5 files changed, 27 insertions, 4 deletions
diff --git a/src/audio.cpp b/src/audio.cpp
index af6d24b..ff4fcd3 100644
--- a/src/audio.cpp
+++ b/src/audio.cpp
@@ -32,13 +32,19 @@ void clean_sounds(void)
 void sound_t::load(const char *path)
 {
 	printf("load %s\n", path);
-	buffer.loadFromFile(path);
+
+	auto sound = sounds.emplace(sounds.end());
+	sound->loadFromFile(path);
 }
 
 void sound_t::play(void)
 {
+	if (!sounds.size())
+		return;
+
 	auto sound = playing_sounds.emplace(playing_sounds.end());
-	sound->setBuffer(buffer);
+	sound->setBuffer(sounds[rand() % sounds.size()]);
+	sound->setVolume(volume * 100.0f);
 	sound->play();
 }
 
@@ -47,6 +53,7 @@ void ambient_t::load(const char *path)
 	printf("load %s\n", path);
 	sound.openFromFile(path);
 	sound.setLoop(true);
+	sound.setRelativeToListener(true);
 	ambient_sounds.push_back(this);
 }
 
diff --git a/src/common.hpp b/src/common.hpp
index b4c16c6..2b9b9ca 100644
--- a/src/common.hpp
+++ b/src/common.hpp
@@ -432,9 +432,10 @@ namespace audio {
 	void update_ambience(bool playing);
 
 	class sound_t {
-		sf::SoundBuffer buffer;
+		std::vector<sf::SoundBuffer> sounds;
 
 	public:
+		float volume = 1.0f;
 		void load(const char *path);
 		void play(void);
 	};
diff --git a/src/game/assets.cpp b/src/game/assets.cpp
index f14a060..f0dddbf 100644
--- a/src/game/assets.cpp
+++ b/src/game/assets.cpp
@@ -43,6 +43,13 @@ void load(void)
 
 	soldier.fire.load("assets/units/soldier/fire.ogg");
 
+	soldier.step_stone.load("assets/units/soldier/step_stone_1.ogg");
+	soldier.step_stone.load("assets/units/soldier/step_stone_2.ogg");
+	soldier.step_stone.load("assets/units/soldier/step_stone_3.ogg");
+	soldier.step_stone.load("assets/units/soldier/step_stone_4.ogg");
+	soldier.step_stone.load("assets/units/soldier/step_stone_5.ogg");
+	soldier.step_stone.volume = 0.4f;
+
 	spider.idle.load("assets/units/spider/idle", 2, 2, 2);
 	spider.walking.load("assets/units/spider/walking", 2, 2, 2);
 	spider.dead.load("assets/units/spider/dead_", 1);
diff --git a/src/game/game.hpp b/src/game/game.hpp
index 848ba92..bb2ce69 100644
--- a/src/game/game.hpp
+++ b/src/game/game.hpp
@@ -55,7 +55,7 @@ namespace game {
 			render::oriented_sprite_4M2_t legs_idle, legs_walking;
 			render::animated_texture_t dead;
 
-			audio::sound_t fire;
+			audio::sound_t fire, step_stone, step_dirt;
 		} soldier_assets_t;
 
 		typedef struct {
@@ -194,6 +194,8 @@ namespace game {
 			bool blocked;
 			size_t attempts_left;
 			float next_attempt;
+
+			v2f_t last_step;
 		} move;
 
 		bool keep_moving(double speed);
diff --git a/src/game/units.cpp b/src/game/units.cpp
index f3d53d7..30cfdd5 100644
--- a/src/game/units.cpp
+++ b/src/game/units.cpp
@@ -171,6 +171,7 @@ bool unit_t::start_moving(v2f_t dst)
 
 	move.dst = dst;
 	move.path.clear();
+	move.last_step = x;
 
 	rep.cflags = move.cflags & ~(cmodel.cflags);
 	rep.bounds = cmodel.bounds;
@@ -454,6 +455,11 @@ void unit_soldier_t::on_think(void)
 			panic_turn = game->now + 0.3;
 		}
 	}
+
+	if (move.moving && (x - move.last_step).len() > 0.5f) {
+		move.last_step = x;
+		assets::soldier.step_stone.play();
+	}
 }
 
 void unit_soldier_t::on_death(void)