From 7e3b59b09399bf8da243fb4122caa2c9c10d2624 Mon Sep 17 00:00:00 2001
From: Kelly Rauchenberger <fefferburbia@gmail.com>
Date: Fri, 5 Mar 2021 09:39:31 -0500
Subject: Implemented circle transition effect (for exit area)

---
 src/effect_system.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'src/effect_system.cpp')

diff --git a/src/effect_system.cpp b/src/effect_system.cpp
index aeccebb..4dff13c 100644
--- a/src/effect_system.cpp
+++ b/src/effect_system.cpp
@@ -37,6 +37,15 @@ void EffectSystem::tick(double dt) {
       cameraShakeOffset_.y() = 0;
     }
   }
+
+  if (circleEffect_ != circleEffectDest_) {
+    circleEffectThus_ += dt;
+    if (circleEffectThus_ >= circleEffectLength_) {
+      circleEffectThus_ = circleEffectLength_;
+    }
+
+    circleEffect_ = (circleEffectDest_ - circleEffectStart_) / circleEffectLength_ * circleEffectThus_ + circleEffectStart_;
+  }
 }
 
 void EffectSystem::fadeScreen(int length, double amount) {
@@ -64,3 +73,10 @@ void EffectSystem::stopShakingCamera() {
   cameraShaking_ = false;
   cameraShakeOffset_ = { 0, 0 };
 }
+
+void EffectSystem::circleTransition(int length, double amount) {
+  circleEffectStart_ = circleEffect_;
+  circleEffectDest_ = amount;
+  circleEffectLength_ = length;
+  circleEffectThus_ = 0;
+}
-- 
cgit 1.4.1