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/*
client/draw.cc
This file is part of the Osirion project and is distributed under
the terms and conditions of the GNU General Public License version 2
*/
#include "core/core.h"
#include "render/render.h"
#include "render/sphere.h"
#include "render/box.h"
#include "client/client.h"
#include "client/camera.h"
#include "client/draw.h"
namespace client
{
render::Sphere sphere(math::Vector3f(0,0,0),1);
render::Box cube(math::Vector3f(0.5f, 0.5f, 0.5f), math::Vector3f(-0.5f, -0.5f, -0.5f));
void draw_entity_sphere(core::Entity *entity)
{
render::gl::color(entity->color());
sphere.radius = entity->radius();
sphere.draw();
}
void draw_entity_cube(core::Entity *entity)
{
cube.topcolor = entity->color();
cube.bottomcolor = entity->color();
cube.radius = entity->radius();
cube.draw();
}
void draw_entity_diamond(core::Entity *entity)
{
using namespace render;
float r = entity->radius();
gl::begin(gl::Lines);
gl::color(1.0f, 0.0f, 0.0f);
gl::vertex(r,0.0f,0.0f);
gl::color(entity->color());
gl::vertex(-r,0.0f,0.0f);
gl::vertex(0.0f,0.0f,r/2);
gl::vertex(0.0f,0.0f,-r/2);
gl::vertex(0.0f,r,0.0f);
gl::vertex(0.0f,-r, 0.0f);
gl::end();
}
// draw an entity of entity_type core::Entity::Default
void draw_entity_default(core::Entity *entity)
{
render::gl::push();
render::gl::translate(entity->location());
switch(entity->shape()) {
case core::Entity::Sphere:
draw_entity_sphere(entity);
break;
case core::Entity::Diamond:
draw_entity_diamond(entity);
break;
case core::Entity::Cube:
default:
draw_entity_cube(entity);
break;
}
render::gl::pop();
}
math::Vector3f v0(1.0f, -1.0f, -1.0f);
math::Vector3f v1(1.0f, 1.0f, -1.0f);
math::Vector3f v2(1.0f, 1.0f, 1.0f);
math::Vector3f v3(1.0f, -1.0f, 1.0f);
math::Vector3f v4(-1.0f, -1.0f, -1.0f);
math::Vector3f v5(-1.0f, 1.0f, -1.0f);
math::Vector3f v6(-1.0f, 1.0f, 1.0f);
math::Vector3f v7(-1.0f, -1.0f, 1.0f);
float angle = 0;
void draw_ship(core::EntityControlable *entity)
{
using math::Vector3f;
using math::Color;
using namespace render;
gl::push();
gl::translate(entity->location());
gl::scale(0.2f, 0.2f, 0.2f);
gl::rotate(entity->direction(), 0.0f, 1.0f, 0.0f );
Vector3f tl(0.25, 0.125, 0.125);
Vector3f br(-0.25, -0.125, -0.125);
Box box(tl, br);
box.draw();
tl = Vector3f(0, 0.07, 0.25);
br = Vector3f(-0.5, -0.07, 0.125);
Box engine1(tl, br);
engine1.topcolor = Color(0.7, 0.7, 0.7);
engine1.bottomcolor = engine1.topcolor * 0.5;
engine1.draw();
tl = Vector3f(0, 0.07, -0.125);
br = Vector3f(-0.5, -0.07, -0.25);
Box engine2(tl, br);
engine2.topcolor = engine1.topcolor;
engine2.bottomcolor = engine1.bottomcolor;
engine2.draw();
tl = Vector3f(0.4, 0.07, 0.07);
br = Vector3f(0.25, -0.07, -0.07);
Box cockpit(tl, br);
cockpit.topcolor = engine1.topcolor;
cockpit.bottomcolor = engine1.bottomcolor;
cockpit.draw();
if(entity->thrust() > 0 ) {
gl::color(1.0f,0 ,0 );
gl::begin(gl::Lines);
gl::vertex(-0.5f, 0, 0.185);
gl::vertex(-0.5f-0.25f*entity->thrust(), 0, 0.185);
gl::vertex(-0.5f, 0, -0.185f);
gl::vertex(-0.5f-0.25f*entity->thrust(), 0, -0.185f);
gl::end();
}
// shield rotation
gl::rotate(angle, 0.0f, 1.0f, 0.0f );
// draw the shield
gl::color(Color(0.0f, 1.0f ,0.0f , 0.5f));
gl::begin(gl::LineStrip);
gl::vertex(v0);
gl::vertex(v1);
gl::vertex(v2);
gl::vertex(v3);
gl::vertex(v0);
gl::end();
gl::begin(gl::LineStrip);
gl::vertex(v4);
gl::vertex(v5);
gl::vertex(v6);
gl::vertex(v7);
gl::vertex(v4);
gl::end();
gl::pop();
}
void draw_spacegrid()
{
using namespace render::gl;
translate(camera::target);
int gridsize = 32;
float s = 1.0f / gridsize;
float y = -4.0f;
float dx = camera::target.x - floorf(camera::target.x);
float dz = camera::target.z - floorf(camera::target.z);
color(0,0, 1.0f);
begin(Lines);
for (int i=-gridsize; i <= gridsize; i++) {
color(0,0, 0, 0);
vertex(i-dx, y, -gridsize-dz);
color(0,0, (gridsize-abs(i))*s, (gridsize-abs(i))*s);
vertex(i-dx, y, -dz);
vertex(i-dx, y, -dz);
color(0,0, 0, 0);
vertex(i-dx, y, gridsize-dz);
vertex(-gridsize-dx, y, i-dz);
color(0,0, (gridsize-abs(i))*s, (gridsize-abs(i))*s);
vertex(-dx, y, i-dz);
vertex(-dx, y, i-dz);
color(0,0, 0, 0);
vertex(gridsize-dx, y, i-dz);
}
end();
}
void draw_world(float seconds)
{
// used for animations
angle += 180.0f * seconds;
if( angle > 360.0f ) {
angle -= 360.0f;
}
// draw entities
using namespace render;
std::map<unsigned int, core::Entity *>::iterator it;
for (it=core::Entity::registry.begin(); it != core::Entity::registry.end(); it++) {
switch ((*it).second->type()) {
case core::Entity::Default:
draw_entity_default((*it).second);
break;
case core::Entity::Controlable:
draw_ship(static_cast<core::EntityControlable *> ((*it).second));
break;
default:
break;
}
}
// draw the background grid
draw_spacegrid();
}
}
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