Model API documentation

Version: beta

Functions

model.play_anim()

model.play_anim(url,anim_id,playback,[play_properties],[complete_function])

Plays an animation on a model component with specified playback mode and parameters. An optional completion callback function can be provided that will be called when the animation has completed playing. If no function is provided, a model_animation_done message is sent to the script that started the animation. The callback is not called (or message sent) if the animation is cancelled with model.cancel. The callback is called (or message sent) only for animations that play with the following playback modes:

• go.PLAYBACK_ONCE_FORWARD
• go.PLAYBACK_ONCE_BACKWARD
• go.PLAYBACK_ONCE_PINGPONG

PARAMETERS

EXAMPLES

local function anim_done(self, message_id, message, sender)
  if message_id == hash("model_animation_done") then
    if message.animation_id == hash("jump") then
      -- open animation done, chain with "run"
      local properties = { blend_duration = 0.2 }
      model.play_anim(url, "run", go.PLAYBACK_LOOP_FORWARD, properties, anim_done)
    end
  end
end

function init(self)
    local url = msg.url("#model")
    local play_properties = { blend_duration = 0.1 }
    -- first blend during 0.1 sec into the jump, then during 0.2 s into the run animation
    model.play_anim(url, "jump", go.PLAYBACK_ONCE_FORWARD, play_properties, anim_done)
end

model.cancel()

model.cancel(url)

Cancels all animation on a model component.

PARAMETERS

model.get_go()

model.get_go(url,bone_id)

Gets the id of the game object that corresponds to a model skeleton bone. The returned game object can be used for parenting and transform queries. This function has complexity O(n), where n is the number of bones in the model skeleton. Game objects corresponding to a model skeleton bone can not be individually deleted.

PARAMETERS

RETURNS

EXAMPLES

function init(self)
    local parent = model.get_go("player#model", "right_hand")
    msg.post(".", "set_parent", {parent_id = parent})
end

Messages

model_animation_done

This message is sent when a Model animation has finished playing back to the script that started the animation. No message is sent if a completion callback function was supplied when the animation was started. No message is sent if the animation is cancelled with model.cancel(). This message is sent only for animations that play with the following playback modes:

• go.PLAYBACK_ONCE_FORWARD
• go.PLAYBACK_ONCE_BACKWARD
• go.PLAYBACK_ONCE_PINGPONG

EXAMPLES

function on_message(self, message_id, message, sender)
  if message_id == hash("model_animation_done") then
    if message.animation_id == hash("run") and message.playback == go.PLAYBACK_ONCE_FORWARD then
      -- The animation "run" has finished running forward.
    end
  end
end

Properties

cursor

The normalized animation cursor. The type of the property is number. Please note that model events may not fire as expected when the cursor is manipulated directly.

EXAMPLES

function init(self)
  -- Get the cursor value on component "model"
  cursor = go.get("#model", "cursor")
end

function init(self)
  -- Get the current value on component "model"
  go.set("#model", "cursor", 0.0)
  -- Animate the cursor value
  go.animate("#model", "cursor", go.PLAYBACK_LOOP_FORWARD, 1.0, go.EASING_LINEAR, 2)
end

playback_rate

The animation playback rate. A multiplier to the animation playback rate. The type of the property is number.

EXAMPLES

function init(self)
  -- Get the current value on component "model"
  playback_rate = go.get("#model", "playback_rate")
  -- Set the playback_rate to double the previous value.
  go.set("#model", "playback_rate", playback_rate * 2)
end

animation

The current animation set on the component. The type of the property is hash.

EXAMPLES

function init(self)
  -- Get the current animation on component "model"
  local animation = go.get("#model", "animation")
  if animation == hash("run_left") then
    -- Running left. Do something...
  end
end

textureN

The texture hash id of the model. Used for getting/setting model texture for unit 0-7

EXAMPLES

go.property("my_texture", texture("/texture.png"))
function init(self)
  go.set("#model", "texture0", self.my_texture)
end

material

The material used when rendering the model. The type of the property is hash.

EXAMPLES

go.property("my_material", resource.material("/material.material"))
function init(self)
  go.set("#model", "material", self.my_material)
end