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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "DirtProjectile.h"
#include "Game/Camera.h"
#include "Game/GlobalUnsynced.h"
#include "Map/Ground.h"
#include "Rendering/GlobalRendering.h"
#include "Rendering/Env/Particles/ProjectileDrawer.h"
#include "Rendering/GL/RenderDataBuffer.hpp"
#include "Rendering/Textures/TextureAtlas.h"
#include "Sim/Projectiles/ExpGenSpawnableMemberInfo.h"
CR_BIND_DERIVED(CDirtProjectile, CProjectile, )
CR_REG_METADATA(CDirtProjectile,
(
CR_MEMBER_BEGINFLAG(CM_Config),
CR_MEMBER(alpha),
CR_MEMBER(alphaFalloff),
CR_MEMBER(size),
CR_MEMBER(sizeExpansion),
CR_MEMBER(slowdown),
CR_MEMBER(color),
CR_MEMBER(texture),
CR_MEMBER_ENDFLAG(CM_Config)
))
CDirtProjectile::CDirtProjectile(
CUnit* owner,
const float3& pos,
const float3& speed,
float ttl,
float size,
float expansion,
float slowdown,
const float3& color
):
CProjectile(pos, speed, owner, false, false, false),
alpha(255),
size(size),
sizeExpansion(expansion),
slowdown(slowdown),
color(color)
{
checkCol = false;
alphaFalloff = 255 / ttl;
texture = projectileDrawer->randdotstex;
}
CDirtProjectile::CDirtProjectile() :
alpha(255.0f),
alphaFalloff(10.0f),
size(10.0f),
sizeExpansion(0.0f),
slowdown(1.0f)
{
checkCol = false;
texture = projectileDrawer->randdotstex;
}
void CDirtProjectile::Update()
{
SetVelocityAndSpeed((speed * slowdown) + (UpVector * mygravity));
SetPosition(pos + speed);
alpha = std::max(alpha - alphaFalloff, 0.0f);
size += sizeExpansion;
deleteMe |= (CGround::GetApproximateHeight(pos.x, pos.z, false) - 40.0f > pos.y);
deleteMe |= (alpha <= 0.0f);
}
void CDirtProjectile::Draw(GL::RenderDataBufferTC* va) const
{
float partAbove = (pos.y / (size * camera->GetUp().y));
if (partAbove < -1.0f)
return;
partAbove = std::min(partAbove, 1.0f);
unsigned char col[4];
col[0] = (unsigned char) (color.x * alpha);
col[1] = (unsigned char) (color.y * alpha);
col[2] = (unsigned char) (color.z * alpha);
col[3] = (unsigned char) (alpha)/*- (globalRendering->timeOffset * alphaFalloff)*/;
const float interSize = size + globalRendering->timeOffset * sizeExpansion;
const float texx = texture->xstart + (texture->xend - texture->xstart) * ((1.0f - partAbove) * 0.5f);
va->SafeAppend({drawPos - camera->GetRight() * interSize - camera->GetUp() * interSize * partAbove, texx, texture->ystart, col});
va->SafeAppend({drawPos + camera->GetRight() * interSize - camera->GetUp() * interSize * partAbove, texx, texture->yend, col});
va->SafeAppend({drawPos + camera->GetRight() * interSize + camera->GetUp() * interSize, texture->xend, texture->yend, col});
va->SafeAppend({drawPos + camera->GetRight() * interSize + camera->GetUp() * interSize, texture->xend, texture->yend, col});
va->SafeAppend({drawPos - camera->GetRight() * interSize + camera->GetUp() * interSize, texture->xend, texture->ystart, col});
va->SafeAppend({drawPos - camera->GetRight() * interSize - camera->GetUp() * interSize * partAbove, texx, texture->ystart, col});
}
bool CDirtProjectile::GetMemberInfo(SExpGenSpawnableMemberInfo& memberInfo)
{
if (CProjectile::GetMemberInfo(memberInfo))
return true;
CHECK_MEMBER_INFO_FLOAT (CDirtProjectile, alpha )
CHECK_MEMBER_INFO_FLOAT (CDirtProjectile, alphaFalloff )
CHECK_MEMBER_INFO_FLOAT (CDirtProjectile, size )
CHECK_MEMBER_INFO_FLOAT (CDirtProjectile, sizeExpansion)
CHECK_MEMBER_INFO_FLOAT (CDirtProjectile, slowdown )
CHECK_MEMBER_INFO_FLOAT3(CDirtProjectile, color )
CHECK_MEMBER_INFO_PTR (CDirtProjectile, texture, projectileDrawer->textureAtlas->GetTexturePtr)
return false;
}
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