Game: Scale damage flash to max HP

The flash intensity is calculated proportionally to the maximal HP.

Author: SmallJoker

src/client/content_cao.h

@@ -174,6 +174,8 @@ class GenericCAO : public ClientActiveObject
 
 	const bool isImmortal();
 
+	inline const ObjectProperties &getProperties() const { return m_prop; }
+
 	scene::ISceneNode *getSceneNode() const;
 
 	scene::IAnimatedMeshSceneNode *getAnimatedMeshSceneNode() const;

src/client/game.cpp

@@ -2568,14 +2568,18 @@ void Game::handleClientEvent_PlayerDamage(ClientEvent *event, CameraOrientation
 
 	// Damage flash and hurt tilt are not used at death
 	if (client->getHP() > 0) {
-		runData.damage_flash += 95.0f + 3.2f * event->player_damage.amount;
-		runData.damage_flash = MYMIN(runData.damage_flash, 127.0f);
-
 		LocalPlayer *player = client->getEnv().getLocalPlayer();
 
+		f32 hp_max = player->getCAO() ?
+			player->getCAO()->getProperties().hp_max : PLAYER_MAX_HP_DEFAULT;
+		f32 damage_ratio = event->player_damage.amount / hp_max;
+
+		runData.damage_flash += 95.0f + 64.f * damage_ratio;
+		runData.damage_flash = MYMIN(runData.damage_flash, 127.0f);
+
 		player->hurt_tilt_timer = 1.5f;
 		player->hurt_tilt_strength =
-			rangelim(event->player_damage.amount / 4.0f, 1.0f, 4.0f);
+			rangelim(damage_ratio * 5.0f, 1.0f, 4.0f);
 	}
 
 	// Play damage sound