millorat el spawn d'enemics: perimetre de seguretat i animació amb invulnerabilitat

Makefile

@@ -95,10 +95,10 @@ $(TARGET_FILE):
 	@echo "Build successful: $(TARGET_FILE)"
 
 # Debug build
-debug:
+debug: resources.pack
 	@cmake -B build -DCMAKE_BUILD_TYPE=Debug
 	@cmake --build build
-	@echo "Debug build successful: $(TARGET_FILE)_debug"
+	@echo "Debug build successful: $(TARGET_FILE)"
 
 # ==============================================================================
 # RELEASE PACKAGING TARGETS