attempt to implement draw_enable_drawevent

src/runner.c

@@ -696,6 +696,8 @@ static void rebuildDrawableCacheIfDirty(Runner* runner) {
 }
 
 void Runner_draw(Runner* runner) {
+    if (!runner->drawAutomatic) return;
+
     Room* room = runner->currentRoom;
 
     rebuildDrawableCacheIfDirty(runner);
@@ -927,6 +929,8 @@ void Runner_draw(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);
@@ -1017,6 +1021,8 @@ static void applyFreeCamera(Runner* runner, int32_t* viewX, int32_t* viewY, int3
 }
 
 void Runner_drawViews(Runner* runner, int32_t gameW, int32_t gameH, float displayScaleX, float displayScaleY, bool debugShowCollisionMasks) {
+    if (!runner->drawAutomatic) return;
+
     Renderer* renderer = runner->renderer;
     bool anyViewRendered = false;
 
@@ -1863,6 +1869,7 @@ Runner* Runner_create(DataWin* dataWin, VMContext* vm, Renderer* renderer, FileS
     runner->appSurfaceEnabled = true;
     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

@@ -572,6 +572,8 @@ struct Runner {
     // GameMaker launcher parameters
     // Just like the original runner, argv[0] is included in gameArgs
     char** gameArgs;
+
+    bool drawAutomatic;
 };
 
 const char* Runner_getEventName(int32_t eventType, int32_t eventSubtype);

src/vm_builtins.c

@@ -7946,6 +7946,17 @@ 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();
@@ -13753,6 +13764,7 @@ 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);