1 files changed, 16 insertions, 0 deletions
diff --git a/src/paperflight/static/util.js b/src/paperflight/static/util.js
new file mode 100644
index 0000000..f818809
--- /dev/null
+++ b/src/paperflight/static/util.js
@@ -0,0 +1,16 @@
+/**
+ * General purpose functions
+ */
+function isPointInRamp(x, y, ramp) {
+    var yDelta = (x - ramp.x) * ramp.slope
+    return ramp.x < x && x < ramp.x + ramp.width && ramp.y < y + yDelta && y + yDelta < ramp.y + ramp.height
+}
+function isPointInBox(x, y, box) {
+    return box.x <= x && x <= box.x + box.width && box.y <= y && y <= box.y + box.height
+}
+function isPlaneInBox(box) {
+    return isPointInBox(plane.x, plane.y, box)
+        || isPointInBox(plane.x + plane.width, plane.y, box)
+        || isPointInBox(plane.x + plane.width, plane.y + plane.height, box)
+        || isPointInBox(plane.x, plane.y + plane.height, box)
+}
+\ No newline at end of file