using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using System.Diagnostics;

public class SpawnTester : MonoBehaviour

{

Rect spawnZone;

Rect spawnExlusion;

Rect spawn1;

float area1;

Rect spawn2;

float area2;

Rect spawn3;

float area3;

Rect spawn4;

float area4;

float sumArea;

Stopwatch simple;

Stopwatch complex;

Vector2[] simpleSpawns;

Vector2[] complexSpawns;

int ci = 0;

int si = 0;

// Start is called before the first frame update

void Start()

{

spawnZone = new Rect(-120, -200, 240, 400);

spawnExlusion = new Rect(-80, -160, 160, 320);

spawn1 = new Rect(-120, -200, 240, 40);

area1 = spawn1.width * spawn1.height;

spawn2 = new Rect(-120, 160, 240, 40);

area2 = spawn2.width * spawn2.height;

spawn3 = new Rect(-120, -160, 40, 320);

area3 = spawn3.width * spawn3.height;

spawn4 = new Rect(80, -160, 40, 320);

area4 = spawn4.width * spawn4.height;

sumArea = area1 + area2 + area3 + area4;

simpleSpawns = new Vector2[10000000];

simple = new Stopwatch();

simple.Start();

for(int i = 0; i < 10000000; i++)

{

simpleSpawns[i] = spawnSimple();

}

simple.Stop();

UnityEngine.Debug.Log("simpleSpawn 10000000 times took : " + simple.ElapsedMilliseconds + " Milliseconds");

complexSpawns = new Vector2[10000000];

complex = new Stopwatch();

complex.Start();

for (int i = 0; i < 10000000; i++)

{

complexSpawns[i] = spawnComplex();

}

complex.Stop();

UnityEngine.Debug.Log("complexSpawn 10000000 times took : " + complex.ElapsedMilliseconds + " Milliseconds");

}

// Update is called once per frame

void Update()

{

DrawRectGizmo(spawn1, Color.red);

DrawRectGizmo(spawn2, Color.green);

DrawRectGizmo(spawn3, Color.blue);

DrawRectGizmo(spawn4, Color.yellow);

DrawCrossGizmo(simpleSpawns[si], Color.red);

DrawCrossGizmo(complexSpawns[ci], Color.blue);

si++;

ci++;

si = si % 10000000;

ci = ci % 10000000;

}

Vector2 spawnSimple()

{

bool spawning = true;

while(spawning)

{

Vector2 pos = new Vector2(Random.Range(spawnZone.xMin, spawnZone.xMax), Random.Range(spawnZone.yMin, spawnZone.yMax));

if (!spawnExlusion.Contains(pos))

{

return pos;

}

}

return Vector2.zero;

}

Vector2 spawnComplex()

{

float rand = Random.Range(0, sumArea);

if (rand < area1)

{

return new Vector2(Random.Range(spawn1.xMin, spawn1.xMax), Random.Range(spawn1.yMin, spawn1.yMax));

}

else if( rand < area1+area2)

{

return new Vector2(Random.Range(spawn2.xMin, spawn2.xMax), Random.Range(spawn2.yMin, spawn2.yMax));

}

else if( rand < area1+area2+area3)

{

return new Vector2(Random.Range(spawn3.xMin, spawn3.xMax), Random.Range(spawn3.yMin, spawn3.yMax));

}

else

{

return new Vector2(Random.Range(spawn4.xMin, spawn4.xMax), Random.Range(spawn4.yMin, spawn4.yMax));

}

}

void DrawRectGizmo(Rect rect, Color col)

{

UnityEngine.Debug.DrawLine(new Vector3(rect.xMin, rect.yMin), new Vector3(rect.xMin, rect.yMax), col);

UnityEngine.Debug.DrawLine(new Vector3(rect.xMin, rect.yMax), new Vector3(rect.xMax, rect.yMax), col);

UnityEngine.Debug.DrawLine(new Vector3(rect.xMax, rect.yMax), new Vector3(rect.xMax, rect.yMin), col);

UnityEngine.Debug.DrawLine(new Vector3(rect.xMax, rect.yMin), new Vector3(rect.xMin, rect.yMin), col);

}

void DrawCrossGizmo(Vector3 pos, Color col)

{

UnityEngine.Debug.DrawLine(new Vector3(pos.x - 0.1f, pos.y), new Vector3(pos.x + 0.1f, pos.y),col,0.5f);

UnityEngine.Debug.DrawLine(new Vector3(pos.x, pos.y - 0.1f), new Vector3(pos.x, pos.y + 0.1f),col,0.5f);

}

}

so I decided to test this,

Simplespawn 1000000 times took : 222 milliseconds;
Complexspawn 1000000 times took: 142 milliseconds;

I'll give that theres caviats here where a smaller exclusion zone could cause the simple spawn to reject fewer cases and thus be faster. and my code might not be the best.

edit: added a little code to draw debug crosses in the spawn spots generated by the 2 methods. and upped the amount of spawn points for both simple and complex methods.

u/LoosePomegranate1585, Feel free to nab this code and adjust it to suit your purposes.