From 082a87db4e666636b1edcac1b8f45d2bcaf50023 Mon Sep 17 00:00:00 2001
From: MihailRis <mexaruc@gmail.com>
Date: Sun, 3 Nov 2024 02:26:11 +0300
Subject: [PATCH] update particles randomizer

---
 src/graphics/render/Emitter.cpp           | 2 +-
 src/graphics/render/Emitter.hpp           | 3 +++
 src/graphics/render/ParticlesRenderer.cpp | 4 ++--
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/graphics/render/Emitter.cpp b/src/graphics/render/Emitter.cpp
index fd3ac978..e4fb9d47 100644
--- a/src/graphics/render/Emitter.cpp
+++ b/src/graphics/render/Emitter.cpp
@@ -39,7 +39,7 @@ void Emitter::update(float delta, std::vector<Particle>& particles) {
         // spawn particle
         Particle particle = prototype;
         particle.emitter = this;
-        particle.random = rand();
+        particle.random = random.rand32();
         particle.position = position;
         particle.velocity += glm::ballRand(1.0f) * explosion;
         particles.push_back(std::move(particle));
diff --git a/src/graphics/render/Emitter.hpp b/src/graphics/render/Emitter.hpp
index 2582e969..431d2e49 100644
--- a/src/graphics/render/Emitter.hpp
+++ b/src/graphics/render/Emitter.hpp
@@ -7,6 +7,7 @@
 #include "typedefs.hpp"
 
 #include "maths/UVRegion.hpp"
+#include "maths/util.hpp"
 
 class Emitter;
 
@@ -50,6 +51,8 @@ class Emitter {
     float timer = 0.0f;
     /// @brief Random velocity magnitude applying to spawned particles
     glm::vec3 explosion {8.0f};
+
+    util::PseudoRandom random;    
 public:
     ParticleBehaviour behaviour;
 
diff --git a/src/graphics/render/ParticlesRenderer.cpp b/src/graphics/render/ParticlesRenderer.cpp
index 4036dd90..e7b72c00 100644
--- a/src/graphics/render/ParticlesRenderer.cpp
+++ b/src/graphics/render/ParticlesRenderer.cpp
@@ -22,7 +22,7 @@ ParticlesRenderer::ParticlesRenderer(
     auto region = util::get_texture_region(assets, "blocks:grass_top", "");
     emitters.push_back(std::make_unique<Emitter>(glm::vec3(0, 80, 0), Particle {
         nullptr, 0, glm::vec3(), glm::vec3(), 5.0f, region.region
-    },region.texture, 0.002f, -1));
+    }, region.texture, 0.002f, -1));
 }
 
 ParticlesRenderer::~ParticlesRenderer() = default;
@@ -71,7 +71,7 @@ void ParticlesRenderer::renderParticles(const Camera& camera, float delta) {
                 light = MainBatch::sampleLight(
                     particle.position, chunks, backlight
                 );
-                light *= 0.7f + (particle.random % 300) * 0.001f;
+                light *= 0.8f + (particle.random % 200) * 0.001f;
             }
             batch->quad(
                 particle.position,