API.md in author_engine-0.1.0 vs API.md in author_engine-0.3.0

@@ -36,13 +36,33 @@
   Current Frames Per Second
 
 ### milliseconds
   Milliseconds since game started
 
+# CollisionDetection
+### bounding_box(sprite_index)
+  returns the bounding_box for sprite
+### sprite_vs_sprite(sprite_index, sprite_x, sprite_y, target_sprite_index, target_x, target_y)
+  determine whether 2 sprites are colliding
+### sprite_vs_level(sprite_index, sprite_x, sprite_y, level)
+  returns an array of level tiles that sprite is colliding with. returns an empty array if non are colliding.
+### colliding_edge(sprite_index, sprite_x, sprite_y, target_sprite_index, target_x, target_y)
+  determine the edge of which sprite is colliding with with target
+### draw_sprite_box(sprite_index, sprite_x, sprite_y)
+  draws sprites bounding box
+### draw_level_boxes(level_index)
+  draws bounding boxes around each tile of level
+### render_bounding_box(sprite_index, box, sprite_x, sprite_y, edges = {}, z = Float::INFINITY)
+  draw bounding box around sprite with optional edges from colliding_edges to show colliding edges
+
 # Graphics
 ### rect(x = 0, y = 0, width = 1, height = 1, color = white, z = 0)
 ### sprite(sprite_sheet_index, x = 0, y = 0, z = 0, color = white)
 ### text(string, x = 0, y = 0, size = 4, z = 0, color = white)
+### level(level_index, z = 0)
+
+### swap(level_index, current_sprite, replacement_sprite)
+  Swap level's current_sprite with replacement_sprite
 
 ### translate(x, y, &block)
   Translate the contents of block by x and y
 ### rotate(angle, around_x = 0, around_y = 0, &block)
   Rotate the contents of block by angle, rotating about at around_x and around_y