Set default component ID to -1 in all classes.

include/app/ModuleLightWidget.hpp

@@ -14,7 +14,7 @@ Will access firstLightId, firstLightId + 1, etc. for each added color
 */
 struct ModuleLightWidget : MultiLightWidget {
 	engine::Module* module = NULL;
-	int firstLightId;
+	int firstLightId = -1;
 
 	ui::Tooltip* tooltip = NULL;
 

include/app/ParamWidget.hpp

@@ -13,7 +13,7 @@ namespace app {
 /** Manages an engine::Param on a ModuleWidget. */
 struct ParamWidget : widget::OpaqueWidget {
 	engine::Module* module = NULL;
-	int paramId;
+	int paramId = -1;
 
 	ui::Tooltip* tooltip = NULL;
 	/** For triggering the Change event. `*/

include/app/PortWidget.hpp

@@ -14,8 +14,8 @@ namespace app {
 /** Manages an engine::Port on a ModuleWidget. */
 struct PortWidget : widget::OpaqueWidget {
 	engine::Module* module = NULL;
-	engine::Port::Type type;
-	int portId;
+	engine::Port::Type type = engine::Port::INPUT;
+	int portId = -1;
 
 	ui::Tooltip* tooltip = NULL;
 

include/engine/Cable.hpp

@@ -14,9 +14,9 @@ struct Cable {
 	*/
 	int64_t id = -1;
 	Module* inputModule = NULL;
-	int inputId;
+	int inputId = -1;
 	Module* outputModule = NULL;
-	int outputId;
+	int outputId = -1;
 
 	json_t* toJson();
 	void fromJson(json_t* rootJ);

include/engine/LightInfo.hpp

@@ -11,7 +11,7 @@ struct Module;
 
 struct LightInfo {
 	Module* module = NULL;
-	int lightId;
+	int lightId = -1;
 
 	/** The name of the light, using sentence capitalization.
 	e.g. "Level", "Pitch light", "Mode CV".

include/engine/ParamQuantity.hpp

@@ -17,7 +17,7 @@ struct Module;
 /** A Quantity that wraps an engine::Param. */
 struct ParamQuantity : Quantity {
 	Module* module = NULL;
-	int paramId;
+	int paramId = -1;
 
 	/** The minimum allowed value. */
 	float minValue = 0.f;

include/engine/PortInfo.hpp

@@ -12,8 +12,8 @@ struct Module;
 
 struct PortInfo {
 	Module* module = NULL;
-	Port::Type type;
-	int portId;
+	Port::Type type = Port::INPUT;
+	int portId = -1;
 
 	/** The name of the port, using sentence capitalization.
 	e.g. "Sine", "Pitch input", "Mode CV".

src/engine/ParamQuantity.cpp

@@ -12,7 +12,7 @@ namespace engine {
 
 engine::Param* ParamQuantity::getParam() {
 	assert(module);
-	assert(paramId < (int) module->params.size());
+	assert(0 <= paramId && paramId < (int) module->params.size());
 	return &module->params[paramId];
 }