Moved Stars45 to StarsEx

1 files changed, 90 insertions, 0 deletions

diff --git a/StarsEx/Grid.cpp b/StarsEx/Grid.cpp
new file mode 100644
index 0000000..f65b483
--- /dev/null
+++ b/StarsEx/Grid.cpp
@@ -0,0 +1,90 @@
+/*  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
+    ========
+    Tactical Grid class
+*/
+
+#include "Grid.h"
+
+#include "Game.h"
+#include "Video.h"
+#include "Window.h"
+
+static const Color DARK_LINE( 8,  8,  8);
+static const Color LITE_LINE(16, 16, 16);
+
+// +--------------------------------------------------------------------+
+
+Grid::Grid(int asize, int astep)
+: size(asize), step(astep), drawn(0)
+{
+    radius = (float) (size * 1.414);
+}
+
+Grid::~Grid()
+{ }
+
+// +--------------------------------------------------------------------+
+
+int  Grid::CollidesWith(Graphic& o)                { return 0; }
+
+// +--------------------------------------------------------------------+
+
+void Grid::Render(Video* video, DWORD flags)
+{
+    if (!video || hidden) return;
+
+    int c = 0;
+    Color line;
+
+    for (int i = 0; i <= size; i += step) {
+        Point p1( i, 0, -size); p1 += Location();
+        Point p2( i, 0,  size); p2 += Location();
+        Point p3(-i, 0, -size); p3 += Location();
+        Point p4(-i, 0,  size); p4 += Location();
+
+        if (c) line = DARK_LINE;
+        else   line = LITE_LINE;
+
+        DrawLine(video, p1,p2,line);
+        DrawLine(video, p3,p4,line);
+
+        c++;
+        if (c > 3) c = 0;
+    }
+
+    c = 0;
+
+    for (int i = 0; i <= size; i += step) {
+        Point p1(-size, 0,  i); p1 += Location();
+        Point p2( size, 0,  i); p2 += Location();
+        Point p3(-size, 0, -i); p3 += Location();
+        Point p4( size, 0, -i); p4 += Location();
+
+        if (c) line = DARK_LINE;
+        else   line = LITE_LINE;
+
+        DrawLine(video, p1,p2,line);
+        DrawLine(video, p3,p4,line);
+
+        c++;
+        if (c > 3) c = 0;
+    }
+}
+
+void Grid::DrawLine(Video* video, Point& p1, Point& p2, Color grid_color)
+{
+    Vec3 v[2];
+
+    v[0] = p1;
+    v[1] = p2;
+
+    video->DrawLines(1, v, grid_color, Video::BLEND_ADDITIVE);
+}