mirror of
https://github.com/KartKrewDev/RingRacers.git
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f7d396d150
- Spins for 40 tics, speeds up over duration - Starts wide stretched, ends thin and tall - Additive, fades into translucency
70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
// DR. ROBOTNIK'S RING RACERS
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//-----------------------------------------------------------------------------
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// Copyright (C) 2024 by James Robert Roman
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//
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// This program is free software distributed under the
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// terms of the GNU General Public License, version 2.
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// See the 'LICENSE' file for more details.
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//-----------------------------------------------------------------------------
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#include <algorithm>
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#include "objects.hpp"
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#include "../m_easing.h"
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#include "../m_fixed.h"
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#include "../tables.h"
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using namespace srb2::objects;
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namespace
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{
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struct Spinner : Mobj
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{
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static constexpr int kDuration = 40;
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void extravalue1() = delete;
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INT32 powerup() const { return mobj_t::extravalue1; }
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void powerup(INT32 n) { mobj_t::extravalue1 = n; }
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void extravalue2() = delete;
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INT32 duration() const { return mobj_t::extravalue2; }
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void duration(INT32 n) { mobj_t::extravalue2 = n; }
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static void spawn(Mobj* source, INT32 powerup, tic_t duration)
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{
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Spinner* x = Mobj::spawn<Spinner>(source->pos(), MT_GOTPOWERUP);
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K_UpdateMobjItemOverlay(x, powerup, 1);
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x->frame |= FF_PAPERSPRITE | FF_ADD;
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x->fuse = duration;
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x->powerup(powerup);
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x->duration(duration);
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}
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void think()
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{
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fixed_t f = FRACUNIT - std::clamp(fuse, 0, duration()) * FRACUNIT / std::max(duration(), 1);
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angle += Easing_InQuad(f, ANGLE_11hh, ANGLE_45);
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renderflags = (renderflags & ~RF_TRANSMASK) | (Easing_Linear(f, 0, 9) << RF_TRANSSHIFT);
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spritescale({Easing_Linear(f, 4*FRACUNIT, FRACUNIT/4), Easing_Linear(f, FRACUNIT, 6*FRACUNIT)});
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if (--fuse <= 0)
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{
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remove();
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}
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}
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};
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}; // namespace
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void Obj_SpawnPowerUpSpinner(mobj_t *source, INT32 powerup, tic_t duration)
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{
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Spinner::spawn(static_cast<Mobj*>(source), powerup, duration);
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}
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void Obj_TickPowerUpSpinner(mobj_t *mobj)
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{
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static_cast<Spinner*>(mobj)->think();
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}
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