Predictive trajectory line of GameObject (SOLVED)

Questions
4

Here you go:

Projectile Trajectory Demo.zip (58.2 KB)
Click and drag to change the trajectory, right-click to fire.

You can look up the formula for an ideal projectile’s trajectory:

-- Projectile position at a given time after launch
x = initial_pos.x + initial_velocity.x * time
y = initial_pos.y + initial_velocity.y * time - 1/2 * G * time * time

This doesn’t seem to match quite perfectly to Defold (it’s a little high at the apex), but it’s pretty darn close. You probably just have to tweak the gravity a tiny bit to match it up.

[Edit] Yeah, try multiplying G by 1.01, then it looks pretty good (at the end of line 4 of player.script in my demo)

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