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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "System/mmgr.h"
#include "DirtProjectile.h"
#include "Game/Camera.h"
#include "Game/GlobalUnsynced.h"
#include "Map/Ground.h"
#include "Rendering/GlobalRendering.h"
#include "Rendering/ProjectileDrawer.h"
#include "Rendering/GL/VertexArray.h"
#include "Rendering/Textures/TextureAtlas.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),
CR_RESERVED(8)
));
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CDirtProjectile::CDirtProjectile(const float3& pos, const float3& speed, const float ttl, const float size, const float expansion, float slowdown, CUnit* owner, 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() :
CProjectile(),
alpha(255.0f),
alphaFalloff(10.0f),
size(10.0f),
sizeExpansion(0.0f),
slowdown(1.0f)
{
checkCol = false;
texture = projectileDrawer->randdotstex;
}
CDirtProjectile::~CDirtProjectile()
{}
void CDirtProjectile::Update()
{
speed *= slowdown;
speed.y += mygravity;
pos += speed;
alpha -= alphaFalloff;
size += sizeExpansion;
if (ground->GetApproximateHeight(pos.x, pos.z, false) - 40 > pos.y) {
deleteMe = true;
}
if (alpha <= 0) {
deleteMe = true;
alpha = 0;
}
}
void CDirtProjectile::Draw()
{
float partAbove = (pos.y / (size * camera->up.y));
if (partAbove < -1) {
return;
} else if (partAbove > 1) {
partAbove = 1;
}
inArray = true;
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->AddVertexTC(drawPos - camera->right * interSize - camera->up * interSize * partAbove, texx, texture->ystart, col);
va->AddVertexTC(drawPos + camera->right * interSize - camera->up * interSize * partAbove, texx, texture->yend, col);
va->AddVertexTC(drawPos + camera->right * interSize + camera->up * interSize, texture->xend, texture->yend, col);
va->AddVertexTC(drawPos - camera->right * interSize + camera->up * interSize, texture->xend, texture->ystart, col);
}
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