From 3f97ebf518db01cc93f84e20edcb074669c58705 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miloslav=20=C4=8C=C3=AD=C5=BE?= <drummyfish@disroot.org>
Date: Sat, 24 Oct 2020 19:10:42 +0200
Subject: [PATCH] Optimize

---
 game.h     | 10 ++++++----
 levels.h   | 14 +++++++-------
 main_sdl.c |  2 +-
 3 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/game.h b/game.h
index 344697b..9d0adc7 100755
--- a/game.h
+++ b/game.h
@@ -984,15 +984,17 @@ void SFG_pixelFunc(RCL_PixelInfo *pixel)
       );
 
   #if SFG_BACKGROUND_BLUR != 0
-
-SFG_backgroundBlurIndex = (SFG_backgroundBlurIndex + 1) % 8;
-//    SFG_backgroundBlurIndex = (SFG_backgroundBlurIndex + 1) % 0x07;
+      SFG_backgroundBlurIndex = (SFG_backgroundBlurIndex + 1) % 8;
   #endif
 #else
     color = 1;
 #endif
   }
 
+#if SFG_RAYCASTING_SUBSAMPLE == 1
+  // the other version will probably get optimized to this, but just in case
+  SFG_setGamePixel(pixel->position.x,pixel->position.y,color);
+#else
   RCL_Unit screenX = pixel->position.x * SFG_RAYCASTING_SUBSAMPLE;
 
   for (int_fast8_t i = 0; i < SFG_RAYCASTING_SUBSAMPLE; ++i)
@@ -1000,6 +1002,7 @@ SFG_backgroundBlurIndex = (SFG_backgroundBlurIndex + 1) % 8;
     SFG_setGamePixel(screenX,pixel->position.y,color);
     screenX++;
   }
+#endif
 }
 
 /**
@@ -1254,7 +1257,6 @@ RCL_Unit SFG_floorHeightAt(int16_t x, int16_t y)
         doorHeight = doorHeight != (0xff & SFG_DOOR_VERTICAL_POSITION_MASK)    ? 
           doorHeight * SFG_DOOR_HEIGHT_STEP : RCL_UNITS_PER_SQUARE;
 
-
         break;
       }
     }
diff --git a/levels.h b/levels.h
index 7028494..e370369 100644
--- a/levels.h
+++ b/levels.h
@@ -155,16 +155,16 @@ static inline SFG_TileDefinition SFG_getMapTile
   uint8_t *properties
 )
 {
-  if (x < 0 || x >= SFG_MAP_SIZE || y < 0 || y >= SFG_MAP_SIZE)
+  if (x >= 0 && x < SFG_MAP_SIZE && y >= 0 && y < SFG_MAP_SIZE)
   {
-    *properties = SFG_TILE_PROPERTY_NORMAL;
-    return SFG_OUTSIDE_TILE;
+    uint8_t tile = level->mapArray[y * SFG_MAP_SIZE + x];
+
+    *properties = tile & 0xc0;
+    return level->tileDictionary[tile & 0x3f];
   }
 
-  uint8_t tile = level->mapArray[y * SFG_MAP_SIZE + x];
-
-  *properties = tile & 0xc0;
-  return level->tileDictionary[tile & 0x3f];
+  *properties = SFG_TILE_PROPERTY_NORMAL;
+  return SFG_OUTSIDE_TILE;
 }
 
 #define SFG_NUMBER_OF_LEVELS 10
diff --git a/main_sdl.c b/main_sdl.c
index 0779d94..b45aba7 100644
--- a/main_sdl.c
+++ b/main_sdl.c
@@ -34,7 +34,7 @@
 // #define SFG_TIME_MULTIPLIER 512
 
 // uncomment for perfomance debug 
-//#define SFG_CPU_LOAD(percent) printf("CPU load: %d%\n",percent);
+#define SFG_CPU_LOAD(percent) printf("CPU load: %d%\n",percent);
 
 #ifndef __EMSCRIPTEN__
   #ifndef GAME_LQ