X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fai%2Fai.cpp;h=d50aee5b6219aa06f170bc86b3f03eb0fb1cf7e3;hb=68f47f2824989b21ff9a480a367a6d0a41804f41;hp=fd03ebb4fec74e0cf3309f41e9ba44bee6546f1c;hpb=e872614d387c4bfc3afb04bcc7cba3d9b8f3954b;p=blank.git

diff --git a/src/ai/ai.cpp b/src/ai/ai.cpp
index fd03ebb..d50aee5 100644
--- a/src/ai/ai.cpp
+++ b/src/ai/ai.cpp
@@ -20,16 +20,25 @@ Chaser::Chaser(World &world, Entity &ctrl, Entity &tgt) noexcept
 , flee_speed(-0.005f)
 , stop_dist(10)
 , flee_dist(5) {
-
+	tgt.Ref();
 }
 
 Chaser::~Chaser() {
-
+	tgt.UnRef();
 }
 
 void Chaser::Update(int dt) {
+	if (Target().Dead()) {
+		Controlled().Kill();
+		return;
+	}
+
 	glm::vec3 diff(Target().AbsoluteDifference(Controlled()));
 	float dist = length(diff);
+	if (dist < std::numeric_limits<float>::epsilon()) {
+		Controlled().Velocity(glm::vec3(0.0f));
+		return;
+	}
 	glm::vec3 norm_diff(diff / dist);
 
 	bool line_of_sight = true;
@@ -53,17 +62,24 @@ void Chaser::Update(int dt) {
 
 Controller::Controller(Entity &e) noexcept
 : entity(e) {
-
+	entity.Ref();
 }
 
 Controller::~Controller() {
-
+	entity.UnRef();
 }
 
 
-RandomWalk::RandomWalk(Entity &e) noexcept
+RandomWalk::RandomWalk(Entity &e, std::uint64_t seed) noexcept
 : Controller(e)
-, time_left(0) {
+, random(seed)
+, start_vel(e.Velocity())
+, target_vel(start_vel)
+, start_rot(e.AngularVelocity())
+, target_rot(start_rot)
+, switch_time(0)
+, lerp_max(1.0f)
+, lerp_time(0.0f) {
 
 }
 
@@ -72,45 +88,36 @@ RandomWalk::~RandomWalk() {
 }
 
 void RandomWalk::Update(int dt) {
-	time_left -= dt;
-	if (time_left > 0) return;
-	time_left += 2500 + (rand() % 5000);
-
-	constexpr float move_vel = 0.0005f;
-
-	glm::vec3 new_vel = Controlled().Velocity();
-
-	switch (rand() % 9) {
-		case 0:
-			new_vel.x = -move_vel;
-			break;
-		case 1:
-			new_vel.x = 0.0f;
-			break;
-		case 2:
-			new_vel.x = move_vel;
-			break;
-		case 3:
-			new_vel.y = -move_vel;
-			break;
-		case 4:
-			new_vel.y = 0.0f;
-			break;
-		case 5:
-			new_vel.y = move_vel;
-			break;
-		case 6:
-			new_vel.z = -move_vel;
-			break;
-		case 7:
-			new_vel.z = 0.0f;
-			break;
-		case 8:
-			new_vel.z = move_vel;
-			break;
+	switch_time -= dt;
+	lerp_time -= dt;
+	if (switch_time < 0) {
+		switch_time += 2500 + (random.Next<unsigned short>() % 5000);
+		lerp_max = 1500 + (random.Next<unsigned short>() % 1000);
+		lerp_time = lerp_max;
+		Change();
+	} else if (lerp_time > 0) {
+		float a = std::min(lerp_time / lerp_max, 1.0f);
+		Controlled().Velocity(mix(target_vel, start_vel, a));
+		Controlled().AngularVelocity(mix(target_rot, start_rot, a));
+	} else {
+		Controlled().Velocity(target_vel);
+		Controlled().AngularVelocity(target_rot);
 	}
+}
+
+void RandomWalk::Change() noexcept {
+	start_vel = target_vel;
+	start_rot = target_rot;
+
+	constexpr float base = 0.000001f;
+
+	target_vel.x = base * (random.Next<short>() % 1024);
+	target_vel.y = base * (random.Next<short>() % 1024);
+	target_vel.z = base * (random.Next<short>() % 1024);
 
-	Controlled().Velocity(new_vel);
+	target_rot.x = base * (random.Next<short>() % 1024);
+	target_rot.y = base * (random.Next<short>() % 1024);
+	target_rot.z = base * (random.Next<short>() % 1024);
 }
 
 }