Cube  Diff

#define LARGEST_FACTOR 11 // 10 is already insane
#define SOLID(x) ((x)->type == SOLID)
#define MINBORD 2 // 2 cubes from the edge of the world are always solid
#define OUTBORD(x, y)                                                          \
	((x) < MINBORD || (y) < MINBORD || (x) >= ssize - MINBORD ||           \
	    (y) >= ssize - MINBORD)

struct vec {
	float x, y, z;
};
struct block {
	int x, y, xs, ys;
};
struct mapmodelinfo {
	int rad, h, zoff, snap;
	const char *name;
};

	GUN_SLIMEBALL,
	GUN_BITE,
	NUMGUNS
};

struct dynent // players & monsters
{
	vec o, vel;             // origin, velocity
	float yaw, pitch, roll; // used as vec in one place
	float maxspeed;         // cubes per second, 24 for player
	bool outsidemap;        // from his eyes
	bool inwater;
	bool onfloor, jumpnext;
	int move, strafe;
	bool k_left, k_right, k_up, k_down; // see input code
	int timeinair;                      // used for fake gravity

	int monsterstate;     // one of M_* below, M_NONE means human
	int mtype;            // see monster.cpp
	dynent *enemy;        // monster wants to kill this entity
	float targetyaw;      // monster wants to look in this direction
	bool blocked, moving; // used by physics to signal ai
	int trigger; // millis at which transition to another monsterstate takes
	             // place
	vec attacktarget; // delayed attacks
	int anger;        // how many times already hit by fellow monster
	string name, team;
};

#define SAVEGAMEVERSION                                                        \
	4 // bump if dynent/netprotocol changes or any other savegame/demo data

enum { A_BLUE, A_GREEN, A_YELLOW }; // armour types... take 20/40/60 % off

extern int sfactor, ssize;     // ssize = 2^sfactor
extern int cubicsize, mipsize; // cubicsize = ssize^2
extern dynent
    *player1; // special client ent that receives input and acts as camera
extern dvector players; // all the other clients (in multiplayer)
extern bool editmode;
extern vector<entity> ents; // map entities
extern vec worldpos;        // current target of the crosshair in the world
extern int lastmillis;      // last time
extern int curtime;         // current frame time
extern int gamemode, nextmode;
extern int xtraverts;
extern bool demoplayback;

#define DMF 16.0f

#define vsub(u, v)                                                             \
	{                                                                      \
		(u).x -= (v).x;                                                \
		(u).y -= (v).y;                                                \
		(u).z -= (v).z;                                                \
	};
#define vdist(d, v, e, s)                                                      \
	vec v = s;                                                             \
	vsub(v, e);                                                            \
	float d = (float)sqrt(dotprod(v, v));
#define vreject(v, u, max)                                                     \
	((v).x > (u).x + (max) || (v).x < (u).x - (max) ||                     \
	    (v).y > (u).y + (max) || (v).y < (u).y - (max))
#define vlinterp(v, f, u, g)                                                   \
	{                                                                      \