From 142e00794097dfb78c4b758a2d39d26fae070092 Mon Sep 17 00:00:00 2001
From: Star Rauchenberger <fefferburbia@gmail.com>
Date: Sat, 13 Mar 2021 07:25:23 -0500
Subject: Created Interpolation abstraction

This simplifies EffectSystem quite a bit, and will be useful in other classes.
---
 src/effect_system.cpp | 44 ++++++--------------------------------------
 1 file changed, 6 insertions(+), 38 deletions(-)

(limited to 'src/effect_system.cpp')

diff --git a/src/effect_system.cpp b/src/effect_system.cpp
index 4dff13c..9b24d3e 100644
--- a/src/effect_system.cpp
+++ b/src/effect_system.cpp
@@ -4,23 +4,9 @@
 void EffectSystem::tick(double dt) {
   if (game_.isGameplayPaused()) return;
 
-  if (screenFade_ != screenFadeDest_) {
-    screenFadeThus_ += dt;
-    if (screenFadeThus_ >= screenFadeLength_) {
-      screenFadeThus_ = screenFadeLength_;
-    }
-
-    screenFade_ = (screenFadeDest_ - screenFadeStart_) / screenFadeLength_ * screenFadeThus_ + screenFadeStart_;
-  }
-
-  if (mapFade_ != mapFadeDest_) {
-    mapFadeThus_ += dt;
-    if (mapFadeThus_ >= mapFadeLength_) {
-      mapFadeThus_ = mapFadeLength_;
-    }
-
-    mapFade_ = (mapFadeDest_ - mapFadeStart_) / mapFadeLength_ * mapFadeThus_ + mapFadeStart_;
-  }
+  screenFade_.tick(dt);
+  mapFade_.tick(dt);
+  circleEffect_.tick(dt);
 
   if (cameraShaking_) {
     cameraShakeTimer_.accumulate(dt);
@@ -37,29 +23,14 @@ 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) {
-  screenFadeStart_ = screenFade_;
-  screenFadeDest_ = amount;
-  screenFadeLength_ = length;
-  screenFadeThus_ = 0;
+  screenFade_.start(length, amount);
 }
 
 void EffectSystem::fadeMap(int length, double amount) {
-  mapFadeStart_ = mapFade_;
-  mapFadeDest_ = amount;
-  mapFadeLength_ = length;
-  mapFadeThus_ = 0;
+  mapFade_.start(length, amount);
 }
 
 void EffectSystem::shakeCamera(int period) {
@@ -75,8 +46,5 @@ void EffectSystem::stopShakingCamera() {
 }
 
 void EffectSystem::circleTransition(int length, double amount) {
-  circleEffectStart_ = circleEffect_;
-  circleEffectDest_ = amount;
-  circleEffectLength_ = length;
-  circleEffectThus_ = 0;
+  circleEffect_.start(length, amount);
 }
-- 
cgit 1.4.1