Method Explosion

src/game/client/components/effects.cpp:326–390

}

void CEffects::Explosion(vec2 Pos, float Alpha)
{
	// add to flow
	for(int y = -8; y <= 8; y++)
		for(int x = -8; x <= 8; x++)
		{
			if(x == 0 && y == 0)
				continue;

			float a = 1 - (length(vec2(x, y)) / length(vec2(8.0f, 8.0f)));
			GameClient()->m_Flow.Add(Pos + vec2(x, y) * 16.0f, normalize(vec2(x, y)) * 5000.0f * a, 10.0f);
		}

	// add the explosion
	CParticle p;
	p.SetDefault();
	p.m_Spr = SPRITE_PART_EXPL01;
	p.m_Pos = Pos;
	p.m_LifeSpan = 0.4f;
	p.m_StartSize = 150.0f;
	p.m_EndSize = 0.0f;
	p.m_Rot = random_angle();
	p.m_Color.a = Alpha;
	p.m_StartAlpha = Alpha;
	GameClient()->m_Particles.Add(CParticles::GROUP_EXPLOSIONS, &p);

	// Nudge position slightly to edge of closest tile so the
	// smoke doesn't get stuck inside the tile.
	if(Collision()->CheckPoint(Pos))
	{
		const vec2 DistanceToTopLeft = Pos - vec2(round_truncate(Pos.x / 32), round_truncate(Pos.y / 32)) * 32;

		vec2 CheckOffset;
		CheckOffset.x = (DistanceToTopLeft.x > 16.0f ? 32.0f : -1.0f);
		CheckOffset.y = (DistanceToTopLeft.y > 16.0f ? 32.0f : -1.0f);
		CheckOffset -= DistanceToTopLeft;

		for(vec2 Mask : {vec2(1.0f, 0.0f), vec2(0.0f, 1.0f), vec2(1.0f, 1.0f)})
		{
			const vec2 NewPos = Pos + CheckOffset * Mask;
			if(!Collision()->CheckPoint(NewPos))
			{
				Pos = NewPos;
				break;
			}
		}
	}

	// add the smoke
	for(int i = 0; i < 24; i++)
	{
		p.SetDefault();
		p.m_Spr = SPRITE_PART_SMOKE;
		p.m_Pos = Pos;
		p.m_Vel = random_direction() * (random_float(1.0f, 1.2f) * 1000.0f);
		p.m_LifeSpan = random_float(0.5f, 0.9f);
		p.m_StartSize = random_float(32.0f, 40.0f);
		p.m_EndSize = 0.0f;