[common] bullet with bricks collision

src/common/haxe/ru/m/geom/Direction.hx

@@ -0,0 +1,29 @@
+package ru.m.geom;
+
+import haxe.ds.IntMap;
+
+class Direction {
+    private static var directions:IntMap<Direction> = new IntMap<Direction>();
+
+    public static var LEFT(default, null) = new Direction(-1, 0);
+    public static var TOP(default, null) = new Direction(0, -1);
+    public static var RIGHT(default, null) = new Direction(1, 0);
+    public static var BOTTOM(default, null) = new Direction(0, 1);
+
+    public var x(default, null):Int;
+    public var y(default, null):Int;
+
+    private function new(x, y) {
+        this.x = x;
+        this.y = y;
+        directions.set(x + y * 10, this);
+    }
+
+    public function reverse():Direction {
+        return from(-x, -y);
+    }
+
+    public static function from(x:Int, y:Int):Direction {
+        return directions.get(x + y * 10);
+    }
+}

src/common/haxe/ru/m/geom/Point.hx

@@ -0,0 +1,15 @@
+package ru.m.geom;
+
+class Point {
+    public var x(default, default):Float;
+    public var y(default, default):Float;
+
+    public function new(x:Float, y:Float) {
+        this.x = x;
+        this.y = y;
+    }
+
+    public function add(point:Point):Point {
+        return new Point(x + point.x, y + point.y);
+    }
+}

src/common/haxe/ru/m/geom/Rectangle.hx

@@ -0,0 +1,31 @@
+package ru.m.geom;
+
+class Rectangle {
+    public var x(default, default):Float;
+    public var y(default, default):Float;
+    public var width(default, default):Float;
+    public var height(default, default):Float;
+    public var center(get, set):Point;
+
+    public function new(x:Float, y:Float, width:Float, height:Float) {
+        this.x = x;
+        this.y = y;
+        this.width = width;
+        this.height = height;
+    }
+
+    private function get_center():Point {
+        return new Point(x + width / 2, y + height / 2);
+    }
+
+    private function set_center(value:Point):Point {
+        this.x = value.x - width / 2;
+        this.y = value.y - height / 2;
+        return value;
+    }
+
+    public function getSide(direction:Direction):Point {
+        return center.add(new Point(direction.x * width / 2, direction.y * height / 2));
+    }
+
+}