1 files changed, 32 insertions, 0 deletions
diff --git a/src/components.rs b/src/components.rs
index 07de1d5..c72ba61 100644
--- a/src/components.rs
+++ b/src/components.rs
@@ -1,10 +1,13 @@
 
+use std::ops;
+
 use specs::{
 	VecStorage,
 	Component
 };
 
 use super::controls::Control;
+use super::util::clamp;
 
 
 #[derive(Component, Debug, Hash, PartialEq, Eq, Clone, Copy)]
@@ -14,6 +17,31 @@ pub struct Position {
 	pub y: i32
 }
 
+impl ops::Add<Position> for Position {
+	type Output = Position;
+
+	fn add(self, other: Position) -> Position {
+		Position {
+			x: self.x + other.x,
+			y: self.y + other.y
+		}
+	}
+}
+
+impl Position {
+	
+	pub fn new(x: i32, y: i32) -> Position {
+		Position {x, y}
+	}
+	
+	pub fn clamp(self, smaller: Position, larger: Position) -> Position {
+		Position {
+			x: clamp(self.x, smaller.x, larger.x),
+			y: clamp(self.y, smaller.y, larger.y)
+		}
+	}
+}
+
 #[derive(Component, Debug, Clone)]
 #[storage(VecStorage)]
 pub struct Visible {
@@ -24,3 +52,7 @@ pub struct Visible {
 #[derive(Component, Debug)]
 #[storage(VecStorage)]
 pub struct Controller(pub Control);
+
+#[derive(Component, Debug)]
+#[storage(VecStorage)]
+pub struct Blocking;