(&p);
}
}
} else {
if(receive){
struct packet p;
if(nrf_rcv_pkt_time(50, sizeof(p), (uint8_t *)&p) == sizeof(p)){
cycles_wait = 0;
handle_packet(&p);
} else {
cycles_wait++;
}
if(cycles_wait >= 3){
nrf_snd_pkt_crc(sizeof(latest_packet), (uint8_t *)&latest_packet);
cycles_wait = 0;
}
} else {
delayms(50);
}
next_move = btn;
}
}while(btn != BTN_ENTER);
struct packet p;
p.type = PKT_EXIT;
for(uint8_t i = 0; i < 3; i++){
delayms(50);
nrf_snd_pkt_crc(sizeof(p), (uint8_t *)&p);
}
GLOBAL(privacy) = priv;
}