From f3353d09e2c940acc5b8d28aacdddccfecce0660 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miloslav=20=C4=8C=C3=AD=C5=BE?= <tastyfish@seznam.cz>
Date: Mon, 10 Sep 2018 17:40:27 +0200
Subject: [PATCH] Optimize

---
 demo1.cpp |  6 ++++--
 demo2.cpp |  6 ++++--
 demo3.cpp | 13 ++++++++-----
 3 files changed, 16 insertions(+), 9 deletions(-)

diff --git a/demo1.cpp b/demo1.cpp
index c22ecfd..8436ccb 100644
--- a/demo1.cpp
+++ b/demo1.cpp
@@ -812,7 +812,6 @@ int main()
       previousTime = timeNow;
 
       int16_t horizontalStep = (dt * PLAYER_SPEED * (player.mRunning ? 2 : 1)) / 1000;
-      int16_t rotationStep = (dt * PLAYER_ROTATION_SPEED) / 1000;
 
       Vector2D d = angleToDirection(player.mCamera.direction);
 
@@ -882,8 +881,11 @@ int main()
         moveOffset = d;
       }
       else
+      {
+        int16_t rotationStep = (dt * PLAYER_ROTATION_SPEED) / 1000;
         player.mCamera.direction += addition * rotationStep;
-    
+      }    
+
       Unit prevHeight = player.mCamera.height;
 
       moveCameraWithCollision(&player.mCamera,moveOffset,player.mVericalSpeed,
diff --git a/demo2.cpp b/demo2.cpp
index 6a2c33d..d19f15f 100644
--- a/demo2.cpp
+++ b/demo2.cpp
@@ -852,7 +852,6 @@ int main()
       previousTime = timeNow;
 
       int16_t horizontalStep = (dt * PLAYER_SPEED * (pokitto.bBtn() ? 2 : 1)) / 1000;
-      int16_t rotationStep = (dt * PLAYER_ROTATION_SPEED) / 1000;
 
       Vector2D d = angleToDirection(player.mCamera.direction);
 
@@ -921,8 +920,11 @@ int main()
         moveOffset = d;
       }
       else
+      {
+        int16_t rotationStep = (dt * PLAYER_ROTATION_SPEED) / 1000;
         player.mCamera.direction += addition * rotationStep;
-    
+      }    
+
       Unit prevHeight = player.mCamera.height;
 
       moveCameraWithCollision(&player.mCamera,moveOffset,0,
diff --git a/demo3.cpp b/demo3.cpp
index 493a3a8..4fb7d84 100644
--- a/demo3.cpp
+++ b/demo3.cpp
@@ -176,8 +176,8 @@ Unit colorAt(int16_t x, int16_t y)
          heightProfile[absVal(y) % HEIGHT_PROFILE_LENGTH]) / 10,3);
 }
 
-uint16_t previousColumn = 255;
-uint16_t backgroundColumn = 0;
+uint16_t previousColumn = 255; ///< Helper for precomputing background.
+uint16_t backgroundColumn = 0; ///< Precomputed background column.
 
 /**
   Function for drawing a single pixel (like fragment shader).
@@ -185,7 +185,6 @@ uint16_t backgroundColumn = 0;
 inline void pixelFunc(PixelInfo pixel)
 {
   uint8_t c = 0;
-
   int16_t intensity = 0;
 
   if (pixel.isWall)
@@ -263,9 +262,11 @@ int main()
 
   player.setPositionSquare(4,5);
 
+  // init changes
+
   for (uint16_t i = 0; i < MAX_CHANGES; ++i)
   {
-    changes[i].mCoords.x = i;
+    changes[i].mCoords.x = (i + 1) * 1000;
     changes[i].mCoords.y = 0;
     changes[i].mHeight = floorHeightAt(i,0);
   }
@@ -284,7 +285,6 @@ int main()
       previousTime = timeNow;
 
       int16_t horizontalStep = (dt * PLAYER_SPEED * (player.mRunning ? 2 : 1)) / 1000;
-      int16_t rotationStep = (dt * PLAYER_ROTATION_SPEED) / 1000;
 
       Vector2D d = angleToDirection(player.mCamera.direction);
 
@@ -421,7 +421,10 @@ int main()
           moveOffset = d;
         }
         else
+        {
+          int16_t rotationStep = (dt * PLAYER_ROTATION_SPEED) / 1000;
           player.mCamera.direction = wrap(player.mCamera.direction + addition * rotationStep,UNITS_PER_SQUARE);
+        }
       }    
 
       editCounter = max(0, editCounter - 1);