DrawSystem:draw_entities

Draws all entities. This involves:

1. Sorting all Drawable components according to their draw order.
2. Iterating through all Drawable components and calling their draw() method. These draws are:
   • Surrounded by calls to the associated draw effects
   • Offset by the entity’s position if it has a Body
   • Offset by the Drawable’s offset

Usage

draw_system:draw_entities()

Examples

local MyScene = Class("MyScene", crystal.Scene);

MyScene.init = function(self)
  self.ecs = crystal.ECS:new();
  self.draw_system = self.ecs:add_system(crystal.DrawSystem);
end

MyScene.update = function(self, delta_time)
  self.draw_system:update_drawables(delta_time);
end

MyScene.draw = function(self)
  self.draw_system:draw_entities();
end