Snapshot

1 files changed, 30 insertions, 0 deletions

diff --git a/collisions.lua b/collisions.lua
new file mode 100644
index 0000000..fb7aca7
--- /dev/null
+++ b/collisions.lua
@@ -0,0 +1,30 @@
+sw, sh = 8, 8
+function is_colliding(a, b)
+  ax1, bx1 = a.pos.x, b.pos.x
+  ax2, bx2 = ax1 + sw, bx1 + sw
+  ay1, by1 = a.pos.y, b.pos.y
+  ay2, by2 = ay1 + sh, by1 + sh
+  return (ax1 < bx2 and ax2 > bx1
+        and ay1 < by2 and ay2 > by1)
+end
+
+function handle_collision(a, b)
+--   if b.typ == types.enemy then
+--     --print(b.id,100,100)
+--   end
+end
+
+function run_collisions()
+  collidable = filter(World, function (e) return e.collision end)
+  for _ai, a in ipairs(collidable) do
+    for _bi, b in ipairs(collidable) do
+      if a.id == b.id then
+        goto continue
+      end
+      if is_colliding(a, b) then
+        handle_collision(a, b)
+      end
+      ::continue::
+    end
+  end
+end
\ No newline at end of file