Moved Stars45 to StarsEx

1 files changed, 177 insertions, 0 deletions

diff --git a/StarsEx/Weather.cpp b/StarsEx/Weather.cpp
new file mode 100644
index 0000000..b894b3e
--- /dev/null
+++ b/StarsEx/Weather.cpp
@@ -0,0 +1,177 @@
+/*  Starshatter: The Open Source Project
+    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
+    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
+    Copyright (c) 1997-2006, Destroyer Studios LLC.
+
+    AUTHOR:       John DiCamillo
+
+
+    OVERVIEW
+    ========
+    Manages local weather conditions according to the system stardate
+*/
+
+#include "Weather.h"
+#include "StarSystem.h"
+#include "Game.h"
+#include "ContentBundle.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 (int i = 1; i < NUM_STATES; i++)
+        chances[i] /= total;
+    }
+
+    int    index = 0;
+    double level = 0;
+
+    for (int 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 = ContentBundle::GetInstance()->GetText("weather.clear");
+        break;
+
+    case HIGH_CLOUDS:
+        description = ContentBundle::GetInstance()->GetText("weather.high-clouds");
+        break;
+
+    case MODERATE_CLOUDS:
+        description = ContentBundle::GetInstance()->GetText("weather.partly-cloudy");
+        break;
+
+    case OVERCAST:
+        description = ContentBundle::GetInstance()->GetText("weather.overcast");
+        break;
+
+    case FOG:
+        description = ContentBundle::GetInstance()->GetText("weather.fog");
+        break;
+
+    case STORM:
+        description = ContentBundle::GetInstance()->GetText("weather.storm");
+        break;
+    }
+
+    return description;
+}
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