Managing Collisions Using Operators and Observables
Learn to emit values through the takeWhile operator.
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When a shot hits an enemy, we want both the shot and the enemy to disappear. Let’s define a helper function to detect whether two targets have collided or not:
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function collision(target1, target2){return (target1.x > target2.x - 20 && target1.x < target2.x + 20) &&(target1.y > target2.y - 20 && target1.y < target2.y + 20);}
Now, let’s modify the helper function paintHeroShots to check whether each shot hits an enemy or not. For cases where a hit occurs, we’ll set a property isDead to true on the enemy that has been hit, and we’ll set the ...
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