From 2d615ed735f44baff751b850ddb060223ca97503 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EC=98=A4=EB=B3=91=EC=A4=80?= <mail@luftaquila.io>
Date: Mon, 29 Apr 2024 19:57:18 +0900
Subject: [PATCH] add: display overlap and touch check logic

---
 src/client.rs  |  2 +-
 src/display.rs | 55 +++++++++++++++++++++++++++++++++++++++++++++++---
 src/lib.rs     |  2 +-
 src/server.rs  |  2 +-
 4 files changed, 55 insertions(+), 6 deletions(-)

diff --git a/src/client.rs b/src/client.rs
index 52fa6f6..f139d81 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -69,7 +69,7 @@ fn set_display_position(server_disp: Vec<Display>) -> Vec<Display> {
     let system_disp: Vec<Display> = DisplayInfo::all()
         .expect("[ERR] failed to get system displays")
         .into_iter()
-        .map(Display::from)
+        .map(|x| Display::from(x, 0))
         .collect();
 
     // TODO
diff --git a/src/display.rs b/src/display.rs
index 503c549..46b4917 100644
--- a/src/display.rs
+++ b/src/display.rs
@@ -56,8 +56,8 @@ pub struct Display {
     pub owner: Cid,
 }
 
-impl From<DisplayInfo> for Display {
-    fn from(item: DisplayInfo) -> Self {
+impl Display {
+    pub fn from(item: DisplayInfo, cid: Cid) -> Self {
         Display {
             name: item.name,
             id: rand::random(),
@@ -71,7 +71,56 @@ impl From<DisplayInfo> for Display {
             frequency: item.frequency,
             is_primary: item.is_primary,
             warpzones: Vec::new(),
-            owner: 0,
+            owner: cid,
+        }
+    }
+
+    pub fn is_overlap(&self, target: Display) -> bool {
+        let self_right = self.x + self.width;
+        let self_bottom = self.y + self.height;
+        let target_right = target.x + target.width;
+        let target_bottom = target.y + target.height;
+
+        self.x < target_right
+            && self_right > target.x
+            && self.y < target_bottom
+            && self_bottom > target.y
+    }
+
+    pub fn is_touch(&self, target: Display) -> Option<(i32, i32, ZoneDirection)> {
+        let self_right = self.x + self.width;
+        let self_bottom = self.y + self.height;
+        let target_right = target.x + target.width;
+        let target_bottom = target.y + target.height;
+
+        let horizontal_touch = (self_right == target.x || self.x == target_right)
+            && (self.y < target_bottom && self_bottom > target.y);
+
+        let vertical_touch = (self_bottom == target.y || self.y == target_bottom)
+            && (self.x < target_right && self_right > target.x);
+
+        if horizontal_touch {
+            return Some((
+                i32::max(self.y, target.y),
+                i32::min(self_bottom, target_bottom),
+                if self_right == target.x {
+                    ZoneDirection::HorizontalRight
+                } else {
+                    ZoneDirection::HorizontalLeft
+                },
+            ));
+        } else if vertical_touch {
+            return Some((
+                i32::max(self.x, target.x),
+                i32::min(self_right, target_right),
+                if self_bottom == target.y {
+                    ZoneDirection::VerticalDown
+                } else {
+                    ZoneDirection::VerticalUp
+                },
+            ));
+        } else {
+            None
         }
     }
 }
diff --git a/src/lib.rs b/src/lib.rs
index f39722e..b248272 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -9,4 +9,4 @@ pub use server::*;
 pub use utils::*;
 
 pub const PORT: u16 = 2426;
-pub const MAX_DISPLAYS: u32 = 128;
+pub const SERVER_CID: Cid = 0;
diff --git a/src/server.rs b/src/server.rs
index be2127a..1aec1eb 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -28,7 +28,7 @@ impl Server {
         let disp: Vec<Display> = DisplayInfo::all()
             .expect("[ERR] failed to get system displays")
             .into_iter()
-            .map(Display::from)
+            .map(|x| Display::from(x, SERVER_CID))
             .collect();
 
         if disp.len() == 0 {