All state changes now happen via mobx actions. Fixed bug that allowed users to save .qst files with names that are too long (and thus corrupting the file).

src/actions.ts

@@ -1,114 +0,0 @@
-import { ArrayBufferCursor } from './data/ArrayBufferCursor';
-import { applicationState } from './store';
-import { parseQuest, writeQuestQst } from './data/parsing/quest';
-import { parseNj, parseXj} from './data/parsing/ninja';
-import { getAreaSections } from './data/loading/areas';
-import { getNpcGeometry, getObjectGeometry } from './data/loading/entities';
-import { createObjectMesh, createNpcMesh } from './rendering/entities';
-import { createModelMesh } from './rendering/models';
-import { VisibleQuestEntity } from './domain';
-
-export function entitySelected(entity?: VisibleQuestEntity) {
-    applicationState.selectedEntity = entity;
-}
-
-export function loadFile(file: File) {
-    const reader = new FileReader();
-
-    reader.addEventListener('loadend', async () => {
-        if (!(reader.result instanceof ArrayBuffer)) {
-            console.error('Couldn\'t read file.');
-            return;
-        }
-
-        if (file.name.endsWith('.nj')) {
-            // Reset application state, then set the current model.
-            // Might want to do this in a MobX transaction.
-            resetModelAndQuestState();
-            applicationState.currentModel = createModelMesh(parseNj(new ArrayBufferCursor(reader.result, true)));
-        } else if (file.name.endsWith('.xj')) {
-            // Reset application state, then set the current model.
-            // Might want to do this in a MobX transaction.
-            resetModelAndQuestState();
-            applicationState.currentModel = createModelMesh(parseXj(new ArrayBufferCursor(reader.result, true)));
-        } else {
-            const quest = parseQuest(new ArrayBufferCursor(reader.result, true));
-
-            if (quest) {
-                // Reset application state, then set current quest and area in the correct order.
-                // Might want to do this in a MobX transaction.
-                resetModelAndQuestState();
-                applicationState.currentQuest = quest;
-
-                if (quest.areaVariants.length) {
-                    applicationState.currentArea = quest.areaVariants[0].area;
-                }
-
-                // Load section data.
-                for (const variant of quest.areaVariants) {
-                    const sections = await getAreaSections(quest.episode, variant.area.id, variant.id)
-                    variant.sections = sections;
-
-                    // Generate object geometry.
-                    for (const object of quest.objects.filter(o => o.areaId === variant.area.id)) {
-                        try {
-                            const geometry = await getObjectGeometry(object.type);
-                            object.object3d = createObjectMesh(object, sections, geometry);
-                        } catch (e) {
-                            console.error(e);
-                        }
-                    }
-
-                    // Generate NPC geometry.
-                    for (const npc of quest.npcs.filter(npc => npc.areaId === variant.area.id)) {
-                        try {
-                            const geometry = await getNpcGeometry(npc.type);
-                            npc.object3d = createNpcMesh(npc, sections, geometry);
-                        } catch (e) {
-                            console.error(e);
-                        }
-                    }
-                }
-            }
-        }
-    });
-
-    reader.readAsArrayBuffer(file);
-}
-
-export function currentAreaIdChanged(areaId?: number) {
-    applicationState.selectedEntity = undefined;
-
-    if (areaId == null) {
-        applicationState.currentArea = undefined;
-    } else if (applicationState.currentQuest) {
-        const areaVariant = applicationState.currentQuest.areaVariants.find(
-            variant => variant.area.id === areaId);
-        applicationState.currentArea = areaVariant && areaVariant.area;
-    }
-}
-
-export function saveCurrentQuestToFile(fileName: string) {
-    if (applicationState.currentQuest) {
-        const cursor = writeQuestQst(applicationState.currentQuest, fileName);
-
-        if (!fileName.endsWith('.qst')) {
-            fileName += '.qst';
-        }
-
-        const a = document.createElement('a');
-        a.href = URL.createObjectURL(new Blob([cursor.buffer]));
-        a.download = fileName;
-        document.body.appendChild(a);
-        a.click();
-        URL.revokeObjectURL(a.href);
-        document.body.removeChild(a);
-    }
-}
-
-function resetModelAndQuestState() {
-    applicationState.currentQuest = undefined;
-    applicationState.currentArea = undefined;
-    applicationState.selectedEntity = undefined;
-    applicationState.currentModel = undefined;
-}

src/actions/appState.ts

@@ -0,0 +1,66 @@
+import { writeQuestQst } from '../data/parsing/quest';
+import { VisibleQuestEntity, Quest } from '../domain';
+import { appStateStore } from '../stores/AppStateStore';
+import { action } from 'mobx';
+import { Object3D } from 'three';
+
+/**
+ * Reset application state, then set the current model.
+ */
+export const setModel = action('setModel', (model?: Object3D) => {
+    resetModelAndQuestState();
+    appStateStore.currentModel = model;
+});
+
+/**
+ * Reset application state, then set current quest and area.
+ */
+export const setQuest = action('setQuest', (quest?: Quest) => {
+    resetModelAndQuestState();
+    appStateStore.currentQuest = quest;
+
+    if (quest && quest.areaVariants.length) {
+        appStateStore.currentArea = quest.areaVariants[0].area;
+    }
+});
+
+function resetModelAndQuestState() {
+    appStateStore.currentQuest = undefined;
+    appStateStore.currentArea = undefined;
+    appStateStore.selectedEntity = undefined;
+    appStateStore.currentModel = undefined;
+}
+
+export const setSelectedEntity = action('setSelectedEntity', (entity?: VisibleQuestEntity) => {
+    appStateStore.selectedEntity = entity;
+});
+
+export const setCurrentAreaId = action('setCurrentAreaId', (areaId?: number) => {
+    appStateStore.selectedEntity = undefined;
+
+    if (areaId == null) {
+        appStateStore.currentArea = undefined;
+    } else if (appStateStore.currentQuest) {
+        const areaVariant = appStateStore.currentQuest.areaVariants.find(
+            variant => variant.area.id === areaId);
+        appStateStore.currentArea = areaVariant && areaVariant.area;
+    }
+});
+
+export const saveCurrentQuestToFile = (fileName: string) => {
+    if (appStateStore.currentQuest) {
+        const cursor = writeQuestQst(appStateStore.currentQuest, fileName);
+
+        if (!fileName.endsWith('.qst')) {
+            fileName += '.qst';
+        }
+
+        const a = document.createElement('a');
+        a.href = URL.createObjectURL(new Blob([cursor.buffer]));
+        a.download = fileName;
+        document.body.appendChild(a);
+        a.click();
+        URL.revokeObjectURL(a.href);
+        document.body.removeChild(a);
+    }
+};

src/actions/loadFile.ts

@@ -0,0 +1,100 @@
+import { action } from 'mobx';
+import { Object3D } from 'three';
+import { ArrayBufferCursor } from '../data/ArrayBufferCursor';
+import { getAreaSections } from '../data/loading/areas';
+import { getNpcGeometry, getObjectGeometry } from '../data/loading/entities';
+import { parseNj, parseXj } from '../data/parsing/ninja';
+import { parseQuest } from '../data/parsing/quest';
+import { AreaVariant, Section, Vec3, VisibleQuestEntity } from '../domain';
+import { createNpcMesh, createObjectMesh } from '../rendering/entities';
+import { createModelMesh } from '../rendering/models';
+import { setModel, setQuest } from './appState';
+
+export function loadFile(file: File) {
+    const reader = new FileReader();
+    reader.addEventListener('loadend', () => { loadend(file, reader) });
+    reader.readAsArrayBuffer(file);
+}
+
+// TODO: notify user of problems.
+async function loadend(file: File, reader: FileReader) {
+    if (!(reader.result instanceof ArrayBuffer)) {
+        console.error('Couldn\'t read file.');
+        return;
+    }
+
+    if (file.name.endsWith('.nj')) {
+        setModel(createModelMesh(parseNj(new ArrayBufferCursor(reader.result, true))));
+    } else if (file.name.endsWith('.xj')) {
+        setModel(createModelMesh(parseXj(new ArrayBufferCursor(reader.result, true))));
+    } else {
+        const quest = parseQuest(new ArrayBufferCursor(reader.result, true));
+        setQuest(quest);
+
+        if (quest) {
+            // Load section data.
+            for (const variant of quest.areaVariants) {
+                const sections = await getAreaSections(quest.episode, variant.area.id, variant.id);
+                setSectionsOnAreaVariant(variant, sections);
+
+                // Generate object geometry.
+                for (const object of quest.objects.filter(o => o.areaId === variant.area.id)) {
+                    try {
+                        const geometry = await getObjectGeometry(object.type);
+                        setSectionOnVisibleQuestEntity(object, sections);
+                        setObject3dOnVisibleQuestEntity(object, createObjectMesh(object, geometry));
+                    } catch (e) {
+                        console.error(e);
+                    }
+                }
+
+                // Generate NPC geometry.
+                for (const npc of quest.npcs.filter(npc => npc.areaId === variant.area.id)) {
+                    try {
+                        const geometry = await getNpcGeometry(npc.type);
+                        setSectionOnVisibleQuestEntity(npc, sections);
+                        setObject3dOnVisibleQuestEntity(npc, createNpcMesh(npc, geometry));
+                    } catch (e) {
+                        console.error(e);
+                    }
+                }
+            }
+        } else {
+            console.error('Couldn\'t parse quest file.');
+        }
+    }
+}
+
+const setSectionsOnAreaVariant = action('setSectionsOnAreaVariant',
+    (variant: AreaVariant, sections: Section[]) => {
+        variant.sections = sections;
+    }
+);
+
+const setSectionOnVisibleQuestEntity = action('setSectionOnVisibleQuestEntity',
+    (entity: VisibleQuestEntity, sections: Section[]) => {
+        let { x, y, z } = entity.position;
+
+        const section = sections.find(s => s.id === entity.sectionId);
+        entity.section = section;
+
+        if (section) {
+            const { x: secX, y: secY, z: secZ } = section.position;
+            const rotX = section.cosYAxisRotation * x + section.sinYAxisRotation * z;
+            const rotZ = -section.sinYAxisRotation * x + section.cosYAxisRotation * z;
+            x = rotX + secX;
+            y += secY;
+            z = rotZ + secZ;
+        } else {
+            console.warn(`Section ${entity.sectionId} not found.`);
+        }
+
+        entity.position = new Vec3(x, y, z);
+    }
+);
+
+const setObject3dOnVisibleQuestEntity = action('setObject3dOnVisibleQuestEntity',
+    (entity: VisibleQuestEntity, object3d: Object3D) => {
+        entity.object3d = object3d;
+    }
+);

src/actions/visibleQuestEntities.ts

@@ -0,0 +1,12 @@
+import { action } from "mobx";
+import { VisibleQuestEntity, Vec3, Section } from "../domain";
+
+export const setPositionOnVisibleQuestEntity = action('setPositionOnVisibleQuestEntity',
+    (entity: VisibleQuestEntity, position: Vec3, section?: Section) => {
+        entity.position = position;
+
+        if (section) {
+            entity.section = section;
+        }
+    }
+);

src/data/parsing/qst.ts

@@ -18,7 +18,7 @@ interface ParseQstResult {
  * Low level parsing function for .qst files.
  * Can only read the Blue Burst format.
  */
-export function parseQst(cursor: ArrayBufferCursor): ParseQstResult | null {
+export function parseQst(cursor: ArrayBufferCursor): ParseQstResult | undefined {
     // A .qst file contains two 88-byte headers that describe the embedded .dat and .bin files.
     let version = 'PC';
 
@@ -60,7 +60,7 @@ export function parseQst(cursor: ArrayBufferCursor): ParseQstResult | null {
             files
         };
     } else {
-        return null;
+        console.error(`Can't parse ${version} QST files.`);
     }
 }
 
@@ -206,6 +206,10 @@ function parseFiles(cursor: ArrayBufferCursor, expectedSizes: Map<string, number
 
 function writeFileHeaders(cursor: ArrayBufferCursor, files: SimpleQstContainedFile[]): void {
     for (const file of files) {
+        if (file.name.length > 16) {
+            throw Error(`File ${file.name} has a name longer than 16 characters.`);
+        }
+
         cursor.writeU16(88); // Header size.
         cursor.writeU16(0x44); // Magic number.
         cursor.writeU16(file.questNo || 0);
@@ -229,6 +233,10 @@ function writeFileHeaders(cursor: ArrayBufferCursor, files: SimpleQstContainedFi
             fileName2 = file.name2;
         }
 
+        if (fileName2.length > 24) {
+            throw Error(`File ${file.name} has a fileName2 length (${fileName2}) longer than 24 characters.`);
+        }
+
         cursor.writeStringAscii(fileName2, 24);
     }
 }

src/data/parsing/quest.ts

@@ -12,18 +12,18 @@ import {
     ObjectType,
     NpcType
 } from '../../domain';
-import { areaStore } from '../../store';
+import { areaStore } from '../../stores/AreaStore';
 
 /**
  * High level parsing function that delegates to lower level parsing functions.
  * 
  * Always delegates to parseQst at the moment.
  */
-export function parseQuest(cursor: ArrayBufferCursor): Quest | null {
+export function parseQuest(cursor: ArrayBufferCursor): Quest | undefined {
     const qst = parseQst(cursor);
 
     if (!qst) {
-        return null;
+        return;
     }
 
     let datFile = null;
@@ -39,8 +39,14 @@ export function parseQuest(cursor: ArrayBufferCursor): Quest | null {
 
     // TODO: deal with missing/multiple DAT or BIN file.
 
-    if (!datFile || !binFile) {
+    if (!datFile) {
-        return null;
+        console.error('File contains no DAT file.');
+        return;
+    }
+
+    if (!binFile) {
+        console.error('File contains no BIN file.');
+        return;
     }
 
     const dat = parseDat(prs.decompress(datFile.data));

src/index.tsx

@@ -5,6 +5,11 @@ import './index.css';
 import "normalize.css";
 import "@blueprintjs/core/lib/css/blueprint.css";
 import "@blueprintjs/icons/lib/css/blueprint-icons.css";
+import { configure } from 'mobx';
+
+configure({
+    enforceActions: 'observed'
+});
 
 ReactDOM.render(
     <ApplicationComponent />,

src/rendering/Renderer.ts

@@ -26,11 +26,11 @@ import {
     NPC_HOVER_COLOR,
     NPC_SELECTED_COLOR
 } from './entities';
+import { setSelectedEntity } from '../actions/appState';
+import { setPositionOnVisibleQuestEntity as setPositionAndSectionOnVisibleQuestEntity } from '../actions/visibleQuestEntities';
 
 const OrbitControls = OrbitControlsCreator(THREE);
 
-type OnSelectCallback = (visibleQuestEntity: VisibleQuestEntity | undefined) => void;
-
 interface PickEntityResult {
     object: Mesh;
     entity: VisibleQuestEntity;
@@ -58,14 +58,11 @@ export class Renderer {
     private renderGeometry = new Object3D();
     private objGeometry = new Object3D();
     private npcGeometry = new Object3D();
-    private onSelect?: OnSelectCallback;
     private hoveredData?: PickEntityResult;
     private selectedData?: PickEntityResult;
     private model?: Object3D;
 
-    constructor({ onSelect }: { onSelect: OnSelectCallback }) {
+    constructor() {
-        this.onSelect = onSelect;
-
         this.renderer.domElement.addEventListener(
             'mousedown', this.onMouseDown);
         this.renderer.domElement.addEventListener(
@@ -266,8 +263,8 @@ export class Renderer {
             ? oldSelectedData.object !== data.object
             : oldSelectedData !== data;
 
-        if (selectionChanged && this.onSelect) {
+        if (selectionChanged) {
-            this.onSelect(data && data.entity);
+            setSelectedEntity(data && data.entity);
         }
     }
 
@@ -282,7 +279,7 @@ export class Renderer {
         const pointerPos = this.pointerPosToDeviceCoords(e);
 
         if (this.selectedData && this.selectedData.manipulating) {
-            if (e.button === 0) {
+            if (e.buttons === 1) {
                 // User is dragging a selected entity.
                 const data = this.selectedData;
 
@@ -302,27 +299,23 @@ export class Renderer {
                         const yDelta = y - data.entity.position.y;
                         data.dragY += yDelta;
                         data.dragAdjust.y -= yDelta;
-                        data.entity.position = new Vec3(
+                        setPositionAndSectionOnVisibleQuestEntity(data.entity, new Vec3(
                             data.entity.position.x,
                             y,
                             data.entity.position.z
-                        );
+                        ));
                     }
                 } else {
                     // Horizontal movement accross terrain.
                     // Cast ray adjusted for dragging entities.
-                    const { intersection: terrain, section } = this.pickTerrain(pointerPos, data);
+                    const { intersection, section } = this.pickTerrain(pointerPos, data);
 
-                    if (terrain) {
+                    if (intersection) {
-                        data.entity.position = new Vec3(
+                        setPositionAndSectionOnVisibleQuestEntity(data.entity, new Vec3(
-                            terrain.point.x,
+                            intersection.point.x,
-                            terrain.point.y + data.dragY,
+                            intersection.point.y + data.dragY,
-                            terrain.point.z
+                            intersection.point.z
-                        );
+                        ), section);
-
-                        if (section) {
-                            data.entity.section = section;
-                        }
                     } else {
                         // If the cursor is not over any terrain, we translate the entity accross the horizontal plane in which the entity's origin lies.
                         this.raycaster.setFromCamera(pointerPos, this.camera);
@@ -334,11 +327,11 @@ export class Renderer {
                         const intersectionPoint = new Vector3();
 
                         if (ray.intersectPlane(plane, intersectionPoint)) {
-                            data.entity.position = new Vec3(
+                            setPositionAndSectionOnVisibleQuestEntity(data.entity, new Vec3(
                                 intersectionPoint.x + data.grabOffset.x,
                                 data.entity.position.y,
                                 intersectionPoint.z + data.grabOffset.z
-                            );
+                            ));
                         }
                     }
                 }
@@ -423,9 +416,9 @@ export class Renderer {
         return {
             object: intersection.object as Mesh,
             entity,
-            grabOffset: grabOffset,
+            grabOffset,
-            dragAdjust: dragAdjust,
+            dragAdjust,
-            dragY: dragY,
+            dragY,
             manipulating: false
         };
     }

src/rendering/entities.test.ts

@@ -1,53 +1,39 @@
-import {
+import { CylinderBufferGeometry, MeshLambertMaterial, Object3D, Vector3 } from 'three';
-    createObjectMesh,
+import { DatNpc, DatObject } from '../data/parsing/dat';
-    createNpcMesh,
+import { NpcType, ObjectType, QuestNpc, QuestObject, Vec3 } from '../domain';
-    OBJECT_COLOR,
+import { createNpcMesh, createObjectMesh, NPC_COLOR, OBJECT_COLOR } from './entities';
-    NPC_COLOR
-} from './entities';
-import { Object3D, Vector3, MeshLambertMaterial, CylinderBufferGeometry } from 'three';
-import { Vec3, QuestNpc, QuestObject, Section, NpcType, ObjectType } from '../domain';
-import { DatObject, DatNpc } from '../data/parsing/dat';
 
 const cylinder = new CylinderBufferGeometry(3, 3, 20).translate(0, 10, 0);
 
 test('create geometry for quest objects', () => {
     const object = new QuestObject(7, 13, new Vec3(17, 19, 23), new Vec3(), ObjectType.PrincipalWarp, {} as DatObject);
-    const sectRot = 0.6;
+    const geometry = createObjectMesh(object, cylinder);
-    const sectRotSin = Math.sin(sectRot);
-    const sectRotCos = Math.cos(sectRot);
-    const geometry = createObjectMesh(
-        object, [new Section(13, new Vec3(29, 31, 37), sectRot)], cylinder);
 
     expect(geometry).toBeInstanceOf(Object3D);
     expect(geometry.name).toBe('Object');
     expect(geometry.userData.entity).toBe(object);
-    expect(geometry.position.x).toBe(sectRotCos * 17 + sectRotSin * 23 + 29);
+    expect(geometry.position.x).toBe(17);
-    expect(geometry.position.y).toBe(19 + 31);
+    expect(geometry.position.y).toBe(19);
-    expect(geometry.position.z).toBe(-sectRotSin * 17 + sectRotCos * 23 + 37);
+    expect(geometry.position.z).toBe(23);
     expect((geometry.material as MeshLambertMaterial).color.getHex()).toBe(OBJECT_COLOR);
 });
 
 test('create geometry for quest NPCs', () => {
     const npc = new QuestNpc(7, 13, new Vec3(17, 19, 23), new Vec3(), NpcType.Booma, {} as DatNpc);
-    const sectRot = 0.6;
+    const geometry = createNpcMesh(npc, cylinder);
-    const sectRotSin = Math.sin(sectRot);
-    const sectRotCos = Math.cos(sectRot);
-    const geometry = createNpcMesh(
-        npc, [new Section(13, new Vec3(29, 31, 37), sectRot)], cylinder);
 
     expect(geometry).toBeInstanceOf(Object3D);
     expect(geometry.name).toBe('NPC');
     expect(geometry.userData.entity).toBe(npc);
-    expect(geometry.position.x).toBe(sectRotCos * 17 + sectRotSin * 23 + 29);
+    expect(geometry.position.x).toBe(17);
-    expect(geometry.position.y).toBe(19 + 31);
+    expect(geometry.position.y).toBe(19);
-    expect(geometry.position.z).toBe(-sectRotSin * 17 + sectRotCos * 23 + 37);
+    expect(geometry.position.z).toBe(23);
     expect((geometry.material as MeshLambertMaterial).color.getHex()).toBe(NPC_COLOR);
 });
 
 test('geometry position changes when entity position changes element-wise', () => {
     const npc = new QuestNpc(7, 13, new Vec3(17, 19, 23), new Vec3(), NpcType.Booma, {} as DatNpc);
-    const geometry = createNpcMesh(
+    const geometry = createNpcMesh(npc, cylinder);
-        npc, [new Section(13, new Vec3(0, 0, 0), 0)], cylinder);
     npc.position = new Vec3(2, 3, 5).add(npc.position);
 
     expect(geometry.position).toEqual(new Vector3(19, 22, 28));
@@ -55,8 +41,7 @@ test('geometry position changes when entity position changes element-wise', () =
 
 test('geometry position changes when entire entity position changes', () => {
     const npc = new QuestNpc(7, 13, new Vec3(17, 19, 23), new Vec3(), NpcType.Booma, {} as DatNpc);
-    const geometry = createNpcMesh(
+    const geometry = createNpcMesh(npc, cylinder);
-        npc, [new Section(13, new Vec3(0, 0, 0), 0)], cylinder);
     npc.position = new Vec3(2, 3, 5);
 
     expect(geometry.position).toEqual(new Vector3(2, 3, 5));

src/rendering/entities.ts

@@ -1,6 +1,6 @@
-import { BufferGeometry, DoubleSide, Mesh, MeshLambertMaterial } from 'three';
 import { autorun } from 'mobx';
-import { Vec3, VisibleQuestEntity, QuestNpc, QuestObject, Section } from '../domain';
+import { BufferGeometry, DoubleSide, Mesh, MeshLambertMaterial } from 'three';
+import { QuestNpc, QuestObject, VisibleQuestEntity } from '../domain';
 
 export const OBJECT_COLOR = 0xFFFF00;
 export const OBJECT_HOVER_COLOR = 0xFFDF3F;
@@ -9,37 +9,20 @@ export const NPC_COLOR = 0xFF0000;
 export const NPC_HOVER_COLOR = 0xFF3F5F;
 export const NPC_SELECTED_COLOR = 0xFF0054;
 
-export function createObjectMesh(object: QuestObject, sections: Section[], geometry: BufferGeometry): Mesh {
+export function createObjectMesh(object: QuestObject, geometry: BufferGeometry): Mesh {
-    return createMesh(object, sections, geometry, OBJECT_COLOR, 'Object');
+    return createMesh(object, geometry, OBJECT_COLOR, 'Object');
 }
 
-export function createNpcMesh(npc: QuestNpc, sections: Section[], geometry: BufferGeometry): Mesh {
+export function createNpcMesh(npc: QuestNpc, geometry: BufferGeometry): Mesh {
-    return createMesh(npc, sections, geometry, NPC_COLOR, 'NPC');
+    return createMesh(npc, geometry, NPC_COLOR, 'NPC');
 }
 
 function createMesh(
     entity: VisibleQuestEntity,
-    sections: Section[],
     geometry: BufferGeometry,
     color: number,
     type: string
 ): Mesh {
-    let {x, y, z} = entity.position;
-
-    const section = sections.find(s => s.id === entity.sectionId);
-    entity.section = section;
-
-    if (section) {
-        const {x: secX, y: secY, z: secZ} = section.position;
-        const rotX = section.cosYAxisRotation * x + section.sinYAxisRotation * z;
-        const rotZ = -section.sinYAxisRotation * x + section.cosYAxisRotation * z;
-        x = rotX + secX;
-        y += secY;
-        z = rotZ + secZ;
-    } else {
-        console.warn(`Section ${entity.sectionId} not found.`);
-    }
-
     const object3d = new Mesh(
         geometry,
         new MeshLambertMaterial({
@@ -52,13 +35,11 @@ function createMesh(
 
     // TODO: dispose autorun?
     autorun(() => {
-        const {x, y, z} = entity.position;
+        const { x, y, z } = entity.position;
         object3d.position.set(x, y, z);
         const rot = entity.rotation;
         object3d.rotation.set(rot.x, rot.y, rot.z);
     });
 
-    entity.position = new Vec3(x, y, z);
-
     return object3d;
 }

src/stores/AppStateStore.ts

@@ -0,0 +1,12 @@
+import { observable } from 'mobx';
+import { Object3D } from 'three';
+import { Area, Quest, VisibleQuestEntity } from '../domain';
+
+class AppStateStore {
+    @observable currentModel?: Object3D;
+    @observable currentQuest?: Quest;
+    @observable currentArea?: Area;
+    @observable selectedEntity?: VisibleQuestEntity;
+}
+
+export const appStateStore = new AppStateStore();

src/stores/AreaStore.ts

@@ -1,6 +1,4 @@
-import { observable } from 'mobx';
+import { Area, AreaVariant } from '../domain';
-import { Object3D } from 'three';
-import { Area, AreaVariant, Quest, VisibleQuestEntity } from './domain';
 
 function area(id: number, name: string, order: number, variants: number) {
     const area = new Area(id, name, order, []);
@@ -86,12 +84,3 @@ class AreaStore {
 }
 
 export const areaStore = new AreaStore();
-
-class ApplicationState {
-    @observable currentModel?: Object3D;
-    @observable currentQuest?: Quest;
-    @observable currentArea?: Area;
-    @observable selectedEntity?: VisibleQuestEntity;
-}
-
-export const applicationState = new ApplicationState();

src/ui/ApplicationComponent.tsx

@@ -1,31 +1,32 @@
-import React, { ChangeEvent, KeyboardEvent } from 'react';
-import { observer } from 'mobx-react';
 import { Button, Dialog, Intent } from '@blueprintjs/core';
-import { applicationState } from '../store';
+import { observer } from 'mobx-react';
-import { currentAreaIdChanged, loadFile, saveCurrentQuestToFile } from '../actions';
+import React, { ChangeEvent, KeyboardEvent } from 'react';
-import { Area3DComponent } from './Area3DComponent';
+import { saveCurrentQuestToFile, setCurrentAreaId } from '../actions/appState';
+import { loadFile } from '../actions/loadFile';
+import { appStateStore } from '../stores/AppStateStore';
+import './ApplicationComponent.css';
+import { RendererComponent } from './RendererComponent';
 import { EntityInfoComponent } from './EntityInfoComponent';
 import { QuestInfoComponent } from './QuestInfoComponent';
-import './ApplicationComponent.css';
 
 @observer
 export class ApplicationComponent extends React.Component<{}, {
     filename?: string,
-    save_dialog_open: boolean,
+    saveDialogOpen: boolean,
-    save_dialog_filename: string
+    saveDialogFilename: string
 }> {
     state = {
         filename: undefined,
-        save_dialog_open: false,
+        saveDialogOpen: false,
-        save_dialog_filename: 'Untitled'
+        saveDialogFilename: 'Untitled',
     };
 
     render() {
-        const quest = applicationState.currentQuest;
+        const quest = appStateStore.currentQuest;
-        const model = applicationState.currentModel;
+        const model = appStateStore.currentModel;
         const areas = quest ? Array.from(quest.areaVariants).map(a => a.area) : undefined;
-        const area = applicationState.currentArea;
+        const area = appStateStore.currentArea;
-        const area_id = area ? String(area.id) : undefined;
+        const areaId = area ? String(area.id) : undefined;
 
         return (
             <div className="ApplicationComponent bp3-app bp3-dark">
@@ -39,7 +40,7 @@ export class ApplicationComponent extends React.Component<{}, {
                             <input
                                 type="file"
                                 accept=".nj, .qst, .xj"
-                                onChange={this._on_file_change} />
+                                onChange={this.onFileChange} />
                             <span className="bp3-file-upload-input">
                                 <span className="ApplicationComponent-file-upload">
                                     {this.state.filename || 'Choose file...'}
@@ -50,8 +51,8 @@ export class ApplicationComponent extends React.Component<{}, {
                             ? (
                                 <div className="bp3-select" style={{ marginLeft: 10 }}>
                                     <select
-                                        onChange={this._on_area_select_change}
+                                        onChange={this.onAreaSelectChange}
-                                        defaultValue={area_id}>
+                                        defaultValue={areaId}>
                                         {areas.map(area =>
                                             <option key={area.id} value={area.id}>{area.name}</option>)}
                                     </select>
@@ -62,26 +63,26 @@ export class ApplicationComponent extends React.Component<{}, {
                                 text="Save as..."
                                 icon="floppy-disk"
                                 style={{ marginLeft: 10 }}
-                                onClick={this._on_save_as_click} />
+                                onClick={this.onSaveAsClick} />
                             : null}
                     </div>
                 </nav>
                 <div className="ApplicationComponent-main">
                     <QuestInfoComponent
                         quest={quest} />
-                    <Area3DComponent
+                    <RendererComponent
                         quest={quest}
                         area={area}
                         model={model} />
-                    <EntityInfoComponent entity={applicationState.selectedEntity} />
+                    <EntityInfoComponent entity={appStateStore.selectedEntity} />
                 </div>
                 <Dialog
                     title="Save as..."
                     icon="floppy-disk"
                     className="bp3-dark"
                     style={{ width: 360 }}
-                    isOpen={this.state.save_dialog_open}
+                    isOpen={this.state.saveDialogOpen}
-                    onClose={this._on_save_dialog_close}>
+                    onClose={this.onSaveDialogClose}>
                     <div className="bp3-dialog-body">
                         <label className="bp3-label bp3-inline">
                             Name:
@@ -89,9 +90,11 @@ export class ApplicationComponent extends React.Component<{}, {
                                 autoFocus={true}
                                 className="bp3-input"
                                 style={{ width: 200, margin: '0 10px 0 10px' }}
-                                value={this.state.save_dialog_filename}
+                                value={this.state.saveDialogFilename}
-                                onChange={this._on_save_dialog_name_change}
+                                maxLength={12}
-                                onKeyUp={this._on_save_dialog_name_key_up} />
+                                onChange={this.onSaveDialogNameChange}
+                                onKeyUp={this.onSaveDialogNameKeyUp}
+                            />
                             (.qst)
                         </label>
                     </div>
@@ -100,7 +103,7 @@ export class ApplicationComponent extends React.Component<{}, {
                             <Button
                                 text="Save"
                                 style={{ marginLeft: 10 }}
-                                onClick={this._on_save_dialog_save_click}
+                                onClick={this.onSaveDialogSaveClick}
                                 intent={Intent.PRIMARY} />
                         </div>
                     </div>
@@ -109,7 +112,7 @@ export class ApplicationComponent extends React.Component<{}, {
         );
     }
 
-    private _on_file_change = (e: ChangeEvent<HTMLInputElement>) => {
+    private onFileChange = (e: ChangeEvent<HTMLInputElement>) => {
         if (e.currentTarget.files) {
             const file = e.currentTarget.files[0];
 
@@ -122,37 +125,37 @@ export class ApplicationComponent extends React.Component<{}, {
         }
     }
 
-    private _on_area_select_change = (e: ChangeEvent<HTMLSelectElement>) => {
+    private onAreaSelectChange = (e: ChangeEvent<HTMLSelectElement>) => {
-        const area_id = parseInt(e.currentTarget.value, 10);
+        const areaId = parseInt(e.currentTarget.value, 10);
-        currentAreaIdChanged(area_id);
+        setCurrentAreaId(areaId);
     }
 
-    private _on_save_as_click = () => {
+    private onSaveAsClick = () => {
         let name = this.state.filename || 'Untitled';
         name = name.endsWith('.qst') ? name.slice(0, -4) : name;
 
         this.setState({
-            save_dialog_open: true,
+            saveDialogOpen: true,
-            save_dialog_filename: name
+            saveDialogFilename: name
         });
     }
 
-    private _on_save_dialog_name_change = (e: ChangeEvent<HTMLInputElement>) => {
+    private onSaveDialogNameChange = (e: ChangeEvent<HTMLInputElement>) => {
-        this.setState({ save_dialog_filename: e.currentTarget.value });
+        this.setState({ saveDialogFilename: e.currentTarget.value });
     }
 
-    private _on_save_dialog_name_key_up = (e: KeyboardEvent<HTMLInputElement>) => {
+    private onSaveDialogNameKeyUp = (e: KeyboardEvent<HTMLInputElement>) => {
         if (e.key === 'Enter') {
-            this._on_save_dialog_save_click();
+            this.onSaveDialogSaveClick();
         }
     }
 
-    private _on_save_dialog_save_click = () => {
+    private onSaveDialogSaveClick = () => {
-        saveCurrentQuestToFile(this.state.save_dialog_filename);
+        saveCurrentQuestToFile(this.state.saveDialogFilename);
-        this.setState({ save_dialog_open: false });
+        this.setState({ saveDialogOpen: false });
     }
 
-    private _on_save_dialog_close = () => {
+    private onSaveDialogClose = () => {
-        this.setState({ save_dialog_open: false });
+        this.setState({ saveDialogOpen: false });
     }
 }

src/ui/RendererComponent.tsx

@@ -1,8 +1,7 @@
 import React from 'react';
 import { Object3D } from 'three';
-import { entitySelected } from '../actions';
+import { Area, Quest } from '../domain';
 import { Renderer } from '../rendering/Renderer';
-import { Area, Quest, VisibleQuestEntity } from '../domain';
 
 interface Props {
     quest?: Quest;
@@ -10,17 +9,8 @@ interface Props {
     model?: Object3D;
 }
 
-export class Area3DComponent extends React.Component<Props> {
+export class RendererComponent extends React.Component<Props> {
-    private renderer: Renderer;
+    private renderer = new Renderer();
-
-    constructor(props: Props) {
-        super(props);
-
-        // renderer has to be assigned here so that it happens after onSelect is assigned.
-        this.renderer = new Renderer({
-            onSelect: this.onSelect
-        });
-    }
 
     render() {
         return <div style={{ overflow: 'hidden' }} ref={this.modifyDom} />;
@@ -51,10 +41,6 @@ export class Area3DComponent extends React.Component<Props> {
         div.appendChild(this.renderer.domElement);
     }
 
-    private onSelect = (entity?: VisibleQuestEntity) => {
-        entitySelected(entity);
-    }
-
     private onResize = () => {
         const wrapperDiv = this.renderer.domElement.parentNode as HTMLDivElement;
         this.renderer.setSize(wrapperDiv.clientWidth, wrapperDiv.clientHeight);