using localized position to define vision cones/inside angle calc

Game Engine Game Engine Resources
1 

import bge
from mathutils import Vector


def main():


    cont = bge.logic.getCurrentController()
    own = cont.owner

    #if target not set get target from scene objects
    if type(own['Target']) is str:
        own['Target']=bge.logic.getCurrentScene().objects[own['Target']]


    # if you have a target object localize it
    else:
        
        # Localize the target point
        local = own['Target'].worldPosition-own.worldPosition
        local = own.worldOrientation.inverted()*local
        
        own['Read']=str(local)
        
        
        
        if local.z>0:
            #it's in front
            # because local +Z is front :D
            #Next is a cone :D
            
            
            if (abs(local.y)-local.z)<.1:
                #inside cone

                bge.render.drawLine(own.worldPosition+(own.worldOr  ientation*Vector([0,1,1])),own.worldPosition+(own.worldOrientation*Vector([0,10,10])),(0,1,0))
                bge.render.drawLine(own.worldPosition+(own.worldOr  ientation*Vector([0,-1,1])),own.worldPosition+(own.worldOrientation*Vector([0,-10,10])),(0,1,0))



            else:
                #outside cone
                bge.render.drawLine(own.worldPosition+(own.worldOr  ientation*Vector([0,1,1])),own.worldPosition+(own.worldOrientation*Vector([0,10,10])),(1,0,0))
                bge.render.drawLine(own.worldPosition+(own.worldOr  ientation*Vector([0,-1,1])),own.worldPosition+(own.worldOrientation*Vector([0,-10,10])),(1,0,0))
                    
            
            
main()

Attachments

LocalCone.blend (479 KB)

2

This is really great, thanks again BPR.

There are heaps of other applications for this as well, such as checking for what the player can and can’t see.

3

i use this code to find the angle.
less math :stuck_out_tongue:


import bge

cont = bge.logic.getCurrentController()
scene = bge.logic.getCurrentScene()

own = cont.owner 
player = scene.objects["player"]

targetVec = player.worldPosition - own.worldPosition

facingVec = own.worldOrientation.col[1]
angle = facingVec.angle(targetVec)


...
4

Thanks :smiley:

I figured out the other way on my own,

also localizing a point to another object is very very handy for all sorts of things.
(like the component jacks in wrectified)