dev: town

app/ecs/component.js

@@ -38,7 +38,8 @@ export default class Component {
       return [];
     }
     const allocated = this.allocateMany(entries.length);
-    const {properties} = this.constructor.schema.specification;
+    const {properties} = this.constructor.schema.specification.concrete;
+    const Schema = this.constructor.schema.constructor;
     const keys = Object.keys(properties);
     const promises = [];
     for (let i = 0; i < entries.length; ++i) {
@@ -47,13 +48,15 @@ export default class Component {
       this.data[allocated[i]].entity = entityId;
       for (let k = 0; k < keys.length; ++k) {
         const j = keys[k];
-        const {defaultValue} = properties[j];
         const instance = this.data[allocated[i]];
         if (j in values) {
           instance[j] = values[j];
         }
-        else if ('undefined' !== typeof defaultValue) {
+        else {
-          instance[j] = defaultValue;
+          const defaultValue = Schema.defaultValue(properties[j]);
+          if ('undefined' !== typeof defaultValue) {
+            instance[j] = defaultValue;
+          }
         }
       }
       promises.push(this.load(this.data[allocated[i]]));
@@ -67,7 +70,7 @@ export default class Component {
   }
 
   deserialize(entityId, view, offset) {
-    const {properties} = this.constructor.schema.specification;
+    const {properties} = this.constructor.schema.specification.concrete;
     const instance = this.get(entityId);
     const deserialized = this.constructor.schema.deserialize(view, offset);
     for (const key in properties) {
@@ -96,11 +99,11 @@ export default class Component {
   }
 
   static filterDefaults(instance) {
-    const {properties} = this.schema.specification;
+    const {properties} = this.schema.specification.concrete;
+    const Schema = this.schema.constructor;
     const json = {};
     for (const key in properties) {
-      const {defaultValue} = properties[key];
+      if (key in instance && instance[key] !== Schema.defaultValue(properties[key])) {
-      if (key in instance && instance[key] !== defaultValue) {
         json[key] = instance[key];
       }
     }
@@ -136,16 +139,16 @@ export default class Component {
 
   instanceFromSchema() {
     const Component = this;
-    const {specification} = Component.constructor.schema;
+    const {concrete} = Component.constructor.schema.specification;
+    const Schema = Component.constructor.schema.constructor;
     const Instance = class {
       $$entity = 0;
       constructor() {
         this.$$reset();
       }
       $$reset() {
-        for (const key in specification.properties) {
+        for (const key in concrete.properties) {
-          const {defaultValue} = specification.properties[key];
+          this[`$$${key}`] = Schema.defaultValue(concrete.properties[key]);
-          this[`$$${key}`] = defaultValue;
         }
       }
       destroy() {}
@@ -166,7 +169,7 @@ export default class Component {
         this.$$reset();
       },
     };
-    for (const key in specification.properties) {
+    for (const key in concrete.properties) {
       properties[key] = {
         get: function get() {
           return this[`$$${key}`];

app/ecs/components/collider.js

@@ -1,5 +1,5 @@
 import Component from '@/ecs/component.js';
-import {intersects} from '@/util/math.js';
+import {distance, intersects} from '@/util/math.js';
 
 import vector2d from './helpers/vector-2d';
 
@@ -30,6 +30,22 @@ export default class Collider extends Component {
         }
         return aabbs;
       }
+      closest(aabb) {
+        const entity = ecs.get(this.entity);
+        return Array.from(ecs.system('Colliders').within(aabb))
+          .filter((other) => other !== entity)
+          .sort(({Position: l}, {Position: r}) => {
+            return distance(entity.Position, l) > distance(entity.Position, r) ? -1 : 1;
+          });
+      }
+      destroy() {
+        const entity = ecs.get(this.entity);
+        for (const otherId in this.collidingWith) {
+          const other = ecs.get(otherId);
+          delete entity.Collider.collidingWith[other.id];
+          delete other.Collider.collidingWith[entity.id];
+        }
+      }
       isCollidingWith(other) {
         const {aabb, aabbs} = this;
         const {aabb: otherAabb, aabbs: otherAabbs} = other;

app/ecs/components/interacts.js

@@ -9,16 +9,16 @@ export default class Interacts extends Component {
         let x0 = Position.x - 8;
         let y0 = Position.y - 8;
         if (0 === Direction.direction) {
-          y0 -= 16
+          y0 -= 12
         }
         if (1 === Direction.direction) {
-          x0 += 16
+          x0 += 12
         }
         if (2 === Direction.direction) {
-          y0 += 16
+          y0 += 12
         }
         if (3 === Direction.direction) {
-          x0 -= 16
+          x0 -= 12
         }
         return {x0, x1: x0 + 15, y0, y1: y0 + 15};
       }

app/ecs/components/tags.js

@@ -0,0 +1,19 @@
+import Component from '@/ecs/component.js';
+
+export default class Tags extends Component {
+  instanceFromSchema() {
+    return class TagsInstance extends super.instanceFromSchema() {
+      has(tag) {
+        return this.tags.includes(tag);
+      }
+    };
+  }
+  static properties = {
+    tags: {
+      type: 'array',
+      subtype: {
+        type: 'string',
+      },
+    },
+  };
+}

app/ecs/ecs.js

@@ -178,7 +178,11 @@ export default class Ecs {
 
   deindex(entityIds) {
     for (const systemName in this.Systems) {
-      this.Systems[systemName].deindex(entityIds);
+      const System = this.Systems[systemName];
+      if (!System.active) {
+        continue;
+      }
+      System.deindex(entityIds);
     }
   }
 
@@ -233,12 +237,14 @@ export default class Ecs {
         }
         destroying[componentName].push(entityId);
       }
-      this.$$entities[entityId] = undefined;
-      this.diff[entityId] = false;
     }
     for (const i in destroying) {
       this.Components[i].destroyMany(destroying[i]);
     }
+    for (const entityId of entityIds) {
+      this.$$entities[entityId] = undefined;
+      this.diff[entityId] = false;
+    }
   }
 
   get entities() {
@@ -382,7 +388,11 @@ export default class Ecs {
 
   reindex(entityIds) {
     for (const systemName in this.Systems) {
-      this.Systems[systemName].reindex(entityIds);
+      const System = this.Systems[systemName];
+      if (!System.active) {
+        continue;
+      }
+      System.reindex(entityIds);
     }
   }
 

app/ecs/schema-types/array.js

@@ -0,0 +1,40 @@
+export default function (Schema) {
+  return {
+    defaultValue: () => [],
+    deserialize: (view, offset, {subtype}) => {
+      const length = view.getUint32(offset.value, true);
+      offset.value += 4;
+      const value = [];
+      for (let i = 0; i < length; ++i) {
+        value.push(Schema.deserialize(view, offset, subtype));
+      }
+      return value;
+    },
+    normalize: ({subtype}) => {
+      return {
+        subtype: Schema.normalize(subtype),
+      }
+    },
+    serialize: (source, view, offset, {subtype}) => {
+      view.setUint32(offset, source.length, true);
+      let size = 4;
+      for (const element of source) {
+        size += Schema.serialize(
+          element,
+          view,
+          offset + size,
+          subtype,
+        );
+      }
+      return size;
+    },
+    sizeOf: (instance, {subtype}) => {
+      let size = 4;
+      for (const element of instance) {
+        size += Schema.sizeOf(element, subtype);
+      }
+      return size;
+    },
+    staticSizeOf: () => 0,
+  };
+}

app/ecs/schema-types/float32.js

@@ -0,0 +1,16 @@
+export default function () {
+  return {
+    defaultValue: () => 0,
+    deserialize: (view, offset) => {
+      const value = view.getFloat32(offset.value, true);
+      offset.value += 4;
+      return value;
+    },
+    serialize: (source, view, offset) => {
+      view.setFloat32(offset, source, true);
+      return 4;
+    },
+    sizeOf: () => 4,
+    staticSizeOf: () => 4,
+  };
+}

app/ecs/schema-types/float64.js

@@ -0,0 +1,16 @@
+export default function () {
+  return {
+    defaultValue: () => 0,
+    deserialize: (view, offset) => {
+      const value = view.getFloat64(offset.value, true);
+      offset.value += 8;
+      return value;
+    },
+    serialize: (source, view, offset) => {
+      view.setFloat64(offset, source, true);
+      return 8;
+    },
+    sizeOf: () => 8,
+    staticSizeOf: () => 8,
+  };
+}

app/ecs/schema-types/int16.js

@@ -0,0 +1,16 @@
+export default function () {
+  return {
+    defaultValue: () => 0,
+    deserialize: (view, offset) => {
+      const value = view.getInt16(offset.value, true);
+      offset.value += 2;
+      return value;
+    },
+    serialize: (source, view, offset) => {
+      view.setInt16(offset, source, true);
+      return 2;
+    },
+    sizeOf: () => 2,
+    staticSizeOf: () => 2,
+  };
+}

app/ecs/schema-types/int32.js

@@ -0,0 +1,16 @@
+export default function () {
+  return {
+    defaultValue: () => 0,
+    deserialize: (view, offset) => {
+      const value = view.getInt32(offset.value, true);
+      offset.value += 4;
+      return value;
+    },
+    serialize: (source, view, offset) => {
+      view.setInt32(offset, source, true);
+      return 4;
+    },
+    sizeOf: () => 4,
+    staticSizeOf: () => 4,
+  };
+}

app/ecs/schema-types/int64.js

@@ -0,0 +1,16 @@
+export default function () {
+  return {
+    defaultValue: () => 0n,
+    deserialize: (view, offset) => {
+      const value = view.getBigInt64(offset.value, true);
+      offset.value += 8;
+      return value;
+    },
+    serialize: (source, view, offset) => {
+      view.setBigInt64(offset, source, true);
+      return 8;
+    },
+    sizeOf: () => 8,
+    staticSizeOf: () => 8,
+  };
+}

app/ecs/schema-types/int8.js

@@ -0,0 +1,16 @@
+export default function () {
+  return {
+    defaultValue: () => 0,
+    deserialize: (view, offset) => {
+      const value = view.getInt8(offset.value, true);
+      offset.value += 1;
+      return value;
+    },
+    serialize: (source, view, offset) => {
+      view.setInt8(offset, source, true);
+      return 1;
+    },
+    sizeOf: () => 1,
+    staticSizeOf: () => 1,
+  };
+}

app/ecs/schema-types/map.js

@@ -0,0 +1,50 @@
+export default function (Schema) {
+  return {
+    defaultValue: () => ({}),
+    deserialize: (view, offset, concrete) => {
+      const length = view.getUint32(offset.value, true);
+      offset.value += 4;
+      const value = {};
+      for (let i = 0; i < length; ++i) {
+        const key = Schema.deserialize(view, offset, concrete.key);
+        value[key] = Schema.deserialize(view, offset, concrete.value);
+      }
+      return value;
+    },
+    normalize: ({value}) => {
+      return {
+        key: Schema.normalize({type: 'string'}),
+        value: Schema.normalize(value),
+      }
+    },
+    serialize: (source, view, offset, concrete) => {
+      const keys = Object.keys(source);
+      view.setUint32(offset, keys.length, true);
+      let size = 4;
+      for (const key of keys) {
+        size += Schema.serialize(
+          key,
+          view,
+          offset + size,
+          concrete.key,
+        );
+        size += Schema.serialize(
+          source[key],
+          view,
+          offset + size,
+          concrete.value,
+        );
+      }
+      return size;
+    },
+    sizeOf: (instance, concrete) => {
+      let size = 4;
+      for (const key in instance) {
+        size += Schema.sizeOf(key, concrete.key);
+        size += Schema.sizeOf(instance[key], concrete.value);
+      }
+      return size;
+    },
+    staticSizeOf: () => 0,
+  };
+}

app/ecs/schema-types/object.js

@@ -0,0 +1,55 @@
+export default function (Schema) {
+  return {
+    defaultValue: ({properties}) => {
+      const object = {};
+      for (const key in properties) {
+        object[key] = Schema.defaultValue(properties[key]);
+      }
+      return object;
+    },
+    deserialize: (view, offset, {properties}) => {
+      const value = {};
+      for (const key in properties) {
+        value[key] = Schema.deserialize(view, offset, properties[key]);
+      }
+      return value;
+    },
+    normalize: ({properties}) => {
+      const normalized = {properties: {}};
+      for (const key in properties) {
+        normalized.properties[key] = Schema.normalize(properties[key])
+      }
+      return normalized;
+    },
+    serialize: (source, view, offset, {properties}) => {
+      let size = 0;
+      for (const key in properties) {
+        size += Schema.serialize(
+          source[key],
+          view,
+          offset + size,
+          properties[key],
+        );
+      }
+      return size;
+    },
+    sizeOf: (instance, {properties}) => {
+      let size = 0;
+      for (const key in properties) {
+        size += Schema.sizeOf(instance[key], properties[key]);
+      }
+      return size;
+    },
+    staticSizeOf: ({properties}) => {
+      let size = 0;
+      for (const key in properties) {
+        const propertySize = Schema.size(properties[key]);
+        if (0 === propertySize) {
+          return 0;
+        }
+        size += propertySize;
+      }
+      return size;
+    },
+  };
+}

app/ecs/schema-types/string.js

@@ -0,0 +1,31 @@
+const decoder = new TextDecoder();
+const encoder = new TextEncoder();
+
+export default function () {
+  return {
+    defaultValue: () => '',
+    deserialize: (view, offset) => {
+      const length = view.getUint32(offset.value, true);
+      offset.value += 4;
+      const {buffer, byteOffset} = view;
+      const value = decoder.decode(new DataView(buffer, byteOffset + offset.value, length));
+      offset.value += length;
+      return value;
+    },
+    serialize: (source, view, offset) => {
+      const bytes = encoder.encode(source);
+      view.setUint32(offset, bytes.length, true);
+      offset += 4;
+      for (let i = 0; i < bytes.length; ++i) {
+        view.setUint8(offset++, bytes[i]);
+      }
+      return 4 + bytes.length;
+    },
+    sizeOf: (instance) => {
+      let size = 4;
+      size += (encoder.encode(instance)).length;
+      return size;
+    },
+    staticSizeOf: () => 0,
+  };
+}

app/ecs/schema-types/uint16.js

@@ -0,0 +1,16 @@
+export default function () {
+  return {
+    defaultValue: () => 0,
+    deserialize: (view, offset) => {
+      const value = view.getUint16(offset.value, true);
+      offset.value += 2;
+      return value;
+    },
+    serialize: (source, view, offset) => {
+      view.setUint16(offset, source, true);
+      return 2;
+    },
+    sizeOf: () => 2,
+    staticSizeOf: () => 2,
+  };
+}

app/ecs/schema-types/uint32.js

@@ -0,0 +1,16 @@
+export default function () {
+  return {
+    defaultValue: () => 0,
+    deserialize: (view, offset) => {
+      const value = view.getUint32(offset.value, true);
+      offset.value += 4;
+      return value;
+    },
+    serialize: (source, view, offset) => {
+      view.setUint32(offset, source, true);
+      return 4;
+    },
+    sizeOf: () => 4,
+    staticSizeOf: () => 4,
+  };
+}

app/ecs/schema-types/uint64.js

@@ -0,0 +1,16 @@
+export default function () {
+  return {
+    defaultValue: () => 0n,
+    deserialize: (view, offset) => {
+      const value = view.getBigUint64(offset.value, true);
+      offset.value += 8;
+      return value;
+    },
+    serialize: (source, view, offset) => {
+      view.setBigUint64(offset, source, true);
+      return 8;
+    },
+    sizeOf: () => 8,
+    staticSizeOf: () => 8,
+  };
+}

app/ecs/schema-types/uint8.js

@@ -0,0 +1,16 @@
+export default function () {
+  return {
+    defaultValue: () => 0,
+    deserialize: (view, offset) => {
+      const value = view.getUint8(offset.value, true);
+      offset.value += 1;
+      return value;
+    },
+    serialize: (source, view, offset) => {
+      view.setUint8(offset, source, true);
+      return 1;
+    },
+    sizeOf: () => 1,
+    staticSizeOf: () => 1,
+  };
+}

app/ecs/schema.js

@@ -1,303 +1,66 @@
-const encoder = new TextEncoder();
-
 export default class Schema {
 
-  $$size = 0;
+  static $$types = {};
 
   specification;
 
-  static viewGetMethods = {
-    uint8: 'getUint8',
-    int8: 'getInt8',
-    uint16: 'getUint16',
-    int16: 'getInt16',
-    uint32: 'getUint32',
-    int32: 'getInt32',
-    float32: 'getFloat32',
-    float64: 'getFloat64',
-    int64: 'getBigInt64',
-    uint64: 'getBigUint64',
-  };
-
-  static viewSetMethods = {
-    uint8: 'setUint8',
-    int8: 'setInt8',
-    uint16: 'setUint16',
-    int16: 'setInt16',
-    uint32: 'setUint32',
-    int32: 'setInt32',
-    float32: 'setFloat32',
-    float64: 'setFloat64',
-    int64: 'setBigInt64',
-    uint64: 'setBigUint64',
-  };
-
   constructor(specification) {
     this.specification = this.constructor.normalize(specification);
   }
 
-  static deserialize(view, offset, specification) {
+  static defaultValue({$, concrete}) {
-    const viewGetMethod = this.viewGetMethods[specification.type];
+    if (concrete.defaultValue) {
-    if (viewGetMethod) {
+      return concrete.defaultValue;
-      const value = view[viewGetMethod](offset.value, true);
-      offset.value += this.size(specification);
-      return value;
-    }
-    switch (specification.type) {
-      case 'array': {
-        const length = view.getUint32(offset.value, true);
-        offset.value += 4;
-        const value = [];
-        for (let i = 0; i < length; ++i) {
-          value.push(this.deserialize(view, offset, specification.subtype));
-        }
-        return value;
-      }
-      case 'map': {
-        const length = view.getUint32(offset.value, true);
-        offset.value += 4;
-        const value = {};
-        for (let i = 0; i < length; ++i) {
-          const key = this.deserialize(view, offset, {type: 'string'});
-          value[key] = this.deserialize(view, offset, specification.value);
-        }
-        return value;
-      }
-      case 'object': {
-        const value = {};
-        for (const key in specification.properties) {
-          value[key] = this.deserialize(view, offset, specification.properties[key]);
-        }
-        return value;
-      }
-      case 'string': {
-        const length = view.getUint32(offset.value, true);
-        offset.value += 4;
-        const {buffer, byteOffset} = view;
-        const decoder = new TextDecoder();
-        const value = decoder.decode(new DataView(buffer, byteOffset + offset.value, length));
-        offset.value += length;
-        return value;
-      }
-    }
-  }
-
-  deserialize(view, offset = 0) {
-    const wrapped = {value: offset};
-    return this.constructor.deserialize(view, wrapped, this.specification);
-  }
-
-  static defaultValue(specification) {
-    if (specification.defaultValue) {
-      return specification.defaultValue;
-    }
-    switch (specification.type) {
-      case 'uint8': case 'int8':
-      case 'uint16': case 'int16':
-      case 'uint32': case 'int32':
-      case 'uint64': case 'int64':
-      case 'float32': case 'float64': {
-        return 0;
-      }
-      case 'array': {
-        return [];
-      }
-      case 'map': {
-        return {};
-      }
-      case 'object': {
-        const object = {};
-        for (const key in specification.properties) {
-          object[key] = this.defaultValue(specification.properties[key]);
-        }
-        return object;
-      }
-      case 'string': {
-        return '';
-      }
     }
+    return $.defaultValue(concrete);
   }
 
   defaultValue() {
     return this.constructor.defaultValue(this.specification);
   }
 
-  static normalize(specification) {
+  static deserialize(view, offset, {$, concrete}) {
-    let normalized = specification;
+    return $.deserialize(view, offset, concrete);
-    switch (specification.type) {
-      case 'array': {
-        normalized.subtype = this.normalize(specification.subtype);
-        break;
-      }
-      case 'map': {
-        normalized.value = this.normalize(specification.value);
-        break;
-      }
-      case 'object': {
-        for (const key in specification.properties) {
-          normalized.properties[key] = this.normalize(specification.properties[key])
-        }
-        break;
-      }
-      case 'uint8':
-      case 'int8':
-      case 'uint16':
-      case 'int16':
-      case 'uint32':
-      case 'int32':
-      case 'uint64':
-      case 'int64':
-      case 'float32':
-      case 'float64':
-      case 'string': {
-        break;
-      }
-      /* v8 ignore next 2 */
-      default:
-        throw new TypeError(`invalid specification: ${JSON.stringify(specification)}`);
-    }
-    return {...normalized, defaultValue: this.defaultValue(normalized)};
   }
 
-  static serialize(source, view, offset, specification) {
+  deserialize(view, offset = 0) {
-    const viewSetMethod = this.viewSetMethods[specification.type];
+    return this.constructor.deserialize(view, {value: offset}, this.specification);
-    if (viewSetMethod) {
+  }
-      view[viewSetMethod](offset, source, true);
+
-      return this.size(specification);
+  static normalize({type, ...rest}) {
-    }
+    const $$type = this.$$types[type];
-    switch (specification.type) {
+    if (!$$type) {
-      case 'array': {
+      throw new TypeError(`unregistered schema type '${type}'`);
-        view.setUint32(offset, source.length, true);
-        let arraySize = 4;
-        for (const element of source) {
-          arraySize += this.serialize(
-            element,
-            view,
-            offset + arraySize,
-            specification.subtype,
-          );
-        }
-        return arraySize;
-      }
-      case 'map': {
-        const keys = Object.keys(source);
-        view.setUint32(offset, keys.length, true);
-        let mapSize = 4;
-        for (const key of keys) {
-          mapSize += this.serialize(
-            key,
-            view,
-            offset + mapSize,
-            {type: 'string'},
-          );
-          mapSize += this.serialize(
-            source[key],
-            view,
-            offset + mapSize,
-            specification.value,
-          );
-        }
-        return mapSize;
-      }
-      case 'object': {
-        let objectSize = 0;
-        for (const key in specification.properties) {
-          objectSize += this.serialize(
-            source[key],
-            view,
-            offset + objectSize,
-            specification.properties[key],
-          );
-        }
-        return objectSize;
-      }
-      case 'string': {
-        const encoder = new TextEncoder();
-        const bytes = encoder.encode(source);
-        view.setUint32(offset, bytes.length, true);
-        offset += 4;
-        for (let i = 0; i < bytes.length; ++i) {
-          view.setUint8(offset++, bytes[i]);
-        }
-        return 4 + bytes.length;
-      }
     }
+    return {
+      $: this.$$types[type],
+      concrete: $$type.normalize ? $$type.normalize(rest) : rest,
+    };
+  }
+
+  static serialize(source, view, offset, {$, concrete}) {
+    return $.serialize(source, view, offset, concrete);
   }
 
   serialize(source, view, offset = 0) {
     this.constructor.serialize(source, view, offset, this.specification);
   }
 
-  static sizeOf(concrete, specification) {
+  static sizeOf(instance, {$, concrete}) {
-    const size = this.size(specification);
+    return $.sizeOf(instance, concrete);
-    if (size > 0) {
-      return size;
-    }
-    let fullSize = 0;
-    const {type} = specification;
-    switch (type) {
-      case 'array': {
-        fullSize += 4;
-        for (const element of concrete) {
-          fullSize += this.sizeOf(element, specification.subtype);
-        }
-        break;
-      }
-      case 'map': {
-        fullSize += 4;
-        for (const key in concrete) {
-          fullSize += this.sizeOf(key, {type: 'string'});
-          fullSize += this.sizeOf(concrete[key], specification.value);
-        }
-        break;
-      }
-      case 'object': {
-        for (const key in specification.properties) {
-          fullSize += this.sizeOf(concrete[key], specification.properties[key]);
-        }
-        break;
-      }
-      case 'string':
-        fullSize += 4;
-        fullSize += (encoder.encode(concrete)).length;
-        break;
-    }
-    return fullSize;
   }
 
-  sizeOf(concrete) {
+  sizeOf(instance) {
-    return this.constructor.sizeOf(concrete, this.specification);
+    return this.constructor.sizeOf(instance, this.specification);
   }
 
-  static size(specification) {
+  static size({$, concrete}) {
-    switch (specification.type) {
+    return $.staticSizeOf(concrete);
-      case 'array': return 0;
-      case 'map': return 0; // TODO could be fixed-size w/ fixed-size key
-      case 'object': {
-        let size = 0;
-        for (const key in specification.properties) {
-          const propertySize = this.size(specification.properties[key]);
-          if (0 === propertySize) {
-            return 0;
-          }
-          size += propertySize;
-        }
-        return size;
-      }
-      case 'uint8': case 'int8': {
-        return 1;
-      }
-      case 'uint16': case 'int16': {
-        return 2;
-      }
-      case 'uint32': case 'int32': case 'float32': {
-        return 4;
-      }
-      case 'uint64': case 'int64': case 'float64': {
-        return 8;
-      }
-      default: return 0;
-    }
   }
 
 }
+
+const imports = import.meta.glob('./schema-types/*.js', {eager: true, import: 'default'});
+for (const path in imports) {
+  Schema.$$types[path.replace(/.\/schema-types\/(.*)\.js/, '$1')] = imports[path](Schema);
+}

app/ecs/schema.test.js

@@ -4,10 +4,6 @@ import Schema from './schema.js';
 
 test('defaults values', () => {
   const compare = (specification, value) => {
-    expect(Schema.defaultValue(specification))
-      .to.deep.equal(value);
-    expect(new Schema(specification).specification.defaultValue)
-      .to.deep.equal(value);
     expect(new Schema(specification).defaultValue())
       .to.deep.equal(value);
   };
@@ -18,13 +14,17 @@ test('defaults values', () => {
     'int16',
     'uint32',
     'int32',
-    'uint64',
-    'int64',
     'float32',
     'float64',
   ].forEach((type) => {
     compare({type}, 0);
   });
+  [
+    'uint64',
+    'int64',
+  ].forEach((type) => {
+    compare({type}, 0n);
+  });
   compare({type: 'string'}, '');
   compare({type: 'array', subtype: {type: 'string'}}, []);
   compare(
@@ -167,11 +167,11 @@ test('encodes and decodes', () => {
     [{type: 'object', properties: {foo: {type: 'uint8'}, bar: {type: 'string'}}}, {foo: 64, bar: 'baz'}],
     [{type: 'object', properties: {foo: {type: 'uint8'}}}, {foo: 64}],
   ];
-  entries.forEach(([specification, concrete]) => {
+  entries.forEach(([specification, instance]) => {
     const schema = new Schema(specification);
-    const view = new DataView(new ArrayBuffer(schema.sizeOf(concrete)));
+    const view = new DataView(new ArrayBuffer(schema.sizeOf(instance)));
-    schema.serialize(concrete, view);
+    schema.serialize(instance, view);
-    expect(concrete)
+    expect(instance)
       .to.deep.equal(schema.deserialize(view));
   });
 });

app/ecs/systems/colliders.js

@@ -39,32 +39,31 @@ export default class Colliders extends System {
   }
 
   tick() {
-    const seen = {};
+    const collisions = new Map();
+    for (const entity of this.ecs.changed(['Position'])) {
+      this.updateHash(entity);
+    }
     for (const entity of this.ecs.changed(['Position'])) {
-      if (seen[entity.id]) {
-        continue;
-      }
-      seen[entity.id] = true;
       if (!entity.Collider) {
         continue;
       }
-      const {collidingWith: wasCollidingWith} = entity.Collider;
+      collisions.set(entity, new Set());
-      entity.Collider.collidingWith = {};
-      this.updateHash(entity);
       for (const other of this.within(entity.Collider.aabb)) {
-        if (seen[other.id]) {
+        if (entity === other) {
           continue;
         }
-        seen[other.id] = true;
+        if (!collisions.has(other)) {
-        if (!other.Collider) {
+          collisions.set(other, new Set());
+        }
+        if (!other.Collider || collisions.get(other).has(entity)) {
           continue;
         }
-        delete other.Collider.collidingWith[entity.id];
         const intersections = entity.Collider.isCollidingWith(other.Collider);
         if (intersections.length > 0) {
-          entity.Collider.collidingWith[other.id] = true;
+          collisions.get(entity).add(other);
-          other.Collider.collidingWith[entity.id] = true;
+          if (!entity.Collider.collidingWith[other.id]) {
-          if (!wasCollidingWith[other.id]) {
+            entity.Collider.collidingWith[other.id] = true;
+            other.Collider.collidingWith[entity.id] = true;
             if (entity.Collider.collisionStartScriptInstance) {
               const script = entity.Collider.collisionStartScriptInstance.clone();
               script.context.intersections = intersections;
@@ -117,22 +116,20 @@ export default class Colliders extends System {
             }
           }
         }
-      }
+        else {
-      for (const otherId in wasCollidingWith) {
+          if (entity.Collider.collidingWith[other.id]) {
-        if (!entity.Collider.collidingWith[otherId]) {
+            if (entity.Collider.collisionEndScriptInstance) {
-          const other = this.ecs.get(otherId);
+              const script = entity.Collider.collisionEndScriptInstance.clone();
-          if (!other || !other.Collider) {
+              script.context.other = other;
-            continue;
+              entity.Ticking.add(script.ticker());
-          }
+            }
-          if (entity.Collider.collisionEndScriptInstance) {
+            if (other.Collider.collisionEndScriptInstance) {
-            const script = entity.Collider.collisionEndScriptInstance.clone();
+              const script = other.Collider.collisionEndScriptInstance.clone();
-            script.context.other = other;
+              script.context.other = entity;
-            entity.Ticking.add(script.ticker());
+              other.Ticking.add(script.ticker());
-          }
+            }
-          if (other.Collider.collisionEndScriptInstance) {
+            delete entity.Collider.collidingWith[other.id];
-            const script = other.Collider.collisionEndScriptInstance.clone();
+            delete other.Collider.collidingWith[entity.id];
-            script.context.other = entity;
-            other.Ticking.add(script.ticker());
           }
         }
       }

app/ecs/systems/interactions.js

@@ -1,5 +1,4 @@
 import {System} from '@/ecs/index.js';
-import {distance} from '@/util/math.js';
 
 export default class Interactions extends System {
 
@@ -11,25 +10,16 @@ export default class Interactions extends System {
 
   tick() {
     for (const entity of this.select('default')) {
-      const {Interacts} = entity;
+      const {Collider, Interacts} = entity;
-      let willInteract = false;
+      let willInteractWith = 0;
-      const entities = Array.from(this.ecs.system('Colliders').within(Interacts.aabb()))
+      const entities = Collider.closest(Interacts.aabb());
-        .filter((other) => other !== entity)
-        .sort(({Position: l}, {Position: r}) => {
-          return distance(entity.Position, l) > distance(entity.Position, r) ? -1 : 1;
-        });
       for (const other of entities) {
-        if (other === entity) {
+        if (other.Interactive?.interacting) {
-          continue;
+          willInteractWith = other.id;
-        }
+          break;
-        if (other.Interactive && other.Interactive.interacting) {
-          Interacts.willInteractWith = other.id;
-          willInteract = true;
         }
       }
-      if (!willInteract) {
+      Interacts.willInteractWith = willInteractWith;
-        Interacts.willInteractWith = 0;
-      }
     }
   }
 

app/ecs/systems/visible-aabbs.js

@@ -21,7 +21,16 @@ export default class VisibleAabbs extends System {
   reindex(entities) {
     for (const id of entities) {
       if (1 === id) {
-        this.hash = new SpatialHash(this.ecs.get(1).AreaSize);
+        const {x, y} = this.ecs.get(1).AreaSize;
+        if (
+          !this.hash ||
+          (
+            this.hash.area.x !== x
+            || this.hash.area.y !== y
+          )
+        ) {
+          this.hash = new SpatialHash(this.ecs.get(1).AreaSize);
+        }
       }
     }
     super.reindex(entities);

app/net/packets/download.js

@@ -0,0 +1,3 @@
+import Packet from '@/net/packet.js';
+
+export default class Download extends Packet {}

app/react/components/client-ecs.js

@@ -8,6 +8,17 @@ const cache = new LRUCache({
 });
 
 export default class ClientEcs extends Ecs {
+  constructor(specification) {
+    super(specification);
+    [
+      'Colliders',
+    ].forEach((defaultSystem) => {
+      const System = this.system(defaultSystem);
+      if (System) {
+        System.active = true;
+      }
+    });
+  }
   async readAsset(uri) {
     if (!cache.has(uri)) {
       const {promise, resolve, reject} = withResolvers();

app/react/components/dom/dialogue-caret.jsx

@@ -0,0 +1,103 @@
+import {RESOLUTION} from '@/util/constants.js';
+
+import styles from './dialogue-caret.module.css';
+
+const CARET_SIZE = 18;
+
+export default function DialogueCaret({
+  camera,
+  dialogue,
+  dimensions,
+  scale,
+}) {
+  const origin = 'function' === typeof dialogue.origin
+    ? dialogue.origin()
+    : dialogue.origin || {x: 0, y: 0};
+  let position = 'function' === typeof dialogue.position
+    ? dialogue.position()
+    : dialogue.position || {x: 0, y: 0};
+  position = {
+    x: position.x + dialogue.offset.x,
+    y: position.y + dialogue.offset.y,
+  };
+  const bounds = {
+    x: dimensions.w / (2 * scale),
+    y: dimensions.h / (2 * scale),
+  };
+  const left = Math.max(
+    Math.min(
+      position.x * scale - camera.x,
+      RESOLUTION.x - bounds.x * scale - 16,
+    ),
+    bounds.x * scale + 16,
+  );
+  const top = Math.max(
+    Math.min(
+      position.y * scale - camera.y,
+      RESOLUTION.y - bounds.y * scale - 16,
+    ),
+    bounds.y * scale + 88,
+  );
+  const offsetPosition = {
+    x: ((position.x * scale - camera.x) - left) / scale,
+    y: ((position.y * scale - camera.y) - top) / scale,
+  };
+  const difference = {
+    x: origin.x - position.x + offsetPosition.x,
+    y: origin.y - position.y + offsetPosition.y,
+  };
+  const within = {
+    x: Math.abs(difference.x) < bounds.x,
+    y: Math.abs(difference.y) < bounds.y,
+  };
+  const caretPosition = {
+    x: Math.max(-bounds.x, Math.min(origin.x - position.x + offsetPosition.x, bounds.x)),
+    y: Math.max(-bounds.y, Math.min(origin.y - position.y + offsetPosition.y, bounds.y)),
+  };
+  let caretRotation = Math.atan2(
+    difference.y - caretPosition.y,
+    difference.x - caretPosition.x,
+  );
+  caretRotation += Math.PI * 1.5;
+  if (within.x) {
+    caretPosition.y = bounds.y * Math.sign(difference.y);
+    if (within.y) {
+      if (Math.sign(difference.y) > 0) {
+        caretRotation = Math.PI;
+      }
+      else {
+        caretRotation = 0;
+      }
+    }
+  }
+  else if (within.y) {
+    caretPosition.x = bounds.x * Math.sign(difference.x);
+  }
+  // const corner = {
+  //   x: (bounds.x - Math.abs(caretPosition.x)) * Math.sign(caretPosition.x),
+  //   y: (bounds.y - Math.abs(caretPosition.y)) * Math.sign(caretPosition.y),
+  // };
+  caretPosition.x *= scale;
+  caretPosition.y *= scale;
+  caretPosition.x += -Math.sin(caretRotation) * (CARET_SIZE / 2);
+  caretPosition.y += Math.cos(caretRotation) * (CARET_SIZE / 2);
+  return (
+    <svg
+      className={styles.caret}
+      viewBox="0 0 24 24"
+      width={CARET_SIZE}
+      height={CARET_SIZE}
+      style={{
+        transform: `
+          translate(
+            calc(-50% + ${caretPosition.x}px),
+            calc(-50% + ${caretPosition.y}px)
+          )
+          rotate(${caretRotation}rad)
+        `,
+      }}
+    >
+      <polygon points="12 0, 18 10, 12 23, 23 10, 20 0" />
+    </svg>
+  );
+}

app/react/components/dom/dialogue-caret.module.css

@@ -0,0 +1,8 @@
+.caret {
+  position: absolute;
+  fill: #ffffff;
+  stroke: #00000044;
+  stroke-width: 2px;
+  left: 50%;
+  top: 50%;
+}

app/react/components/dom/dialogue.jsx

@@ -5,10 +5,9 @@ import {useRadians} from '@/react/context/radians.js';
 import {RESOLUTION} from '@/util/constants.js';
 import {render} from '@/util/dialogue.js';
 
+import DialogueCaret from './dialogue-caret.jsx';
 import styles from './dialogue.module.css';
 
-const CARET_SIZE = 12;
-
 export default function Dialogue({
   camera,
   dialogue,
@@ -75,66 +74,31 @@ export default function Dialogue({
     () => render(dialogue.letters, styles.letter),
     [dialogue.letters],
   );
-  const origin = 'function' === typeof dialogue.origin
+  let position = 'function' === typeof dialogue.position
-    ? dialogue.origin()
+    ? dialogue.position()
-    : dialogue.origin || {x: 0, y: 0};
+    : dialogue.position || {x: 0, y: 0};
+  position = {
+    x: position.x + dialogue.offset.x,
+    y: position.y + dialogue.offset.y,
+  };
   const bounds = {
     x: dimensions.w / (2 * scale),
     y: dimensions.h / (2 * scale),
   };
   const left = Math.max(
     Math.min(
-      dialogue.position.x * scale - camera.x,
+      position.x * scale - camera.x,
       RESOLUTION.x - bounds.x * scale - 16,
     ),
     bounds.x * scale + 16,
   );
   const top = Math.max(
     Math.min(
-      dialogue.position.y * scale - camera.y,
+      position.y * scale - camera.y,
       RESOLUTION.y - bounds.y * scale - 16,
     ),
     bounds.y * scale + 88,
   );
-  const offsetPosition = {
-    x: ((dialogue.position.x * scale - camera.x) - left) / scale,
-    y: ((dialogue.position.y * scale - camera.y) - top) / scale,
-  };
-  const difference = {
-    x: origin.x - dialogue.position.x + offsetPosition.x,
-    y: origin.y - dialogue.position.y + offsetPosition.y,
-  };
-  const within = {
-    x: Math.abs(difference.x) < bounds.x,
-    y: Math.abs(difference.y) < bounds.y,
-  };
-  const caretPosition = {
-    x: Math.max(-bounds.x, Math.min(origin.x - dialogue.position.x + offsetPosition.x, bounds.x)),
-    y: Math.max(-bounds.y, Math.min(origin.y - dialogue.position.y + offsetPosition.y, bounds.y)),
-  };
-  let caretRotation = Math.atan2(
-    difference.y - caretPosition.y,
-    difference.x - caretPosition.x,
-  );
-  caretRotation += Math.PI * 1.5;
-  if (within.x) {
-    caretPosition.y = bounds.y * Math.sign(difference.y);
-    if (within.y) {
-      if (Math.sign(difference.y) > 0) {
-        caretRotation = Math.PI;
-      }
-      else {
-        caretRotation = 0;
-      }
-    }
-  }
-  else if (within.y) {
-    caretPosition.x = bounds.x * Math.sign(difference.x);
-  }
-  caretPosition.x *= scale;
-  caretPosition.y *= scale;
-  caretPosition.x += -Math.sin(caretRotation) * (CARET_SIZE / 2);
-  caretPosition.y += Math.cos(caretRotation) * (CARET_SIZE / 2);
   return (
     <div
       className={styles.dialogue}
@@ -144,23 +108,13 @@ export default function Dialogue({
         top: `${top}px`,
       }}
     >
-      <svg
+      <DialogueCaret
-        className={styles.caret}
+        camera={camera}
-        viewBox="0 0 24 24"
+        dialogue={dialogue}
-        width={CARET_SIZE}
+        dimensions={dimensions}
-        height={CARET_SIZE}
+        scale={scale}
-        style={{
+
-          transform: `
+      />
-            translate(
-              calc(-50% + ${caretPosition.x}px),
-              calc(-50% + ${caretPosition.y}px)
-            )
-            rotate(${caretRotation}rad)
-          `,
-        }}
-      >
-        <polygon points="0 0, 24 0, 12 24" />
-      </svg>
       <p className={styles.letters}>
         {localRender(caret, radians)}
       </p>

app/react/components/dom/dialogue.module.css

@@ -1,24 +1,22 @@
-.caret {
-  position: absolute;
-  fill: #00000044;
-  stroke: white;
-  left: 50%;
-  top: 50%;
-}
-
 .dialogue {
-  background-color: #00000044;
+  background-color: #02023999;
-  border: solid 1px white;
+  border: solid 3px white;
   border-radius: 8px;
   color: white;
   overflow-wrap: break-word;
-  padding: 1em;
+  padding: 12px;
   position: fixed;
   margin: 0;
-  margin-right: -33%;
+  margin-right: -66%;
+  text-shadow:
+    0px -1px 0px black,
+    1px 0px 0px black,
+    0px 1px 0px black,
+    -1px 0px 0px black
+  ;
   transform: translate(-50%, -50%);
   user-select: none;
-  max-width: 33%;
+  max-width: 66%;
 }
 
 .letters {

app/react/components/dom/dialogues.module.css

@@ -1,6 +1,6 @@
 .dialogues {
   font-family: Cookbook, Georgia, 'Times New Roman', Times, serif;
-  font-size: 16px;
+  font-size: 22px;
 }
 
 @font-face {

app/react/components/dom/entities.jsx

@@ -38,6 +38,15 @@ export default function Entities({
         const {dialogues} = updating[id].Interlocutor;
         for (const key in dialogue) {
           dialogues[key] = dialogue[key];
+          if (!dialogues[key].offset) {
+            dialogues[key].offset = {x: 0, y: 0};
+          }
+          if ('track' === dialogues[key].origin) {
+            dialogues[key].origin = () => updating[id].Position;
+          }
+          if ('track' === dialogues[key].position) {
+            dialogues[key].position = () => updating[id].Position;
+          }
           dialogues[key].letters = parseLetters(dialogues[key].body);
           setChatMessages((chatMessages) => ({
             [[id, key].join('-')]: dialogues[key].letters,

app/react/components/pixi/tile-layer.jsx

@@ -1,35 +1,19 @@
 import {RenderTexture} from '@pixi/core';
 import {Container} from '@pixi/display';
+import {Graphics} from '@pixi/graphics';
 import {PixiComponent, useApp} from '@pixi/react';
 import {Sprite} from '@pixi/sprite';
 import '@pixi/spritesheet'; // NECESSARY!
 import {CompositeTilemap} from '@pixi/tilemap';
 
 import {useAsset} from '@/react/context/assets.js';
-import {CHUNK_SIZE} from '@/util/constants.js';
+import {CHUNK_SIZE, RESOLUTION} from '@/util/constants.js';
 
 import {deferredLighting} from './lights.js';
 
 const TileLayerInternal = PixiComponent('TileLayer', {
-  create: ({group, tileLayer}) => {
+  create: () => {
     const container = new Container();
-    const cy = Math.ceil(tileLayer.area.y / CHUNK_SIZE);
-    const cx = Math.ceil(tileLayer.area.x / CHUNK_SIZE);
-    for (let iy = 0; iy < cy; ++iy) {
-      for (let ix = 0; ix < cx; ++ix) {
-        const tilemap = new CompositeTilemap();
-        const renderTexture = RenderTexture.create({
-          width: tileLayer.tileSize.x * CHUNK_SIZE,
-          height: tileLayer.tileSize.y * CHUNK_SIZE,
-        });
-        const sprite = new Sprite(renderTexture);
-        sprite.x = tileLayer.tileSize.x * CHUNK_SIZE * ix;
-        sprite.y = tileLayer.tileSize.y * CHUNK_SIZE * iy;
-        sprite.parentGroup = group;
-        sprite.tilemap = tilemap;
-        container.addChild(sprite);
-      }
-    }
     return container;
   },
   applyProps: (container, {tileLayer: oldTileLayer}, props) => {
@@ -39,9 +23,67 @@ const TileLayerInternal = PixiComponent('TileLayer', {
     if (tileLayer === oldTileLayer) {
       return;
     }
+    if (
+      !oldTileLayer
+      || (
+        oldTileLayer.area.x !== tileLayer.area.x
+        || oldTileLayer.area.y !== tileLayer.area.y
+        || oldTileLayer.tileSize.x !== tileLayer.tileSize.x
+        || oldTileLayer.tileSize.y !== tileLayer.tileSize.y
+      )
+    ) {
+      container.removeChildren();
+      const {area, tileSize} = tileLayer;
+      const g = new Graphics();
+      g.beginFill(group === deferredLighting.diffuseGroup ? 0x000000 : 0x7777ff);
+      // outer frame
+      g.drawRect(
+        -RESOLUTION.x / 2,
+        -RESOLUTION.y / 2,
+        area.x * tileSize.x + RESOLUTION.x,
+        RESOLUTION.y / 2,
+      );
+      g.drawRect(
+        -RESOLUTION.x / 2,
+        -RESOLUTION.y / 2,
+        RESOLUTION.x / 2,
+        area.y * tileSize.y + RESOLUTION.y,
+      );
+      g.drawRect(
+        area.x * tileSize.x,
+        0,
+        RESOLUTION.x / 2,
+        area.y * tileSize.y,
+      );
+      g.drawRect(
+        0,
+        area.y * tileSize.y,
+        area.x * tileSize.x,
+        RESOLUTION.y / 2,
+      );
+      g.parentGroup = group;
+      container.addChild(g);
+      const cy = Math.ceil(area.y / CHUNK_SIZE);
+      const cx = Math.ceil(area.x / CHUNK_SIZE);
+      for (let iy = 0; iy < cy; ++iy) {
+        for (let ix = 0; ix < cx; ++ix) {
+          const tilemap = new CompositeTilemap();
+          const renderTexture = RenderTexture.create({
+            width: tileSize.x * CHUNK_SIZE,
+            height: tileSize.y * CHUNK_SIZE,
+          });
+          const sprite = new Sprite(renderTexture);
+          sprite.x = tileSize.x * CHUNK_SIZE * ix;
+          sprite.y = tileSize.y * CHUNK_SIZE * iy;
+          sprite.parentGroup = group;
+          sprite.tilemap = tilemap;
+          container.addChild(sprite);
+        }
+      }
+    }
     for (const i in tileLayer.$$chunks) {
       if (!oldTileLayer || oldTileLayer.$$chunks[i] !== tileLayer.$$chunks[i]) {
-        const {texture, tilemap} = container.children[i];
+        const {texture, tilemap} = container.children[parseInt(i) + 1];
         tilemap.clear();
         const ax = Math.ceil(tileLayer.area.x / CHUNK_SIZE);
         const cy = Math.floor(i / ax);

app/routes/_main-menu.play.$.$/route.jsx

@@ -98,6 +98,25 @@ export default function PlaySpecific() {
       client.removePacketListener('ConnectionStatus', onConnectionStatus);
     };
   }, [client]);
+  useEffect(() => {
+    if (!client) {
+      return;
+    }
+    function onDownload({data, filename}) {
+      var blob = new Blob(
+        [(new TextEncoder()).encode(JSON.stringify(data))],
+        {type: 'application/json'},
+      );
+      var link = document.createElement('a');
+      link.href = window.URL.createObjectURL(blob);
+      link.download = filename;
+      link.click();
+    }
+    client.addPacketListener('Download', onDownload);
+    return () => {
+      client.removePacketListener('Download', onDownload);
+    };
+  }, [client]);
   useEffect(() => {
     if (!client || !disconnected) {
       return;

app/server/create/homestead.js

@@ -1,3 +1,5 @@
+import data from '../../../public/assets/dev/homestead.json';
+
 export default async function createHomestead(id) {
   const area = {x: 100, y: 60};
   const entities = [];
@@ -8,7 +10,7 @@ export default async function createHomestead(id) {
       layers: [
         {
           area,
-          data: Array(area.x * area.y).fill(0).map(() => 1 + Math.floor(Math.random() * 4)),
+          data,
           source: '/assets/tileset.json',
           tileSize: {x: 16, y: 16},
         },
@@ -79,8 +81,9 @@ export default async function createHomestead(id) {
         subject.Interlocutor.dialogue({
           body: "Sure, I'm a treasure chest. Probably. Do you really think that means you're about to get some treasure? Hah!",
           monopolizer: true,
-          origin: subject.Position.toJSON(),
+          offset: {x: 0, y: -48},
-          position: {x: subject.Position.x, y: subject.Position.y - 32},
+          origin: 'track',
+          position: 'track',
         })
       `,
     },
@@ -115,6 +118,27 @@ export default async function createHomestead(id) {
     Controlled: {},
     Direction: {direction: 2},
     Forces: {},
+    Interactive: {
+      interacting: 1,
+      interactScript: `
+        const lines = [
+          'mrowwr',
+          'p<shake>rrr</shake>o<wave>wwwww</wave>',
+          'mew<rate frequency={0.5}> </rate>mew!',
+          'me<wave>wwwww</wave>',
+          '\\\\*pu<shake>rrrrr</shake>\\\\*',
+        ];
+        const line = lines[Math.floor(Math.random() * lines.length)];
+        subject.Interlocutor.dialogue({
+          body: line,
+          linger: 2,
+          offset: {x: 0, y: -32},
+          origin: 'track',
+          position: 'track',
+        })
+      `,
+    },
+    Interlocutor: {},
     Position: {x: 250, y: 250},
     Speed: {speed: 20},
     Sprite: {
@@ -123,11 +147,41 @@ export default async function createHomestead(id) {
       source: '/assets/kitty/kitty.json',
       speed: 0.115,
     },
+    Tags: {tags: ['kittan']},
     Ticking: {},
     VisibleAabb: {},
   };
-  for (let i = 0; i < 10; ++i) {
+  for (let i = 0; i < 30; ++i) {
     entities.push(kitty);
   }
+  entities.push({
+    Collider: {
+      bodies: [
+        {
+          points: [
+            {x: -8, y: -16},
+            {x: 7, y: -16},
+            {x: 7, y: 15},
+            {x: -8, y: 15},
+          ],
+        },
+      ],
+      collisionStartScript: `
+        ecs.switchEcs(
+          other,
+          'town',
+          {
+            Position: {
+              x: 940,
+              y: 480,
+            },
+          },
+        );
+      `,
+    },
+
+    Position: {x: 8, y: 432},
+    Ticking: {},
+  });
   return entities;
 }

app/server/create/player.js

@@ -38,13 +38,17 @@ export default async function createPlayer(id) {
           qty: 1,
           source: '/assets/hoe/hoe.json',
         },
+        5: {
+          qty: 1,
+          source: '/assets/brush/brush.json',
+        },
       },
     },
     Health: {health: 100},
     Light: {},
     Magnet: {strength: 24},
     Player: {},
-    Position: {x: 128, y: 128},
+    Position: {x: 128, y: 448},
     Speed: {speed: 100},
     Sound: {},
     Sprite: {

app/server/create/town.js

@@ -0,0 +1,57 @@
+import data from '../../../public/assets/dev/town.json';
+
+export default async function createTown() {
+  const area = {x: 60, y: 60};
+  const entities = [];
+  entities.push({
+    AreaSize: {x: area.x * 16, y: area.y * 16},
+    Ticking: {},
+    TileLayers: {
+      layers: [
+        {
+          area,
+          data,
+          source: '/assets/tileset.json',
+          tileSize: {x: 16, y: 16},
+        },
+        {
+          area,
+          data: Array(area.x * area.y).fill(0),
+          source: '/assets/tileset.json',
+          tileSize: {x: 16, y: 16},
+        },
+      ],
+    },
+    Time: {},
+    Water: {water: {}},
+  });
+  entities.push({
+    Collider: {
+      bodies: [
+        {
+          points: [
+            {x: -8, y: -16},
+            {x: 7, y: -16},
+            {x: 7, y: 15},
+            {x: -8, y: 15},
+          ],
+        },
+      ],
+      collisionStartScript: `
+        ecs.switchEcs(
+          other,
+          ['homesteads', '0'].join('/'),
+          {
+            Position: {
+              x: 20,
+              y: 438,
+            },
+          },
+        );
+      `,
+    },
+    Position: {x: 952, y: 480},
+    Ticking: {},
+  });
+  return entities;
+}

app/server/engine.js

@@ -14,6 +14,7 @@ import createForest from './create/forest.js';
 import createHomestead from './create/homestead.js';
 import createHouse from './create/house.js';
 import createPlayer from './create/player.js';
+import createTown from './create/town.js';
 
 const cache = new LRUCache({
   max: 128,
@@ -125,22 +126,47 @@ export default class Engine {
         Interacts,
         Interlocutor,
         Inventory,
-        Position,
         Wielder,
       } = entity;
+      const ecs = this.ecses[Ecs.path];
       for (const payload of payloads) {
         switch (payload.type) {
           case 'chat': {
+            if (payload.value.startsWith('/')) {
+              const [command, ...args] = payload.value.slice(1).split(' ');
+              switch (command) {
+                case 'dump': {
+                  switch (args[0]) {
+                    case 'tiles': {
+                      const {TileLayers} = ecs.get(1);
+                      this.server.send(
+                        connection,
+                        {
+                          type: 'Download',
+                          payload: {
+                            data: TileLayers.layer(0).data,
+                            filename: 'tiles.json',
+                          },
+                        },
+                      );
+                      break;
+                    }
+                  }
+                  break;
+                }
+              }
+              break;
+            }
             Interlocutor.dialogue({
               body: payload.value,
               linger: 5,
-              origin: Position.toJSON(),
+              offset: {x: 0, y: -40},
-              position: {x: Position.x, y: Position.y - 32},
+              origin: 'track',
+              position: 'track',
             });
             break;
           }
           case 'paint': {
-            const ecs = this.ecses[Ecs.path];
             const {TileLayers} = ecs.get(1);
             const {brush, layer: paintLayer, stamp} = payload.value;
             const layer = TileLayers.layer(paintLayer);
@@ -181,7 +207,6 @@ export default class Engine {
             if (!Controlled.locked) {
               if (payload.value) {
                 if (Interacts.willInteractWith) {
-                  const ecs = this.ecses[Ecs.path];
                   const subject = ecs.get(Interacts.willInteractWith);
                   subject.Interactive.interact(entity);
                 }
@@ -233,6 +258,25 @@ export default class Engine {
   }
 
   async load() {
+    let townData;
+    try {
+      townData = await this.server.readData('town');
+    }
+    catch (error) {
+      if ('ENOENT' !== error.code) {
+        throw error;
+      }
+      const town = this.createEcs();
+      for (const entity of await createTown()) {
+        await town.create(entity);
+      }
+      await this.saveEcs('town', town);
+      townData = await this.server.readData('town');
+    }
+    this.ecses['town'] = await this.Ecs.deserialize(
+      this.createEcs(),
+      townData,
+    );
   }
 
   async loadEcs(path) {

app/server/worker.js

@@ -8,6 +8,7 @@ import createEcs from './create/ecs.js';
 import './create/forest.js';
 import './create/homestead.js';
 import './create/player.js';
+import './create/town.js';
 
 import Engine from './engine.js';
 
@@ -111,6 +112,19 @@ if (import.meta.hot) {
     await engine.saveEcs('homesteads/0', homestead);
     resolve();
   });
+import.meta.hot.accept('./create/town.js', async ({default: createTown}) => {
+    const {promise, resolve} = withResolvers();
+    promises.push(promise);
+    await before.promise;
+    delete engine.ecses['town'];
+    await engine.server.removeData('town');
+    const town = createEcs(engine.Ecs);
+    for (const entity of await createTown()) {
+      await town.create(entity);
+    }
+    await engine.saveEcs('town', town);
+    resolve();
+  });
   import.meta.hot.on('vite:afterUpdate', async () => {
     await Promise.all(promises);
     postMessage(encode({type: 'ConnectionStatus', payload: 'aborted'}));

app/util/constants.js

@@ -1,6 +1,6 @@
 export const CHUNK_SIZE = 32;
 
-export const CLIENT_LATENCY = 100;
+export const CLIENT_LATENCY = 0;
 
 export const CLIENT_PREDICTION = true;
 
@@ -11,6 +11,6 @@ export const RESOLUTION = {
   y: 450,
 };
 
-export const SERVER_LATENCY = 100;
+export const SERVER_LATENCY = 0;
 
 export const TPS = 60;

app/util/dialogue.js

@@ -1,11 +1,15 @@
 import {createElement} from 'react';
 import mdx from 'remark-mdx';
 import parse from 'remark-parse';
+import {createNoise2D} from 'simplex-noise';
 import {unified} from 'unified';
 import {visitParents as visit} from 'unist-util-visit-parents';
 
 import {TAU} from '@/util/math.js';
 
+const rawNoise = createNoise2D();
+const noise = (x, y) => (1 + rawNoise(x, y)) / 2;
+
 const parser = unified().use(parse).use(mdx);
 
 function computeParams(ancestors) {
@@ -96,8 +100,9 @@ export function render(letters, className) {
         }
         if (params.shake) {
           const {magnitude = 1} = params.shake;
-          left += (Math.random() * magnitude * 2) - magnitude;
+          const r = radians + TAU * indices.shake / params.shake.length;
-          top += (Math.random() * magnitude * 2) - magnitude;
+          left += (noise(-Math.sin(r) * 32, Math.cos(r) * 32) * magnitude * 2) - magnitude;
+          top += (noise(Math.sin(r) * 32, -Math.cos(r) * 32) * magnitude * 2) - magnitude;
         }
         if (params.em) {
           fontStyle = 'italic';

app/util/gather-test/first.js

@@ -1,6 +0,0 @@
-export default class First {
-  static gathered(id, key) {
-    this.id = id;
-    this.key = key;
-  }
-}

app/util/gather-test/second.js

@@ -1,6 +0,0 @@
-export default class Second {
-  static gathered(id, key) {
-    this.id = id;
-    this.key = key;
-  }
-}

app/util/gather.js

@@ -4,16 +4,16 @@ function capitalize(string) {
 
 export default function gather(imports, options = {}) {
   const {
-    mapperForPath = (path) => path.replace(/\.\/(.*)\.js/, '$1'),
+    pathToKey = (path) => (
-  } = options;
+      path.replace(/\.\/(.*)\.js/, '$1')
-  const Gathered = {};
-  for (const [path, Component] of Object.entries(imports).sort(([l], [r]) => l < r ? -1 : 1)) {
-    Gathered[
-      mapperForPath(path)
         .split('-')
         .map(capitalize)
         .join('')
-    ] = Component;
+    ),
+  } = options;
+  const Gathered = {};
+  for (const [path, Component] of Object.entries(imports).sort(([l], [r]) => l < r ? -1 : 1)) {
+    Gathered[pathToKey(path)] = Component;
   }
   return Gathered;
 }

app/util/gather.test.js

@@ -1,17 +0,0 @@
-import {expect, test} from 'vitest';
-
-import gather from './gather.js';
-
-import First from './gather-test/first.js';
-import Second from './gather-test/second.js';
-
-test('gathers', async () => {
-  const Gathered = gather(
-    import.meta.glob('./gather-test/*.js', {eager: true, import: 'default'}),
-    {mapperForPath: (path) => path.replace(/\.\/gather-test\/(.*)\.js/, '$1')},
-  );
-  expect(Gathered.First)
-    .to.equal(First);
-  expect(Gathered.Second)
-    .to.equal(Second);
-});

public/assets/brush/brush.json

@@ -0,0 +1,4 @@
+{
+  "icon": "/assets/brush/brush.png",
+  "start": "/assets/brush/start.js"
+}

public/assets/brush/start.js

@@ -0,0 +1,22 @@
+const {Collider, Controlled, Interacts, Inventory, Sound, Sprite} = wielder
+const entities = Collider.closest(Interacts.aabb());
+for (const entity of entities) {
+  const {Tags} = entity;
+  if (Tags && Tags.has('kittan')) {
+    Controlled.locked = 1
+    const [, direction] = Sprite.animation.split(':')
+    for (let i = 0; i < 2; ++i) {
+      Sound.play('/assets/brush/brush.wav');
+      Sprite.animation = ['moving', direction].join(':');
+      await wait(0.3)
+      Sprite.animation = ['idle', direction].join(':');
+      await wait(0.1)
+    }
+    Inventory.give({
+      qty: 1,
+      source: '/assets/furball/furball.json',
+    });
+    Controlled.locked = 0;
+    break;
+  }
+}

public/assets/furball/furball.json

@@ -0,0 +1,3 @@
+{
+  "icon": "/assets/furball/furball.png"
+}