From 3ad97a7ce3611a832a445f25cd81a5c72bfa7aed Mon Sep 17 00:00:00 2001
From: FatBoy-DOTC <justin.chucksinsulating@gmail.com>
Date: Wed, 3 Jan 2024 19:47:30 -0600
Subject: [PATCH] collision handler

---
 .../client/handlers/MoveToPointHandler.java   | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/src/engine/net/client/handlers/MoveToPointHandler.java b/src/engine/net/client/handlers/MoveToPointHandler.java
index c6d99f63..291f28df 100644
--- a/src/engine/net/client/handlers/MoveToPointHandler.java
+++ b/src/engine/net/client/handlers/MoveToPointHandler.java
@@ -10,13 +10,23 @@
 package engine.net.client.handlers;
 
 import engine.Enum;
+import engine.InterestManagement.WorldGrid;
+import engine.collision.Mesh;
+import engine.collision.Triangle;
 import engine.exception.MsgSendException;
 import engine.gameManager.BuildingManager;
+import engine.gameManager.ChatManager;
 import engine.gameManager.MovementManager;
+import engine.math.Vector3f;
+import engine.math.Vector3fImmutable;
 import engine.net.client.ClientConnection;
 import engine.net.client.msg.ClientNetMsg;
 import engine.net.client.msg.MoveToPointMsg;
 import engine.objects.*;
+import engine.server.MBServerStatics;
+
+import java.awt.*;
+import java.awt.geom.Line2D;
 
 public class MoveToPointHandler extends AbstractClientMsgHandler {
 
@@ -32,6 +42,30 @@ public class MoveToPointHandler extends AbstractClientMsgHandler {
         if(pc == null)
             return true;
 
+        //check for collisions
+        Line2D travelLine = new Line2D.Float();
+        Vector3fImmutable endLoc = new Vector3fImmutable(msg.getEndLat(),msg.getEndAlt(),msg.getEndLon());
+        travelLine.setLine(pc.loc.x,pc.loc.z,endLoc.x,endLoc.z);
+        for(AbstractWorldObject awo : WorldGrid.getObjectsInRangePartial(pc.loc, pc.loc.distance(endLoc), MBServerStatics.MASK_BUILDING)){
+            Building building = (Building)awo;
+            Rectangle.Float boundsRect = new Rectangle.Float();
+            boundsRect.setRect(building.getBounds().getHalfExtents().x, building.getBounds().getHalfExtents().y, building.getBounds().getHalfExtents().x * 2,building.getBounds().getHalfExtents().y * 2);
+            if(travelLine.intersects(boundsRect)){
+                //collided with building
+                for(Mesh mesh : building.buildingMeshes)
+                    if(mesh.MeshCollides(travelLine,pc.getCharacterHeight())){
+                        for(Triangle tri : mesh.triangles){
+                            if(tri.collides(travelLine)){
+                                ChatManager.chatSystemInfo(pc, "Collision Detected");
+                                return true;
+                            }
+                        }
+                    }
+
+            }
+        }
+
+
         MovementManager.movement(msg, pc);
         return true;
     }