[oden][game] Multiple screens, logging, pre/post, bluescreen

Better blue screens and also logging and whatnot

game/actor.ts

@@ -2,7 +2,8 @@ import { load_texture } from "./assets";
 import { btn, Button } from "./input";
 import { Vec2, new_v2, vadd, vsub, vnorm, vmul } from "./vector";
 import { color, stroke, circle, spr, use_texture, Texture } from "./graphics";
-import { has_collision, Level } from "./level";
+import { has_collision, Level, World } from "./level";
+import { log } from "./log";
 
 export interface ActorProps {
   id: string;
@@ -50,7 +51,15 @@ export class Actor {
     this.props = props;
   }
 
-  update() {}
+  pre_update(_world: World) {}
+
+  post_update(_world: World) {}
+
+  update(world: World) {
+    this.pre_update(world);
+    this.update_physics(world.current_level);
+    this.post_update(world);
+  }
 
   // IDEAS: Make gameplay logic at 30fps and render updates at 60fps? Does
   //        this mean we do some "update" in render?
@@ -159,7 +168,7 @@ export class Robo extends Actor {
     });
   }
 
-  update() {
+  pre_update() {
     // Acceleration from input
     let a = new_v2(0);
     if (btn(Button.Up)) {
@@ -178,6 +187,50 @@ export class Robo extends Actor {
     this.props.velocity = vadd(this.props.velocity, vmul(a, 0.07));
   }
 
+  post_update(world: World) {
+    const level = world.current_level;
+    const props = this.props;
+    const w = level.cw - 1;
+    const h = level.ch - 1;
+
+    log("robo position", "cx", props.cx, "cy", props.cy, "w", w, "h", h);
+    let next_level = null;
+    if (props.cx > w || (props.cx == w && props.xr > 0.8)) {
+      const iid = level.neighbors.e;
+      next_level = iid && world.level_map.get(iid);
+      if (next_level) {
+        props.cx = 0;
+        props.xr = 0.2;
+      }
+    } else if (props.cy > h || (props.cy == h && props.yr > 0.8)) {
+      const iid = level.neighbors.s;
+      next_level = iid && world.level_map.get(iid);
+      if (next_level) {
+        props.cy = 0;
+        props.yr = 0.2;
+      }
+    } else if (props.cx < 0 || (props.cx == 0 && props.xr < 0.2)) {
+      const iid = level.neighbors.w;
+      next_level = iid && world.level_map.get(iid);
+      if (next_level) {
+        props.cx = next_level.cw - 1;
+        props.xr = 0.8;
+      }
+    } else if (props.cy < 0 || (props.cy == 0 && props.yr < 0.2)) {
+      const iid = level.neighbors.n;
+      next_level = iid && world.level_map.get(iid);
+      if (next_level) {
+        props.cy = next_level.ch - 1;
+        props.yr = 0.8;
+      }
+    }
+
+    if (next_level) {
+      log("vwoop", next_level.iid);
+      world.current_level = next_level; // Yikes.
+    }
+  }
+
   draw(clock: number) {
     if (this.bot_sprite != undefined) {
       use_texture(this.bot_sprite);

game/level.ts

@@ -2,8 +2,9 @@
 //       javascript. Dealing with the level code is really nice in javascript
 //       but there's a bunch of weird stuff that really feels lower level.
 import { load_texture } from "./assets";
-import { Texture, print, spr, use_texture } from "./graphics";
+import { Texture, spr, use_texture } from "./graphics";
 import { load_string } from "./io";
+import { log } from "./log";
 
 // TODO: Use io-ts? YIKES.
 
@@ -43,6 +44,7 @@ export interface EntityLayer {
 }
 
 export interface Level {
+  iid: string;
   world_x: number;
   world_y: number;
   width: number;
@@ -52,11 +54,19 @@ export interface Level {
   tile_layers: TileLayer[];
   entities: Entity[];
   values: { [key: string]: number[] };
+  neighbors: {
+    n: string | null;
+    s: string | null;
+    e: string | null;
+    w: string | null;
+  };
 }
 
 export interface World {
   levels: Level[];
+  level_map: Map<string, Level>;
   tilesets: Map<number, TileSet>;
+  current_level: Level;
 }
 
 interface LDTKTilesetDef {
@@ -78,7 +88,15 @@ async function load_tileset(def: LDTKTilesetDef): Promise<TileSet> {
     tags.set(et.enumValueId, et.tileIds);
   }
 
-  print("Loaded tileset", def.uid, "from", relPath, "as ID", texture.id());
+  log(
+    "map_load",
+    "Loaded tileset",
+    def.uid,
+    "from",
+    relPath,
+    "as ID",
+    texture.id()
+  );
   return { id: def.uid, texture, tags };
 }
 
@@ -179,15 +197,18 @@ function is_intgrid_layer_instance(
 }
 
 type LDTKLevel = {
+  iid: string;
   worldX: number;
   worldY: number;
   pxWid: number;
   pxHei: number;
   layerInstances: LDTKLayerInstance[];
+  __neighbours: { levelIid: string; dir: "n" | "s" | "e" | "w" }[];
 };
 
 function load_level(tile_sets: Map<number, TileSet>, def: LDTKLevel): Level {
   const result: Level = {
+    iid: def.iid,
     world_x: def.worldX,
     world_y: def.worldY,
     width: def.pxWid,
@@ -197,6 +218,7 @@ function load_level(tile_sets: Map<number, TileSet>, def: LDTKLevel): Level {
     tile_layers: [],
     entities: [],
     values: {},
+    neighbors: { n: null, s: null, e: null, w: null },
   };
 
   for (const li of def.layerInstances) {
@@ -220,6 +242,18 @@ function load_level(tile_sets: Map<number, TileSet>, def: LDTKLevel): Level {
   }
 
   result.tile_layers = result.tile_layers.reverse();
+  const neighbors = result.neighbors;
+  for (const n of def.__neighbours) {
+    if (n.dir == "n") {
+      neighbors.n = n.levelIid;
+    } else if (n.dir == "s") {
+      neighbors.s = n.levelIid;
+    } else if (n.dir == "e") {
+      neighbors.e = n.levelIid;
+    } else if (n.dir == "w") {
+      neighbors.w = n.levelIid;
+    }
+  }
   return result;
 }
 
@@ -255,7 +289,7 @@ function is_ldtk_map(map: unknown): map is LDTKMap {
 }
 
 export async function load_world(path: string): Promise<World> {
-  print("Loading map:", path);
+  log("map_load", "Loading map:", path);
   const blob = await load_string(path);
   const map = JSON.parse(blob);
 
@@ -274,7 +308,17 @@ export async function load_world(path: string): Promise<World> {
   }
 
   const levels = map.levels.map((l: any) => load_level(tilesets, l));
-  return { levels, tilesets };
+  const level_map = new Map();
+  for (const level of levels) {
+    level_map.set(level.iid, level);
+  }
+
+  const current_level = levels.find((l) => l.world_x == 0 && l.world_y == 0);
+  if (!current_level) {
+    throw new Error("UNABLE TO FIND LEVEL AT 0,0: CANNOT START");
+  }
+
+  return { levels, level_map, tilesets, current_level };
 }
 
 export function has_collision(level: Level, cx: number, cy: number): boolean {

game/log.ts

@@ -1,17 +1,35 @@
 import { color, print } from "./graphics";
 
-const lines: string[] = [];
+interface LogEntry {
+  frame_age: number;
+  line: string;
+}
 
-export function log(...args: unknown[]) {
-  // const line = args.join(" ");
-  lines.push(args.join(" "));
+const lines: Map<string, LogEntry> = new Map();
+
+export function log(key: string, ...args: unknown[]) {
+  const entry = {
+    frame_age: 60,
+    line: key + " " + args.join(" "),
+  };
+  lines.set(key, entry);
 }
 
 export function draw_log() {
   color(1, 1, 1, 1);
   let line_y = 3;
-  for (const line of lines) {
-    print(3, line_y, line);
+
+  const keys = [...lines.keys()].sort();
+  for (const key of keys) {
+    const entry = lines.get(key);
+    if (entry) {
+      // Life is too short for me to convince typescript.
+      print(3, line_y, entry.line);
       line_y += 8;
+      entry.frame_age -= 1;
+      if (entry.frame_age <= 0) {
+        lines.delete(key);
+      }
+    }
   }
 }

game/main.ts

@@ -1,7 +1,7 @@
 import { cls, get_dimensions, scale } from "./graphics";
 import { since_start } from "./time";
 import { new_v2 } from "./vector";
-import { load_world, World, Level, draw_level } from "./level";
+import { load_world, World, draw_level } from "./level";
 import {
   Actor,
   ActorProps,
@@ -16,7 +16,6 @@ import { log, draw_log } from "./log";
 let clock = 0;
 
 let world: World | undefined = undefined;
-let level: Level | undefined = undefined;
 let actors: Actor[] = [];
 
 // Note zelda overworld is 16x8 screens
@@ -26,14 +25,11 @@ let actors: Actor[] = [];
 function start_load_assets() {
   // Start this load, but then...
   load_world("./overworld.ldtk").then((w) => {
-    log("World loaded at", since_start());
+    log("world loaded at", since_start());
     world = w;
 
     // Assume we start at 0,0
-    level = world.levels.find((l) => l.world_x == 0 && l.world_y == 0);
-    if (!level) {
-      throw new Error("UNABLE TO FIND LEVEL AT 0,0: CANNOT START");
-    }
+    const level = world.current_level;
 
     // TODO: SPAWN ACTORS BASED ON LEVEL.
     actors.length = 0;
@@ -63,7 +59,7 @@ interface Snapshot {
 }
 
 export function suspend(): Snapshot {
-  log("Suspend! ", actors.length, "actors");
+  log("suspend_status", "Suspend ", actors.length, "actors");
   return {
     clock,
     actors: actors.map((a) => {
@@ -76,23 +72,19 @@ export function resume(snapshot: Snapshot | undefined) {
   if (snapshot) {
     clock = snapshot.clock || 0;
     actors = snapshot.actors.map((s) => spawn_actor(s.type, s.props));
-    log("Resume! ", actors.length, "actors");
+    log("resume_status", "Resume ", actors.length, "actors");
   }
 }
 
 export function update() {
-  if (!level) {
+  if (!world) {
     return;
   }
 
   clock = (clock + 1) % 20160;
 
   for (const actor of actors) {
-    actor.update();
-  }
-
-  for (const actor of actors) {
-    actor.update_physics(level);
+    actor.update(world);
   }
 
   // TODO: Bonks
@@ -109,8 +101,8 @@ export function draw() {
   );
   scale(s);
 
-  if (level != undefined) {
-    draw_level(level, 0, 0);
+  if (world != undefined) {
+    draw_level(world.current_level, 0, 0);
   }
 
   for (const actor of actors) {

src/script.rs

@@ -1,7 +1,7 @@
 use notify::{RecommendedWatcher, RecursiveMode, Watcher};
 use oden_js::{
     module::loader::{ModuleLoader, ModuleSource},
-    Context, ContextRef, Result, Runtime, Value,
+    Context, ContextRef, RejectedPromiseTracker, Result, Runtime, Value,
 };
 use std::ffi::OsStr;
 use std::sync::mpsc::{channel, Receiver, Sender};
@@ -53,6 +53,39 @@ impl ModuleLoader for Loader {
     }
 }
 
+struct RejectedPromiseHandler {
+    error_lines: Sender<String>,
+}
+
+impl RejectedPromiseTracker for RejectedPromiseHandler {
+    fn on_rejected_promise(
+        &self,
+        ctx: &ContextRef,
+        _promise: &oden_js::ValueRef,
+        reason: &oden_js::ValueRef,
+        is_handled: bool,
+    ) {
+        if !is_handled {
+            let reason_str = reason.to_string(ctx).expect(
+                "Unhandled rejected promise: reason unknown: unable to convert reason to string",
+            );
+
+            let reason_str = format!("Unhandled rejected promise:\n{reason_str}");
+            for line in reason_str.lines().map(|l| l.to_owned()) {
+                let _ = self.error_lines.send(line);
+            }
+
+            let stack = reason
+                .get_property(ctx, "stack")
+                .and_then(|stack| stack.to_string(ctx))
+                .unwrap_or_else(|_| String::new());
+            for line in stack.lines().map(|l| l.to_owned()) {
+                let _ = self.error_lines.send(line);
+            }
+        }
+    }
+}
+
 pub struct ScriptContext {
     context: Context,
     update: Value,
@@ -68,12 +101,18 @@ pub struct ScriptContext {
     input: input::InputAPI,
 
     error_lines: Vec<String>,
+    promise_error_reciever: Receiver<String>,
 }
 
 impl ScriptContext {
     pub fn new(suspend_state: Option<Vec<u8>>, reload_trigger: Sender<()>) -> Result<Self> {
+        let (promise_error_send, promise_error_recv) = channel();
+
         let mut runtime = Runtime::new();
         runtime.set_module_loader(Loader::new(reload_trigger));
+        runtime.set_rejected_promise_tracker(RejectedPromiseHandler {
+            error_lines: promise_error_send,
+        });
 
         let mut context = Context::new(runtime);
         context.add_intrinsic_bigfloat();
@@ -119,6 +158,7 @@ impl ScriptContext {
             input,
 
             error_lines: Vec::new(),
+            promise_error_reciever: promise_error_recv,
         })
     }
 
@@ -172,6 +212,11 @@ impl ScriptContext {
         {
             let _span = span!("process jobs");
             self.handle_result(self.context.process_all_jobs());
+
+            // Check to make sure we don't have any rejected promises.
+            while let Ok(line) = self.promise_error_reciever.try_recv() {
+                self.error_lines.push(line);
+            }
         }
 
         // Now run the update function.
@@ -197,9 +242,10 @@ impl ScriptContext {
                 GraphicsCommand::Clear(ClearCommand {
                     color: [0.0, 0.0, 1.0, 1.0],
                 }),
+                GraphicsCommand::Scale([4.0, 4.0]),
                 GraphicsCommand::Print(PrintCommand {
                     text: "FATAL SCRIPT ERROR".to_owned(),
-                    pos: [6.0, 6.0],
+                    pos: [8.0, 8.0],
                 }),
             ];