From d419f413daa75262cbf9ba3eb271c4028b0b6921 Mon Sep 17 00:00:00 2001 From: Stijn Buys Date: Fri, 18 Jul 2008 00:13:07 +0000 Subject: oops --- src/render/dust.cc | 137 +++++++++++++++++++++++++++++++++++++++++++++++++++++ src/render/dust.h | 27 +++++++++++ 2 files changed, 164 insertions(+) create mode 100644 src/render/dust.cc create mode 100644 src/render/dust.h diff --git a/src/render/dust.cc b/src/render/dust.cc new file mode 100644 index 0000000..b9e53a5 --- /dev/null +++ b/src/render/dust.cc @@ -0,0 +1,137 @@ +/* + render/dust.cc + This file is part of the Osirion project and is distributed under + the terms of the GNU General Public License version 2 +*/ + +#include "render/dust.h" +#include "render/gl.h" +#include "core/cvar.h" +#include "core/core.h" +#include "math/functions.h" +#include "sys/sys.h" + +namespace render +{ + +core::Cvar *r_dust; +core::Cvar *r_dustsize; + +const float MAXDUSTDISTANCE = 8.0f; +const float MINDUSTDISTANCE = 6.0f; +const float LOWSPEEDLIMIT = 5.0f; +const float TRAILLENGHT = 0.25f; +const float MAXDUSTALPHA = 0.8f; +float *dust; +size_t dustsize; + +void Dust::init() +{ + r_dust = core::Cvar::get("r_dust", "1", core::Cvar::Archive); + r_dust->set_info("[bool] render dust"); + + r_dustsize = core::Cvar::get("r_dustsize", "128", core::Cvar::Archive); + r_dustsize->set_info("[bool] number of dust particles"); + + dust = 0; + dustsize = (size_t) r_dustsize->value(); +} + +void Dust::shutdown() +{ + if (dust) { + delete dust; + dust = 0; + dustsize = 0; + } +} + +void Dust::draw() +{ + if (!r_dust->value()) { + if (dust) { + delete dust; + dust = 0; + } + return; + } + + if (!core::localcontrol()) { + return; + } + + if ((size_t) r_dustsize->value() != dustsize) { + con_debug << " changing dust size..." << std::endl; + if (dust) { + delete dust; + dust = 0; + } + } + + dustsize = (size_t) r_dustsize->value(); + + if (!dustsize) { + if (dust) { + delete dust; + dust = 0; + } + return; + } + + if (!dust) { + con_debug << " generating dust..." << std::endl; + dust = new float[dustsize*3]; + + for (size_t i = 0; i < dustsize; i++) { + dust[i*3] = core::localcontrol()->location().x + (math::randomf(2) - 1) * MINDUSTDISTANCE; + dust[i*3+1] = core::localcontrol()->location().y + (math::randomf(2) - 1) * MINDUSTDISTANCE; + dust[i*3+2] = core::localcontrol()->location().z + (math::randomf(2) - 1) * MINDUSTDISTANCE; + } + } + + if (!core::localcontrol()->speed()) + return; + + math::Color color; + if (core::localcontrol()->speed() < LOWSPEEDLIMIT) { + color.a = core::localcontrol()->speed() / LOWSPEEDLIMIT; + } + color.a *= MAXDUSTALPHA; + + gl::color(color); + gl::begin(gl::Lines); + math::Vector3f v; + + for (size_t i = 0; i < dustsize; i++) { + v.assign(core::localcontrol()->location()); + for (size_t j = 0; j < 3; j++) + v[j] -= dust[i*3+j]; + + if (v.lengthsquared() > (core::localcontrol()->radius() + MAXDUSTDISTANCE)*(core::localcontrol()->radius() + MAXDUSTDISTANCE)) { +/* + v.assign(core::localcontrol()->state()->location()); + v += core::localcontrol()->state()->axis().forward() * (core::localcontrol()->radius() + math::randomf(MAXDUSTDISTANCE)); + v += core::localcontrol()->state()->axis().left() * (math::randomf(2*MINDUSTDISTANCE) - MINDUSTDISTANCE); + v += core::localcontrol()->state()->axis().up() * (math::randomf(2*MINDUSTDISTANCE) - MINDUSTDISTANCE); + + for (size_t j = 0; j < 3; j++) + dust[i*3+j] = v[j]; +*/ + dust[i*3] = core::localcontrol()->location().x + (math::randomf(2) - 1) * (MAXDUSTDISTANCE + core::localcontrol()->radius()); + dust[i*3+1] = core::localcontrol()->location().y + (math::randomf(2) - 1) * (MAXDUSTDISTANCE + core::localcontrol()->radius()); + dust[i*3+2] = core::localcontrol()->location().z + (math::randomf(2) - 1) * (MAXDUSTDISTANCE + core::localcontrol()->radius()); + } + + glVertex3fv(dust+3*i); + + for (size_t j = 0; j < 3; j++) + v[j] = dust[i*3+j]; + v -= core::localcontrol()->state()->axis().forward() * color.a * TRAILLENGHT; + gl::vertex(v); + } + + gl::end(); +} + +} + diff --git a/src/render/dust.h b/src/render/dust.h new file mode 100644 index 0000000..031743e --- /dev/null +++ b/src/render/dust.h @@ -0,0 +1,27 @@ +/* + render/text.h + This file is part of the Osirion project and is distributed under + the terms of the GNU General Public License version 2 +*/ + +#ifndef __INCLUDED_RENDER_DUST_H__ +#define __INCLUDED_RENDER_DUST_H__ + +namespace render +{ + +/// class to render space dust +class Dust +{ +public: + + static void init(); + + static void shutdown(); + + static void draw(); +}; + +} + +#endif -- cgit v1.2.3