Move preloader update code to new function preloaderlogic()

Otherwise the preloader will go by way too quickly.

desktop_version/src/main.cpp

@@ -400,6 +400,7 @@ int main(int argc, char *argv[])
                 switch(game.gamestate)
                 {
                 case PRELOADER:
+                    preloaderlogic();
                     break;
 #if !defined(NO_CUSTOM_LEVELS)
                 case EDITORMODE:

desktop_version/src/preloader.cpp

@@ -9,7 +9,7 @@ int pre_darkcol=0, pre_lightcol=0, pre_curcol=0, pre_coltimer=0, pre_offset=0;
 int pre_frontrectx=30, pre_frontrecty=20, pre_frontrectw=260, pre_frontrecth=200;
 int pre_temprectx=0, pre_temprecty=0, pre_temprectw=320, pre_temprecth=240;
 
-void preloaderrender()
+void preloaderlogic()
 {
   if (pre_transition < 30) pre_transition--;
   if(pre_transition>=30){
@@ -25,6 +25,12 @@ void preloaderrender()
       pre_curcol = (pre_curcol + int(fRandom() * 5.0f)) % 6;
       pre_coltimer = 8;
     }
+  }
+}
+
+void preloaderrender()
+{
+  if(pre_transition>=30){
     switch(pre_curcol) {
     case 0:
       pre_lightcol = graphics.RGBflip(0xBF,0x59,0x6F);

desktop_version/src/preloader.h

@@ -7,4 +7,6 @@
 
 void preloaderrender();
 
+void preloaderlogic();
+
 #endif /* PRELOADER_H */