Implement Iframes for the player when performing a Ground Slam.

Crawler/Crawler.cpp

@@ -223,6 +223,7 @@ void Crawler::HandleUserInput(float fElapsedTime){
 	bool setIdleAnimation=true;
 	if(GetKey(SPACE).bPressed&&player.GetState()==State::NORMAL&&player.GetGroundSlamCooldown()==0){
 		player.Spin(Player::GROUND_SLAM_SPIN_TIME,14*PI);
+		player.iframe_time=Player::GROUND_SLAM_SPIN_TIME;
 	}
 	if(player.GetVelocity()==vf2d{0,0}){
 		if(RightHeld()){
@@ -414,10 +415,11 @@ void Crawler::UpdateBullets(float fElapsedTime){
 		Bullet&b=*it;
 		b.pos+=b.vel*fElapsedTime;
 		if(geom2d::overlaps(geom2d::circle(player.GetPos(),12*player.GetSizeMult()/2),geom2d::circle(b.pos,b.radius))){
-			player.Hurt(b.damage);
-			it=BULLET_LIST.erase(it);
-			if(it==BULLET_LIST.end()){
-				break;
+			if(player.Hurt(b.damage)){
+				it=BULLET_LIST.erase(it);
+				if(it==BULLET_LIST.end()){
+					break;
+				}
 			}
 		}
 		if(b.pos.x<view.GetWorldTL().x||b.pos.x>view.GetWorldBR().x||b.pos.y<view.GetWorldTL().y||b.pos.y>view.GetWorldBR().y){

Crawler/Monster.cpp

@@ -125,7 +125,7 @@ bool Monster::Update(float fElapsedTime){
 				}
 			}
 		}
-		if(geom2d::overlaps(geom2d::circle(pos,12*size/2),geom2d::circle(game->GetPlayer().GetPos(),12*game->GetPlayer().GetSizeMult()/2))){
+		if(!game->GetPlayer().HasIframes()&&geom2d::overlaps(geom2d::circle(pos,12*size/2),geom2d::circle(game->GetPlayer().GetPos(),12*game->GetPlayer().GetSizeMult()/2))){
 			geom2d::line line(pos,game->GetPlayer().GetPos());
 			float dist = line.length();
 			SetPosition(line.rpoint(-0.1));

Crawler/Player.cpp

@@ -88,6 +88,7 @@ State Player::GetState(){
 
 void Player::Update(float fElapsedTime){
 	attack_cooldown_timer=std::max(0.f,attack_cooldown_timer-fElapsedTime);
+	iframe_time=std::max(0.f,iframe_time-fElapsedTime);
 	switch(state){
 		case SPIN:{
 			switch(facingDirection){
@@ -132,7 +133,7 @@ void Player::Update(float fElapsedTime){
 	animation.UpdateState(internal_animState,fElapsedTime);
 	groundSlamCooldown=std::max(0.f,groundSlamCooldown-fElapsedTime);
 	for(Monster&m:MONSTER_LIST){
-		if(geom2d::overlaps(geom2d::circle(pos,12*size/2),geom2d::circle(m.GetPos(),12*m.GetSizeMult()/2))){
+		if(iframe_time==0&&geom2d::overlaps(geom2d::circle(pos,12*size/2),geom2d::circle(m.GetPos(),12*m.GetSizeMult()/2))){
 			if(m.IsAlive()){
 				m.Collision(*this);
 			}
@@ -212,8 +213,12 @@ vf2d Player::GetVelocity(){
 	return vel;
 }
 
-void Player::Hurt(int damage){
-	if(hp<=0) return;
+bool Player::HasIframes(){
+	return iframe_time>0;
+}
+
+bool Player::Hurt(int damage){
+	if(hp<=0||iframe_time!=0) return false;
 	hp=std::max(0,hp-damage);
 	DAMAGENUMBER_LIST.push_back(DamageNumber(pos,damage));
 }

Crawler/Player.h

@@ -24,6 +24,7 @@ private:
 	float lastAnimationFlip=0;
 	float groundSlamCooldown=0;
 	float swordSwingTimer=0;
+	float iframe_time=0;
 	State state=State::NORMAL;
 	Animate2D::Animation<AnimationState>animation;
 	Animate2D::AnimationState internal_animState;
@@ -60,8 +61,9 @@ public:
 	State GetState();
 	Key GetFacingDirection();
 	vf2d GetVelocity();
+	bool HasIframes();
 
-	void Hurt(int damage);
+	bool Hurt(int damage);
 	void UpdateAnimation(AnimationState animState);
 	Animate2D::Frame GetFrame();
 	Key GetLastReleasedMovementKey();