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/*
client/camera.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 "camera.h"
#include "gl/osiriongl.h"
#include "game/game.h"
#include "common/functions.h"
using common::degrees360f;
using common::degrees180f;
namespace client
{
Camera::Camera()
{
pitch_track = -15.0f;
offset_inc = 5.0f;
yaw_current = 0;
yaw_target = 0;
pitch_current = pitch_track * 2;
pitch_target = pitch_track;
distance = 0.4f;
mode = Track;
}
Camera::~Camera()
{
}
void Camera::draw(float elapsed)
{
if (mode == Track) {
yaw_target = game::ship.yaw();
}
// adjust yaw
float d = degrees180f(yaw_current - yaw_target);
yaw_current = degrees360f( yaw_current - d * elapsed) ;
// adjust pitch target
d = degrees180f(pitch_current - pitch_target);
pitch_current = degrees360f( pitch_current - d *elapsed);
switch (mode) {
case Free:
gl::translate(1.0f+distance, -distance/2, 0.0f);
gl::rotate(-pitch_current, 0, 0, 1.0f);
gl::rotate(-yaw_current, 0, 1.0f, 0);
break;
case Track:
gl::translate(1.0f+distance, -distance , 0.0f);
gl::rotate(-pitch_current, 0, 0, 1.0f);
gl::rotate(-yaw_current, 0, 1.0f, 0);
break;
default:
break;
}
}
void Camera::rotate_right()
{
if (mode == Free ) {
yaw_target = degrees360f( yaw_target + offset_inc);
}
}
void Camera::rotate_left()
{
if (mode == Free ) {
yaw_target = degrees360f( yaw_target - offset_inc);
}
}
void Camera::rotate_up()
{
if (mode == Free ) {
pitch_target = pitch_target - offset_inc;
if (pitch_target < -90.0f) pitch_target = -90.0f;
}
}
void Camera::rotate_down()
{
if (mode == Free ) {
pitch_target = pitch_target + offset_inc;
if (pitch_target > 90.0f) pitch_target = 90.0f;
}
}
void Camera::nextmode() {
switch(mode) {
case Free:
// switch camera to Track mode
mode = Track;
yaw_target = game::ship.yaw();
yaw_current = yaw_target;
pitch_target = pitch_track;
pitch_current = pitch_target;
break;
case Track:
// switch camera to Free mode
mode = Free;
yaw_target = game::ship.yaw();
yaw_current = yaw_target;
pitch_target = pitch_track;
pitch_current = pitch_target;
break;
default:
break;
}
}
} //namespace camera
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