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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "Game/Camera.h"
#include "LightningProjectile.h"
#include "Rendering/GL/RenderDataBuffer.hpp"
#include "Rendering/Textures/TextureAtlas.h"
#include "Sim/Misc/GlobalSynced.h"
#include "Sim/Projectiles/ExplosionGenerator.h"
#include "Sim/Weapons/WeaponDef.h"
#include "System/SpringMath.h"
CR_BIND_DERIVED(CLightningProjectile, CWeaponProjectile, )
CR_REG_METADATA(CLightningProjectile,(
CR_SETFLAG(CF_Synced),
CR_MEMBER(color),
CR_MEMBER(displacements),
CR_MEMBER(displacements2)
))
CLightningProjectile::CLightningProjectile(const ProjectileParams& params): CWeaponProjectile(params)
{
projectileType = WEAPON_LIGHTNING_PROJECTILE;
useAirLos = false;
if (weaponDef != nullptr) {
assert(weaponDef->IsHitScanWeapon());
color = weaponDef->visuals.color;
}
displacements[0] = 0.0f;
displacements2[0] = 0.0f;
for (int d = 1; d < NUM_DISPLACEMENTS; ++d) {
displacements [d] = (gsRNG.NextFloat() - 0.5f) * drawRadius * 0.05f;
displacements2[d] = (gsRNG.NextFloat() - 0.5f) * drawRadius * 0.05f;
}
}
void CLightningProjectile::Update()
{
if (--ttl <= 0) {
deleteMe = true;
} else {
explGenHandler.GenExplosion(cegID, startPos + ((targetPos - startPos) / ttl), (targetPos - startPos), 0.0f, displacements[0], 0.0f, NULL, NULL);
}
for (int d = 1; d < NUM_DISPLACEMENTS; ++d) {
displacements [d] += (gsRNG.NextFloat() - 0.5f) * 0.3f;
displacements2[d] += (gsRNG.NextFloat() - 0.5f) * 0.3f;
}
UpdateInterception();
}
void CLightningProjectile::Draw(GL::RenderDataBufferTC* va) const
{
unsigned char col[4];
col[0] = (unsigned char) (color.x * 255);
col[1] = (unsigned char) (color.y * 255);
col[2] = (unsigned char) (color.z * 255);
col[3] = 1; //intensity*255;
const float3 ddir = (targetPos - startPos).Normalize();
const float3 dif = (startPos - camera->GetPos()).Normalize();
const float3 dir1 = (dif.cross(ddir)).Normalize();
const float3 tmpPos = startPos;
for (int d = 1; d < NUM_DISPLACEMENTS - 1; ++d) {
const float3 mixPos = mix(startPos, targetPos, (d + 1) * 0.111f);
#define WDV (&weaponDef->visuals)
va->SafeAppend({tmpPos + (dir1 * (displacements[d ] + WDV->thickness)), WDV->texture1->xstart, WDV->texture1->ystart, col});
va->SafeAppend({tmpPos + (dir1 * (displacements[d ] - WDV->thickness)), WDV->texture1->xstart, WDV->texture1->yend, col});
va->SafeAppend({mixPos + (dir1 * (displacements[d + 1] - WDV->thickness)), WDV->texture1->xend, WDV->texture1->yend, col});
va->SafeAppend({mixPos + (dir1 * (displacements[d + 1] - WDV->thickness)), WDV->texture1->xend, WDV->texture1->yend, col});
va->SafeAppend({mixPos + (dir1 * (displacements[d + 1] + WDV->thickness)), WDV->texture1->xend, WDV->texture1->ystart, col});
va->SafeAppend({tmpPos + (dir1 * (displacements[d ] + WDV->thickness)), WDV->texture1->xstart, WDV->texture1->ystart, col});
#undef WDV
}
for (int d = 1; d < NUM_DISPLACEMENTS - 1; ++d) {
const float3 mixPos = mix(startPos, targetPos, (d + 1) * 0.111f);
#define WDV (&weaponDef->visuals)
va->SafeAppend({tmpPos + dir1 * (displacements2[d ] + WDV->thickness), WDV->texture1->xstart, WDV->texture1->ystart, col});
va->SafeAppend({tmpPos + dir1 * (displacements2[d ] - WDV->thickness), WDV->texture1->xstart, WDV->texture1->yend, col});
va->SafeAppend({mixPos + dir1 * (displacements2[d + 1] - WDV->thickness), WDV->texture1->xend, WDV->texture1->yend, col});
va->SafeAppend({mixPos + dir1 * (displacements2[d + 1] - WDV->thickness), WDV->texture1->xend, WDV->texture1->yend, col});
va->SafeAppend({mixPos + dir1 * (displacements2[d + 1] + WDV->thickness), WDV->texture1->xend, WDV->texture1->ystart, col});
va->SafeAppend({tmpPos + dir1 * (displacements2[d ] + WDV->thickness), WDV->texture1->xstart, WDV->texture1->ystart, col});
#undef WDV
}
}
void CLightningProjectile::DrawOnMinimap(GL::RenderDataBufferC* va)
{
const unsigned char lcolor[4] = {
(unsigned char)(color[0] * 255),
(unsigned char)(color[1] * 255),
(unsigned char)(color[2] * 255),
255
};
va->SafeAppend({ startPos, lcolor});
va->SafeAppend({targetPos, lcolor});
}
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