STARTREK: Move space functions into separate file

1 files changed, 46 insertions, 0 deletions

diff --git a/engines/startrek/space.h b/engines/startrek/space.h
new file mode 100644
index 0000000000..f5d08e5d1e
--- /dev/null
+++ b/engines/startrek/space.h
@@ -0,0 +1,46 @@
+// Pseudo-3D structs
+
+struct Point3 {
+	int32 x;
+	int32 y;
+	int32 z;
+
+	Point3 operator+(const Point3 &p) const {
+		Point3 p2;
+		p2.x = x + p.x;
+		p2.y = y + p.y;
+		p2.z = z + p.z;
+		return p2;
+	}
+	Point3 operator-(const Point3 &p) const {
+		Point3 p2;
+		p2.x = x - p.x;
+		p2.y = y - p.y;
+		p2.z = z - p.z;
+		return p2;
+	}
+};
+
+struct Point3W {
+	int16 x;
+	int16 y;
+	int16 z;
+};
+
+struct Star {
+	bool active;
+	Point3 pos;
+};
+
+// Struct for objects in space.
+// TODO: what does this stand for? Maybe rename it.
+struct R3 {
+	Point3 pos; // 0x0
+	int16 field1e; // 0x1e
+};
+
+// Maximum number of stars visible at once in the starfields
+#define NUM_STARS 16
+
+// Maximum number of R3 objects in space at once
+#define NUM_SPACE_OBJECTS 0x30