This page documents a user-defined function that you can copy and paste into your addon. Replace <PREFIX> with your AddOn's prefix to avoid conflicts between different versions of these functions.
← User defined functions < GetPlayerBearing
Returns the player's current facing bearing based on the rotation of the minimap arrow.
bearing = GetPlayerBearing();
Return values[]
- bearing
- number - The player's current bearing (in Radians).
Example Implementation[]
local GetPlayerBearing;-- Local definition, remove to make global
do
local math=math;-- Local pointer to the Math library
local mmring=MinimapCompassTexture;-- Pointer to the Compass Ring
local mmarrow;-- Upvalue to hold the pointer to the Player Arrow
-- Scan for Player Arrow Texture
local list={Minimap:GetRegions()};
for i,j in pairs(list) do
-- Scan for a no-name texture with a specific file loaded.
if j:IsObjectType("Texture") and not j:GetName() and j:GetTexture():lower()=="interface\\minimap\\minimaparrow" then
mmarrow=j;-- Found it, save and stop scanning
break;
end
end
-- Function definition
GetPlayerBearing=function()
local obj=GetCVar("rotateMinimap")=="1" and mmring or mmarrow;-- Use the correct texture
if not obj then return 0; end-- Hopefully this doesn't happen
local fx,fy,bx,by=obj:GetTexCoord();-- Only need front and back of one side (left is returned first)
local a,dx,dy=0,fx-bx,by-fy;-- Y-Axis flipped for textures so Y values are swapped
if obj==mmring then dx=-dx; end-- Compass Ring spins the opposite direction
if dy==0 then-- Can't divide by zero
a=dx<0 and math.pi or 0;-- Could either be one or the other in this condition
else
a=math.atan(dx/dy)+(dy<0 and math.pi or 0);-- atan() only returns half of the values we need, add PI when needed
end
return a;
end
end
Notes[]
The old code posted here broke due to a change in the Minimap object. The player arrow shown is no longer a Model frame, it's a Texture now. Also note atan() is not the same function as math.atan, the first returns in Degrees while the later returns in Radians.
Due to the returns on math.atan(), the range this function returns with is between -0.5*PI and 1.5*PI