Canvas Radar and Minimap

[marco6453]

So in this thread i want to show you, how you make a custom Hud and a radar and a minimap, only with Canvas.
It's a working update of this tutorial:
http://udn.epicgames.com/Three/Maste...G%20INTERFACES

I've uploaded the needed packages:
http://www.gamefront.com/files/21314684/Content.zip

1. Create a custom gametype:

class MyGame extends UTGame;

var MU_Minimap GameMinimap;

defaultproperties
{
        HUDType=class'YourPackage.CustomHUD'
        bUseClassicHUD = true
        
}

2. Create other classes:

class MU_Minimap extends Compass;

var() MaterialInstanceConstant Minimap;
var() MaterialInstanceConstant CompassOverlay;

var Vector2D MapRangeMin,MapRangeMax;

var() Bool bForwardAlwaysUp;

var Vector2D MapCenter;

var() Const EditConst DrawSphereComponent MapExtentsComponent;

function PostBeginPlay()
{
	Super.PostBeginPlay();

	MapCenter.X = Location.X;
	MapCenter.Y = Location.Y;
	MapRangeMin.X = MapCenter.X - MapExtentsComponent.SphereRadius;
	MapRangeMax.X = MapCenter.X + MapExtentsComponent.SphereRadius;
	MapRangeMin.Y = MapCenter.Y - MapExtentsComponent.SphereRadius;
	MapRangeMax.Y = MapCenter.Y + MapExtentsComponent.SphereRadius;
}

defaultproperties
{
	Begin Object Class=DrawSphereComponent Name=DrawSphere0
     	SphereColor=(B=0,G=255,R=0,A=255)
     	SphereRadius=5000.000000
	End Object
	MapExtentsComponent=DrawSphere0
	Components.Add(DrawSphere0)

	bForwardAlwaysUp=True
	Minimap = MaterialInstanceConstant'CompassContent.M_minimap_INST'
    CompassOverlay = MaterialInstanceConstant'CompassContent.M_compass_INST'
}

interface ICompass;

function float GetDegreeHeading();
function float GetRadianHeading();

function int GetYaw();
function Rotator GetRotator();
function vector GetVectorizedRotator();

class Compass extends actor placeable implements(ICompass);

event PostBeginPlay()
{                                                             
 	`log(GetRadianHeading()@GetDegreeHeading(),,'compass heading');
}

function float GetRadianHeading()
{
	local Vector v;
	local Rotator r;
	local float f;
 
	r.Yaw = rotation.Yaw;   // a
	v = vector(r);          // b

	f = GetHeadingAngle(v); // c
	f = UnwindHeading(f);   // d

	while (f < 0)		    // e
		f += PI * 2.0f;

	return f;
} 

function float GetDegreeHeading()
{
	local float f;

	f = GetRadianHeading();

	f *= RadToDeg;

	return f;
}

// Return the yaw of the actor
function int GetYaw()
{
	return Rotation.Yaw;
}
					  
function Rotator GetRotator()
{
	return Rotation;
}

function vector GetVectorizedRotator()
{
	return vector(Rotation);
}

DefaultProperties
{
	Begin Object Class=ArrowComponent Name=Arrow
		ArrowColor = (B=80,G=80,R=200,A=255)
		ArrowSize = 1.000000
		Name = "North Heading"
	End Object
	Components(0) = Arrow

	Begin Object Class=SpriteComponent Name=Sprite 
		Sprite=Texture2D'UTBookTextures.compass'
		HiddenGame = True
		AlwaysLoadOnClient = False
		AlwaysLoadOnServer = False
		Name  = "Sprite"
	End Object
	Components(1) = Sprite

	bStatic   = True
	bHidden   = True
	bNoDelete = True
	bMovable  = False
}

3. Now the Hud :
There will be a warning on the screen
You can disable it, be typing "DisableAllScreenMessages" into the console

class CustomHUD extends UTHUD;

var MaterialInstanceConstant GameMinimapMIC;
var Material GameMinimapp;

var MU_Minimap GameMinimap;
var Float TileSize;
var Int MapDim;
var Int BoxSize;
var color PlayerColors[2];

var float MPosXMap;
var float MPosYMap;

simulated function PostBeginPlay()
{
	Super.PostBeginPlay();

	GameMinimap = Mygame(WorldInfo.Game).GameMinimap;
}


function DrawLivingHUD()
{
    DrawMap();

    MPosXMap = Canvas.OrgX + 30;
    MPosYMap = Canvas.ClipY/1.6;
}


/////////////////////////////////
//Radar/Minimap
/////////////////////////////////

function float GetPlayerHeading()
{
	local Float PlayerHeading;
	local Rotator PlayerRotation;
	local Vector v;

	PlayerRotation.Yaw = PlayerOwner.Pawn.Rotation.Yaw;
	v = vector(PlayerRotation);
	PlayerHeading = GetHeadingAngle(v);
	PlayerHeading = UnwindHeading(PlayerHeading);

	while (PlayerHeading < 0)
		PlayerHeading += PI * 2.0f;

	return PlayerHeading;
}


//There will be a warning on the screen
//You can disable it, be typing "DisableAllScreenMessages"

function DrawMap()
{
	local Float TrueNorth,PlayerHeading;
	local Float MapRotation,CompassRotation;
	local Vector PlayerPos, ClampedPlayerPos, RotPlayerPos, DisplayPlayerPos, StartPos;
	local LinearColor MapOffset;
	local Float ActualMapRange;
	local Controller C;

	//Set MapDim & BoxSize accounting for the current resolution
	MapPosition.X = MPosXMap;  //default.MapPosition.X * FullWidth;
	MapPosition.Y = MPosYMap;  //default.MapPosition.Y * FullHeight;
	MapDim = default.MapDim * ResolutionScale;
	BoxSize = default.BoxSize * ResolutionScale;

	//Calculate map range values
	ActualMapRange = FMax(	GameMinimap.MapRangeMax.X - GameMinimap.MapRangeMin.X,
						GameMinimap.MapRangeMax.Y - GameMinimap.MapRangeMin.Y);

	//Calculate normalized player position
	PlayerPos.X = (PlayerOwner.Pawn.Location.Y - GameMinimap.MapCenter.Y) / ActualMapRange;
	PlayerPos.Y = (GameMinimap.MapCenter.X - PlayerOwner.Pawn.Location.X) / ActualMapRange;

	//Calculate clamped player position
	ClampedPlayerPos.X = FClamp(PlayerPos.X,-0.5 + (TileSize / 2.0),0.5 - (TileSize / 2.0));
	ClampedPlayerPos.Y = FClamp(PlayerPos.Y,-0.5 + (TileSize / 2.0),0.5 - (TileSize / 2.0));

	//Get north direction and player's heading
	TrueNorth = GameMinimap.GetRadianHeading();
	Playerheading = GetPlayerHeading();

	//Calculate rotation values
	if(GameMinimap.bForwardAlwaysUp)
	{
		MapRotation = PlayerHeading;
		CompassRotation = PlayerHeading - TrueNorth;
	}
	else
	{
		MapRotation = PlayerHeading - TrueNorth;
		CompassRotation = MapRotation;
	}

	//Calculate position for displaying the player in the map
	DisplayPlayerPos.X = VSize(PlayerPos) * Cos( ATan(PlayerPos.X) - MapRotation);
	DisplayPlayerPos.Y = VSize(PlayerPos) * Sin( ATan(PlayerPos.Y) - MapRotation);

	//Calculate player location after rotation
	RotPlayerPos.X = VSize(ClampedPlayerPos) * Cos( ATan(ClampedPlayerPos.X) - MapRotation);
	RotPlayerPos.Y = VSize(ClampedPlayerPos) * Sin( ATan(ClampedPlayerPos.Y) - MapRotation);

	//Calculate upper left UV coordinate
	StartPos.X = FClamp(RotPlayerPos.X + (0.5 - (TileSize / 2.0)),0.0,1.0 - TileSize);
	StartPos.Y = FClamp(RotPlayerPos.Y + (0.5 - (TileSize / 2.0)),0.0,1.0 - TileSize);
	StartPos.X = FClamp(DisplayPlayerPos.X + (0.5 - (TileSize / 2.0)),TileSize/-2,1.0 - TileSize/2);
	StartPos.Y = FClamp(DisplayPlayerPos.Y + (0.5 - (TileSize / 2.0)),TileSize/-2,1.0 - TileSize/2);

	//Calculate texture panning for alpha
	MapOffset.R =  FClamp(-1.0 * RotPlayerPos.X,-0.5 + (TileSize / 2.0),0.5 - (TileSize / 2.0));
	MapOffset.G =  FClamp(-1.0 * RotPlayerPos.Y,-0.5 + (TileSize / 2.0),0.5 - (TileSize / 2.0));
	MapOffset.R =  FClamp(-1.0 * DisplayPlayerPos.X,-0.5,0.5);
	MapOffset.G =  FClamp(-1.0 * DisplayPlayerPos.Y,-0.5,0.5);


        //Set the material parameter values
	GameMinimap.Minimap.SetScalarParameterValue('MapRotation',MapRotation);
	GameMinimap.Minimap.SetScalarParameterValue('TileSize',TileSize);
	GameMinimap.Minimap.SetVectorParameterValue('MapOffset',MapOffset);
	GameMinimap.CompassOverlay.SetScalarParameterValue('CompassRotation',CompassRotation);

	//Draw the map
	Canvas.SetPos(MapPosition.X,MapPosition.Y);
	Canvas.DrawMaterialTile(GameMinimap.Minimap,MapDim,MapDim,StartPos.X,StartPos.Y,TileSize,TileSize);

	//Draw the player's location
	Canvas.SetPos(	MapPosition.X + MapDim * (((DisplayPlayerPos.X + 0.5) - StartPos.X) / TileSize) - (BoxSize / 2),
				MapPosition.Y + MapDim * (((DisplayPlayerPos.Y + 0.5) - StartPos.Y) / TileSize) - (BoxSize / 2));
	Canvas.SetDrawColor(PlayerColors[0].R,
					PlayerColors[0].G,
					PlayerColors[0].B,
					PlayerColors[0].A);
	Canvas.DrawBox(BoxSize,BoxSize);
	//Canvas.DrawMaterialTile(PlayerTex, 1400 * ResolutionScale, 900 * ResolutionScale);

	/*****************************
	*  Draw Other Players
	*****************************/

	foreach WorldInfo.AllControllers(class'Controller',C)
	{
		if(PlayerController(C) != PlayerOwner)
		{
			//Calculate normalized player position
			PlayerPos.Y = (GameMinimap.MapCenter.X - C.Pawn.Location.X) / ActualMapRange;
			PlayerPos.X = (C.Pawn.Location.Y - GameMinimap.MapCenter.Y) / ActualMapRange;

			//Calculate position for displaying the player in the map
			DisplayPlayerPos.X = VSize(PlayerPos) * Cos( ATan(PlayerPos.X) - MapRotation);
			DisplayPlayerPos.Y = VSize(PlayerPos) * Sin( ATan(PlayerPos.Y) - MapRotation);

			if(VSize(DisplayPlayerPos - RotPlayerPos) <= ((TileSize / 2.0) - (TileSize * Sqrt(2 * Square(BoxSize / 2)) / MapDim)))
			{
				//Draw the player's location
				Canvas.SetPos(	MapPosition.X + MapDim * (((DisplayPlayerPos.X + 0.5) - StartPos.X) / TileSize) - (BoxSize / 2),
							MapPosition.Y + MapDim * (((DisplayPlayerPos.Y + 0.5) - StartPos.Y) / TileSize) - (BoxSize / 2));
				Canvas.SetDrawColor(PlayerColors[1].R,
								PlayerColors[1].G,
								PlayerColors[1].B,
								PlayerColors[1].A);
				Canvas.DrawBox(BoxSize,BoxSize);
			}
		}
	}

	//Draw the compass overlay
	Canvas.SetPos(MapPosition.X,MapPosition.Y);
	Canvas.DrawMaterialTile(GameMinimap.CompassOverlay,MapDim,MapDim,0.0,0.0,1.0,1.0);
}


exec function ChangeMapsize(int size)
{
   MapDim = size;

}

exec function MapSizeUp()
{
	MapDim *= 2;
	BoxSize *= 2;
}

exec function MapSizeDown()
{
	MapDim /= 2;
	BoxSize /= 2;
}

exec function MapZoomIn()
{
	TileSize = 1.0 / FClamp(int((1.0 / TileSize) + 1.0) + 0.5,1.5,10.5);
	TileSize = 1.0 / FClamp(int((1.0 / TileSize) + 1.0) + 0.5,1.5,10.5);

}

exec function MapZoomOut()
{
	TileSize = 1.0 / FClamp(Int((1.0 / TileSize) - 1.0) + 0.5,1.5,10.5);
}


defaultproperties
{
        MapDim=256
	BoxSize=12
	PlayerColors(0)=(R=255,G=255,B=255,A=255)
	PlayerColors(1)=(R=96,G=255,B=96,A=255)
	TileSize=1
	MapPosition=(X=0.000000,Y=0.000000)

}

Now we are done with coding.
In your level, you have to place a MU_Minimap actor (Select the Actor classes Tab and search for this actor)
You have to play with the radius (select the MU_Minimap actor and press F4) until it fits the size of your level.

If you've got any questions PN me or write a message in this thread!

[GeekyPayback]

3. Now the Hud :
There will be a warning on the screen
You can disable it, be typing "DisableAllScreenMessages" into the console

Isn't that warning there for a reason? I've been struggling with it myself and I don't have a solution but this seems like homer simpson putting a plaster over the engine management light to make the problem go away.

The warning is MIC::SetVectorParameterValue : Modifying 'your_material_name' during gameplay

[marco6453]

Here is the Solution:
http://forums.epicgames.com/threads/...hlight=minimap

[GeekyPayback]

Here is the Solution:
http://forums.epicgames.com/threads/...hlight=minimap

Ah, ok. Fixed my code. Thanks! I cant see where you've done that in the code you've posted (it may be in the zip but I didn't download that as I'd already been through the same conversion process as you).

[Andychung91]

Hi there, before i begin i'd just like to add im pretty noobish when it comes to Unreal scripting. BUT i want to learrn!

As much help you have been breaking that old massive tutorial UDN gave us, im still struggling to get this compass working, and i really need it working for my dissertation.

SO ive followed the tutorial marco6453 provided us with. Ive created the UC files(do i need to compile these to U files, if so how??) and ive put them in here Z:\Program Files (x86)\UDK\UDK-2011-07\Development\Src\MyMod\Classes is that right?

The MU_minimap actor and Compass actor comes up if i search it in actor classes in udk. and I've followed the big UDN tutorial. Im pretty sure ive done everything. including cooking the map file and running it.Also rebuilding scripts. But it still does not come up with the compass...

I know im a noob, but everyone starts somewhere...
Any speedy response would be appreciated.
Thanks Alot in advance!

[GeekyPayback]

From what you've written I think the bit you are missing is setting up the project so the build script picks up your code. Building the scripts is the bit that turns your code into a .U file named the same as the directory you stored it in.

Have a read through the project set up section, see if theres anything you missed (I'm guessing the ModEditPackages pointing at your source code bit).

http://udn.epicgames.com/Three/Devel...t.html#Project setup

If it's still not working after that post the output from your build. Once we know its built the U files the next step is checking your game class is definitely loading.

[Andychung91]

UDK is already looking at myMod folder in devlopment/src. However, its still not working...maybe i implemented it wrong? how can i check my classes are loaded correctly?
thanks again and sorry for the late reply.

[GeekyPayback]

Paste the contents of your UDKEngine.ini and the results of the compile. After we have both of those we should know what the problem is (nb. use the [code ] tags to make it readable on this forum)

[Andychung91]

I implemented the code given on the mastering unreal script tutorial...

Init: Version: 8710
Init: Epic Internal: 0
Init: Compiled (32-bit): Jul 18 2011 18:37:12
Init: Command line: 
Init: Base directory: Z:\Program Files (x86)\UDK\UDK-2011-07\Binaries\Win32\
Init: Character set: Unicode
Log: Executing Class UnrealEd.MakeCommandlet
--------------------Core - Release--------------------
--------------------Engine - Release--------------------
--------------------GFxUI - Release--------------------
--------------------GameFramework - Release--------------------
--------------------UnrealEd - Release--------------------
--------------------GFxUIEditor - Release--------------------
--------------------IpDrv - Release--------------------
--------------------OnlineSubsystemPC - Release--------------------
--------------------OnlineSubsystemSteamworks - Release--------------------
--------------------UDKBase - Release--------------------
--------------------UTEditor - Release--------------------
--------------------UTGame - Release--------------------
--------------------UTGameContent - Release--------------------
--------------------MyMod - Release--------------------
Analyzing...
Z:\Program Files (x86)\UDK\UDK-2011-07\Development\Src\MyMod\Classes\MinimapGame.uc(11) : Warning, Unresolved reference to Class 'MasteringUnrealScript.MU_Minimap'
Z:\Program Files (x86)\UDK\UDK-2011-07\Development\Src\MyMod\Classes\MinimapGame.uc(11) : Error, Call to 'AllActors', parameter 2: Type mismatch in Out variable
Z:\Program Files (x86)\UDK\UDK-2011-07\Development\Src\MyMod\Classes\MinimapHUD.uc(106) : Error, Call to 'ATan': Function only takes 1 parameter(s)
Compile aborted due to errors.

Warning/Error Summary
---------------------
Z:\Program Files (x86)\UDK\UDK-2011-07\Development\Src\MyMod\Classes\MinimapGame.uc(11) : Error, Call to 'AllActors', parameter 2: Type mismatch in Out variable
Z:\Program Files (x86)\UDK\UDK-2011-07\Development\Src\MyMod\Classes\MinimapHUD.uc(106) : Error, Call to 'ATan': Function only takes 1 parameter(s)
Z:\Program Files (x86)\UDK\UDK-2011-07\Development\Src\MyMod\Classes\MinimapGame.uc(11) : Warning, Unresolved reference to Class 'MasteringUnrealScript.MU_Minimap'

Failure - 2 error(s), 1 warning(s)
Execution of commandlet took:  4.64 seconds
[Mar 14, 8:22 PM] COMMANDLET 'UDK.exe make' FAILED

Thats the compile errors for the unrealscript tutorial source files.

Heres the compile errors for the code from this post.

Analyzing...
Z:\Program Files (x86)\UDK\UDK-2011-07\Binaries\..\Development\Src\MyMod\Classes\CompassActor.uc : Error, Script vs. class name mismatch (CompassActor/CustomHUD)
Z:\Program Files (x86)\UDK\UDK-2011-07\Binaries\..\Development\Src\MyMod\Classes\CompassActor.uc : Error, Script vs. class name mismatch (CompassActor/CustomHUD)
Z:\Program Files (x86)\UDK\UDK-2011-07\Binaries\..\Development\Src\MyMod\Classes\MinimapGame.uc : Error, Script vs. class name mismatch (MinimapGame/MyGame)
Z:\Program Files (x86)\UDK\UDK-2011-07\Binaries\..\Development\Src\MyMod\Classes\MinimapGame.uc : Error, Script vs. class name mismatch (MinimapGame/MyGame)
Error, Superclass Compass of class MU_Minimap not found
Compile aborted due to errors.

Warning/Error Summary
---------------------
Z:\Program Files (x86)\UDK\UDK-2011-07\Binaries\..\Development\Src\MyMod\Classes\CompassActor.uc : Error, Script vs. class name mismatch (CompassActor/CustomHUD)
Z:\Program Files (x86)\UDK\UDK-2011-07\Binaries\..\Development\Src\MyMod\Classes\MinimapGame.uc : Error, Script vs. class name mismatch (MinimapGame/MyGame)
Error, Superclass Compass of class MU_Minimap not found

Failure - 5 error(s), 0 warning(s)
Execution of commandlet took:  18.48 seconds
[Mar 14, 8:49 PM] COMMANDLET 'UDK.exe make -full' FAILED

[UnrealEd.EditorEngine]
LocalPlayerClassName=UnrealEd.EditorPlayer
bSubtitlesEnabled=True
GridEnabled=True
SnapScaleEnabled=True
ScaleGridSize=5
SnapVertices=False
SnapDistance=10.000000
GridSize=(X=16.000000,Y=16.000000,Z=16.000000)
RotGridEnabled=True
RotGridSize=(Pitch=1024,Yaw=1024,Roll=1024)
GameCommandLine=-log
FOVAngle=90.000000
GodMode=True
AutoSaveDir=..\..\UDKGame\Autosaves
InvertwidgetZAxis=True
UseAxisIndicator=True
MatineeCurveDetail=0.1
Client=WinDrv.WindowsClient
CurrentGridSz=4
bUseMayaCameraControls=True
bPrefabsLocked=True
HeightMapExportClassName=TerrainHeightMapExporterTextT3D
EditorOnlyContentPackages=EditorMeshes
EditorOnlyContentPackages=EditorMaterials
EditorOnlyContentPackages=EditorResources
EditPackagesInPath=..\..\Development\Src
EditPackages=Core
EditPackages=Engine
EditPackages=GFxUI
EditPackages=GameFramework
EditPackages=UnrealEd
EditPackages=GFxUIEditor
EditPackages=IpDrv
EditPackages=OnlineSubsystemPC
EditPackages=OnlineSubsystemGameSpy
EditPackages=OnlineSubsystemLive
EditPackages=OnlineSubsystemSteamworks
bBuildReachSpecs=FALSE
bGroupingActive=TRUE
bCustomCameraAlignEmitter=TRUE
CustomCameraAlignEmitterDistance=100.0
bDrawSocketsInGMode=FALSE
bSmoothFrameRate=FALSE
MinSmoothedFrameRate=5
MaxSmoothedFrameRate=120
FarClippingPlane=0
TemplateMapFolders=..\..\Engine\Content\Maps\Templates
EditPackagesOutPath=..\..\UDKGame\Script
FRScriptOutputPath=..\..\UDKGame\ScriptFinalRelease
EditPackages=UDKBase
EditPackages=UTEditor
InEditorGameURLOptions=?quickstart=1?numplay=1
EditPackages=UTGame
EditPackages=UTGameContent
ModEditPackages=MyMod

and thats the UDKengine.ini file
:/ Im pretty sure the engine file is fine. i htink im just being a noob trying to implement the compass classes.
Also im pretty sure it shouldnt be looking in Binaries... :
Z:\Program Files (x86)\UDK\UDK-2011-07\Binaries\..\Development\Src\MyMod\Classes
my mod classes is in here
Z:\Program Files (x86)\UDK\UDK-2011-07\Development\Src\MyMod

thanks again

[GeekyPayback]

So the answer to your original problem is that your code doesn't compile. This means your .u file is not created, and that's why the game isn't finding the class you created.

Forget about the original code and concentrate on what you've got from this thread.

Z:\Program Files (x86)\UDK\UDK-2011-07\Binaries\..\Development\Src\MyMod\Classes\Compa ssActor.uc : Error, Script vs. class name mismatch (CompassActor/CustomHUD)
Z:\Program Files (x86)\UDK\UDK-2011-07\Binaries\..\Development\Src\MyMod\Classes\Minim apGame.uc : Error, Script vs. class name mismatch (MinimapGame/MyGame)

Unrealscript requires that the classname matches the the filename. I dont understand why its throwing extra values on the end - "CompassActor/CustomHUD"

Could you paste the contents of Development\Src\MyMod\Classes\CompassActor.uc as I think that will contain the source of your problem.

[Eikester]

Hello, maybe someone can help me, i'm having some weird problems with the minimap.
First screenshot:

As you can see i am walking straight from the bottom to the top. Now compare the Position with the Position on the Minimap,
if i pass the MapCenter the position is negated on the Minimap and the Position is the same as i started (dont know how to explain this better :/)
also for some reason the position on the Minimap only works for Y Axis,
walking left to right ends on an up-down movement on the minimap, the x value is always around ~0.

Hope someone understands what i am saying (probably not xD), have problems with explaining things in english.

Also here is my DrawMap function: (its nearly the same as in the OP)

function DrawMap()
{
	local Float TrueNorth,PlayerHeading;
	local Float MapRotation,CompassRotation;
	local Vector PlayerPos, ClampedPlayerPos, RotPlayerPos, DisplayPlayerPos, StartPos;
	local LinearColor MapOffset;
	local Float ActualMapRange;
	local Controller C;

	local UnLoaded_PlayerController PC;
	PC = UnLoaded_PlayerController(PlayerOwner);

	//Set MapDim & BoxSize accounting for the current resolution
	MapPosition.X = default.MapPosition.X;
	MapPosition.Y = default.MapPosition.Y;
	MapDim = default.MapDim * ResScaleX;
	BoxSize = default.BoxSize * ResScaleX;

	//Calculate map range values
	ActualMapRange = FMax(	GameMinimap.MapRangeMax.X - GameMinimap.MapRangeMin.X,
						GameMinimap.MapRangeMax.Y - GameMinimap.MapRangeMin.Y);

	//Calculate normalized player position
	PlayerPos.X = (PC.Pawn.Location.Y - GameMinimap.MapCenter.Y) / ActualMapRange;
	PlayerPos.Y = (GameMinimap.MapCenter.X - PC.Pawn.Location.X) / ActualMapRange;

	//Calculate clamped player position
	ClampedPlayerPos.X = FClamp(PlayerPos.X,-0.5 + (TileSize / 2.0),0.5 - (TileSize / 2.0));
	ClampedPlayerPos.Y = FClamp(PlayerPos.Y,-0.5 + (TileSize / 2.0),0.5 - (TileSize / 2.0));

	//Get north direction and player's heading
	TrueNorth = GameMinimap.GetRadianHeading();
	Playerheading = GetPlayerHeading();

	//Calculate rotation values
	if(GameMinimap.bForwardAlwaysUp)
	{
		MapRotation = PlayerHeading;
		CompassRotation = PlayerHeading - TrueNorth;
	}
	else
	{
		MapRotation = PlayerHeading - TrueNorth;
		CompassRotation = MapRotation;
	}

	//Calculate position for displaying the player in the map
	DisplayPlayerPos.X = VSize(PlayerPos) * Cos( ATan(PlayerPos.X) - MapRotation);
	DisplayPlayerPos.Y = VSize(PlayerPos) * Sin( ATan(PlayerPos.Y) - MapRotation);

	//Calculate player location after rotation
	RotPlayerPos.X = VSize(ClampedPlayerPos) * Cos( ATan(ClampedPlayerPos.X) - MapRotation);
	RotPlayerPos.Y = VSize(ClampedPlayerPos) * Sin( ATan(ClampedPlayerPos.Y) - MapRotation);

	//Calculate upper left UV coordinate
	StartPos.X = FClamp(RotPlayerPos.X + (0.5 - (TileSize / 2.0)),0.0,1.0 - TileSize);
	StartPos.Y = FClamp(RotPlayerPos.Y + (0.5 - (TileSize / 2.0)),0.0,1.0 - TileSize);
	StartPos.X = FClamp(DisplayPlayerPos.X + (0.5 - (TileSize / 2.0)),TileSize/-2,1.0 - TileSize/2);
	StartPos.Y = FClamp(DisplayPlayerPos.Y + (0.5 - (TileSize / 2.0)),TileSize/-2,1.0 - TileSize/2);

	//Calculate texture panning for alpha
	MapOffset.R =  FClamp(-1.0 * RotPlayerPos.X,-0.5 + (TileSize / 2.0),0.5 - (TileSize / 2.0));
	MapOffset.G =  FClamp(-1.0 * RotPlayerPos.Y,-0.5 + (TileSize / 2.0),0.5 - (TileSize / 2.0));
	MapOffset.R =  FClamp(-1.0 * DisplayPlayerPos.X,-0.5,0.5);
	MapOffset.G =  FClamp(-1.0 * DisplayPlayerPos.Y,-0.5,0.5);


        //Set the material parameter values
	MiniMapInst.SetScalarParameterValue('MapRotation',MapRotation);
	MiniMapInst.SetScalarParameterValue('TileSize',TileSize);
	MiniMapInst.SetVectorParameterValue('MapOffset',MapOffset);
	CompassInst.SetScalarParameterValue('CompassRotation',CompassRotation);

	//Draw the map
	Canvas.SetPos(MapPosition.X,MapPosition.Y);
	Canvas.DrawMaterialTile(MiniMapInst,MapDim,MapDim,StartPos.X,StartPos.Y,TileSize,TileSize);

	//Draw the player's location
	Canvas.SetPos(	MapPosition.X + MapDim * (((DisplayPlayerPos.X + 0.5) - StartPos.X) / TileSize) - (BoxSize / 2),
				MapPosition.Y + MapDim * (((DisplayPlayerPos.Y + 0.5) - StartPos.Y) / TileSize) - (BoxSize / 2));
	Canvas.SetDrawColor(PlayerColors[0].R,
					PlayerColors[0].G,
					PlayerColors[0].B,
					PlayerColors[0].A);
	Canvas.DrawBox(BoxSize,BoxSize);

	/*****************************
	*  Draw Other Players
	*****************************/

	foreach WorldInfo.AllControllers(class'Controller',C)
	{
		if(PlayerController(C) != PC)
		{
		}
	}

	//Draw the compass overlay
	Canvas.SetPos(MapPosition.X,MapPosition.Y);
	Canvas.DrawMaterialTile(CompassInst,MapDim,MapDim,0.0,0.0,1.0,1.0);
}

I dont see whats wrong, i tried the UDN example and this one, both with the same weird behavior, btw i am using the February UDK.
Also why does the ATan function now only excepts 1 parameter and how to convert the earlier ATan with 2 parameters to the new one?

[Andychung91]

Ok, so i did a fresh install of udk, coppied my map files over and implemented the code from this thread and placed an mu_minimap actor in and played around with the textures that it needs to display. The scripts compiles but with warnings...

Z:\Program Files (x86)\FreshUDK\Development\Src\MyMod\Classes\MU_Minimap.uc(36) : Warning, ObjectProperty MyMod.MU_Minimap:Minimap: unresolved reference to 'MaterialInstanceConstant'CompassContent.M_minimap_INST''
Z:\Program Files (x86)\FreshUDK\Development\Src\MyMod\Classes\MU_Minimap.uc(36) : Warning, Invalid property value in defaults:     Minimap = MaterialInstanceConstant'CompassContent.M_minimap_INST'
Z:\Program Files (x86)\FreshUDK\Development\Src\MyMod\Classes\MU_Minimap.uc(37) : Warning, ObjectProperty MyMod.MU_Minimap:CompassOverlay: unresolved reference to 'MaterialInstanceConstant'CompassContent.M_compass_INST''
Z:\Program Files (x86)\FreshUDK\Development\Src\MyMod\Classes\MU_Minimap.uc(37) : Warning, Invalid property value in defaults:     CompassOverlay = MaterialInstanceConstant'CompassContent.M_compass_INST'
Z:\Program Files (x86)\FreshUDK\Development\Src\MyMod\Classes\MyGame.uc(7) : Warning, ClassProperty Engine.GameInfo:HUDType: unresolved reference to 'class'YourPackage.CustomHUD''
Z:\Program Files (x86)\FreshUDK\Development\Src\MyMod\Classes\MyGame.uc(7) : Warning, Invalid property value in defaults:         HUDType=class'YourPackage.CustomHUD'

MU_minimap.uc

36:Minimap = MaterialInstanceConstant'CompassContent.M_minimap_INST' 
37:CompassOverlay = MaterialInstanceConstant'CompassContent.M_compass_INST'

MyGame.uc

7:HUDType=class'YourPackage.CustomHUD'

Also, when i cook the map it cooks fine, and launches fine... but it doesnt give me the option to run it in "MyGame" mode only DM TDM and CTF. Ive changed it in the world properties but theres no change

Thanks again :P

[Eikester]

-snip-

Fixed!

Replaced this:

//Calculate position for displaying the player in the map
	DisplayPlayerPos.X = VSize(PlayerPos) * Cos( ATan(PlayerPos.X) - MapRotation);
	DisplayPlayerPos.Y = VSize(PlayerPos) * Sin( ATan(PlayerPos.Y) - MapRotation);

	//Calculate player location after rotation
	RotPlayerPos.X = VSize(ClampedPlayerPos) * Cos( ATan(ClampedPlayerPos.X) - MapRotation);
	RotPlayerPos.Y = VSize(ClampedPlayerPos) * Sin( ATan(ClampedPlayerPos.Y) - MapRotation);

with this:

//Calculate position for displaying the player in the map
	DisplayPlayerPos.X = VSize(PlayerPos) * Cos( ATan2(PlayerPos.Y, PlayerPos.X) - MapRotation);
	DisplayPlayerPos.Y = VSize(PlayerPos) * Sin( ATan2(PlayerPos.Y, PlayerPos.X) - MapRotation);

	//Calculate player location after rotation
	RotPlayerPos.X = VSize(ClampedPlayerPos) * Cos( ATan2(ClampedPlayerPos.Y, ClampedPlayerPos.X) - MapRotation);
	RotPlayerPos.Y = VSize(ClampedPlayerPos) * Sin( ATan2(ClampedPlayerPos.Y, ClampedPlayerPos.X) - MapRotation);

[Andychung91]

ok well, Ive seemed to of solved them errors by replacing the package name with my compass package name and "yourpackage" with myMod where my scripts are stored.
So now all scripts are building fine, the map is cooking fine... but i still cant get this damn compass to apear what am i doing wrong?!

[Andychung91]

Hey Im still stuck on this minimap...Please Help!
I have used the code from this post. but i have a feeling im implementing it wrong.
This is what i have done so far.





Also I have chosen MyGame as the game type, which is what the gametype is called in the code... What really confuses me is why it loads up in DM mode with full HUD...

"none" Gametype...All my kismet still works.. and there is no compass or hud...


Were as when i put it on 'MyGame' game type it comes up like a DM HUD with no compass(apart from the default radar). Surely it must be reading in the gametype if i can select it in the editor...Also my kismet does not all my kismet works in this class :/


What am i doing wrong? please help
btw i am greatful for those who have helped me so far! you guys are great.

[Jimster092]

Hi, I followed this tutorial and I did everything I could have done to make this work but the only issue im coming up with is that the minimap is not showing up in my HUD. Ive added the minimap actor into my scene and played around with the dimensions but no avail. (I do have the package imported into UDK.)

[FattyJ0k3r]

Fixed!

That guy is right, if you getting wrong positioning on your minimap. Although, you must not forget to do the similar thing with atan functions for drawing other players.

If you can't see your map, try to draw with the canvas something in the end of your drawmap-function, for example, some text with the strict coordinates.
It doesn't appear too => your function wasn't been called, seek for correct calling.
Drawn canvas appears, other HUD doesn't => look into the positioning of drawing functions, could be some mistakes there and so on, HUD can't be drawn (still, just a theory).

And place your minimap-actor extremely carefully. Especially if you have multiple streaming levels. In my case, it actually worked only when being placed within persistent one.

[GeekyPayback]

Edit: Sorry, read the problem wrong. I'd stick a log at the top of your postrender function in the custom hud to check its getting called. That's the start point for drawing the map. If your log gets spammed with the message we know its a variable somewhere thats stopping the code reaching your map function

[daimaku]

hello, i'm trying to use this tutorial to add the radar to my game extending from UDKGame, all seems to be working right, but i have a little issue, when i draw the minimap on the screen the map texture will not draw complete, here is a picture of it



any idea on why my floor texture is not drawing in the right way ?

thanks in advance for all the help.

[Vantto]

ok well, Ive seemed to of solved them errors by replacing the package name with my compass package name and "yourpackage" with myMod where my scripts are stored.
So now all scripts are building fine, the map is cooking fine... but i still cant get this damn compass to apear what am i doing wrong?!

Hi, I followed this tutorial and I did everything I could have done to make this work but the only issue im coming up with is that the minimap is not showing up in my HUD. Ive added the minimap actor into my scene and played around with the dimensions but no avail. (I do have the package imported into UDK.)

For those that have followed this tutorial and are not seeing the minimap on your HUD, this is what I did.

After attempting numerous solutions, I finally added the following function to MyGame class:

class MyGame extends UTGame;

var MU_Minimap GameMinimap;

function InitGame( string Options, out string ErrorMessage )
{
	local MU_Minimap ThisMinimap;

	Super.InitGame(Options,ErrorMessage);
	
	foreach AllActors(class'MyMod.MU_Minimap',ThisMinimap)
	{
		GameMinimap = ThisMinimap;
		break;
	}
}
defaultproperties
{
        HUDType=class'YourPackage.CustomHUD'
        bUseClassicHUD = true
        
}

Your minimap should now be displaying. However, in my case, the minimap seems to be either offset incorrectly or tiled wrong. (Same as daimaku).

[Vantto]

any idea on why my floor texture is not drawing in the right way ?

Open your content browser while the engine is loaded and find your M_minimap Material and double click it.



On the bottom right you should find an interger at the beggining of the equition set to 0.5, change this to 1.0

Cheers!

[daimaku]

thanks for the info