Here's some code i had lying about.
Left click to put down a way point. Press space to start the waypoint following. Space to Stop and start again.
; **** 2D waypoint editor, modified. Original Code by Ross C *****
; **** Modified code by Ross C *****
; **** create smooth transitions between way points *****
Graphics 800,600
SetBuffer BackBuffer()
Global max_path_points=100
Dim pathx#(max_path_points-1); set up 101 path points
Dim pathy#(max_path_points-1); -1 because arrays start at zero
Global path_counter=-1
Global current_path=0
Global cx#=0
Global cy#=0
Global ex#=400
Global ey#=100
Global movement_started=0
While Not KeyHit(1)
Cls
If MouseHit(1) Then
setpath(MouseX(),MouseY()); set path point with the mouses current coords
End If
If KeyHit(57) And movement_started=0 And path_counter>0 Then; if spacebar pressed then move rectangle
current_path=0; reset the current path to 0
cx=pathx(0); set the rectangles coords to the first path point
cy=pathy(0)
movement_started=1; set flag for movement started
ex=400
ey=100
End If
If KeyHit(28) Then; if the enter key is pressed then stop movement
movement_started=0; clear flag for movement
cx=pathx(0); set rectangle coords to the first path point
cy=pathy(0)
current_path=-1; set current path to none exsistant
End If
draw_path_points(); function for drawing the pathpoints
If movement_started=1 Then move(); draw the moving rectangle and move it
Color 200,200,200; set drawing color
Rect MouseX()-1,MouseY()-1,2,2; draw mouse location with a rectangle
Text 0,0,"Click mouse to set path point. Press spacebar to start animation. Press enter to stop."
Text 0,10,"movement started="+movement_started
Flip
Wend
End
Function move()
ang#=0
If current_path<path_counter Then; make sure the current path point is less than the highest
ang=ATan2(pathy(current_path+1)-pathy(current_path),pathx(current_path+1)-pathx(current_path))
;/\ basically means find the angle between the current path point and the next one /\
cx=cx+Cos(ang)*3; increase the x coord of the rect following the path points based on the angle
cy=cy+Sin(ang)*3; increase the y coord of the rect following the path points based on the angle
Color 100,200,100; change drawing color
Rect cx-3,cy-3,6,6; draw the rectangle central to it's coords
If Abs(cx-pathx(current_path+1))<2 And Abs(cy-pathy(current_path+1))<2 Then
; /\ if the rects coords are with a 1 pixel distance of the path point then /\
current_path=current_path+1; increase the current path point number
cx=pathx(current_path); set the rectangles coords to that of the next path point
cy=pathy(current_path)
End If
End If
angle=ATan2( cy - ey, cx - ex ); find the angl between the enemies and the waypoint follower
dist=Sqr( (ex-cx)*(ex-cx)+(ey-cy)*(ey-cy) ); find the distance between them
DebugLog dist
ex=ex+(Cos(angle)/1)*(dist/30); move the enemy at speed relative to the distance
ey=ey+(Sin(angle)/1)*(dist/30); move the enemy at speed relative to the distance
Rect ex-15,ey-15,30,30; draw the enemy
End Function
Function setpath(x,y)
path_counter=path_counter+1; increase counter
If path_counter>max_path_points-1 Then; if counter is higher than the available number of path points then set it back
path_counter=max_path_points-1
Else; else
pathx(path_counter)=x; record the x and y positions
pathy(path_counter)=y
End If
End Function
Function draw_path_points()
For loop=0 To path_counter; loop through all the path points
Color 100,100,200
Rect pathx(loop),pathy(loop),2,2
If loop<path_counter Then; do this loop while the loop value is less than the highest path value
Rect pathx(loop+1)-1,pathy(loop+1)-1,2,2; draw a rectangle at the path point so its central
Color 50,50,150; change drawing color
Line pathx(loop),pathy(loop),pathx(loop+1),pathy(loop+1); draw a line between the current point and the next one
End If
Next
End Function
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