Thanks a lot for posting this tutorial, I used it to start my first mod.
I think there were a few changes in the 0.12.26 version of entity.lua:
- The energy_per_hit_point attribute now seems to be required:
Code: Select all
    dying_explosion = "medium-explosion",
    energy_per_hit_point = 1,
    crash_trigger = crash_trigger(),
Code: Select all
    animation =
    {
      filename = "__Mod__/graphics/entity/bomber-sheet.png",
      priority = "high",
      width = 140,
      height = 110,
	  frame_count = 1,
	  line_length = 8,     
	  direction_count = 64,
	  shift={0.5, 0},
    },





