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implement logo breakouts - going too fast though

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This commit is contained in:
Josh Holtrop 2011-10-12 13:37:26 -04:00
parent 744fc2f72d
commit 697af590ea
2 changed files with 51 additions and 3 deletions
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49
modes/Tunnel.cc
View File

@ -19,6 +19,7 @@ using namespace std;
#define RING_LAYER_DIST 10
#define XLATE_RATE 0.02
#define REVOLUTION_TIME 15000
#define DESTROY_DIST 250
Tunnel::Tunnel()
{
@ -30,6 +31,20 @@ Tunnel::~Tunnel()
{
}
void Tunnel::getRandomBreakAxis(float (*axis)[3])
{
double alpha = rand() / (double)RAND_MAX * 2.0 * M_PI;
double beta = rand() / (double)RAND_MAX * (M_PI / 4.0);
(*axis)[0] = cos(alpha) * sin(beta);
(*axis)[2] = sin(alpha) * sin(beta);
(*axis)[1] = cos(beta);
}
float Tunnel::getRandomBreakSpinSpeed()
{
return 0.01 + rand() / (double)RAND_MAX * 0.01;
}
bool Tunnel::expose (GnomeScreensaver & gs)
{
if (m_last_ticks == 0)
@ -52,17 +67,45 @@ bool Tunnel::expose (GnomeScreensaver & gs)
glRotatef(360.0 *
((ticks - m_start_ticks) % REVOLUTION_TIME) / REVOLUTION_TIME,
0, 1, 0);
for (list<LBStruct>::const_iterator it = m_logos.begin();
for (list<LBStruct>::iterator it = m_logos.begin();
it != m_logos.end();
it++)
{
double diff_offset = m_offset - it->offset;
if (diff_offset > DESTROY_DIST)
{
m_logos.erase(it++);
continue;
}
if (it->break_ticks == 0 && diff_offset > BREAKOFF_DIST)
{
it->break_ticks = ticks;
getRandomAxis(&it->spin_axis);
getRandomBreakAxis(&it->break_axis);
it->spin_rate = getRandomBreakSpinSpeed();
}
glPushMatrix();
glTranslatef(0, m_offset - it->offset, 0);
if (it->break_ticks)
{
int break_ticks = ticks - it->break_ticks;
glTranslatef(break_ticks * it->break_axis[0],
break_ticks * it->break_axis[1],
break_ticks * it->break_axis[2]);
}
glTranslatef(0, diff_offset, 0);
glRotatef(it->trot, 0, 1, 0);
glTranslatef(RING_RADIUS, 0, 0);
glRotatef(-90.0, 0, 0, 1);
glRotatef(90.0, 1, 0, 0);
glRotatef(it->zrot, 0, 0, 1);
if (it->break_ticks)
{
glRotatef(it->spin_rate * (ticks - it->break_ticks),
it->spin_axis[0],
it->spin_axis[1],
it->spin_axis[2]);
}
m_logobox.draw();
glPopMatrix();
}
@ -83,7 +126,7 @@ void Tunnel::addRing(double offset)
offset,
zrot,
trot,
{0, 0, 1}
0
};
m_logos.push_back(lbs);
}

5
modes/Tunnel.h
View File

@ -20,10 +20,15 @@ class Tunnel : public Mode
double offset;
float zrot;
float trot;
uint64_t break_ticks;
float spin_axis[3];
float break_axis[3];
float spin_rate;
} LBStruct;
protected:
void addRing(double offset);
void getRandomBreakAxis(float (*axis)[3]);
float getRandomBreakSpinSpeed();
LogoBox m_logobox;
uint64_t m_last_ticks;
uint64_t m_start_ticks;