chunk stuff

libswan/include/swan/common.h

 
 static constexpr int TILE_SIZE = 32;
 static constexpr int TICK_RATE = 20;
-static constexpr int CHUNK_HEIGHT = 64;
-static constexpr int CHUNK_WIDTH = 64;
+static constexpr int CHUNK_HEIGHT = 20;
+static constexpr int CHUNK_WIDTH = 32;
 static constexpr int PLACEHOLDER_RED = 245;
 static constexpr int PLACEHOLDER_GREEN = 66;
 static constexpr int PLACEHOLDER_BLUE = 242;

libswan/src/World.cc

 
 		// Don't blow our frame budget on generating chunks,
 		// but generate as many as possible within the budget
-		if (clock.duration() > 0.01)
+		if (clock.duration() > 1 / 120.0)
 			return true;
 		abspos += dir;
 	}