Angelscript - Initialization of List of Classes

Ocelot · Post by **Ocelot** » Mon Jun 19, 2017 5:07 pm

PowerVision 2.9.10481

Working on some menu's in Angelscript.

Trying to create a class that in some ways mimics the functionality of the MPC-20 and MPC-10 menu system, right now I am just working on data types and filling the initial list of classes with data, with functions within the class to follow.

I believe I am having a syntax issue, see comment under void menu script.

class menu
{
int32 rowid;
string menu_type;
string name;
int8 unit_label;
int32 decimals;
int32 min;
int32 max;
int32 increment;
bool loop;
int8 advanced;
string[] text_list;
}

void $menu script$ ()
{
menu[] main_menu;

//How do we initialize main_menu with data?
}

I can do

main_menu[0].rowid = 1;

but I was looking to initialize it with something more like

{
{0,"numerical","setpoint1","ohms",1,0,100,1,true,0,""},
{1,"numerical","setpoint2","ohms",1,0,100,1,true,0,""},
{2,"numerical","setpoint3","ohms",1,0,100,1,true,0,""},
{3,"numerical","setpoint4","ohms",1,0,100,1,true,0,""}
}

If this was C# I would be looking to create a list of class objects, or something like the following.

public class RandomData
{
public string Data1 { set; get; }
public string Data2 { set; get; }
public string Data3 { set; get; }
}

List<RandomData> data = new List<RandomData>
{
new RandomData(){ Data1 = 1, Data2 = 2, Data3 = 3 },
new RandomData(){ Data1 = 4, Data2 = 5, Data3 = 6 },
new RandomData(){ Data1 = 7, Data2 = 8, Data3 = 9 }
};

Post by **boyce** » Tue Jun 20, 2017 11:35 am

It doesn't look like Angelscript supports initialization lists for classes. It is possible to make a method that assigns values.

Code: Select all

class menu
{
	int32 rowid;
	string menu_type;
	string name;
	int8 unit_label;
	int32 decimals;
	int32 min;
	int32 max;
	int32 increment;
	bool loop;
	int8 advanced;
	string[] text_list;
	
	void set_menu(int32 rowid, string menu_type, string name)
	{
		this.rowid = rowid;
		this.menu_type = menu_type;
		this.name = name;
	}
}

void $menu script$ ()
{
	menu[] main_menu(3);

//How do we initialize main_menu with data?

	main_menu[0].rowid = 1;
	main_menu[0].set_menu(0, "numerical", "setpoint1");
	main_menu[1].set_menu(1, "numerical", "setpoint2");
	main_menu[2].set_menu(2, "numerical", "setpoint3");
}

PowerVision 2.9 Patch 1 has been updated to the latest version of Angelscript which has better class support. The plan is to have Patch 1 available by the end of June.

Ocelot · Post by **Ocelot** » Tue Jun 20, 2017 2:52 pm

Boyce,

This will work, I really appreciate it.

Ocelot · Post by **Ocelot** » Wed Jun 21, 2017 1:56 pm

Hi,

Another question, I was attempting to do something like the following thread, but assigning the variableIDs into an uint array rather than a uint variable.

viewtopic.php?f=7&t=1420&p=4071&hilit=variableIDs#p4071

I seem to be having some issues with assignment.

snippet of non working angelscript,

Code: Select all

class menu_variables
{
	uint[] numbers_assigned(uint[] numbers)
	{
		//Cannot seem to assign VariableIDs to array?
		numbers[0]  = VariableIDs.MB1_one;
		numbers[1]  = VariableIDs.MB1_two;
		numbers[2]  = VariableIDs.MB1_three;
		numbers[3]  = VariableIDs.MB1_four;
		numbers[4]  = VariableIDs.MB1_five;
		return numbers;
	}
	
	//Have not tested this yet
	float[] numbers_update_read(float[] num, uint[] numbers)
	{
		uint index = 0;
		while(index <= numbers.length())
		{
			smRead(numbers[index],num[index]);
			index++;
		}
		return num;
	}
	
	//Have not tested this yet
	float[] numbers_update_write(float[] num, uint[] numbers)
	{
		uint index = 0;
		while(index <= numbers.length())
		{
			smWrite(numbers[index],num[index]);
			index++;
		}
		return num;
	}
}

numbers_assigned is being called as follows,

Code: Select all

void $Menu Init$ () 
{
	uint[] numbers;

	//Create an object from class for variable read/write access
	menu_variables var;
	
	//Get the number VariableIDs listing
	var.numbers_assigned(numbers);
}

I noticed that if I edit numbers_assigned I can assign it to a uint variable, and print it to the debug window, but not an indexed array value

Code: Select all

	uint[] numbers_assigned(uint[] numbers)
	{
		uint varid = VariableIDs.MB1_one;
		PrintNumber(varid); // this assigns and prints the variableID value.
		
		//Cannot seem to assign VariableIDs to array?
		numbers[0]  = VariableIDs.MB1_one;
		numbers[1]  = VariableIDs.MB1_two;
		numbers[2]  = VariableIDs.MB1_three;
		numbers[3]  = VariableIDs.MB1_four;
		numbers[4]  = VariableIDs.MB1_five;
		return numbers;
	}

Some suggestions would be appreciated.

Post by **boyce** » Wed Jun 21, 2017 2:54 pm

Looks like if you pre allocate the array it will work.

Code: Select all

   uint[] numbers(5);

Ocelot · Post by **Ocelot** » Wed Jun 21, 2017 3:01 pm

Boyce,

Pre-allocation of the array took care of the problem

Thank you.

Ocelot · Post by **Ocelot** » Mon Jul 03, 2017 3:35 pm

Additional Question,

When accessing a CharArray in a list, does the following apply?

List Definition

Name: list_one
RowID (int)
header (CharArray)
value (float)

Code: Select all

int selected_menu_item = 0; 
string selected_menu_title = " ";
CustomListData data;

//Read in the user selected value
smRead(VariableIDs.Number_Selected, selected_menu_item);

//Lookup the row in the table based on the selected index value, assign the information to data
ListManagerGetItem(ListDataType.list_one, selected_menu_item, data);

//Assign the text string to a variable and write it out to the display page
selected_menu_title = data.ReadString(CustomListColumn.list_one_header );
cultureSetString(StringIDs.SelectedMenuTitle, selected_menu_title, true);

Again, thank you for all the help, I don't seem to be having an issue with data.WriteString(), but I am with data.ReadString().

Post by **boyce** » Thu Jul 06, 2017 10:36 am

Just from looking at the code, have you tried the ReadString syntax like this?

Code: Select all

data.ReadString(CustomListColumn.list_one_header, selected_menu_title);

I don't know if it's the same as what you have.

ronaldbroth · Post by **ronaldbroth** » Mon Jul 17, 2017 11:37 am

Good morning,

This is probably not the best place to ask this question but this topic had to do with Angelscript and also menus so here we go. WARNING: I am a rookie PV writer so the question I am asking is basic.

I just want to know if I can select/display a specific PAGE via Angelscript.

I have done it so far via Activity Program and assigning UIApp -> ShowView(Main Layer.P15) to a Fire Actions box. I have 26 PAGES so this gets a little long and the way I am determining what PAGE to selected is being done via Angelscript so it would be easier to make it part of the Script program.

Thanks
Ron Roth

Post by **boyce** » Mon Jul 17, 2017 1:43 pm

I had to find out, but it is done like this:

Code: Select all

//---------------------------------------------------------------------------------------------
// Murphy Scripting
// - Leave EventName as $Show Page$ for main script method
//---------------------------------------------------------------------------------------------
void $Show Page$ () 
{
	SendAction(ApplicationIDs.UIApp, ActionIDs.UIApp_Show_View, PageViewIDs.Main_Layer_Main_Page_View_2);
}

It's done by sending the Show Page action to the UIApp with the page view to show.

Angelscript - Initialization of List of Classes

Angelscript - Initialization of List of Classes

Re: Angelscript - Initialization of List of Classes

Re: Angelscript - Initialization of List of Classes

Re: Angelscript - Initialization of List of Classes

Re: Angelscript - Initialization of List of Classes

Re: Angelscript - Initialization of List of Classes

Re: Angelscript - Initialization of List of Classes

Re: Angelscript - Initialization of List of Classes

Re: Angelscript - Display Menu

Re: Angelscript - Initialization of List of Classes