feat: finished RandomMapGenerator, not fully tested

dist/shattered_sword_assets/jsons/forest_template.json

@@ -54,12 +54,6 @@
       33, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 35,
       41, 42, 42, 42, 34, 34, 34, 34, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 43],
       "entrances": [
-         {
-            "x": 0,
-            "y": 12,
-            "width": 3,
-            "alt_tile": [52, 54]
-         },
          {
             "x": 29,
             "y": 12,
@@ -117,12 +111,6 @@
             "y": 11,
             "width": 3,
             "alt_tile": [52, 54]
-         },
-         {
-            "x": 29,
-            "y": 9,
-            "width": 3,
-            "alt_tile": [52, 54]
          }
       ]
    },

src/shattered_sword/Scenes/Tutorial.ts

@@ -1,3 +1,4 @@
+import { TiledTilemapData } from "../../Wolfie2D/DataTypes/Tilesets/TiledData";
 import Vec2 from "../../Wolfie2D/DataTypes/Vec2";
 import Debug from "../../Wolfie2D/Debug/Debug";
 import { GameEventType } from "../../Wolfie2D/Events/GameEventType";
@@ -7,14 +8,14 @@ import GameLevel from "./GameLevel";
 
 
 export default class Tutorial extends GameLevel{
-
+    private map: TiledTilemapData;
     loadScene(): void {
         // Load resources
         // this.load.tilemap("forest1", "shattered_sword_assets/tilemaps/Tutorial.json");
         // let map = localStorage.getItem("map");
         let rmg = new RandomMapGenerator("shattered_sword_assets/jsons/forest_template.json", 114514);
-        let map = rmg.getMap();
+        this.map = rmg.getMap();
-        this.load.tilemapFromObject("forest1", map);
+        this.load.tilemapFromObject("forest1", this.map);
         
         this.load.spritesheet("player", "shattered_sword_assets/spritesheets/Hiro.json")
         //load music here
@@ -23,7 +24,7 @@ export default class Tutorial extends GameLevel{
     startScene(): void {
         // Add the level 1 tilemap
         this.add.tilemap("forest1", new Vec2(2, 2));
-        this.viewport.setBounds(0, 0, 64*32, 20*32);
+        this.viewport.setBounds(0, 0, this.map.width*32, this.map.height*32);
 
         this.playerSpawn = new Vec2(5*32, 9*32);
 

src/shattered_sword/Tools/RandomMapGenerator.ts

@@ -21,6 +21,8 @@ export default class RandomMapGenerator {
     private gen: any;
     private hasExit: boolean;
     private minRoom: number;
+    private roomPlaced: number;
+    private exitFacing: Facing;
 
     constructor(JSONFilePath: string, seed: any) {
         let xhr = new XMLHttpRequest();
@@ -42,6 +44,8 @@ export default class RandomMapGenerator {
         this.gen = new gen(seed);
         this.hasExit = false;
         this.minRoom = this.template.minroom;
+        this.roomPlaced = 0;
+        this.exitFacing = this.getEntranceFacing(this.template.exit.entrances[0], this.template.exit.width);
 
 
         this.template.rooms.forEach((room) => {
@@ -88,18 +92,106 @@ export default class RandomMapGenerator {
         let room = this.copyRoom(this.template.entrance, 0, 0);
         this.rooms.push(room);
 
+        let facing = this.getEntranceFacing(this.template.entrance.entrances[0], this.template.entrance.width);
+        let position = new Vec2(this.template.entrance.entrances[0].x, this.template.entrance.entrances[0].y);
+
+        this.putNextRoom(position, this.getOppositeFacing(facing));
+
+        if (!this.hasExit)
+            throw new Error("Fail to generate a map with exit!");
 
-        // if (!this.hasExit) 
-        //     throw new Error("Fail to generate a map with exit!");
         this.fillData();
         return this.map;
     }
 
-    private putNextRoom(): boolean {
+    private putNextRoom(position: Vec2, facing: Facing): boolean {
+        switch (facing) {
+            case Facing.LEFT:
+                position.x += 1;
+                break;
+            case Facing.RIGHT:
+                position.x -= 1;
+                break;
+            case Facing.UP:
+                position.y += 1;
+                break;
+            case Facing.DOWN:
+                position.y -= 1;
+                break;
+            default:
+                break;
+        }
+        if (this.roomPlaced >= this.minRoom && facing == this.exitFacing) {
+            this.putExitRoom(position);
+            return true;
+        }
 
+        let nextRoom = this.getRandomRoom(facing);
+        let nextPosition: Vec2 = undefined;
+        let thisEntrance: Entrance = undefined;
+        for (let index = 0; index < nextRoom.entrances.length; index++) {
+            const entrance = nextRoom.entrances[index];
+            if (this.getEntranceFacing(entrance, nextRoom.weight) == facing) {
+                let tmpPosition = new Vec2(position.x - entrance.x, position.y - entrance.y);
+                if (this.isValidRoom(tmpPosition, new Vec2(tmpPosition.x + nextRoom.width - 1, tmpPosition.y + nextRoom.height - 1))) {
+                    thisEntrance = entrance;
+                    nextPosition = tmpPosition;
+                }
+            }
+        }
+        if (!thisEntrance) {
+            return false;
+        }
+        let room = this.copyRoom(nextRoom, nextPosition.x, nextPosition.y);
+        this.rooms.push(room);
+        this.roomPlaced += 1;
+        if (this.hasExit && this.gen.range() <= 0.1) {
+            return false;
+        }
+        for (let index = 0; index < nextRoom.entrances.length; index++) {
+            const entrance = nextRoom.entrances[index];
+            if (entrance != thisEntrance) {
+                let facing = this.getEntranceFacing(entrance, nextRoom.width);
+                let position = new Vec2(nextPosition.x + entrance.x, nextPosition.y + entrance.y);
+
+                if (this.putNextRoom(position, this.getOppositeFacing(facing))) {
+                    this.removeEntrance(room, entrance, facing);
+                }
+            }
+        }
         return true;
     }
 
+    private putExitRoom(position: Vec2): void {
+        position = new Vec2(position.x - this.template.exit.entrances[0].x, position.y - this.template.exit.entrances[0].y);
+        if (!this.isValidRoom(position, new Vec2(position.x + this.template.exit.width - 1, position.y + this.template.exit.height - 1))) {
+            throw new Error("Cannot put exit room!!! Position is invalid!!! Please check order of entrances in map template.");
+        }
+        let room = this.copyRoom(this.template.exit, position.x, position.y);
+        this.rooms.push(room);
+        this.hasExit = true;
+    }
+
+    private removeEntrance(room: Room, entrance: Entrance, facing: Facing): void {
+        let width = room.bottomRight.x - room.topLeft.x + 1;
+        if (facing == Facing.LEFT || facing == Facing.RIGHT) {
+            for (let index = 0; index < entrance.width; index++)
+                room.topLayer[(entrance.y + index) * width + entrance.x] = 0;
+            if (entrance.y > 0)
+                room.topLayer[(entrance.y - 1) * width + entrance.x] = entrance.alt_tile[0];
+            if (entrance.y + entrance.width <= (room.bottomRight.y - room.topLeft.y))
+                room.topLayer[(entrance.y + entrance.width) * width + entrance.x] = entrance.alt_tile[1];
+        }
+        else {
+            for (let index = 0; index < entrance.width; index++)
+                room.topLayer[(entrance.y) * width + entrance.x + index] = 0;
+            if (entrance.x > 0)
+                room.topLayer[(entrance.y) * width + entrance.x - 1] = entrance.alt_tile[0];
+            if (entrance.x + entrance.width <= (room.bottomRight.x - room.topLeft.x))
+                room.topLayer[(entrance.y) * width + entrance.x + entrance.width] = entrance.alt_tile[1];
+        }
+    }
+
     private fillData() {
         let width = this.maxX - this.minX + 1;
         let height = this.maxY - this.minY + 1;
@@ -144,7 +236,8 @@ export default class RandomMapGenerator {
         this.map.layers[0].data = new Array(width * height).fill(this.template.background);
         this.map.layers[1].data = new Array(width * height);
 
-        this.rooms.forEach((room) => {
+        for (let index = 0; index < this.rooms.length; index++) {
+            const room = this.rooms[index];
             let roomWidth = room.bottomRight.x - room.topLeft.x + 1;
             let roomHeight = room.bottomRight.y - room.topLeft.y + 1;
             for (let i = 0; i < roomHeight; i++)
@@ -152,18 +245,20 @@ export default class RandomMapGenerator {
                     this.map.layers[0].data[(room.topLeft.y + i) * width + room.topLeft.x + j] = room.bottomLayer[i * roomWidth + j];
                     this.map.layers[1].data[(room.topLeft.y + i) * width + room.topLeft.x + j] = room.topLayer[i * roomWidth + j];
                 }
-        })
+        }
     }
 
     private isValidRoom(topLeft: Vec2, bottomRight: Vec2): boolean {
-        this.rooms.forEach((room) => {
+        for (let index = 0; index < this.rooms.length; index++) {
-            if (room.topLeft.x < bottomRight.x &&
+            const room = this.rooms[index];
-                room.bottomRight.x > topLeft.x &&
+            if (room.topLeft.x <= bottomRight.x &&
-                room.topLeft.y < bottomRight.y &&
+                room.bottomRight.x >= topLeft.x &&
-                room.bottomRight.y > topLeft.y)
+                room.topLeft.y <= bottomRight.y &&
-                return true;
+                room.bottomRight.y >= topLeft.y)
-        })
+                return false;
-        return false;
+        }
+        console.warn("Found an invalid room! TopLeft:", topLeft.toString, "BottomRight:", bottomRight.toString);
+        return true;
     }
 
     private getEntranceFacing(entrance: Entrance, width: number): Facing {
@@ -189,18 +284,20 @@ export default class RandomMapGenerator {
         }
     }
 
-    private getRandomRoom(value: number, facing: Facing): RoomTemplate {
+    private getRandomRoom(facing: Facing): RoomTemplate {
         let array = this.getRoomArray(facing), weight = this.getRoomWeight(facing);
+        let value = this.gen(weight);
 
         if (value >= weight)
             throw new Error("Random number " + value + " is larger than total weight " + weight);
 
-        array.forEach((room) => {
+        for (let index = 0; index < array.length; index++) {
+            let room = array[index];
             if (value < room.weight)
                 return room;
             value -= room.weight;
-        })
+        }
-        throw new Error("Cannot find Room! \nRooms: " + JSON.stringify(array) + "\nValue: " + value);
+        throw new Error("Cannot find Room! \nValue: " + value + "\nRooms: " + JSON.stringify(array));
     }
 
     private getRoomArray(facing: Facing): Array<RoomTemplate> {