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crashtest-r0ket/firmware/l0dable/mp0ng.c

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#include <sysinit.h>
#include <string.h>
#include "basic/basic.h"
#include "basic/config.h"
#include "lcd/display.h"
#include "lcd/print.h"
#include "funk/nrf24l01p.h"
#include "usetable.h"
#define RESX 96
#define RESY 68
#define CHANNEL 82
#define ANNOUNCEMENT_MAC "MP0NG"
#define MAX_POINTS 10
#define BALL_SIZE 6
#define PADDLE_OFFSET 10
#define PADDLE_WIDTH 3
#define PADDLE_HEIGHT 20
#define OFFSET_L PADDLE_OFFSET
#define OFFSET_R RESX - PADDLE_WIDTH - PADDLE_OFFSET
// Modes the program can be in
#define MODE_SERVER 1
#define MODE_INIT 0
#define MODE_CLIENT 2
// Packet types
#define PKT_ANNOUNCE 'a'
#define PKT_JOIN 'j'
#define PKT_ACK 'A'
#define PKT_GAMESTATE 's'
#define PKT_MOVEMENT 'm'
#define PKT_EXIT 'e'
// Directions
#define DIR_STAY BTN_NONE
#define DIR_UP BTN_UP
#define DIR_RIGHT BTN_RIGHT
#define DIR_DOWN BTN_DOWN
#define DIR_LEFT BTN_LEFT
struct packet{
uint16_t gameid; // a (hopefully) unique number identifiyng the game
uint8_t seq; // sequential number of packet - to be increased for every packet sent
uint8_t type; // the type of the packet - defined above
union content{
struct announce{
uint8_t gameid; //again the game id - needet for saving open games as announcement structs
uint8_t nick[16]; //nickname of the user offering the game
uint8_t mac[5]; //the mac to use for transmitting the game packets
uint8_t channel; //the channel on which the game packets will be transferred
uint8_t reserved[3];//array to pad the rest of the unuses bytes in the packet
}__attribute__((packed)) announce;
struct join{
uint8_t nick[16];
uint8_t reserved[10];
}__attribute__((packed)) join;
struct ack{
uint8_t reserved[26];
}__attribute__((packed)) ack;
struct gamestate{
uint8_t pad1; //Position of the paddle for player 1
uint8_t pad2; //same for p2
uint8_t ball_x; //x positoin of the ball
uint8_t ball_y; //y position of the ball
uint8_t score1; //points for player 1
uint8_t score2; //same for p2
uint8_t reserved[20];
}__attribute__((packed)) state;
struct movement{
uint8_t dir; //direction in which th player wants to move - defined above
uint8_t reserved[25];
}__attribute__((packed)) movement;
struct exit{
uint8_t reserved[26];
}__attribute__((packed)) exit;
}__attribute__((packed)) c;
uint16_t crc; //checksum of the packet, automatically generated and verfied by the library
}__attribute__((packed));
struct player_t{
int8_t paddle_pos;
int8_t score;
bool second;
};
struct ball_t{
int8_t x;
int8_t y;
int8_t speed_x;
int8_t speed_y;
//bool moving;
int8_t player_has_ball;
};
struct ball_t ball1;
struct player_t player1;
struct player_t player2;
void print_score();
void move_player(struct player_t *player, uint8_t dir);
void draw_paddles(void);
void draw_ball();
void shoot_ball();
void just_draw_ball();
void check_border();
//void check_collision_player(struct player_t *player);
void check_collision_players();
void init();
uint16_t gameid;
uint8_t next_move;
uint8_t mode;
uint8_t started;
uint8_t receive;
uint8_t player_joined;
struct packet latest_packet;
void startServer(void);
void startClient(void);
void handle_packet(struct packet *p);
uint8_t check_end(void);
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;
}
void configNrf(){
struct NRF_CFG config;
config.nrmacs = 1;
config.maclen[0] = 32;
config.channel = CHANNEL;
memcpy(config.mac0, ANNOUNCEMENT_MAC, 5);
memcpy(config.txmac, ANNOUNCEMENT_MAC, 5);
nrf_config_set(&config);
nrf_set_strength(3);
}
void startServer(void){
mode = MODE_SERVER;
lcdClear();
lcdPrintln("Server started");
lcdRefresh();
configNrf();
}
void startClient(void){
mode = MODE_CLIENT;
lcdClear();
lcdPrintln("Client started");
lcdRefresh();
configNrf();
receive = 1;
}
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 init()
{
// init ball
ball1.x = 15;
ball1.y = 15;
ball1.speed_x = 5;
ball1.speed_y = 2;
//ball1.moving = false;
ball1.player_has_ball = 1;
// init player1
player1.paddle_pos = 10;
player1.second = false;
player1.score = 0;
// init player2
player2.paddle_pos = 10;
player2.second = true;
player2.score = 0;
}
void print_score(void)
{
lcdPrint(" ");
lcdPrintInt(player1.score);
lcdPrint(" ");
lcdPrintInt(player2.score);
}
void move_player(struct player_t *player, uint8_t dir)
{
if(dir == DIR_UP && player->paddle_pos > 0 )
{
player->paddle_pos-=3;
}
if(dir == DIR_DOWN && player->paddle_pos < (RESY - PADDLE_HEIGHT))
{
player->paddle_pos+=3;
}
if(dir == DIR_RIGHT && ball1.player_has_ball == 1){
//ball1.moving = true;
ball1.player_has_ball = 0;
}
if(dir == DIR_LEFT && ball1.player_has_ball == 2){
//ball1.moving = true;
ball1.player_has_ball = 0;
}
}
void draw_paddles(void)
{
for(int8_t i = 0; i < PADDLE_HEIGHT; i++)
{
for(int8_t j = 0; j < PADDLE_WIDTH; j++)
{
lcdSetPixel(OFFSET_L - j, i+player1.paddle_pos, 1);
lcdSetPixel(OFFSET_R - j, i+player2.paddle_pos, 1);
}
}
}
void draw_ball(void)
{
//if(ball1.moving == true)
if(ball1.player_has_ball == 0)
{
ball1.x += ball1.speed_x;
ball1.y += ball1.speed_y;
check_border();
}
else
{
if(ball1.player_has_ball == 1)
{
ball1.y = player1.paddle_pos + PADDLE_HEIGHT/2 - BALL_SIZE/2;
ball1.x = OFFSET_L + 3;
}
else
{
ball1.y = player2.paddle_pos + PADDLE_HEIGHT/2 - BALL_SIZE/2;
ball1.x = OFFSET_R - 3 - BALL_SIZE;
if(ball1.speed_x > 0) {
ball1.speed_x = -ball1.speed_x;
}
}
}
}
void just_draw_ball(void){
for(int8_t i = 0; i < BALL_SIZE; i++)
{
for(int8_t j = 0; j < BALL_SIZE; j++)
{
lcdSetPixel(ball1.x + j, ball1.y + i, 1);
}
}
}
void check_collision_players(void) {
if (ball1.player_has_ball == 0) {
//Player 2
if(ball1.x >= (OFFSET_R - PADDLE_WIDTH - 5) ) {
if(ball1.y + BALL_SIZE > player2.paddle_pos && ball1.y < (player2.paddle_pos + PADDLE_HEIGHT) ) {
ball1.speed_x = - ball1.speed_x;
} else {
ball1.speed_x = - ball1.speed_x;
player1.score++;
//ball1.moving = false;
ball1.player_has_ball = 2;
}
}
//Player 1
if(ball1.x < (OFFSET_L + PADDLE_WIDTH) ) {
if(ball1.y + BALL_SIZE > player1.paddle_pos && ball1.y < (player1.paddle_pos + PADDLE_HEIGHT) ) {
ball1.speed_x = - ball1.speed_x;
} else {
ball1.speed_x = - ball1.speed_x;
player2.score++;
//ball1.moving=false;
ball1.player_has_ball = 1;
}
}
}
}
uint8_t check_end(void){
if(player1.score >= MAX_POINTS || player2.score >= MAX_POINTS){
receive = 0;
lcdClear();
lcdNl();
lcdPrintln(" GAME OVER");
lcdNl();
lcdPrint(" Player ");
lcdPrintInt(2 - (player1.score > player2.score));
lcdPrintln(" won");
lcdRefresh();
return 1;
}
return 0;
}
void check_border() {
if(ball1.speed_y < 0) {
if (ball1.y < 0) {
ball1.speed_y = - ball1.speed_y;
}
} else if (ball1.speed_y > 0) {
if(ball1.y > (RESY - BALL_SIZE) ) {
ball1.speed_y = - ball1.speed_y;
}
}
}
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