122 lines
3.3 KiB
JavaScript
122 lines
3.3 KiB
JavaScript
let _ALL_NODES = new Map();
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class ComputeNode {
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/***
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* Make a generic compute node.
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* Adds the node to the global map of nodenames to nodes (for calling from html listeners).
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*
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* @param name : Name of the node (string). Must be unique. Must "fit in" a JS string (terminated by single quotes).
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*/
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constructor(name) {
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if (_ALL_NODES.has(name)) {
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throw 'Duplicate node name: ' + name;
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}
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_ALL_NODES.set(name, this)
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this.inputs = [];
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this.children = [];
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this.value = 0;
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this.name = name;
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this.update_task = null;
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this.update_time = Date.now();
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}
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/***
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* Request update of this compute node. Pushes updates to children.
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*/
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update(timestamp) {
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if (timestamp <= this.update_time) {
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return;
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}
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this.update_time = timestamp;
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let value_map = Map();
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for (const input of this.inputs) {
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value_map.set(input.name, input.get_value());
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}
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this.value = this.compute_func();
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for (const child of this.children) {
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child.update();
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}
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}
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/***
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* Get value of this compute node. Can't trigger update cascades (push based update, not pull based.)
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*/
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get_value() {
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return this.value
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}
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/***
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* Abstract method for computing something. Return value is set into this.value
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*/
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compute_func() {
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throw "no compute func specified";
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}
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link_to(parent_node) {
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this.inputs.push(parent_node)
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parent_node.children.push(this);
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}
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}
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/***
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* Schedule a ComputeNode to be updated.
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*
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* @param node_name : ComputeNode name to schedule an update for.
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*/
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function calcSchedule(node_name) {
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node = _ALL_NODES.get(node_name);
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if (node.update_task !== null) {
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clearTimeout(node.update_task);
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}
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node.update_task = setTimeout(function() {
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const timestamp = Date.now();
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node.update(timestamp);
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node.update_task = null;
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}, 500);
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}
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/***
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* Node for getting an item's stats from an item input field.
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*/
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class ItemStats extends ComputeNode {
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/***
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* Make an item stat pulling compute node.
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*
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* @param name: Name of this node.
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* @param item_input_field: Input field (html element) to listen for item names from.
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* @param none_item: Item object to use as the "none" for this field.
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*/
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constructor(name, item_input_field, none_item) {
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super(name);
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this.input_field.setAttribute("onInput", "calcSchedule('"+name+"');");
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this.input_field = item_input_field;
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this.none_item = none_item;
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}
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compute_func() {
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// built on the assumption of no one will type in CI/CR letter by letter
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let item_text = this.input_field.value;
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let item;
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if (item_text.slice(0, 3) == "CI-") {
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item = getCustomFromHash(item_text);
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}
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else if (item_text.slice(0, 3) == "CR-") {
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item = getCraftFromHash(item_text);
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}
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else if (itemMap.has(item_text)) {
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item = itemMap.get(item_text);
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}
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else if (tomeMap.has(item_text)) {
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item = tomeMap.get(item_text);
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}
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if (!item) {
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return this.none_item;
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}
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return item;
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}
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}
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