From 7fd6df50cee18db3b1496785339152ffaf578605 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jon=20Vald=C3=A9s?= <jon@valdes.cc>
Date: Thu, 27 Feb 2020 08:57:24 +0100
Subject: [PATCH] Exposed setting for particle density

---
 src/renderer/cursor_renderer/cursor_vfx.rs | 4 +---
 src/renderer/cursor_renderer/mod.rs        | 3 +++
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/renderer/cursor_renderer/cursor_vfx.rs b/src/renderer/cursor_renderer/cursor_vfx.rs
index b8b5662..b6150a8 100644
--- a/src/renderer/cursor_renderer/cursor_vfx.rs
+++ b/src/renderer/cursor_renderer/cursor_vfx.rs
@@ -181,8 +181,6 @@ impl ParticleTrail {
     }
 }
 
-const PARTICLE_DENSITY: f32 = 0.008;
-
 impl CursorVfx for ParticleTrail {
     fn update(&mut self, settings: &CursorSettings, current_cursor_dest: Point, dt: f32) -> bool {
         // Update lifetimes and remove dead particles
@@ -209,7 +207,7 @@ impl CursorVfx for ParticleTrail {
             let travel_distance = travel.length();
             // Increase amount of particles when cursor travels further
             // TODO -- particle count should not depend on font size
-            let particle_count = (travel_distance.powf(1.5) * PARTICLE_DENSITY) as usize;
+            let particle_count = (travel_distance.powf(1.5) * settings.vfx_particle_density * 0.01) as usize;
 
             let prev_p = self.previous_cursor_dest;
 
diff --git a/src/renderer/cursor_renderer/mod.rs b/src/renderer/cursor_renderer/mod.rs
index ae5a1d4..518acf5 100644
--- a/src/renderer/cursor_renderer/mod.rs
+++ b/src/renderer/cursor_renderer/mod.rs
@@ -26,6 +26,7 @@ pub struct CursorSettings {
     vfx_mode: cursor_vfx::VfxMode,
     vfx_opacity: f32,
     vfx_particle_lifetime: f32,
+    vfx_particle_density: f32,
 }
 
 pub fn initialize_settings() {
@@ -36,6 +37,7 @@ pub fn initialize_settings() {
         vfx_mode: cursor_vfx::VfxMode::Disabled,
         vfx_opacity: 200.0,
         vfx_particle_lifetime: 1.2,
+        vfx_particle_density: 0.8,
     });
     
     register_nvim_setting!("cursor_animation_length", CursorSettings::animation_length);
@@ -43,6 +45,7 @@ pub fn initialize_settings() {
     register_nvim_setting!("cursor_vfx_mode", CursorSettings::vfx_mode);
     register_nvim_setting!("cursor_vfx_opacity", CursorSettings::vfx_opacity);
     register_nvim_setting!("cursor_vfx_particle_lifetime", CursorSettings::vfx_particle_lifetime);
+    register_nvim_setting!("cursor_vfx_particle_density", CursorSettings::vfx_particle_density);
 }
 
 // ----------------------------------------------------------------------------