# DeltaYaw# ( src_entity,dest_entity )

# Parameters

src_entity - source entity handle dest_entity - destination entity handle

# Description

Returns the yaw angle, that src_entity should be rotated by in order to face dest_entity. This command can be used to be point one entity at another, rotating on the y axis only. See also: DeltaPitch.

# Example

SetBuffer BackBuffer() camera=CreateCamera() ; Make camera orthagraphic for flat, 2D view CameraProjMode camera,2 ; Position and rotate camera so we have overhead (top-down) view PositionEntity camera,0,5,0 RotateEntity camera,90,0,0 ; Create red cone (the arrow) arrow=CreateCone() RotateMesh arrow,90,180,0 ScaleMesh arrow,.1,.1,.2 EntityColor arrow,255,0,0 ; Create blue sphere (the spot) spot=CreateSphere() ScaleMesh spot,.1,.1,.1 EntityColor spot,0,0,255 While Not KeyDown(1) ; If w,a,s,d pressed then move spot If KeyDown(17)=True Then MoveEntity spot,0,0,0.01 ; w - up If KeyDown(30)=True Then MoveEntity spot,-0.01,0,0 ; a - left If KeyDown(31)=True Then MoveEntity spot,0,0,-0.01 ; s - down If KeyDown(32)=True Then MoveEntity spot,0.01,0,0 ; d - right ; Rotate arrow using delta yaw value. Arrow will point at spot. RotateEntity arrow,0,DeltaYaw#(spot,arrow),0 RenderWorld Text 0,0,"Note: Camera view is overhead. The arrow will y-rotate using DeltaYaw value." Text 0,20,"Use w,a,s,d to move spot." Text 0,40,"Delta yaw: "+DeltaYaw#(spot,arrow) Flip Wend End

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