public override Playable CreatePlayable(PlayableGraph graph, GameObject owner)
{
var playable = ScriptPlayable <AICommandBehaviour> .Create(graph, template);
AICommandBehaviour clone = playable.GetBehaviour();
clone.commandType = commandType;
clone.targetPosition = targetPosition;
clone.targetUnit = targetUnit.Resolve(graph.GetResolver());
return(playable);
}
//Happens every frame in Edit mode.
//Uses transform.position of the units to approximate what they would do in Play mode with the NavMeshAgent
private void ProcessEditModeFrame(Playable playable)
{
previousInputFinalPositions = defaultPositions;
int inputCount = playable.GetInputCount();
int unitCount = trackBinding.units.Count;
for (int i = 0; i < inputCount; i++)
{
float inputWeight = playable.GetInputWeight(i);
ScriptPlayable <AICommandBehaviour> inputPlayable = (ScriptPlayable <AICommandBehaviour>)playable.GetInput(i);
AICommandBehaviour input = inputPlayable.GetBehaviour();
//Some actionTypes have special needs
switch (input.commandType)
{
case AICommand.CommandType.Die:
case AICommand.CommandType.Stop:
//Do nothing if it's a Die or Stop action
continue; //Will skip to the next input clip in the for loop above
case AICommand.CommandType.AttackTarget:
//Force the finalPosition to the attack target in case of an Attack action
if (input.targetUnit != null)
{
input.targetPosition = input.targetUnit.transform.position;
}
break;
}
//Create an array of final positions for the entire Platoon
finalPositions = trackBinding.GetFormationPositions(input.targetPosition);
if (inputWeight > 0f)
{
double progress = inputPlayable.GetTime() / inputPlayable.GetDuration();
newPositions = new Vector3[unitCount];
for (int j = 0; j < unitCount; j++)
{
newPositions[j] = Vector3.Lerp(previousInputFinalPositions[j], finalPositions[j], (float)progress);
}
trackBinding.SetPositions(newPositions);
continue;
}
else
{
previousInputFinalPositions = finalPositions; //cached to act as initial position for the next input
}
}
}
//Happens in Play mode
//Uses the NavMeshAgent to control the units, delegating their movement and animations to the AI
private void ProcessPlayModeFrame(Playable playable)
{
int inputCount = playable.GetInputCount();
for (int i = 0; i < inputCount; i++)
{
float inputWeight = playable.GetInputWeight(i);
ScriptPlayable <AICommandBehaviour> inputPlayable = (ScriptPlayable <AICommandBehaviour>)playable.GetInput(i);
AICommandBehaviour input = inputPlayable.GetBehaviour();
//Make the Unit script execute the command
if (inputWeight > 0f)
{
if (!input.commandExecuted)
{
AICommand c = new AICommand(input.commandType, input.targetPosition, input.targetUnit);
trackBinding.ExecuteCommand(c);
input.commandExecuted = true; //this prevents the command to be executed every frame of this clip
}
}
}
}