1 files changed, 14 insertions, 16 deletions

diff --git a/src/openvic-simulation/modifier/ModifierSum.cpp b/src/openvic-simulation/modifier/ModifierSum.cpp
index 8e5ce48..f603a5b 100644
--- a/src/openvic-simulation/modifier/ModifierSum.cpp
+++ b/src/openvic-simulation/modifier/ModifierSum.cpp
@@ -19,38 +19,36 @@ bool ModifierSum::has_effect(ModifierEffect const& effect) const {
 	return value_sum.has_effect(effect);
 }
 
-void ModifierSum::add_modifier(Modifier const& modifier, fixed_point_t multiplier) {
-	modifiers[&modifier] += multiplier;
+void ModifierSum::add_modifier(Modifier const& modifier, modifier_source_t source, fixed_point_t multiplier) {
+	modifiers.emplace_back(&modifier, multiplier, source);
 	value_sum.multiply_add(modifier, multiplier);
 }
 
 void ModifierSum::add_modifier_sum(ModifierSum const& modifier_sum) {
-	modifiers += modifier_sum.modifiers;
+	modifiers.insert(modifiers.end(), modifier_sum.modifiers.begin(), modifier_sum.modifiers.end());
 	value_sum += modifier_sum.value_sum;
 }
 
-ModifierSum& ModifierSum::operator+=(Modifier const& modifier) {
-	add_modifier(modifier);
-	return *this;
-}
-
-ModifierSum& ModifierSum::operator+=(ModifierSum const& modifier_sum) {
-	add_modifier_sum(modifier_sum);
-	return *this;
+void ModifierSum::add_modifier_sum_exclude_source(ModifierSum const& modifier_sum, modifier_source_t const& excluded_source) {
+	for (modifier_entry_t const& modifier_entry : modifier_sum.modifiers) {
+		if (modifier_entry.source != excluded_source) {
+			add_modifier(*modifier_entry.modifier, modifier_entry.source, modifier_entry.multiplier);
+		}
+	}
 }
 
 // TODO - include value_sum[effect] in result? Early return if lookup in value_sum fails?
-std::vector<std::pair<Modifier const*, fixed_point_t>> ModifierSum::get_contributing_modifiers(
+std::vector<ModifierSum::modifier_entry_t> ModifierSum::get_contributing_modifiers(
 	ModifierEffect const& effect
 ) const {
-	std::vector<std::pair<Modifier const*, fixed_point_t>> ret;
+	std::vector<modifier_entry_t> ret;
 
-	for (auto const& [modifier, multiplier] : modifiers) {
+	for (modifier_entry_t const& modifier_entry : modifiers) {
 		bool effect_found = false;
-		const fixed_point_t value = modifier->get_effect(effect, &effect_found);
+		const fixed_point_t value = modifier_entry.modifier->get_effect(effect, &effect_found);
 
 		if (effect_found) {
-			ret.emplace_back(modifier, value * multiplier);
+			ret.push_back(modifier_entry);
 		}
 	}