Simple But Effective Algorithms

Chase And Evade

CHASE

if (alienship.x < player.x) alienship.x+= 5;

if (alienship.x > player.x) alienship.x-= 5;

if (alienship.y < player.y) alienship.y+= 5;

if (alienship.y > player.y) alienship.y-= 5;

EVADE

if (alienship.x < player.x) player.x+= 3;

if (alienship.x > player.x) player.x-= 3;

if (alienship.y < player.y) player.y+= 3;

if (alienship.y > player.y) player.y-= 3;

    Collision Detection Function

       bool Collide (int px, int py, int objx, int objy)

       {

         if (px >= objx - 20 && px <= objx + 20)

           if (py >= objy - 20 && py <= objy +20) return true;

        return false;

        } // End of function.

Program Tidbits

1.) Here  is an asteroid field example written in VC++. Try to add some more to what I have already done.

Asteroids.zip

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