Flash MX 2004 Games : Art to ActionScript

Flash MX 2004 Games
Figure 18.3 The effect of ramping between moving the player to the ball and to three times the ball’s diameter
10 //Move out by 3 times ball diameter
11 x *= _root.BALLDIAMETER3;
12 y *= _root.BALLDIAMETER3;
13 gx = x + _root.Pitch.Ball._x;
14 gy = y + _root.Pitch.Ball._y;
15 //Create a ramp between the outer target and the ball
16 //a is target proportion
17 //b is ball proportion
18 if (balldist>_root.BALLDIAMETER3){
19 a = 1;
20 b = 0;
21 }else{
22 a = (balldist - _root.BALLDIAMETER)/_root.BALLDIAMETER3;
23 b = 1 - a;
24 }
25
26 c = _root.ROTATIONFRAMES/3;
27 x = a * (_x - gx) + b * (_x - _root.Pitch.Ball._x);
28 y = a * (_y - gy) + b * (_y - _root.Pitch.Ball._y);
29 angle = Math.atan2(y, x) + _root.PI;
30 frame = int(angle/_root.FRAMETORADIANS) + 1;
31
32 if ( balldist c && frame < (_root.ROTATIONFRAMES - c)){
34 //Test whether the player is running back
35 //If so and the balldist less than the ball
36 //diameter then kick ball
290