06 SendingAttributeValues - project-SIMPLE/simple.toolchain GitHub Wiki
Link to the example model: LinkToUnity/Models/Code Examples/Send Dynamic data.gaml
The SIMPLE toolkit allows to send the values of attributes linked to geometries/agents
For example, to send the value of the attribute type linked to the dynamic_punctual_agent species:
species dynamic_punctual_agent parent: moving_agent{
int type <- rnd(2);
}To do this, we first have to send in GAMA the values for each agent of the attribute with the add_geometries_to_send action. Attributes as to be sent as a map with key: the name of the attributes, value: the list of values of the attributes for each agent.
reflex send_agents when: not empty(unity_player) {
// add attributes to send to Unity. We send one attribute "type" for the dynamic_punctual_agent agents,
// that will have for name "type" in uniy and which is an integer (between 0 and 2 for each dynamic_punctual_agent).
// get the value of type for each agent.
list<int> type_agents <- dynamic_punctual_agent collect each.type;
//put this list value in a map (several attributes can be send at the same time).
map<string,list<int>> atts <- ["type":: type_agents];
//at every step, we send the dynamic_punctual_agent agents with the up_car properties and the attributes "atts"
do add_geometries_to_send(dynamic_punctual_agent,up_car,atts);
//we want to keep the dynamic_geometry_agent in their current state in Unity, so we add them in the geometries_to_keep list
do add_geometries_to_keep(dynamic_geometry_agent);
}In Unity, we have first to add the attribute (with its type) in the Attributes class (Assets/Scripts/Gama Provider/Serialization). The name of the attribute variable have to be the same and the key in the add_geometries_to_send action.
[System.Serializable]
public class Attributes
{
public int type;
}Then, in Unity's SimulationManager class (or any class that inherits from SimulationManager), we override the ManageAttributes method. In this example, we change the color of the corresponding game object according to the value of the type attribute.
public class ReceiveDynamicDataExample : SimulationManager
{
//read the attributes send by GAMA and use it to define the color of the car objects
protected override void ManageAttributes(List<Attributes> attributes)
{
for (int i = 0; i < infoWorld.names.Count; i++)
{
string name = infoWorld.names[i];
int type = attributes[i].type;
List<object> o = geometryMap[name];
GameObject obj = (GameObject)o[0];
if (type == 0)
{
ChangeColor(obj, Color.white);
}
else if (type == 1)
{
ChangeColor(obj, Color.blue);
}
else if (type == 2)
{
ChangeColor(obj, Color.red);
}
}
}
}