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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef STARBURST_PROJECTILE_H
#define STARBURST_PROJECTILE_H
#include "WeaponProjectile.h"
class CSmokeTrailProjectile;
class CStarburstProjectile : public CWeaponProjectile
{
CR_DECLARE_DERIVED(CStarburstProjectile)
CR_DECLARE_SUB(TracerPart)
public:
// creg only
CStarburstProjectile() { }
CStarburstProjectile(const ProjectileParams& params);
void Collision(CUnit* unit) override;
void Collision(CFeature* feature) override;
void Collision() override;
void Update() override;
void Draw(GL::RenderDataBufferTC* va) const override;
int GetProjectilesCount() const override { return (numParts + 1); }
int ShieldRepulse(const float3& shieldPos, float shieldForce, float shieldMaxSpeed) override;
void SetIgnoreError(bool b) { ignoreError = b; }
private:
void UpdateTargeting();
void UpdateTrajectory();
void InitTracerParts();
void UpdateTracerPart();
void UpdateSmokeTrail();
private:
float3 aimError;
float3 oldSmoke;
float3 oldSmokeDir;
float tracking = 0.0f;
float maxGoodDif = 0.0f;
float maxSpeed = 0.0f;
float acceleration = 0.0f;
float distanceToTravel = 0.0f;
int uptime = 0;
int trailAge = 0;
int numParts = 0;
int missileAge = 0;
unsigned int curTracerPart = 0;
bool ignoreError = false;
bool turnToTarget = true;
bool leaveSmokeTrail = false;
static constexpr unsigned int NUM_TRACER_PARTS = 3;
static constexpr unsigned int MAX_NUM_AGEMODS = 20;
static constexpr unsigned int SMOKE_INTERVAL = 8;
struct TracerPart {
CR_DECLARE_STRUCT(TracerPart)
float3 pos;
float3 dir;
float speedf = 0.0f;
float ageMods[MAX_NUM_AGEMODS] = {1.0f};
unsigned int numAgeMods = 0;
};
TracerPart tracerParts[NUM_TRACER_PARTS];
CSmokeTrailProjectile* smokeTrail = nullptr;
};
#endif /* STARBURST_PROJECTILE_H */
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