Builder.prototype.displayingUpdate = function(elapsed) {
if(this.menu.width < menuWidth) {
this.menu.width = this.menu.grow(elapsed);
}
if(input.state.hasPointer) {
var origin = this.camera.project(this.cell);
if(geo.lengthSquared(input.state, origin) > (menuWidth * menuWidth)) {
this.state = 'dismissing';
this.menu.shrink = tween(this.menu.width, 0, 300, tween.smooth);
} else {
var v = vector(origin, input.state);
var third = Math.PI * 2 / 3;
var entityType;
var a = v.angle() - Math.PI; // off by 180 from the canvas arc()
if(a < 0) a = (2 * Math.PI) + a; // normalize negative angles
if(a < third) {
entityType = Generator;
} else if(a < 2 * third) {
entityType = Miner;
} else if(a < 3 * third) {
entityType = Turret;
} else {
throw new Error('?');
}
if(!entityType.cost) throw new Error('no cost for unit: ' + entityType);
if(this.level.money < entityType.cost) return;
this.level.money -= entityType.cost;
var entity = new entityType();
entity.hydrate({
x: this.cell.x,
y: this.cell.y,
context: this.level
});
this.gameObjects.friendlies.push(entity);
this.state = 'dismissing';
this.menu.shrink = tween(this.menu.width, 0, 300, tween.smooth);
}
}
};
Builder.prototype.idleUpdate = function(elapsed) {
if(!input.state.handled && input.state.hasPointer && input.state.pointers.length === 1) {
var worldCoords = this.camera.toWorldSpace(input.state);
worldCoords.x = Math.round(worldCoords.x);
worldCoords.y = Math.round(worldCoords.y);
if(isInGameBounds(worldCoords)) {
this.cell = worldCoords;
this.state = 'scanning';
this.menu.grow = tween(0, menuWidth, 300, tween.smooth);
input.state.handled = true;
}
}
};