doodle/dev-assets/doodads/azulian/azulian-red.js
Noah Petherbridge 08e65c32b5 Overhaul the Platformer Physics System
* Player character now experiences acceleration and friction when
  walking around the map!
* Actor position and movement had to be converted from int's
  (render.Point) to float64's to support fine-grained acceleration
  steps.
* Added "physics" package and physics.Vector to be a float64 counterpart
  for render.Point. Vector is used for uix.Actor.Position() for the sake
  of movement math. Vector is flattened back to a render.Point for
  collision purposes, since the levels and hitboxes are pixel-bound.
* Refactor the uix.Actor to no longer extend the doodads.Drawing (so it
  can have a Position that's a Vector instead of a Point). This broke
  some code that expected `.Doodad` to directly reference the
  Drawing.Doodad: now you had to refer to it as `a.Drawing.Doodad` which
  was ugly. Added convenience method .Doodad() for a shortcut.
* Moved functions like GetBoundingRect() from doodads package to
  collision, where it uses its own slimmer Actor interface for just the
  relevant methods it needs.
2020-04-04 21:00:32 -07:00

41 lines
1.1 KiB
JavaScript

function main() {
log.Info("Azulian '%s' initialized!", Self.Doodad().Title);
var playerSpeed = 4;
var gravity = 4;
var Vx = Vy = 0;
var direction = "right";
Self.SetMobile(true);
Self.SetGravity(true);
Self.AddAnimation("walk-left", 100, ["red-wl1", "red-wl2", "red-wl3", "red-wl4"]);
Self.AddAnimation("walk-right", 100, ["red-wr1", "red-wr2", "red-wr3", "red-wr4"]);
// Sample our X position every few frames and detect if we've hit a solid wall.
var sampleTick = 0;
var sampleRate = 5;
var lastSampledX = 0;
setInterval(function() {
if (sampleTick % sampleRate === 0) {
var curX = Self.Position().X;
var delta = Math.abs(curX - lastSampledX);
if (delta < 5) {
direction = direction === "right" ? "left" : "right";
}
lastSampledX = curX;
}
sampleTick++;
// TODO: Vector() requires floats, pain in the butt for JS,
// the JS API should be friendlier and custom...
var Vx = parseFloat(playerSpeed * (direction === "left" ? -1 : 1));
Self.SetVelocity(Vector(Vx, 0.0));
if (!Self.IsAnimating()) {
Self.PlayAnimation("walk-"+direction, null);
}
}, 100);
}