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typedef enum {
K↑,
K↺,
K↻,
Kfire,
Khyper,
Ksay,
Kquit,
NKEYOPS
} KeyOp;
typedef enum {
NEEDLE,
WEDGE
} Kind;
typedef enum {
NCSDisconnected,
NCSConnecting,
NCSConnected
} NCState;
enum {
SCRW = 640,
SCRH = 480,
SCRWB = SCRW+2*Borderwidth,
SCRHB = SCRH+2*Borderwidth
};
enum {
NChi = 10, /* C wants to connect */
NShi, /* S accepts. sends P and G for DHX */
NCdhx = 12, /* C shares pubkey */
NSdhx, /* S shares pubkey */
NCnudge = 16,
NSnudge, /* check the pulse of the line */
NCinput = 20, /* C sends player input state */
NSsimstate, /* S sends current simulation state */
NCbuhbye = 30,
NSbuhbye,
NSerror = 66 /* report an error */
};
enum {
ProtocolID = 0x5753554d, /* MUSW */
Framehdrsize = 4+1+4+4+2+MD5dlen,
MTU = 1024,
ConnTimeout = 10000 /* in ms */
};
enum {
THRUST = 10
};
typedef struct VModel VModel;
typedef struct Sprite Sprite;
typedef struct Keymap Keymap;
typedef struct State State;
typedef struct Particle Particle;
typedef struct Bullet Bullet;
typedef struct Ship Ship;
typedef struct Star Star;
typedef struct Universe Universe;
typedef struct Derivative Derivative;
typedef struct Frame Frame;
typedef struct DHparams DHparams;
typedef struct NetConn NetConn;
typedef struct Player Player;
typedef struct Playerq Playerq;
typedef struct Party Party;
/*
* Vector model - made out of lines and curves
*/
struct VModel
{
Point2 *pts;
usize npts;
/* WIP
* l(ine) → takes 2 points
* c(urve) → takes 3 points
*/
char *strokefmt;
};
struct Sprite
{
Image *sheet;
Point sp;
Rectangle r;
int nframes;
int curframe;
ulong period;
ulong elapsed;
void (*step)(Sprite*, ulong);
void (*draw)(Sprite*, Image*, Point);
};
struct Keymap
{
Rune key;
KeyOp op;
};
struct State
{
char *name;
State *(*δ)(State*, void*); /* transition fn */
};
struct Particle
{
Point2 p, v;
double θ, ω;
double mass; /* in kg */
};
struct Bullet
{
Particle;
double ttl; /* in s */
int fired; /* XXX: |v| != 0 */
};
struct Ship
{
Particle;
Kind kind;
int fuel;
Bullet rounds[10];
VModel *mdl;
Matrix mdlxform;
void (*forward)(Ship*, double);
void (*rotate)(Ship*, int, double);
void (*hyperjump)(Ship*);
void (*fire)(Ship*);
};
struct Star
{
Particle;
Sprite *spr;
};
struct Universe
{
Ship ships[2];
Star star;
double t, timeacc;
void (*step)(Universe*, double);
void (*collide)(Universe*);
void (*reset)(Universe*);
};
struct Derivative
{
Point2 dx; /* v */
Point2 dv; /* a */
};
struct Frame
{
Udphdr udp;
u32int id; /* ProtocolID */
u8int type;
u32int seq;
u32int ack;
u16int len;
uchar sig[MD5dlen];
uchar data[];
};
struct DHparams
{
ulong p, g, pub, sec, priv;
};
struct NetConn
{
Udphdr udp;
DHparams dh;
NCState state;
u32int lastseq;
u32int lastack;
ulong lastrecvts; /* last time a packet was received (in ms) */
ulong lastnudgets; /* last time a nudge was sent (in ms) */
Player *player;
};
struct Player
{
char *name;
NetConn *conn;
ulong oldkdown, kdown;
Player *next;
};
struct Playerq
{
Player *head, *tail;
usize len;
void (*put)(Playerq*, Player*);
Player *(*get)(Playerq*);
void (*del)(Playerq*, Player*);
};
struct Party
{
Player *players[2]; /* the needle and the wedge */
Universe *u;
Party *prev, *next;
};
#pragma varargck type "Φ" Frame*
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