diff --git a/src/misn_lua.c b/src/misn_lua.c
index bbf2091..b4929eb 100644
--- a/src/misn_lua.c
+++ b/src/misn_lua.c
@@ -22,10 +22,12 @@ static Mission* cur_mission = NULL;
 static int misn_setTitle(lua_State* L);
 static int misn_setDesc(lua_State* L);
 static int misn_setReward(lua_State* L);
+static int misn_factions(lua_State* L);
 static const luaL_Reg misn_methods[] = {
   { "setTitle",     misn_setTitle   },
   { "setDesc",      misn_setDesc    },
   { "setReward",    misn_setReward  },
+  { "factions",     misn_factions   },
   { 0, 0 }
 };
 
@@ -36,6 +38,19 @@ static const luaL_Reg space_methods[] = {
   { 0, 0 }
 };
 
+// Player.
+static int player_freeSpace(lua_State* L);
+static int player_addCargo(lua_State* L);
+static int player_rmCargo(lua_State* L);
+static int player_pay(lua_State* L);
+static const luaL_Reg player_methods[] = {
+  { "freeCargo",    player_freeSpace  },
+  { "addCargo",     player_addCargo   },
+  { "rmCargo",      player_rmCargo    },
+  { "pay",          player_pay        },
+  { 0, 0 }
+};
+
 // RNG.
 static int rnd_int(lua_State*L);
 static const luaL_Reg rnd_methods[] = {
@@ -53,6 +68,7 @@ static const luaL_Reg hook_methods[] = {
 int misn_loadLibs(lua_State* L) {
   luaL_register(L, "misn",    misn_methods);
   luaL_register(L, "space",   space_methods);
+  luaL_register(L, "player",  player_methods);
   luaL_register(L, "rnd",     rnd_methods);
   luaL_register(L, "hook",    hook_methods);
   return 0;
@@ -83,7 +99,7 @@ static int misn_setTitle(lua_State* L) {
     if(cur_mission->title)
       // Cleanup the old title.
       free(cur_mission->title);
-    cur_mission->title = strdup(lua_tostring(L, -1));
+    cur_mission->title = strdup((char*)lua_tostring(L, -1));
   }
   return 0;
 }
@@ -94,7 +110,7 @@ static int misn_setDesc(lua_State* L) {
     if(cur_mission->title)
       // Cleanup the old description.
       free(cur_mission->desc);
-    cur_mission->desc = strdup(lua_tostring(L, -1));
+    cur_mission->desc = strdup((char*)lua_tostring(L, -1));
   }
   return 0;
 }
@@ -105,13 +121,74 @@ static int misn_setReward(lua_State* L) {
     if(cur_mission->reward)
       // Cleanup the old reward.
       free(cur_mission->reward);
-    cur_mission->reward = strdup(lua_tostring(L, -1));
+    cur_mission->reward = strdup((char*)lua_tostring(L, -1));
   }
   return 0;
 }
 
+static int misn_factions(lua_State* L) {
+  (void) L;
+  // TODO: proper misn.factions() implementation.
+  return 0;
+}
+
 static int space_getPlanet(lua_State* L) {
   (void)L;
+  // TODO: Proper getPlanet implementation.
+  lua_pushstring(L, "Arrakis");
+  return 1;
+}
+
+// -- Player. --
+static int player_freeSpace(lua_State* L) {
+  lua_pushnumber(L, pilot_freeCargo(player));
+  return 1;
+}
+
+static int player_addCargo(lua_State* L) {
+  Commodity* cargo;
+  int quantity, ret;
+
+  MIN_ARGS(2);
+
+  if(lua_isstring(L, -1)) cargo = commodity_get((char*) lua_tostring(L, -1));
+  else return 0;
+  if(lua_isnumber(L, -2)) quantity = (int)lua_tonumber(L, -2);
+  else return 0;
+
+  ret = pilot_addCargo(player, cargo, quantity);
+
+  lua_pushnumber(L, ret);
+  return 1;
+}
+
+static int player_rmCargo(lua_State* L) {
+  Commodity* cargo;
+  int quantity, ret;
+
+  MIN_ARGS(2);
+
+  if(lua_isstring(L, -1)) cargo = commodity_get((char*) lua_tostring(L, -1));
+  else return 0;
+  if(lua_isnumber(L, -2)) quantity = (int) lua_tonumber(L, -2);
+  else return 0;
+
+  ret = pilot_rmCargo(player, cargo, quantity);
+
+  lua_pushnumber(L, ret);
+  return 1;
+}
+
+static int player_pay(lua_State* L) {
+  int money;
+
+  MIN_ARGS(1);
+
+  if(lua_isnumber(L, -1)) money = (int) lua_tonumber(L, -1);
+  else return 0;
+
+  player->credits += money;
+
   return 0;
 }
 
diff --git a/src/mission.c b/src/mission.c
index 0b0c3a5..c0e04e7 100644
--- a/src/mission.c
+++ b/src/mission.c
@@ -49,6 +49,11 @@ static int mission_init(Mission* mission, MissionData* misn) {
   mission->id = ++mission_id;
   mission->data = misn;
 
+  // Sane defaults.
+  mission->title    = NULL;
+  mission->desc     = NULL;
+  mission->reward   = NULL;
+
   // Init lua.
   mission->L = luaL_newstate();
   if(mission->L == NULL) {
@@ -169,6 +174,7 @@ Mission* missions_computer(int* n, int faction, char* planet, char* system) {
   Mission* tmp;
   MissionData* misn;
 
+  tmp = NULL;
   m = 0;
   for(i = 0; i < mission_nstack; i++) {
     misn = &mission_stack[i];
diff --git a/src/pilot.c b/src/pilot.c
index e74f39a..fae7512 100644
--- a/src/pilot.c
+++ b/src/pilot.c
@@ -603,6 +603,11 @@ static void pilot_calcStats(Pilot* pilot) {
   pilot->energy = ec * pilot->energy_max;
 }
 
+// Pilot free cargo space.
+int pilot_freeCargo(Pilot* p) {
+  return p->cargo_free;
+}
+
 // Try to add quantity of cargo to pilot, return quantity actually added.
 int pilot_addCargo(Pilot* pilot, Commodity* cargo, int quantity) {
   int i, q;
diff --git a/src/pilot.h b/src/pilot.h
index 2aa8365..b745071 100644
--- a/src/pilot.h
+++ b/src/pilot.h
@@ -135,10 +135,11 @@ void pilot_hit(Pilot* p, const Solid* w, const unsigned int shooter,
 void pilot_setSecondary(Pilot* p, const char* secondary);
 void pilot_setAmmo(Pilot* p);
 double pilot_face(Pilot* p, const float dir);
-int pilot_freeSpace(Pilot* p);
+int pilot_freeSpace(Pilot* p); // Pilot space.
 int pilot_addOutfit(Pilot* pilot, Outfit* outfit, int quantity);
 int pilot_rmOutfit(Pilot* pilot, Outfit* outfit, int quantity);
 char* pilot_getOutfits(Pilot* pilot);
+int pilot_freeCargo(Pilot* p); // Cargo space.
 int pilot_addCargo(Pilot* pilot, Commodity* cargo, int quantity);
 int pilot_rmCargo(Pilot* pilot, Commodity* cargo, int quantity);