basics

src/grid.hpp

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <vector>
+
+class fluid_grid {
+private:
+  const int cell_size = 1; // how many square pixels make up a cell.
+                           // WARNING:
+                           // Must divide evenly into pixels_x and pixels_y
+  const int pixels_x;
+  const int pixels_y;
+
+  int size_x;
+  int size_y;
+  int size;
+
+  std::vector<int> grid;
+
+public:
+  fluid_grid(int pixels_x, int pixels_y)
+      : pixels_x(pixels_x), pixels_y(pixels_y) {
+    size_x = pixels_x / cell_size - 1; // -1 for boundary condition.
+    size_y = pixels_y / cell_size - 1;
+    size = (pixels_x + 2) * (pixels_y + 2);
+
+    std::vector<int> grid(size);
+  }
+  int address(int x, int y) {
+    // return ( ((i)+(N+2)*(j)))
+  }
+};