1 files changed, 69 insertions, 0 deletions
diff --git a/Homework/cs3460/gameoflife/LifeSimulator.cpp b/Homework/cs3460/gameoflife/LifeSimulator.cpp
new file mode 100644
index 0000000..daa4d45
--- /dev/null
+++ b/Homework/cs3460/gameoflife/LifeSimulator.cpp
@@ -0,0 +1,69 @@
+#include "LifeSimulator.hpp"
+
+LifeSimulator::LifeSimulator(std::uint8_t sizeX, std::uint8_t sizeY) :
+    m_width(sizeX), m_height(sizeY),
+    m_curr_grid(sizeY, std::vector<bool>(sizeX, false)),
+    m_buff_grid(sizeY, std::vector<bool>(sizeX, false))
+{
+}
+
+std::uint8_t wrapAround(std::int16_t delta, std::uint8_t pos, std::uint8_t max)
+{
+    if (pos + delta > max)
+        return 0;
+    if (pos + delta < 0)
+        return max;
+    return static_cast<std::uint8_t>(delta + pos);
+}
+
+std::uint8_t LifeSimulator::getNeighbors(std::uint8_t x, std::uint8_t y) const
+{
+    std::uint8_t neighbors = 0;
+    for (std::int16_t dy = -1; dy <= 1; dy++)
+        for (std::int16_t dx = -1; dx <= 1; dx++)
+            if (!(dx == 0 && dy == 0))
+            {
+                std::uint8_t wrappedX = wrapAround(dx, x, m_width - 1);
+                std::uint8_t wrappedY = wrapAround(dy, y, m_height - 1);
+                if (getCell(wrappedX, wrappedY))
+                    neighbors++;
+            }
+    return neighbors;
+}
+
+void LifeSimulator::insertPattern(const Pattern& pattern, std::uint8_t startX, std::uint8_t startY)
+{
+    for (std::uint8_t y = startY; y < std::min(getSizeY(), static_cast<std::uint8_t>(startY + pattern.getSizeY())); ++y)
+        for (std::uint8_t x = startX; x < std::min(getSizeX(), static_cast<std::uint8_t>(startX + pattern.getSizeX())); ++x)
+            m_curr_grid.at(y).at(x) = pattern.getCell(x - startX, y - startY);
+}
+
+void LifeSimulator::update()
+{
+#pragma omp parallel for
+    for (char y = 0; y < m_height; ++y)
+        for (std::uint8_t x = 0; x < m_width; ++x)
+        {
+            std::uint8_t neighbors = getNeighbors(x, y);
+            if (getCell(x, y))
+                m_buff_grid.at(y).at(x) = (neighbors == 2 || neighbors == 3);
+            else
+                m_buff_grid.at(y).at(x) = (neighbors == 3);
+        }
+    m_buff_grid.swap(m_curr_grid);
+}
+
+std::uint8_t LifeSimulator::getSizeX() const
+{
+    return m_width;
+}
+
+std::uint8_t LifeSimulator::getSizeY() const
+{
+    return m_height;
+}
+
+bool LifeSimulator::getCell(std::uint8_t x, std::uint8_t y) const
+{
+    return m_curr_grid.at(y).at(x);
+}