From e33e19d0587146859d48a134ec9fd94e7b7ba5cd Mon Sep 17 00:00:00 2001
From: "FWoltermann@gmail.com"
 <FWoltermann@gmail.com@076cb2c4-205e-83fd-5cf3-1be9aa105544>
Date: Thu, 8 Dec 2011 14:53:40 +0000
Subject: Initial upload

---
 Stars45/Weather.cpp | 178 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 178 insertions(+)
 create mode 100644 Stars45/Weather.cpp

(limited to 'Stars45/Weather.cpp')

diff --git a/Stars45/Weather.cpp b/Stars45/Weather.cpp
new file mode 100644
index 0000000..49a6259
--- /dev/null
+++ b/Stars45/Weather.cpp
@@ -0,0 +1,178 @@
+/*  Project Starshatter 5.0
+    Destroyer Studios LLC
+    Copyright © 1997-2007. All Rights Reserved.
+
+    SUBSYSTEM:    Stars.exe
+    FILE:         Weather.cpp
+    AUTHOR:       John DiCamillo
+
+
+    OVERVIEW
+    ========
+    Manages local weather conditions according to the system stardate
+*/
+
+#include "MemDebug.h"
+#include "Weather.h"
+#include "StarSystem.h"
+#include "Game.h"
+
+// +--------------------------------------------------------------------+
+
+Weather::Weather()
+{
+   state       = CLEAR;
+   period      = 7 * 20 * 3600;
+   ceiling     = 0;
+   visibility  = 1;
+
+   for (int i = 0; i < NUM_STATES; i++)
+      chances[i] = 0;
+
+   chances[0]  = 1;
+}
+
+// +--------------------------------------------------------------------+
+
+Weather::~Weather()
+{ }
+
+// +--------------------------------------------------------------------+
+
+void
+Weather::SetChance(int n, double c)
+{
+   if (n >= 0 && n < NUM_STATES) {
+      if (c > 1 && c <= 100)
+         chances[n] = c / 100;
+
+      else if (c < 1)
+         chances[n] = c;
+   }
+}
+
+void
+Weather::NormalizeChances()
+{
+   double total = 0;
+
+   for (int i = 1; i < NUM_STATES; i++)
+      total += chances[i];
+
+   if (total <= 1) {
+      chances[0] = 1 - total;
+   }
+
+   else {
+      chances[0] = 0;
+
+      for (i = 1; i < NUM_STATES; i++)
+         chances[i] /= total;
+   }
+
+   int    index = 0;
+   double level = 0;
+
+   for (i = 0; i < NUM_STATES; i++) {
+      if (chances[i] > 0) {
+         level += chances[i];
+
+         active_states[index] = (STATE) i;
+         thresholds[index]    = level;
+
+         index++;
+      }
+   }
+
+   while (index < NUM_STATES)
+      thresholds[index++] = 10;
+}
+
+// +--------------------------------------------------------------------+
+
+void
+Weather::Update()
+{
+   NormalizeChances();
+
+   double weather = (sin(StarSystem::Stardate() * 2 * PI / period)+1)/2;
+
+   state = active_states[0];
+
+   for (int i = 1; i < NUM_STATES; i++) {
+      if (weather > thresholds[i-1] && weather <= thresholds[i]) {
+         state = active_states[i];
+         break;
+      }
+   }
+
+   switch (state) {
+   default:
+   case CLEAR:
+      ceiling    = 0;
+      visibility = 1.0;
+      break;
+
+   case HIGH_CLOUDS:
+      ceiling    = 0;
+      visibility = 0.9;
+      break;
+
+   case MODERATE_CLOUDS:
+      ceiling    = 0;
+      visibility = 0.8;
+      break;
+
+   case OVERCAST:
+      ceiling    = 6000;
+      visibility = 0.7;
+      break;
+
+   case FOG:
+      ceiling    = 3500;
+      visibility = 0.6;
+      break;
+
+   case STORM:
+      ceiling    = 7500;
+      visibility = 0.5;
+      break;
+   }
+}
+
+// +--------------------------------------------------------------------+
+
+Text
+Weather::Description() const
+{
+   Text description;
+
+   switch (state) {
+   default:
+   case CLEAR:
+      description = Game::GetText("weather.clear");
+      break;
+
+   case HIGH_CLOUDS:
+      description = Game::GetText("weather.high-clouds");
+      break;
+
+   case MODERATE_CLOUDS:
+      description = Game::GetText("weather.partly-cloudy");
+      break;
+
+   case OVERCAST:
+      description = Game::GetText("weather.overcast");
+      break;
+
+   case FOG:
+      description = Game::GetText("weather.fog");
+      break;
+
+   case STORM:
+      description = Game::GetText("weather.storm");
+      break;
+   }
+
+   return description;
+}
\ No newline at end of file
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