attempt to implement draw_enable_drawevent

src/runner.c

@@ -775,6 +775,8 @@ static void rebuildDrawableCacheIfDirty(Runner* runner) {
 }
 
 void Runner_draw(Runner* runner) {
+    if (!runner->drawAutomatic) return;
+
     Room* room = runner->currentRoom;
 
     rebuildDrawableCacheIfDirty(runner);
@@ -1019,6 +1021,8 @@ static void endGuiPass(Runner* runner) {
 }
 
 void Runner_drawGUI(Runner* runner, int32_t windowW, int32_t windowH, int32_t targetW, int32_t targetH) {
+    if (!runner->drawAutomatic) return;
+
     rebuildDrawableCacheIfDirty(runner);
     Drawable* drawables = runner->cachedDrawables;
     int32_t drawableCount = (int32_t) arrlen(drawables);
@@ -1109,7 +1113,9 @@ static void applyFreeCamera(Runner* runner, int32_t* viewX, int32_t* viewY, int3
     *viewY = (int32_t) (centerY - zoomedH * 0.5f);
 }
 
+
 void Runner_drawViews(Runner* runner, int32_t gameW, int32_t gameH, bool debugShowCollisionMasks) {
+    if (!runner->drawAutomatic) return;
     Renderer* renderer = runner->renderer;
     renderer->vtable->clearScreen(renderer, runner->drawBackgroundColor ? runner->backgroundColor : 0, 1.0f);
 
@@ -2119,6 +2125,7 @@ Runner* Runner_create(DataWin* dataWin, VMContext* vm, Renderer* renderer, FileS
     runner->windowTitle = dataWin->gen8.displayName ? strdup(dataWin->gen8.displayName) : nullptr;
     runner->appSurfaceAutoDraw = true;
     runner->usingAppSurface = true;
+    runner->drawAutomatic = true;
     runner->applicationWidth = (int32_t) dataWin->gen8.defaultWindowWidth;
     runner->applicationHeight = (int32_t) dataWin->gen8.defaultWindowHeight;
     runner->oldApplicationWidth = runner->applicationWidth;

src/runner.h

@@ -619,6 +619,7 @@ struct Runner {
     // Just like the original runner, argv[0] is included in gameArgs
     char** gameArgs;
 
+    bool drawAutomatic;
     // Offset between game start time and nowNanos()
     uint64_t gameStartTime;
 };

src/vm_builtins.c

@@ -9316,6 +9316,17 @@ static RValue builtin_psn_setup_trophies(MAYBE_UNUSED VMContext* ctx, RValue* ar
 }
 
 // Draw functions
+
+static RValue builtin_draw_enable_drawevent(VMContext* ctx, RValue* args, MAYBE_UNUSED int32_t argCount) {
+    if (1 > argCount) return RValue_makeUndefined();
+    Runner* runner = ctx->runner;
+    if (runner != nullptr) {
+        runner->drawAutomatic = RValue_toBool(args[0]);
+    }
+    return RValue_makeUndefined();
+}
+
+
 static RValue builtin_draw_sprite(VMContext* ctx, RValue* args, MAYBE_UNUSED int32_t argCount) {
     Runner* runner = ctx->runner;
     if (runner->renderer == nullptr) return RValue_makeUndefined();
@@ -15967,6 +15978,7 @@ void VMBuiltins_registerAll(VMContext* ctx) {
     VM_registerBuiltin(ctx, "psn_setup_trophies", builtin_psn_setup_trophies);
 
     // Draw
+    VM_registerBuiltin(ctx, "draw_enable_drawevent", builtin_draw_enable_drawevent);
     VM_registerBuiltin(ctx, "draw_sprite", builtin_draw_sprite);
     VM_registerBuiltin(ctx, "draw_sprite_ext", builtin_draw_sprite_ext);
     VM_registerBuiltin(ctx, "draw_sprite_tiled", builtin_draw_sprite_tiled);