-int gameloop(void);
-void savegame(void);
-void loadgame(char* filename);
-int issolid(float x, float y);
-int isbrick(float x, float y);
-int isice(float x, float y);
-int isfullbox(float x, float y);
-int rectcollision(itop_type* one, itop_type* two);
-void drawshape(float x, float y, unsigned char c);
-unsigned char shape(float x, float y);
-void bumpbrick(float x, float y);
-void trygrabdistro(float x, float y, int bounciness);
-void trybreakbrick(float x, float y);
-void tryemptybox(float x, float y);
+/** Try to bumb a badguy that might we walking above Tux, thus shaking
+ the tile which the badguy is walking on an killing him this way */