feat: implemented run animation for revolver

modules/wave_survival/weapons/revolver.cpp

@@ -1,6 +1,7 @@
 #include "revolver.h"
 #include "scene/animation/animation_player.h"
 #include "wave_survival/macros.h"
+#include "wave_survival/player_body.h"
 #include "wave_survival/player_camera.h"
 #include "wave_survival/player_input.h"
 
@@ -10,33 +11,67 @@ void Revolver::_bind_methods() {
 	BIND_PROPERTY(Variant::FLOAT, double_action_spread);
 }
 
-void Revolver::play_equip_anim() {
-	get_anim()->play("equip", 0.0);
-	get_anim()->queue("idle_double");
-	get_anim()->advance(0.0);
-}
-
-void Revolver::shoot() {
-	if (!is_animating()) {
-		if (this->alt_active) {
-			get_anim()->queue("fire_single");
-			this->alt_active = false;
-			this->muzzle->set_spread(this->single_action_spread);
-			this->muzzle->shoot();
-			start_recoil();
-		} else {
-			this->muzzle->set_spread(this->double_action_spread);
-			get_anim()->queue("fire_double");
-		}
+void Revolver::queue_idle_anim() {
+	if (get_anim()->get_current_animation() == "run") {
+		stop_running();
+	}
+	// set a delay between the end of an action and (re)starting the run animation
+	this->run_animation_timer = this->run_animation_delay;
+	if (this->alt_active == true) {
+		get_anim()->queue("idle_single");
+	} else {
 		get_anim()->queue("idle_double");
 	}
 }
 
+void Revolver::start_running() {
+	if (this->run_animation_timer <= 0.0) {
+		get_anim()->queue("run");
+	}
+}
+
+void Revolver::stop_running() {
+	String const current{ get_anim()->get_current_animation() };
+
+	if (current == "run") {
+		get_anim()->stop();
+	}
+	if (current.begins_with("run")) {
+		if (this->alt_active) {
+			get_anim()->queue("run_to_single");
+		} else {
+			get_anim()->queue("run_to_double");
+		}
+	}
+}
+
+void Revolver::play_equip_anim() {
+	get_anim()->play("equip", 0.0);
+	queue_idle_anim();
+	get_anim()->advance(0.0);
+}
+
+void Revolver::shoot() {
+	if (animation_is_idle()) {
+		stop_running();
+		if (this->alt_active) {
+			this->alt_active = false;
+			this->muzzle->set_spread(this->single_action_spread);
+			get_anim()->queue("fire_single");
+		} else {
+			this->muzzle->set_spread(this->double_action_spread);
+			get_anim()->queue("fire_double");
+		}
+		queue_idle_anim();
+	}
+}
+
 void Revolver::cock_hammer() {
-	if (!this->alt_active && !is_animating()) {
+	if (!this->alt_active && animation_is_idle()) {
+		stop_running();
 		this->alt_active = true;
 		get_anim()->queue("to_single");
-		get_anim()->queue("idle_single");
+		queue_idle_anim();
 	}
 }
 
@@ -67,6 +102,18 @@ void Revolver::process(double delta) {
 		double t{ 1.0 - CLAMP(this->recoil_timer / this->recoil_time, 0.0, 1.0) };
 		get_camera()->recoil(Math::lerp((double)this->recoil_force, 0.0, t) * delta);
 	}
+	if (this->run_animation_timer > 0.0) {
+		this->run_animation_timer -= delta;
+	}
+	if (!is_animating() && get_body()->get_is_running()) {
+		start_running();
+	} else if (!get_body()->get_is_running() && get_anim()->get_current_animation() == "run") {
+		queue_idle_anim();
+	}
+}
+
+bool Revolver::animation_is_idle() const {
+	return !is_animating() || get_anim()->get_current_animation() == "run";
 }
 
 void Revolver::_notification(int what) {