[Add] Initial Mission work.

dat/missions/.yaml

@@ -0,0 +1,17 @@
+- Name  : Welcome
+  Lua   : welcome
+  Avail :
+        Location  : None
+- Name  : Cargo Freight
+  Lua   : cargo
+  Avail :
+        Location  : Computer
+        Alliance  : Neutral
+        Alliance  : Empire United
+- Name  : Empire Recruitment
+  Lua   : empire
+  Avail :
+        Location  : Bar
+        Faction   : Empire
+
+

dat/missions/cargo.lua

@@ -0,0 +1,17 @@
+function create()
+  -- Target destination.
+  planet = space.getPlanet(misn.factions())
+
+  -- Missions generic.
+  misn_type = "Rush"
+  misn_setTitle("Rush Delivery to " .. planet)
+
+  -- More mission specifics.
+  carg_mass = rnd.int(10, 30)
+  carg.type = rnd.setDesc(string.format(
+                          "%s needs a rush delivery of %d tons of %s by %s.",
+                          planet, carg_mass, carg_type, "SOMEDAY"))
+  misn_setReward(string.format("%d Scred",
+                 carg_mass * 1000 + rnd.int(0, 5000)))
+end
+

src/map.c

@@ -135,8 +135,8 @@ static void map_render(double bx, double by, double w, double h) {
   glColour* col;
 
   r = 5.;
-  x = (bx - map_xpos + w/2) * 1.; // Map zoom.
-  y = (by - map_ypos + h/2) * 1.; // Map zoom.
+  x = (bx - map_xpos + w/2) * 1.;
+  y = (by - map_ypos + h/2) * 1.;
   // Background
   COLOUR(cBlack);
   glBegin(GL_QUADS);

src/misn_lua.c

@@ -0,0 +1,133 @@
+#include "lua.h"
+#include "lauxlib.h"
+
+#include "mission.h"
+#include "log.h"
+#include "lephisto.h"
+#include "rng.h"
+#include "space.h"
+#include "misn_lua.h"
+
+// FUCK LUA!!!                                                                  
+#define luaL_register(L,n,l) (luaL_openlib(L, (n),(l), 0))
+
+#define MIN_ARGS(n) if(lua_gettop(L) < n) return 0
+
+static Mission* cur_mission = NULL;
+
+// -- Libraries. --
+
+// Mission.
+static int misn_setTitle(lua_State* L);
+static int misn_setDesc(lua_State* L);
+static int misn_setReward(lua_State* L);
+static const luaL_Reg misn_methods[] = {
+  { "setTitle",     misn_setTitle   },
+  { "setDesc",      misn_setDesc    },
+  { "setReward",    misn_setReward  },
+  { 0, 0 }
+};
+
+// Space.
+static int space_getPlanet(lua_State* L);
+static const luaL_Reg space_methods[] = {
+  { "getPlanet",    space_getPlanet },
+  { 0, 0 }
+};
+
+// RNG.
+static int rnd_int(lua_State*L);
+static const luaL_Reg rnd_methods[] = {
+  { "int",    rnd_int },
+  { 0, 0 }
+};
+
+// Register all the libaries.
+int misn_loadLibs(lua_State* L) {
+  luaL_register(L, "misn",    misn_methods);
+  luaL_register(L, "space",   space_methods);
+  luaL_register(L, "rnd",     rnd_methods);
+  return 0;
+}
+
+// Run a mission function.
+int misn_run(Mission* misn, char* func) {
+  int ret;
+
+  cur_mission = misn;
+
+  lua_getglobal(misn->L, func);
+  if((ret = lua_pcall(misn->L, 0, 0, 0)))
+    // Did an oops.
+    WARN("Mission '%s' -> '%s' : %s",
+         cur_mission->data->name, func, lua_tostring(misn->L, -1));
+
+  cur_mission = NULL;
+
+  return ret;
+}
+
+// -- Mission. --
+
+static int misn_setTitle(lua_State* L) {
+  MIN_ARGS(1);
+  if(lua_isstring(L, -1)) {
+    if(cur_mission->title)
+      // Cleanup the old title.
+      free(cur_mission->title);
+    cur_mission->title = strdup(lua_tostring(L, -1));
+  }
+  return 0;
+}
+
+static int misn_setDesc(lua_State* L) {
+  MIN_ARGS(1);
+  if(lua_isstring(L, -1)) {
+    if(cur_mission->title)
+      // Cleanup the old description.
+      free(cur_mission->desc);
+    cur_mission->desc = strdup(lua_tostring(L, -1));
+  }
+  return 0;
+}
+
+static int misn_setReward(lua_State* L) {
+  MIN_ARGS(1);
+  if(lua_isstring(L, -1)) {
+    if(cur_mission->reward)
+      // Cleanup the old reward.
+      free(cur_mission->reward);
+    cur_mission->reward = strdup(lua_tostring(L, -1));
+  }
+  return 0;
+}
+
+static int space_getPlanet(lua_State* L) {
+  (void)L;
+  return 0;
+}
+
+static rnd_int(lua_State* L) {
+  int o;
+
+  o = lua_gettop(L);
+
+  if(o == 0) lua_pushnumber(L, RNGF()); // Random double o <= x <= 1.
+  else if(o == 1) {
+    // Random int 0 <= x <= param.
+    if(lua_isnumber(L, -1))
+      lua_pushnumber(L, RNG(0, (int)lua_tonumber(L, -1)));
+    else return 0;
+  }
+  else if(o >= 2) {
+    // Random int param 1 <= x <= param 2.
+    if(lua_isnumber(L, -1) && lua_isnumber(L, -2))
+      lua_pushnumber(L, RNG((int)lua_tonumber(L, -2), (int)lua_tonumber(L,-1)));
+    else return 0;
+  }
+  else return 0;
+  
+  // Unless it's returned 0 already it'll always return param.
+  return 1;
+}
+

src/misn_lua.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include "lua.h"
+
+// Load the libraries for a lua state.
+int misn_loadLibs(lua_State* L);
+

src/mission.c

@@ -0,0 +1,68 @@
+#include <string.h>
+#include <malloc.h>
+
+#include "lua.h"
+#include "lauxlib.h"
+#include "lualib.h"
+
+#include "lephisto.h"
+#include "log.h"
+#include "mission.h"
+
+// Current player missions.
+Mission player_missions[MISSION_MAX];
+
+// Mission stack.
+//static Mission* mission_stack = NULL; // Unmuteable after creation.
+//static int mission_nstack = 0;
+
+extern int misn_run(Mission* misn, char* func);
+
+// Create a mission.
+int mission_create(MissionData* misn) {
+  int i;
+
+  // Find last mission.
+  for(i = 0; i < MISSION_MAX; i++)
+    if(player_missions[i].data == NULL) break;
+
+  // No missions left.
+  if(i >= MISSION_MAX) return -1;
+
+  player_missions[i].data = misn;
+
+  // Init lua.
+  player_missions[i].L = luaL_newstate();
+  luaopen_string(player_missions[i].L); // String.format can be useful..
+  misn_loadLibs(player_missions[i].L);  // Load our custom libraries.
+
+  return 0;
+}
+
+// Load/Free.
+int missions_load(void) {
+#if 0
+  yaml_parser_t parser;
+  yaml_event_t input_event;
+
+  memset(&parser, 0, sizeof(parser));
+  memset(&input_event, 0, sizeof(input_event));
+
+  // Set up parser.
+  if(!yaml_parser_initialize(&parser)) {
+    ERR("Could not initialize the parser object");
+    return -1;
+  }
+
+  // Cleanup parser.
+  yaml_event_delete(&input_event);
+  yaml_parser_delete(&parser);
+#endif
+
+  return 0;
+}
+
+void missions_free(void) {
+
+}
+

src/mission.h

@@ -0,0 +1,51 @@
+#pragma once
+#include "faction.h"
+#include "misn_lua.h"
+
+#define MIS_AVAIL_COMPUTER    1
+#define MIS_AVAIL_BAR         2
+#define MIS_AVAIL_OUTFIT      3
+#define MIS_AVAIL_SHIPYARD    4
+#define MIS_AVAIL_LAND        5
+
+// Flags.
+#define mis_isFlag(m,f)   ((m)->flags  & (f))
+#define mis_setFlag(m,f)  ((m)->flags |= (f))
+#define mis_rmFlag(m,f)   ((m)->flags ^= (f))
+
+typedef struct MissionData_ {
+  char* name; // the name of the mission.
+
+  // Availability.
+  struct {
+    int loc; // Location.
+    double chance; // Chance of it appearing.
+
+    // For specific cases.
+    char* planet;
+    char* system;
+
+    // For generic cases.
+    Faction* factions;
+    int nfactions;
+  } avail;
+} MissionData;
+
+// Active mission.
+typedef struct Mission_ {
+  MissionData* data;
+
+  char* title;  // Not to be confused with name..
+  char* desc;   // Description of the mission.
+  char* reward; // Rewards - in text.
+
+  lua_State* L;
+} Mission;
+
+#define MISSION_MAX 6 // No sense in the player having unlimited missions..
+extern Mission player_mission[MISSION_MAX];
+
+// Load/Quit.
+int missions_load(void);
+void missions_free(void);
+

src/rng.h

@@ -1,7 +1,6 @@
 #pragma once
-#include <limits.h>
 
-#define RNG(L,H)  ((int)L + (int)((double)(H-L+1) * (randfp()))
+#define RNG(L,H)  ((int)L + (int)((double)(H-L+1) * randfp()))
 #define RNGF()  (randfp())
 
 void rng_init(void);