Implement multiple biomes.

player.lua

@@ -1,5 +1,5 @@
--- this module assumes all objects and the player are
--- 1x1 sprite in size. larger sprites are not currently supported
+-- This module assumes all objects and the player are 1x1 sprite in size.
+-- Larger sprites will probably work for objects, but not for the player.
 --
 -- exported variables:
 --   player_pos # integer tuple {x,y}. absolute position of the player on the
@@ -10,10 +10,6 @@
 --              #   each element can be -1 (up or left), 0 (neutral),
 --              #   or 1 (down or right)
 --
--- exported constants:
---   player_lookup # used internally to look up the sprite to render for a
---                 #   given facing
---
 -- functions:
 --   init_player({x,y}) # call this in _init(). Sets player starting position,
 --                      #   assumes the top-left of the pico-8 map is currently
@@ -23,14 +19,9 @@
 --   draw_player()      # call in _draw(). Draws the player sprite.
 
 function init_player(start_pos)
-   -- camera_pos is the relative coordinate of the camera
-   -- on the currently generated map chunk. player_pos is
-   -- the *absolute* world coordinates of the player.
    player_pos = start_pos
    camera_pos = {start_pos[1]-8, start_pos[2]-8}
 
-   -- [1] is vertical facing, [2] is horizontal, -1 is up/left, 0 is neutral,
-   -- and 1 is down/right
    facing = {1, 0}
 
    -- this is a constant for looking up player sprites by facing