63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
//
|
|
// Tracer.cpp
|
|
// OpenSpades
|
|
//
|
|
// Created by Tomoaki Kawada on 8/30/13.
|
|
// Copyright (c) 2013 yvt.jp. All rights reserved.
|
|
//
|
|
|
|
#include "Tracer.h"
|
|
#include "Client.h"
|
|
#include "IRenderer.h"
|
|
|
|
namespace spades {
|
|
namespace client {
|
|
Tracer::Tracer(Client *cli, Vector3 p1, Vector3 p2, float bulletVel)
|
|
: client(cli), startPos(p1), velocity(bulletVel) {
|
|
dir = (p2 - p1).Normalize();
|
|
length = (p2 - p1).GetLength();
|
|
|
|
const float maxTimeSpread = 1.f / 60.f;
|
|
const float shutterTime = .3f / 60.f;
|
|
|
|
visibleLength = shutterTime * bulletVel;
|
|
curDistance = -visibleLength;
|
|
curDistance += maxTimeSpread * GetRandom();
|
|
|
|
firstUpdate = true;
|
|
|
|
image = cli->GetRenderer()->RegisterImage("Gfx/Ball.png");
|
|
}
|
|
|
|
bool Tracer::Update(float dt) {
|
|
if (!firstUpdate) {
|
|
curDistance += dt * velocity;
|
|
if (curDistance > length) {
|
|
return false;
|
|
}
|
|
}
|
|
firstUpdate = false;
|
|
return true;
|
|
}
|
|
|
|
void Tracer::Render3D() {
|
|
float startDist = curDistance;
|
|
float endDist = curDistance + visibleLength;
|
|
startDist = std::max(startDist, 0.f);
|
|
endDist = std::min(endDist, length);
|
|
if (startDist >= endDist) {
|
|
return;
|
|
}
|
|
|
|
Vector3 pos1 = startPos + dir * startDist;
|
|
Vector3 pos2 = startPos + dir * endDist;
|
|
IRenderer *r = client->GetRenderer();
|
|
Vector4 col = {1.f, .6f, .2f, 0.f};
|
|
r->SetColorAlphaPremultiplied(col * 1.3f);
|
|
r->AddLongSprite(image, pos1, pos2, .05f);
|
|
}
|
|
|
|
Tracer::~Tracer() {}
|
|
}
|
|
}
|