Class PathBehavior

A string should have "x" in it to represent movement (from the speed settings of the behavior). It may have numbers, parentheses, the four basic operations, and any Math functions or properties (without the preceding "Math."). The overall movement of the particle and the expression value become x and y positions for the particle, respectively. The final position is rotated by the spawn rotation/angle of the particle.

A function merely needs to accept the "x" argument and output the a corresponding "y" value.

Some example paths:

• "sin(x/10) * 20" A sine wave path.
• "cos(x/100) * 30" Particles curve counterclockwise (for medium speed/low lifetime particles)
• "pow(x/10, 2) / 2" Particles curve clockwise (remember, +y is down).
• (x) => Math.floor(x) * 3 Supplying an existing function should look like this

Example configuration:

{
    "type": "movePath",
    "config": {
         "path": "round(sin(x) * 2",
         "speed": {
             "list": [{value: 10, time: 0}, {value: 100, time: 0.25}, {value: 0, time: 1}],
         },
         "minMult": 0.8
    }
}