From 63c2ced82d62eeb5acaaf0af1a793d82d29709d5 Mon Sep 17 00:00:00 2001
From: Ridwan Sharkar <ridwansharkar@gmail.com>
Date: Tue, 19 Nov 2024 10:58:20 -0500
Subject: [PATCH] physics bro wanted hyperbolic trajectory shnarve

---
 warpgate/Exoplanet.tsx | 68 +++++++++++++++++++++++++++++++++++-------
 1 file changed, 57 insertions(+), 11 deletions(-)

diff --git a/warpgate/Exoplanet.tsx b/warpgate/Exoplanet.tsx
index 06c6e15..949086f 100644
--- a/warpgate/Exoplanet.tsx
+++ b/warpgate/Exoplanet.tsx
@@ -2,6 +2,7 @@ import React, { useRef, useEffect, useMemo, useState } from 'react';
 import { useFrame } from '@react-three/fiber';
 import { Mesh, Vector3, MathUtils, Color } from 'three';
 import PlanetTrail from './PlanetTrail';
+import Explosion from './Explosion';
 
 interface ExoplanetProps {
   onRemove: () => void;
@@ -16,7 +17,12 @@ const Exoplanet: React.FC<ExoplanetProps> = ({ onRemove }) => {
   const colors = useMemo(() => ['#00ffff', '#ff00ff', '#FF7F11', '#ff3366', '#66ff33', '#B8B3E9', '#B8B3E9', '#F87666', '6EFAFB', 'BEEE62', 'CD9FCC', '93FF96', 'B2FFA8' ], []);
   const color = useMemo(() => colors[Math.floor(Math.random() * colors.length)], [colors]);
 
-  const SPAWN_RADIUS = 50; // SPAWN POINT
+  // Constants for simulation
+  const SPAWN_RADIUS = 50;
+  const HYPERBOLIC_THRESHOLD = 40; // GRAVITY INFLUENCE
+  const MIN_DISTANCE = 2;
+  const BASE_GRAVITY_STRENGTH = 0.15; // GRAVITY STRENGTH
+  const CLOSE_APPROACH_THRESHOLD = 8; // APPROACH THRESHOLD
 
   const targetPoint = useMemo(() => {
     const radius = Math.random() * 8; // COLLISION ZONE
@@ -29,7 +35,7 @@ const Exoplanet: React.FC<ExoplanetProps> = ({ onRemove }) => {
     );
   }, []);
 
-  // Generates random position on surface with spawn radius
+  // SPAWNER
   const initialPosition = useMemo(() => {
     const theta = Math.random() * 2 * Math.PI;
     const phi = Math.acos(2 * Math.random() - 1);
@@ -45,17 +51,17 @@ const Exoplanet: React.FC<ExoplanetProps> = ({ onRemove }) => {
     }
   }, [initialPosition]);
 
-  // Velocity vector towards the solar system with variration
+  // Velocity vector towards the solar system with variation
   useEffect(() => {
     const speed = Math.random() * 0.4 + 0.04;
     const direction = targetPoint.clone().sub(initialPosition).normalize();
     
-    // inclination variation ±5° to ±3°
+    // Inclination variation ±5° to ±3°
     const inclinationVariation = MathUtils.degToRad(Math.random() * 6 - 3);
 
     const axis = new Vector3(
       0.9,                        // x component
-      Math.random() * 0.1 - 0.05, //  y variation
+      Math.random() * 0.1 - 0.05, // y variation
       Math.random() * 0.2 - 0.1   // z variation
     ).normalize();
 
@@ -65,45 +71,85 @@ const Exoplanet: React.FC<ExoplanetProps> = ({ onRemove }) => {
 
   // OPACITY
   const [opacity, setOpacity] = useState(1);
+  const [showExplosion, setShowExplosion] = useState(false);
+  const [collisionPoint, setCollisionPoint] = useState<Vector3 | null>(null);
 
   // FADE OUT TIMER
   useEffect(() => {
     const fadeOutTimer = setTimeout(() => {
       setOpacity(0);
-      // Remove  after fade-out duration
+      // Remove after fade-out duration
       const removeTimer = setTimeout(() => {
         onRemove();
       }, 1000); // 1000 ms = 1 second
 
       return () => clearTimeout(removeTimer);
-    }, 15000); // 20000 ms = 20 seconds
+    }, 15000); // 15000 ms = 15 seconds
 
     return () => clearTimeout(fadeOutTimer);
   }, [onRemove]);
 
   useFrame(() => {
     if (meshRef.current && velocityRef.current) {
-      meshRef.current.position.add(velocityRef.current);    // Update position
+      meshRef.current.position.add(velocityRef.current);
+      
+      // Proximity detection to the Sun 
+      const distanceToSun = meshRef.current.position.length();
+      
+      // Check for collision with sun
+      if (distanceToSun < MIN_DISTANCE) {
+        setCollisionPoint(meshRef.current.position.clone());
+        setShowExplosion(true);
+        setTimeout(() => {
+          onRemove();
+        }, 1500); // 1.5 seconds matching explosion duration
+        return;
+      }
+
+      // Apply continuous gravitational force when within threshold
+      if (distanceToSun < HYPERBOLIC_THRESHOLD) {
+        // Enhanced gravity when very close to sun
+        let gravityStrength = BASE_GRAVITY_STRENGTH;
+        if (distanceToSun < CLOSE_APPROACH_THRESHOLD) {
+          // Exponentially increase gravity strength for close approaches
+          gravityStrength *= (CLOSE_APPROACH_THRESHOLD / distanceToSun) ** 1.5;
+        }
+
+        const gravityMultiplier = gravityStrength / (distanceToSun * distanceToSun);
+        const gravity = meshRef.current.position.clone()
+          .normalize()
+          .multiplyScalar(-gravityMultiplier);
+        
+        velocityRef.current.add(gravity);
+      }
     }
   });
 
   return (
     <group>
-      {/* Exoplanet Mesh */}
       <mesh ref={meshRef}>
         <sphereGeometry args={[size, 32, 32]} />
         <meshStandardMaterial color={new Color(color)} transparent opacity={opacity} />
       </mesh>
 
-      {/* Trail Effect */}
       <PlanetTrail
         color={new Color(color)}
         size={size}
         meshRef={meshRef}
         orbitRadius={10} 
         orbitSpeed={0.025} 
-        opacity={opacity} // to synchornize fade-out
+        opacity={opacity}
       />
+
+      {showExplosion && collisionPoint && (
+        <Explosion
+          position={collisionPoint}
+          color={color}
+          size={size * 2}
+          duration={1.5}
+          particleCount={30}
+        />
+      )}
     </group>
   );
 };