minor changes, a little bit of code cleaning

update_states.c

@@ -7,7 +7,7 @@ void update_title(Game_Data *data)
 
 	updateCamera(&(data->cam), data->current_time - data->last_time);
 	if(KeyDown(K_EXE))
-		switch_to_state(MENU, data);
+		switch_to_state(GAME, data);
 }
 void update_game(Game_Data *data)
 {

wall.c

@@ -93,7 +93,7 @@ void drawWalls(Wall *list, Camera *cam, int nb_lines)
 
 				int i,j, x, y;
 
-				float dist = tmp->d - tmp->h + cam->zoom;
+				float dist = tmp->d + cam->zoom;
 				for(i = 0; i < tmp->h; ++i) {
 					if(dist <= 8) break;
 					ML_line(64 + dist*cos1, 32 + dist*sin1, 64 + dist*cos2, 32 + dist*sin2, BLACK);