I have downloaded the classic Unity wiki radar script, and have seemed to set it up correctly on a game object. The problem is though, nothing happens on the radar. The center blip does not move, and enemies do not appear even though I have tagged them as "Enemy" I am developing for iOS, by the way. If you also know of any good free mobile radar scripts that do work that would be great if you could share them.
public class Radar : MonoBehaviour
{
public enum RadarTypes : int {Textured, Round, Transparent};
public enum RadarLocations : int {TopLeft, TopCenter, TopRight, BottomLeft, BottomCenter, BottomRight, Left, Center, Right, Custom};
// Display Location
public RadarLocations radarLocation = RadarLocations.BottomCenter;
public Vector2 radarLocationCustom;
public RadarTypes radarType = RadarTypes.Round;
public Color radarBackgroundA = new Color(255, 255, 0);
public Color radarBackgroundB = new Color(0, 255, 255);
public Texture2D radarTexture;
public float radarSize = 0.20f; // The amount of the screen the radar will use
public float radarZoom = 0.60f;
// Center Object information
public bool radarCenterActive;
public Color radarCenterColor = new Color(255, 255, 255);
public string radarCenterTag;
// Blip information
public bool radarBlip1Active;
public Color radarBlip1Color = new Color(0, 0, 255);
public string radarBlip1Tag;
public bool radarBlip2Active;
public Color radarBlip2Color = new Color(0, 255, 0);
public string radarBlip2Tag;
public bool radarBlip3Active;
public Color radarBlip3Color = new Color(255, 0, 0);
public string radarBlip3Tag;
public bool radarBlip4Active;
public Color radarBlip4Color = new Color(255, 0, 255);
public string radarBlip4Tag;
// Internal vars
private GameObject _centerObject;
private int _radarWidth;
private int _radarHeight;
private Vector2 _radarCenter;
private Texture2D _radarCenterTexture;
private Texture2D _radarBlip1Texture;
private Texture2D _radarBlip2Texture;
private Texture2D _radarBlip3Texture;
private Texture2D _radarBlip4Texture;
// Initialize the radar
void Start ()
{
// Determine the size of the radar
_radarWidth = (int)(Screen.width * radarSize);
_radarHeight = _radarWidth;
// Get the location of the radar
setRadarLocation();
// Create the blip textures
_radarCenterTexture = new Texture2D(3, 3, TextureFormat.RGB24, false);
_radarBlip1Texture = new Texture2D(3, 3, TextureFormat.RGB24, false);
_radarBlip2Texture = new Texture2D(3, 3, TextureFormat.RGB24, false);
_radarBlip3Texture = new Texture2D(3, 3, TextureFormat.RGB24, false);
_radarBlip4Texture = new Texture2D(3, 3, TextureFormat.RGB24, false);
CreateBlipTexture(_radarCenterTexture, radarCenterColor);
CreateBlipTexture(_radarBlip1Texture, radarBlip1Color);
CreateBlipTexture(_radarBlip2Texture, radarBlip2Color);
CreateBlipTexture(_radarBlip3Texture, radarBlip3Color);
CreateBlipTexture(_radarBlip4Texture, radarBlip4Color);
// Setup the radar background texture
if (radarType != RadarTypes.Textured)
{
radarTexture = new Texture2D(_radarWidth, _radarHeight, TextureFormat.RGB24, false);
CreateRoundTexture(radarTexture, radarBackgroundA, radarBackgroundB);
}
// Get our center object
GameObject[] gos;
gos = GameObject.FindGameObjectsWithTag(radarCenterTag);
_centerObject = gos[0];
}
// Update is called once per frame
void OnGUI ()
{
GameObject[] gos;
// Draw th radar background
if (radarType != RadarTypes.Transparent)
{
Rect radarRect = new Rect(_radarCenter.x - _radarWidth / 2, _radarCenter.y - _radarHeight / 2, _radarWidth, _radarHeight);
GUI.DrawTexture(radarRect, radarTexture);
}
// Draw blips
if (radarBlip1Active)
{
// Find all game objects
gos = GameObject.FindGameObjectsWithTag(radarBlip1Tag);
// Iterate through them and call drawBlip function
foreach (GameObject go in gos)
{
drawBlip(go, _radarBlip1Texture);
}
}
if (radarBlip2Active)
{
gos = GameObject.FindGameObjectsWithTag(radarBlip2Tag);
foreach (GameObject go in gos)
{
drawBlip(go, _radarBlip2Texture);
}
}
if (radarBlip3Active)
{
gos = GameObject.FindGameObjectsWithTag(radarBlip3Tag);
foreach (GameObject go in gos)
{
drawBlip(go, _radarBlip3Texture);
}
}
if (radarBlip4Active)
{
gos = GameObject.FindGameObjectsWithTag(radarBlip4Tag);
foreach (GameObject go in gos)
{
drawBlip(go, _radarBlip4Texture);
}
}
// Draw center oject
if (radarCenterActive)
{
Rect centerRect = new Rect(_radarCenter.x - 1.5f, _radarCenter.y - 1.5f, 3, 3);
GUI.DrawTexture(centerRect, _radarCenterTexture);
}
}
// Draw a blip for an object
void drawBlip(GameObject go, Texture2D blipTexture)
{
if (_centerObject)
{
Vector3 centerPos = _centerObject.transform.position;
Vector3 extPos = go.transform.position;
// Get the distance to the object from the centerObject
float dist = Vector3.Distance(centerPos, extPos);
// Get the object's offset from the centerObject
float bX = centerPos.x - extPos.x;
float bY = centerPos.z - extPos.z;
// Scale the objects position to fit within the radar
bX = bX * radarZoom;
bY = bY * radarZoom;
// For a round radar, make sure we are within the circle
if(dist <= (_radarWidth - 2) * 0.5 / radarZoom)
{
Rect clipRect = new Rect(_radarCenter.x - bX - 1.5f, _radarCenter.y + bY - 1.5f, 3, 3);
GUI.DrawTexture(clipRect, blipTexture);
}
}
}
// Create the blip textures
void CreateBlipTexture(Texture2D tex, Color c)
{
Color[] cols = {c, c, c, c, c, c, c, c, c};
tex.SetPixels(cols, 0);
tex.Apply();
}
// Create a round bullseye texture
void CreateRoundTexture(Texture2D tex, Color a, Color b)
{
Color c = new Color(0, 0, 0);
int size = (int)((_radarWidth / 2) / 4);
// Clear the texture
for (int x = 0; x < _radarWidth; x++)
{
for (int y = 0; y < _radarWidth; y++)
{
tex.SetPixel(x, y, c);
}
}
for (int r = 4; r > 0; r--)
{
if (r % 2 == 0)
{
c = a;
}
else
{
c = b;
}
DrawFilledCircle(tex, (int)(_radarWidth / 2), (int)(_radarHeight / 2), (r * size), c);
}
tex.Apply();
}
// Draw a filled colored circle onto a texture
void DrawFilledCircle(Texture2D tex, int cx, int cy, int r, Color c)
{
for (int x = -r; x < r ; x++)
{
int height = (int)Mathf.Sqrt(r * r - x * x);
for (int y = -height; y < height; y++)
tex.SetPixel(x + cx, y + cy, c);
}
}
// Figure out where to put the radar
void setRadarLocation()
{
// Sets radarCenter based on enum selection
if(radarLocation == RadarLocations.TopLeft)
{
_radarCenter = new Vector2(_radarWidth / 2, _radarHeight / 2);
}
else if(radarLocation == RadarLocations.TopCenter)
{
_radarCenter = new Vector2(Screen.width / 2, _radarHeight / 2);
}
else if(radarLocation == RadarLocations.TopRight)
{
_radarCenter = new Vector2(Screen.width - _radarWidth / 2, _radarHeight / 2);
}
else if(radarLocation == RadarLocations.Left)
{
_radarCenter = new Vector2(_radarWidth / 2, Screen.height / 2);
}
else if(radarLocation == RadarLocations.Center)
{
_radarCenter = new Vector2(Screen.width / 2, Screen.height / 2);
}
else if(radarLocation == RadarLocations.Right)
{
_radarCenter = new Vector2(Screen.width - _radarWidth / 2, Screen.height / 2);
}
else if(radarLocation == RadarLocations.BottomLeft)
{
_radarCenter = new Vector2(_radarWidth / 2, Screen.height - _radarHeight / 2);
}
else if(radarLocation == RadarLocations.BottomCenter)
{
_radarCenter = new Vector2(Screen.width / 2, Screen.height - _radarHeight / 2);
}
else if(radarLocation == RadarLocations.BottomRight)
{
_radarCenter = new Vector2(Screen.width - _radarWidth / 2, Screen.height - _radarHeight / 2);
}
else if(radarLocation == RadarLocations.Custom)
{
_radarCenter = radarLocationCustom;
}
}
}
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