doodle/dev-assets/doodads/bird/bird.js

53 lines
1.3 KiB
JavaScript
Raw Normal View History

// Red bird mob.
function main() {
var speed = 4;
var Vx = Vy = 0;
var altitude = Self.Position().Y; // original height in the level
var direction = "left";
var states = {
flying: 0,
diving: 1,
};
var state = states.flying;
Self.SetMobile(true);
Self.SetGravity(false);
Self.SetHitbox(0, 10, 46, 32);
Self.AddAnimation("fly-left", 100, ["left-1", "left-2"]);
Self.AddAnimation("fly-right", 100, ["right-1", "right-2"]);
Events.OnCollide(function(e) {
if (e.Actor.IsMobile() && e.InHitbox) {
return false;
}
});
// Sample our X position every few frames and detect if we've hit a solid wall.
var sampleTick = 0;
var sampleRate = 2;
var lastSampledX = 0;
var lastSampledY = 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(speed * (direction === "left" ? -1 : 1));
Self.SetVelocity(Vector(Vx, 0.0));
if (!Self.IsAnimating()) {
Self.PlayAnimation("fly-"+direction, null);
}
}, 100);
}