improve player responsiveness

3 files changed, 46 insertions, 4 deletions

diff --git a/game/player/PlayerScript.cpp b/game/player/PlayerScript.cpp
index fadca9c..c3843ca 100644
--- a/game/player/PlayerScript.cpp
+++ b/game/player/PlayerScript.cpp
@@ -18,8 +18,38 @@ void PlayerScript::init() {
 	subscribe<CollisionEvent>([this](const CollisionEvent & ev) -> bool {
 		return this->on_collision(ev);
 	});
+	subscribe<KeyPressEvent>([this](const KeyPressEvent & ev) -> bool {
+		if (ev.repeat) return false;
+		return this->on_key_down(ev);
+	});
+	subscribe<KeyReleaseEvent>([this](const KeyReleaseEvent & ev) -> bool {
+		return this->on_key_up(ev);
+	});
 	this->last_fired = std::chrono::steady_clock::now();
+	this->body = get_component<Rigidbody>();
 }
+
+bool PlayerScript::on_key_down(const KeyPressEvent & ev) {
+	const vec2 UP = {0, -1};
+	this->help_kick(UP);
+	return false;
+}
+
+bool PlayerScript::on_key_up(const KeyReleaseEvent & ev) {
+	const vec2 DOWN = {0, 1};
+	this->help_kick(DOWN);
+	return false;
+}
+
+void PlayerScript::help_kick(const vec2 & direction) {
+	// softly "kick" the player (at start/end of flight)
+	vec2 & velocity = this->body->data.linear_velocity;
+	float kick_amount = std::min(
+		velocity.length() * PLAYER_HELP_KICK_SCALE, engine_gravity * PLAYER_HELP_KICK_MAX
+	);
+	velocity += direction * kick_amount;
+}
+
 bool PlayerScript::on_collision(const CollisionEvent & ev) {
 	BehaviorScript & play_scr = this->get_components_by_name<BehaviorScript>("player").front();
 	BehaviorScript & end_scr = this->get_components_by_name<BehaviorScript>("player").back();
@@ -94,7 +124,7 @@ void PlayerScript::fixed_update(crepe::duration_t dt) {
 		emitter.data.boundary.offset = vec2(0, -transform.position.y);
 	}
 
-	Rigidbody & rb = this->get_components_by_name<Rigidbody>("player").front();
+	Rigidbody & rb = this->body;
 	if (this->get_key_state(Keycode::ENTER)) {
 
 		auto now = std::chrono::steady_clock::now();
@@ -105,7 +135,10 @@ void PlayerScript::fixed_update(crepe::duration_t dt) {
 		}
 	}
 	if (this->get_key_state(Keycode::SPACE)) {
-		rb.add_force_linear(vec2(0, -PLAYER_GRAVITY_SCALE / 2.5) * dt.count() / 0.02);
+		rb.add_force_linear(
+			vec2(0, -1) * (engine_gravity * PLAYER_GRAVITY_SCALE * dt.count())
+		);
+
 		if (prev_anim != 1) {
 			for (Animator & anim : animators) {
 				anim.active = true;
@@ -127,7 +160,7 @@ void PlayerScript::fixed_update(crepe::duration_t dt) {
 			current_jetpack_sound = 0;
 		}
 	} else if (transform.position.y == 195) {
-		Rigidbody & rb = this->get_components_by_name<Rigidbody>("player").front();
+		Rigidbody & rb = this->body;
 		if (prev_anim != 0 && rb.data.linear_velocity.x != 0) {
 			for (Animator & anim : animators) {
 				anim.active = true;
diff --git a/game/player/PlayerScript.h b/game/player/PlayerScript.h
index e7d860a..6875b05 100644
--- a/game/player/PlayerScript.h
+++ b/game/player/PlayerScript.h
@@ -1,8 +1,11 @@
 #pragma once
 
+#include "util/OptionalRef.h"
 #include <chrono>
+#include <crepe/api/Config.h>
 #include <crepe/api/Event.h>
 #include <crepe/api/Script.h>
+
 class PlayerScript : public crepe::Script {
 public:
 	void init();
@@ -10,8 +13,11 @@ public:
 
 private:
 	bool on_collision(const crepe::CollisionEvent & ev);
+	bool on_key_down(const crepe::KeyPressEvent & ev);
+	bool on_key_up(const crepe::KeyReleaseEvent & ev);
 	// bool on_key_up(const crepe::KeyReleaseEvent& ev);
 	void shoot(const crepe::vec2 & location, float angle);
+	void help_kick(const crepe::vec2 & direction);
 
 private:
 	int prev_anim = 0;
@@ -19,4 +25,7 @@ private:
 	std::chrono::duration<float> shot_delay = std::chrono::duration<float>(0.5);
 
 	int current_jetpack_sound = 0;
+
+	float & engine_gravity = crepe::Config::get_instance().physics.gravity;
+	crepe::OptionalRef<crepe::Rigidbody> body;
 };
diff --git a/game/player/PlayerSubScene.cpp b/game/player/PlayerSubScene.cpp
index c4d689a..371bc42 100644
--- a/game/player/PlayerSubScene.cpp
+++ b/game/player/PlayerSubScene.cpp
@@ -145,7 +145,7 @@ PlayerSubScene::PlayerSubScene(Scene & scn) {
 	);
 	player.add_component<BoxCollider>(vec2(40, 60), vec2(-20, 0));
 	player.add_component<Rigidbody>(Rigidbody::Data {
-		.gravity_scale = PLAYER_GRAVITY_SCALE,
+		.gravity_scale = 1.0,
 		.body_type = Rigidbody::BodyType::DYNAMIC,
 		.linear_velocity = vec2(PLAYER_SPEED * 0.02, 0),
 		.collision_layers