From d17521c8b9085a91d08fecfd0b51bbbf7b1dccac Mon Sep 17 00:00:00 2001 From: "milo24x7@gmail.com" Date: Sun, 7 Jul 2013 22:08:49 +0000 Subject: Updated open source license declaration and fixed some formatting issues. --- Stars45/Trail.cpp | 424 ++++++++++++++++++++++++++++-------------------------- 1 file changed, 224 insertions(+), 200 deletions(-) (limited to 'Stars45/Trail.cpp') diff --git a/Stars45/Trail.cpp b/Stars45/Trail.cpp index 0eba06f..e826c55 100644 --- a/Stars45/Trail.cpp +++ b/Stars45/Trail.cpp @@ -1,200 +1,224 @@ -/* Project Starshatter 4.5 - Destroyer Studios LLC - Copyright © 1997-2004. All Rights Reserved. - - SUBSYSTEM: Stars.exe - FILE: Trail.cpp - AUTHOR: John DiCamillo - - - OVERVIEW - ======== - Missile Trail representation class -*/ - -#include "MemDebug.h" -#include "Trail.h" -#include "Weapon.h" -#include "Sim.h" - -#include "Game.h" -#include "Light.h" -#include "Bitmap.h" -#include "DataLoader.h" -#include "Sound.h" - -// +--------------------------------------------------------------------+ - -Trail::Trail(Bitmap* tex, int n) -: ntrail(0), length0(0), length1(0), texture(tex), maxtrail(n), dim(1) -{ - trans = true; - luminous = true; - - mtl.Kd = Color::White; - mtl.tex_diffuse = texture; - mtl.tex_emissive = texture; - mtl.blend = Video::BLEND_ADDITIVE; - mtl.luminous = true; - - if (maxtrail < 4) maxtrail = 512; - trail = new(__FILE__,__LINE__) Point[maxtrail]; - verts = new(__FILE__,__LINE__) VertexSet(maxtrail*2); - verts->Clear(); - verts->nverts = 0; - - for (int i = 0; i < maxtrail*2; i++) { - verts->diffuse[i] = D3DCOLOR_RGBA(255,255,255,255); - verts->specular[i] = D3DCOLOR_RGBA( 0, 0, 0,255); - verts->tu[i] = 0.0f; - verts->tv[i] = (i & 1) ? 1.0f : 0.0f; - } - - polys = new(__FILE__,__LINE__) Poly[maxtrail]; - - for (int i = 0; i < maxtrail; i++) { - polys[i].vertex_set = verts; - polys[i].nverts = 4; - polys[i].material = &mtl; - } - - npolys = 0; - nverts = 0; - width = 6; - length = 0; - dim = 3; - - last_point_time = 0; -} - -Trail::~Trail() -{ - delete [] trail; - delete [] polys; - delete verts; -} - -void -Trail::UpdateVerts(const Point& cam_pos) -{ - if (ntrail < 2) return; - - int bright = 255 - dim*ntrail; - - Point head = trail[1] + loc; - Point tail = trail[0] + loc; - Point vcam = cam_pos - head; - Point vtmp = vcam.cross(head-tail); - vtmp.Normalize(); - Point vlat = vtmp * (width + (0.1 * width * ntrail)); - - verts->loc[0] = tail - vlat; - verts->loc[1] = tail + vlat; - verts->diffuse[0] = 0; - verts->diffuse[1] = 0; - - for (int i = 0; i < ntrail-1; i++) { - bright+=dim; - Point head = trail[i+1] + loc; - Point tail = trail[i] + loc; - Point vcam = cam_pos - head; - Point vtmp = vcam.cross(head-tail); - vtmp.Normalize(); - - float trail_width = (float) (width + (ntrail-i) * width * 0.1); - if (i == ntrail-2) trail_width = (float) (width * 0.7); - Point vlat = vtmp * trail_width; - - verts->loc[2*i+2] = head - vlat; - verts->loc[2*i+3] = head + vlat; - - if (bright <= 0) { - verts->diffuse[2*i+2] = 0; - verts->diffuse[2*i+3] = 0; - } - else { - verts->diffuse[2*i+2] = D3DCOLOR_RGBA(bright,bright,bright,bright); - verts->diffuse[2*i+3] = D3DCOLOR_RGBA(bright,bright,bright,bright); - } - } -} - -void -Trail::Render(Video* video, DWORD flags) -{ - if (!npolys) return; - - if ((flags & RENDER_ADDITIVE) == 0) - return; - - if (video && life) { - const Camera* cam = video->GetCamera(); - - if (cam) - UpdateVerts(cam->Pos()); - - video->DrawPolys(npolys, polys); - } -} - -void -Trail::AddPoint(const Point& v) -{ - if (ntrail >= maxtrail-1) return; - - double real_time = Game::RealTime() / 1000.0; - - if (ntrail == 0) { - radius = 1000; - } - else { - radius = (float) Point(v-loc).length(); - } - - // just adjust the last point: - if (ntrail > 1 && real_time - last_point_time < 0.05) { - trail[ntrail-1] = v; - } - - // add a new point: - else { - last_point_time = real_time; - trail[ntrail++] = v; - - nverts += 2; - verts->nverts = nverts; - - if (ntrail > 1) { - length0 = length1; - length1 = length0 + (trail[ntrail-1]-trail[ntrail-2]).length(); - - polys[npolys].vertex_set = verts; - polys[npolys].nverts = 4; - - polys[npolys].verts[0] = nverts-4; - polys[npolys].verts[1] = nverts-2; - polys[npolys].verts[2] = nverts-1; - polys[npolys].verts[3] = nverts-3; - - float tu1 = (float) length1 / 250.0f; - - verts->tu[2*ntrail-1] = tu1; - verts->tu[2*ntrail-2] = tu1; - - npolys++; - } - } -} - -double -Trail::AverageLength() -{ - double avg = 0; - - for (int i = 0; i < ntrail-1; i++) - avg += (trail[i+1]-trail[i]).length(); - avg /= ntrail; - - return avg; -} - +/* Starshatter OpenSource Distribution + Copyright (c) 1997-2004, Destroyer Studios LLC. + All Rights Reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + * Neither the name "Destroyer Studios" nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + + SUBSYSTEM: Stars.exe + FILE: Trail.cpp + AUTHOR: John DiCamillo + + + OVERVIEW + ======== + Missile Trail representation class +*/ + +#include "MemDebug.h" +#include "Trail.h" +#include "Weapon.h" +#include "Sim.h" + +#include "Game.h" +#include "Light.h" +#include "Bitmap.h" +#include "DataLoader.h" +#include "Sound.h" + +// +--------------------------------------------------------------------+ + +Trail::Trail(Bitmap* tex, int n) +: ntrail(0), length0(0), length1(0), texture(tex), maxtrail(n), dim(1) +{ + trans = true; + luminous = true; + + mtl.Kd = Color::White; + mtl.tex_diffuse = texture; + mtl.tex_emissive = texture; + mtl.blend = Video::BLEND_ADDITIVE; + mtl.luminous = true; + + if (maxtrail < 4) maxtrail = 512; + trail = new(__FILE__,__LINE__) Point[maxtrail]; + verts = new(__FILE__,__LINE__) VertexSet(maxtrail*2); + verts->Clear(); + verts->nverts = 0; + + for (int i = 0; i < maxtrail*2; i++) { + verts->diffuse[i] = D3DCOLOR_RGBA(255,255,255,255); + verts->specular[i] = D3DCOLOR_RGBA( 0, 0, 0,255); + verts->tu[i] = 0.0f; + verts->tv[i] = (i & 1) ? 1.0f : 0.0f; + } + + polys = new(__FILE__,__LINE__) Poly[maxtrail]; + + for (int i = 0; i < maxtrail; i++) { + polys[i].vertex_set = verts; + polys[i].nverts = 4; + polys[i].material = &mtl; + } + + npolys = 0; + nverts = 0; + width = 6; + length = 0; + dim = 3; + + last_point_time = 0; +} + +Trail::~Trail() +{ + delete [] trail; + delete [] polys; + delete verts; +} + +void +Trail::UpdateVerts(const Point& cam_pos) +{ + if (ntrail < 2) return; + + int bright = 255 - dim*ntrail; + + Point head = trail[1] + loc; + Point tail = trail[0] + loc; + Point vcam = cam_pos - head; + Point vtmp = vcam.cross(head-tail); + vtmp.Normalize(); + Point vlat = vtmp * (width + (0.1 * width * ntrail)); + + verts->loc[0] = tail - vlat; + verts->loc[1] = tail + vlat; + verts->diffuse[0] = 0; + verts->diffuse[1] = 0; + + for (int i = 0; i < ntrail-1; i++) { + bright+=dim; + Point head = trail[i+1] + loc; + Point tail = trail[i] + loc; + Point vcam = cam_pos - head; + Point vtmp = vcam.cross(head-tail); + vtmp.Normalize(); + + float trail_width = (float) (width + (ntrail-i) * width * 0.1); + if (i == ntrail-2) trail_width = (float) (width * 0.7); + Point vlat = vtmp * trail_width; + + verts->loc[2*i+2] = head - vlat; + verts->loc[2*i+3] = head + vlat; + + if (bright <= 0) { + verts->diffuse[2*i+2] = 0; + verts->diffuse[2*i+3] = 0; + } + else { + verts->diffuse[2*i+2] = D3DCOLOR_RGBA(bright,bright,bright,bright); + verts->diffuse[2*i+3] = D3DCOLOR_RGBA(bright,bright,bright,bright); + } + } +} + +void +Trail::Render(Video* video, DWORD flags) +{ + if (!npolys) return; + + if ((flags & RENDER_ADDITIVE) == 0) + return; + + if (video && life) { + const Camera* cam = video->GetCamera(); + + if (cam) + UpdateVerts(cam->Pos()); + + video->DrawPolys(npolys, polys); + } +} + +void +Trail::AddPoint(const Point& v) +{ + if (ntrail >= maxtrail-1) return; + + double real_time = Game::RealTime() / 1000.0; + + if (ntrail == 0) { + radius = 1000; + } + else { + radius = (float) Point(v-loc).length(); + } + + // just adjust the last point: + if (ntrail > 1 && real_time - last_point_time < 0.05) { + trail[ntrail-1] = v; + } + + // add a new point: + else { + last_point_time = real_time; + trail[ntrail++] = v; + + nverts += 2; + verts->nverts = nverts; + + if (ntrail > 1) { + length0 = length1; + length1 = length0 + (trail[ntrail-1]-trail[ntrail-2]).length(); + + polys[npolys].vertex_set = verts; + polys[npolys].nverts = 4; + + polys[npolys].verts[0] = nverts-4; + polys[npolys].verts[1] = nverts-2; + polys[npolys].verts[2] = nverts-1; + polys[npolys].verts[3] = nverts-3; + + float tu1 = (float) length1 / 250.0f; + + verts->tu[2*ntrail-1] = tu1; + verts->tu[2*ntrail-2] = tu1; + + npolys++; + } + } +} + +double +Trail::AverageLength() +{ + double avg = 0; + + for (int i = 0; i < ntrail-1; i++) + avg += (trail[i+1]-trail[i]).length(); + avg /= ntrail; + + return avg; +} + -- cgit v1.1