# TODO-drawing
-sw blitter
-input
-joystick?
-entity system
-free/used lists
-player
-sound
-SB samples
-MOD player?
-ADLIB music?
-data (embedded in EXE)
-map data: JSON
-screens
-menu
-game over
# REVIEW-review use of the timer
-tick frequency is 18.2 times per second
-use dosemu instead of dosbox?