p5play JavaScript Logic Drill: Physics & Interaction

You have a "Player" and a "Key" sprite. You want the key to follow the player's exact movement only AFTER the player has touched it once. What is the most logical way to track this state?

• Check if (player.overlapping(key)) every frame.
• Use a while loop to pause the game
• Create a boolean variable like hasKey = false; and set it to true when they collide.
• Use key.x = player.x at the very start of the setup() function.

You want to create a "Ghost" enemy that moves at a constant speed toward the player's current location. Which method is most effective for an intermediate designer to handle the math of moving toward a moving target?

• ghost.x = player.x;
• ghost.vel.x = player.x - ghost.x;
• ghost.moveTowards(player, 0.02);
• ghost.direction = player.rotation;

You are designing a "Pinball" game. When the ball hits a "Bumper," you want the Bumper to grow in size slightly for just one second and then shrink back. What logic should be used to trigger the growth?

• if (ball.colliding(bumper))
• if (ball.collides(bumper))
• if (ball.overlapping(bumper))
• if (ball.vel.y > 0)

A programmer wants to make a "Locked Door" that only opens if the player has the blueKey AND the redKey. Which JavaScript logic correctly checks for both?

• if (hasBlueKey || hasRedKey)
• if (hasBlueKey = true && hasRedKey = true)
• if (hasBlueKey && hasRedKey)
• if (hasBlueKey !! hasRedKey)

You are building a "Pause" menu. When the variable isPaused is true, you want all sprites to stop moving, but you don't want to remove them. Which p5play property logic is most efficient for the "World"?

• world.remove();
• allSprites.visible = false;
• world.step(); (Controlling the physics update manually)
• sprites.vel = 0; (Looping through every sprite to reset velocity)