/* ************************************************************************
*   File: weather.c                                     Part of CircleMUD *
*  Usage: functions handling time and the weather                         *
*                                                                         *
*  All rights reserved.  See license.doc for complete information.        *
*                                                                         *
*  Copyright (C) 1993, 94 by the Trustees of the Johns Hopkins University *
*  CircleMUD is based on DikuMUD, Copyright (C) 1990, 1991.               *
************************************************************************ */

#include <stdio.h>
#include <string.h>
#include <time.h>

#include "structs.h"
#include "awake.h"
#include "utils.h"
#include "comm.h"
#include "handler.h"
#include "interpreter.h"
#include "db.h"

extern struct time_info_data time_info;
extern struct char_data *character_list;
extern struct index_data *mob_index;

void another_hour(void)
{
  bool new_month = FALSE;
  struct char_data *ch, *next;
  char *temp;

  time_info.hours++;

  switch (time_info.hours) {
    case 7:
      weather_info.sunlight = SUN_RISE;
      if (weather_info.sky == SKY_CLOUDLESS)
        temp = "^y";
      else temp = "^L";
      sprintf(buf, "%sThe sun rises in the east.^n\r\n", temp);
      send_to_outdoor(buf);
      for (ch = character_list; ch; ch = next) {
        next = ch->next;
        if (IS_SPIRIT(ch) && GET_MOB_VNUM(ch) >= 25 && GET_MOB_VNUM(ch) <= 41) {
          act("$n abrupty fades from the physical plane.", TRUE, ch, 0, 0, TO_ROOM);
          act("Arrgh!  The sun is rising!  Goodbye!", FALSE, ch, 0, 0, TO_CHAR);
          extract_char(ch);
        }
      }
      break;
    case 9:
      weather_info.sunlight = SUN_LIGHT;
      switch (weather_info.sky) {
        case SKY_CLOUDLESS: temp = "^Y"; break;
        case SKY_CLOUDY:
        case SKY_RAINING:   temp = "^n"; break;
        case SKY_LIGHTNING: temp = "^L"; break;
        default:            temp = "^Y"; break;
      }
      sprintf(buf, "%sThe day has begun.^n\r\n", temp);
      send_to_outdoor(buf);
      break;
    case 18:
      weather_info.sunlight = SUN_SET;
      switch (weather_info.sky) {
        case SKY_CLOUDLESS: temp = "^r"; break;
        case SKY_CLOUDY:    temp = "^B"; break;
        case SKY_RAINING:   temp = "^b"; break;
        case SKY_LIGHTNING: temp = "^L"; break;
        default:            temp = "^r"; break;
      }
      sprintf(buf, "%sThe sun slowly disappears in the west.^n\r\n", temp);
      send_to_outdoor(buf);
      for (ch = character_list; ch; ch = next) {
        next = ch->next;
        if (IS_SPIRIT(ch) && GET_MOB_VNUM(ch) >= 25 && GET_MOB_VNUM(ch) <= 41) {
          act("$n abrupty fades from the physical plane.", TRUE, ch, 0, 0, TO_ROOM);
          act("You sense the sun setting, and dissolve yourself.", FALSE, ch, 0, 0, TO_CHAR);
          extract_char(ch);
        }
      }
      break;
    case 21:
      weather_info.sunlight = SUN_DARK;
      if (weather_info.sky == SKY_CLOUDLESS)
        sprintf(buf, "^bThe night has begun.^n\r\n");
      else sprintf(buf, "^LThe night has begun.^n\r\n");
      send_to_outdoor(buf);
      break;
  }

  if (time_info.hours > 23) {
    time_info.hours -= 24;
    time_info.day++;
    time_info.weekday++;
    if (time_info.weekday > 6)
      time_info.weekday = 0;

    if (((time_info.month == 3) || (time_info.month == 5) ||
         (time_info.month == 8) || (time_info.month == 10)) &&
         (time_info.day > 29))
         new_month = TRUE;
    else if ((time_info.month == 1) && (time_info.day > 27))
         new_month = TRUE;
    else if (time_info.day > 30)
         new_month = TRUE;
    if (new_month) {
       time_info.day = 0;
       time_info.month++;

      if (time_info.month > 11) {
        time_info.month = 0;
        time_info.year++;
      }
    }
  }
}

void another_minute(void)
{
  time_info.minute++;

  if (time_info.minute >= 60) {
    time_info.minute = 0;
    another_hour();
  }
}

void weather_change(void)
{
  int diff, change;

  if ((time_info.month >= 8) && (time_info.month <= 12))
    diff = (weather_info.pressure > 985 ? -2 : 2);
  else diff = (weather_info.pressure > 1015 ? -2 : 2);

  weather_info.change += (dice(1, 4) * diff + dice(2, 6) - dice(2, 6));

  weather_info.change = MIN(weather_info.change, 12);
  weather_info.change = MAX(weather_info.change, -12);

  weather_info.pressure += weather_info.change;

  weather_info.pressure = MIN(weather_info.pressure, 1040);
  weather_info.pressure = MAX(weather_info.pressure, 960);

  change = 0;

  switch (weather_info.sky) {
    case SKY_CLOUDLESS:
      if (weather_info.pressure < 990)
        change = 1;
      else if (weather_info.pressure < 1010)
        if (dice(1, 4) == 1)
          change = 1;
      break;
    case SKY_CLOUDY:
      if (weather_info.pressure < 970)
        change = 2;
      else if (weather_info.pressure < 990)
        if (dice(1, 4) == 1)
          change = 2;
        else change = 0;
      else if (weather_info.pressure > 1030)
        if (dice(1, 4) == 1)
          change = 3;
      break;
    case SKY_RAINING:
      if (weather_info.pressure < 970)
        if (dice(1, 4) == 1)
          change = 4;
        else change = 0;
      else if (weather_info.pressure > 1030)
        change = 5;
      else if (weather_info.pressure > 1010)
        if (dice(1, 4) == 1)
          change = 5;
      break;
    case SKY_LIGHTNING:
      if (weather_info.pressure > 1010)
        change = 6;
      else if (weather_info.pressure > 990)
        if (dice(1, 4) == 1)
          change = 6;
      break;
    default:
      change = 0;
      weather_info.sky = SKY_CLOUDLESS;
      break;
  }

  switch (change) {
    case 0:
      break;
    case 1:
      send_to_outdoor("^LThe sky starts to get cloudy.^n\r\n");
      weather_info.sky = SKY_CLOUDY;
      break;
    case 2:
      send_to_outdoor("^BIt starts to rain.^n\r\n");
      weather_info.sky = SKY_RAINING;
      break;
    case 3:
      send_to_outdoor("^CThe clouds disappear.^n\r\n");
      weather_info.sky = SKY_CLOUDLESS;
      break;
    case 4:
      send_to_outdoor("^WLightning^L starts to show in the sky.^n\r\n");
      weather_info.sky = SKY_LIGHTNING;
      break;
    case 5:
      send_to_outdoor("^cThe rain stops.^n\r\n");
      weather_info.sky = SKY_CLOUDY;
      break;
    case 6:
      send_to_outdoor("^cThe ^Wlightning^c stops.^n\r\n");
      weather_info.sky = SKY_RAINING;
      break;
    default:
      break;
  }
}