Small fixes to prevent possible issues down the road

Thanks @objc

source/main.c

@@ -127,11 +127,14 @@ int main() {
 	//initialize the monster object pool and run the setup function
 	initMonsterObjectPool(&vm);
 
-	//run the onStep function (or die if it's undefined)
+	//setup
 	Toy_bindVM(&vm, invokeOnReady, NULL);
 	Toy_runVM(&vm);
 	Toy_resetVM(&vm, true, false);
 
+	//onStep is called each frame
+	Toy_bindVM(&vm, invokeOnStep, NULL);
+
 	while (!WindowShouldClose()) {
 		//input
 		if (IsKeyDown(KEY_UP)) player.position.y -= 5.0f;
@@ -139,10 +142,8 @@ int main() {
 		if (IsKeyDown(KEY_LEFT)) player.position.x -= 5.0f;
 		if (IsKeyDown(KEY_RIGHT)) player.position.x += 5.0f;
 
-		//run the onStep function (or die if it's undefined)
-		Toy_bindVM(&vm, invokeOnStep, NULL);
+		//run the onStep function
 		Toy_runVM(&vm);
-		Toy_resetVM(&vm, true, false);
 
 		//drawing
 		BeginDrawing();
@@ -157,6 +158,10 @@ int main() {
 		EndDrawing();
 	}
 
+	//clear onStep
+	Toy_resetVM(&vm, true, false);
+
+	//cleanup
 	Toy_bindVM(&vm, invokeOnFinished, NULL);
 	Toy_runVM(&vm);
 	Toy_resetVM(&vm, true, false);

source/monster.c

@@ -31,6 +31,12 @@ static Toy_Array* monsterArray = NULL;
 static void loadMonsterSprite(Toy_VM* vm) {
 	//key, file, width, height -> null
 
+	//check for initialization
+	if (spriteTable == NULL || monsterArray == NULL) {
+		fprintf(stderr, TOY_CC_ERROR "ERROR: Object pool for monster system hasn't been initialized" TOY_CC_RESET "\n");
+		return;
+	}
+
 	//check parameter count
 	if (vm->stack->count < 4) {
 		fprintf(stderr, TOY_CC_ERROR "ERROR: Not enough parameters found in 'loadMonsterSprite'" TOY_CC_RESET "\n");
@@ -80,6 +86,12 @@ static void loadMonsterSprite(Toy_VM* vm) {
 static void spawnMonsterAt(Toy_VM* vm) {
 	//sprite, x, y -> void
 
+	//check for initialization
+	if (spriteTable == NULL || monsterArray == NULL) {
+		fprintf(stderr, TOY_CC_ERROR "ERROR: Object pool for monster system hasn't been initialized" TOY_CC_RESET "\n");
+		return;
+	}
+
 	//check parameter count
 	if (vm->stack->count < 3) {
 		fprintf(stderr, TOY_CC_ERROR "ERROR: Not enough parameters found in 'spawnMonsterAt'" TOY_CC_RESET "\n");
@@ -180,6 +192,13 @@ void initMonsterObjectPool(Toy_VM* vm) {
 void freeMonsterObjectPool(Toy_VM* vm) {
 	(void)vm;
 
+	//free the GL textures
+	for (unsigned int i = 0; i < spriteTable->capacity; i++) {
+		if (TOY_VALUE_IS_OPAQUE(spriteTable->data[i].value)) {
+			UnloadTexture(((MonsterSprite*)TOY_VALUE_AS_OPAQUE(spriteTable->data[i].value))->texture);
+		}
+	}
+
 	Toy_freeTable(spriteTable);
 	spriteTable = NULL;