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-rw-r--r--Stars45/Trail.cpp296
1 files changed, 148 insertions, 148 deletions
diff --git a/Stars45/Trail.cpp b/Stars45/Trail.cpp
index 69a937a..0eba06f 100644
--- a/Stars45/Trail.cpp
+++ b/Stars45/Trail.cpp
@@ -1,15 +1,15 @@
/* Project Starshatter 4.5
- Destroyer Studios LLC
- Copyright © 1997-2004. All Rights Reserved.
+ Destroyer Studios LLC
+ Copyright © 1997-2004. All Rights Reserved.
- SUBSYSTEM: Stars.exe
- FILE: Trail.cpp
- AUTHOR: John DiCamillo
+ SUBSYSTEM: Stars.exe
+ FILE: Trail.cpp
+ AUTHOR: John DiCamillo
- OVERVIEW
- ========
- Missile Trail representation class
+ OVERVIEW
+ ========
+ Missile Trail representation class
*/
#include "MemDebug.h"
@@ -26,175 +26,175 @@
// +--------------------------------------------------------------------+
Trail::Trail(Bitmap* tex, int n)
- : ntrail(0), length0(0), length1(0), texture(tex), maxtrail(n), dim(1)
+: 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;
+ 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;
+ 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);
- }
- }
+ 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 (!npolys) return;
- if ((flags & RENDER_ADDITIVE) == 0)
- return;
+ if ((flags & RENDER_ADDITIVE) == 0)
+ return;
- if (video && life) {
- const Camera* cam = video->GetCamera();
+ if (video && life) {
+ const Camera* cam = video->GetCamera();
- if (cam)
- UpdateVerts(cam->Pos());
+ if (cam)
+ UpdateVerts(cam->Pos());
- video->DrawPolys(npolys, polys);
- }
+ 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++;
- }
- }
+ 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;
+ double avg = 0;
+
+ for (int i = 0; i < ntrail-1; i++)
+ avg += (trail[i+1]-trail[i]).length();
+ avg /= ntrail;
- for (int i = 0; i < ntrail-1; i++)
- avg += (trail[i+1]-trail[i]).length();
- avg /= ntrail;
-
- return avg;
+ return avg;
}
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