Bullet::Bullet(Game *game, Level *level, Player *player) : BaseEntity(game, level) {
entity_type = TYPE_BULLET;
collision_check = true;
collision_radius = 1;
rotation = player->rotation;
// Calculate velocity depending on player rotation and velocity
velocity.x = fast_cos(rotation) * DEFAULT_VELOCITY + player->velocity.x;
velocity.y = fast_sin(rotation) * DEFAULT_VELOCITY + player->velocity.y;
position.x = player->position.x + fast_cos(rotation) * 25;
position.y = player->position.y + fast_sin(rotation) * 25;
}
/*
* euler2quat - Convert Pitch, Roll and Yaw to quaternion
* @param[in] roll Roll [rad]
* @param[in] pitch Pitch [rad]
* @param[in] yaw Yaw [rad]
* @param[out] q Quaternion
*/
void euler2quat(float roll, float pitch, float yaw, quaternion_t *q)
{
/* Prepare the angles for conversion to quaternions */
pitch *= 0.5f;
roll *= 0.5f;
yaw *= 0.5f;
q->q0 = fast_cos(roll) * fast_cos(pitch) * fast_cos(yaw) + fast_sin(roll) * fast_sin(pitch) * fast_sin(yaw);
q->q1 = fast_sin(roll) * fast_cos(pitch) * fast_cos(yaw) - fast_cos(roll) * fast_sin(pitch) * fast_sin(yaw);
q->q2 = fast_cos(roll) * fast_sin(pitch) * fast_cos(yaw) + fast_sin(roll) * fast_cos(pitch) * fast_sin(yaw);
q->q3 = fast_cos(roll) * fast_cos(pitch) * fast_sin(yaw) - fast_sin(roll) * fast_sin(pitch) * fast_cos(yaw);
}
void Player::update(const float& delta) {
if (game_->nunchuck->button_z() && !dead_) {
// add relative velocity so you get a drag effect
velocity.y += fast_sin(rotation) * acceleration_ * delta;
velocity.x += fast_cos(rotation) * acceleration_ * delta;
} else {
velocity += -velocity * deceleration_ * delta;
}
// Check if cooldown is active
if (firing_cooldown_ > 0)
{
firing_cooldown_ -= delta;
}
// If cooldown isn't active, fire a bullet
if (game_->nunchuck->button_c() && firing_cooldown_ <= 0 && !dead_)
{
level_->addEntity(new Bullet(game_, level_, this));
firing_cooldown_ = FIRING_COOLDOWN;
}
// if speed is faster than max speed, clamp it
if (velocity.length_sq() > square(max_speed_)) {
velocity = velocity.normalized() * max_speed_;
}
// add rotations
if(!dead_){
rotation += game_->nunchuck->joystick().x * rotation_speed_ * delta;
}
position = position + velocity * delta;
}
/**
* Draw ball animation
*/
void draw_balls(SDL_Surface* screen, int time)
{
SDL_Rect spritepos;
// Clear screen
SDL_FillRect(screen, NULL, 0x00000000);
// Draw balls
for(int i = 0; i < NUM_BALLS; i++)
{
// Advance ball
balls[i].x += balls[i].speedx;
balls[i].angle += balls[i].dangle;
balls[i].amplitude *= 0.995;
spritepos.x = balls[i].x;
spritepos.y = HEIGHT - 32 - abs(balls[i].amplitude * fast_sin((balls[i].angle / 180.0) * MATH_PI));
SDL_BlitSurface(ball_surface[balls[i].color], NULL, screen, &spritepos);
// Reset ball if needed
if(balls[i].x > WIDTH)
reset_ball(i);
}
}
/**
* Create a ball sprite
*/
SDL_Surface* sprite_create_ball(float rparam, float gparam, float bparam)
{
SDL_Surface* temp = SDL_CreateRGBSurface(SDL_SWSURFACE, 32, 32, 32,
rmask, gmask, bmask, amask);
for(int y = 0; y < 32; y++)
for(int x = 0; x < 32; x++)
sdl_putpixel(temp, x, y,
rparam * 240 * fast_sin((float) (x / 32.0) * MATH_PI) * fast_sin((float) (y / 32.0) * MATH_PI),
gparam * 240 * fast_sin((float) (x / 32.0) * MATH_PI) * fast_sin((float) (y / 32.0) * MATH_PI),
bparam * 240 * fast_sin((float) (x / 32.0) * MATH_PI) * fast_sin((float) (y / 32.0) * MATH_PI),
240 * fast_sin((float) (x / 32.0) * MATH_PI) * fast_sin((float) (y / 32.0) * MATH_PI));
return temp;
}
void nglRotateZ(const GLFix a)
{
MATRIX rot;
const GLFix sina = fast_sin(a), cosa = fast_cos(a);
M(rot, 0, 0) = cosa;
M(rot, 0, 1) = -sina;
M(rot, 1, 0) = sina;
M(rot, 1, 1) = cosa;
M(rot, 2, 2) = 1;
M(rot, 3, 3) = 1;
nglMultMatMat(transformation, &rot);
}
END_TEST
START_TEST(Maximum_absolute_error_is_small)
{
static const double small = 0.0011;
static const int32_t test_count = 1048577;
for (int32_t i = 0; i < test_count; ++i)
{
const double x = 2.0 * PI * (double)i / (double)(test_count - 1);
const double result = fast_sin(x);
const double std_sin = sin(x);
const double abs_error = fabs(result - std_sin);
fail_unless(abs_error <= small,
"fast_sin(2 * pi * %" PRId32 " / %" PRId32 ") = fast_sin(%.17f)"
" yields %.17f, which is %.17f from %.17f",
i, (test_count - 1), x, result, abs_error, std_sin);
}
}
int16_t fast_cos(int16_t deg)
{
return fast_sin(90+deg);
}
void WorldTask::logic()
{
GLFix dx = 0, dz = 0;
if(keyPressed(KEY_NSPIRE_8)) //Forward
{
GLFix dx1, dz1;
getForward(&dx1, &dz1);
dx += dx1;
dz += dz1;
}
else if(keyPressed(KEY_NSPIRE_2)) //Backward
{
GLFix dx1, dz1;
getForward(&dx1, &dz1);
dx -= dx1;
dz -= dz1;
}
if(keyPressed(KEY_NSPIRE_4)) //Left
{
GLFix dx1, dz1;
getRight(&dx1, &dz1);
dx -= dx1;
dz -= dz1;
}
else if(keyPressed(KEY_NSPIRE_6)) //Right
{
GLFix dx1, dz1;
getRight(&dx1, &dz1);
dx += dx1;
dz += dz1;
}
if(!world.intersect(aabb))
{
AABB aabb_moved = aabb;
aabb_moved.low_x += dx;
aabb_moved.high_x += dx;
if(!world.intersect(aabb_moved))
{
x += dx;
aabb = aabb_moved;
}
aabb_moved = aabb;
aabb_moved.low_z += dz;
aabb_moved.high_z += dz;
if(!world.intersect(aabb_moved))
{
z += dz;
aabb = aabb_moved;
}
aabb_moved = aabb;
aabb_moved.low_y += vy;
aabb_moved.high_y += vy;
can_jump = world.intersect(aabb_moved);
if(!can_jump)
{
y += vy;
aabb = aabb_moved;
}
else if(vy > GLFix(0))
{
can_jump = false;
vy = 0;
}
else
vy = 0;
vy -= 5;
in_water = getBLOCK(world.getBlock((x / BLOCK_SIZE).floor(), ((y + eye_pos) / BLOCK_SIZE).floor(), (z / BLOCK_SIZE).floor())) == BLOCK_WATER;
if(in_water)
can_jump = true;
}
if(keyPressed(KEY_NSPIRE_5) && can_jump) //Jump
{
vy = 50;
can_jump = false;
}
if(has_touchpad)
{
touchpad_report_t touchpad;
touchpad_scan(&touchpad);
if(touchpad.pressed)
{
switch(touchpad.arrow)
{
case TPAD_ARROW_DOWN:
xr += speed()/3;
break;
case TPAD_ARROW_UP:
xr -= speed()/3;
break;
case TPAD_ARROW_LEFT:
yr -= speed()/3;
break;
case TPAD_ARROW_RIGHT:
yr += speed()/3;
break;
case TPAD_ARROW_RIGHTDOWN:
xr += speed()/3;
yr += speed()/3;
break;
case TPAD_ARROW_UPRIGHT:
xr -= speed()/3;
yr += speed()/3;
break;
case TPAD_ARROW_DOWNLEFT:
xr += speed()/3;
yr -= speed()/3;
break;
case TPAD_ARROW_LEFTUP:
xr -= speed()/3;
yr -= speed()/3;
break;
}
}
else if(tp_had_contact && touchpad.contact)
{
yr += (touchpad.x - tp_last_x) / 50;
xr -= (touchpad.y - tp_last_y) / 50;
}
tp_had_contact = touchpad.contact;
tp_last_x = touchpad.x;
tp_last_y = touchpad.y;
}
else
{
if(keyPressed(KEY_NSPIRE_UP))
xr -= speed()/3;
else if(keyPressed(KEY_NSPIRE_DOWN))
xr += speed()/3;
if(keyPressed(KEY_NSPIRE_LEFT))
yr -= speed()/3;
else if(keyPressed(KEY_NSPIRE_RIGHT))
yr += speed()/3;
}
//Normalisation required for rotation with nglRotate
yr.normaliseAngle();
xr.normaliseAngle();
//xr and yr are normalised, so we can't test for negative values
if(xr > GLFix(180))
if(xr <= GLFix(270))
xr = 269;
if(xr < GLFix(180))
if(xr >= GLFix(90))
xr = 89;
//Do test only on every second frame, it's expensive
if(do_test)
{
GLFix dx = fast_sin(yr)*fast_cos(xr), dy = -fast_sin(xr), dz = fast_cos(yr)*fast_cos(xr);
GLFix dist;
if(!world.intersectsRay(x, y + eye_pos, z, dx, dy, dz, selection_pos, selection_side, dist, in_water))
selection_side = AABB::NONE;
else
selection_pos_abs = {x + dx * dist, y + eye_pos + dy * dist, z + dz * dist};
}
world.setPosition(x, y, z);
do_test = !do_test;
if(key_held_down)
key_held_down = keyPressed(KEY_NSPIRE_ESC) || keyPressed(KEY_NSPIRE_7) || keyPressed(KEY_NSPIRE_9) || keyPressed(KEY_NSPIRE_1) || keyPressed(KEY_NSPIRE_3) || keyPressed(KEY_NSPIRE_PERIOD) || keyPressed(KEY_NSPIRE_MINUS) || keyPressed(KEY_NSPIRE_PLUS) || keyPressed(KEY_NSPIRE_MENU);
else if(keyPressed(KEY_NSPIRE_ESC)) //Save & Exit
{
save();
Task::running = false;
return;
}
else if(keyPressed(KEY_NSPIRE_7)) //Put block down
{
if(selection_side != AABB::NONE)
{
if(!world.blockAction(selection_pos.x, selection_pos.y, selection_pos.z))
{
VECTOR3 pos = selection_pos;
switch(selection_side)
{
case AABB::BACK:
++pos.z;
break;
case AABB::FRONT:
--pos.z;
break;
case AABB::LEFT:
--pos.x;
break;
case AABB::RIGHT:
++pos.x;
break;
case AABB::BOTTOM:
--pos.y;
break;
case AABB::TOP:
++pos.y;
break;
default:
puts("This can't normally happen #1");
break;
}
if(!world.intersect(aabb))
{
//Only set the block if there's air
const BLOCK_WDATA current_block = world.getBlock(pos.x, pos.y, pos.z);
if(current_block == BLOCK_AIR || (in_water && getBLOCK(current_block) == BLOCK_WATER))
{
if(!global_block_renderer.isOriented(current_inventory.currentSlot()))
world.changeBlock(pos.x, pos.y, pos.z, current_inventory.currentSlot());
else
{
AABB::SIDE side = selection_side;
//If the block is not fully oriented and has been placed on top or bottom of another block, determine the orientation by yr
if(!global_block_renderer.isFullyOriented(current_inventory.currentSlot()) && (side == AABB::TOP || side == AABB::BOTTOM))
side = yr < GLFix(45) ? AABB::FRONT : yr < GLFix(135) ? AABB::LEFT : yr < GLFix(225) ? AABB::BACK : yr < GLFix(315) ? AABB::RIGHT : AABB::FRONT;
world.changeBlock(pos.x, pos.y, pos.z, getBLOCKWDATA(current_inventory.currentSlot(), side)); //AABB::SIDE is compatible to BLOCK_SIDE
}
//If the player is stuck now, it's because of the block change, so remove it again
if(world.intersect(aabb))
world.changeBlock(pos.x, pos.y, pos.z, BLOCK_AIR);
}
}
}
}
key_held_down = true;
}
else if(keyPressed(KEY_NSPIRE_9)) //Remove block
{
if(selection_side != AABB::NONE && world.getBlock(selection_pos.x, selection_pos.y, selection_pos.z) != BLOCK_BEDROCK)
world.changeBlock(selection_pos.x, selection_pos.y, selection_pos.z, BLOCK_AIR);
key_held_down = true;
}
else if(keyPressed(KEY_NSPIRE_1)) //Switch inventory slot
{
current_inventory.previousSlot();
key_held_down = true;
}
else if(keyPressed(KEY_NSPIRE_3))
{
current_inventory.nextSlot();
key_held_down = true;
}
else if(keyPressed(KEY_NSPIRE_PERIOD)) //Open list of blocks (or take screenshot with Ctrl + .)
{
if(keyPressed(KEY_NSPIRE_CTRL))
{
//Find a filename that doesn't exist
char buf[45];
unsigned int i;
for(i = 0; i <= 999; ++i)
{
sprintf(buf, "/documents/ndless/screenshot_%d.ppm.tns", i);
struct stat stat_buf;
if(stat(buf, &stat_buf) != 0)
break;
}
if(i > 999 || !saveTextureToFile(*screen, buf))
setMessage("Screenshot failed!");
else
{
sprintf(message, "Screenshot taken (%d)!", i);
message_timeout = 20;
}
}
else
block_list_task.makeCurrent();
key_held_down = true;
}
else if(keyPressed(KEY_NSPIRE_MINUS)) //Decrease max view distance
{
int fov = world.fieldOfView() - 1;
world.setFieldOfView(fov < 1 ? 1 : fov);
key_held_down = true;
}
else if(keyPressed(KEY_NSPIRE_PLUS)) //Increase max view distance
{
world.setFieldOfView(world.fieldOfView() + 1);
key_held_down = true;
}
else if(keyPressed(KEY_NSPIRE_MENU))
{
menu_task.makeCurrent();
key_held_down = true;
}
}
void WorldTask::getRight(GLFix *x, GLFix *z)
{
*x = GLFix(fast_sin((yr + 90).normaliseAngle())) * speed();
*z = GLFix(fast_cos((yr + 90).normaliseAngle())) * speed();
}
void WorldTask::getForward(GLFix *x, GLFix *z)
{
*x = GLFix(fast_sin(yr)) * speed();
*z = GLFix(fast_cos(yr)) * speed();
}
static PyObject *
py_noise2(PyObject *self, PyObject *args, PyObject *kwargs)
{
float x, y;
int octaves = 1;
float persistence = 0.5f;
float lacunarity = 2.0f;
float repeatx = FLT_MAX;
float repeaty = FLT_MAX;
float z = 0.0f;
static char *kwlist[] = {"x", "y", "octaves", "persistence", "lacunarity",
"repeatx", "repeaty", "base", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "ff|ifffff:snoise2", kwlist,
&x, &y, &octaves, &persistence, &lacunarity, &repeatx, &repeaty, &z)) {
return NULL;
}
if (octaves <= 0) {
PyErr_SetString(PyExc_ValueError, "Expected octaves value > 0");
return NULL;
}
if (repeatx == FLT_MAX && repeaty == FLT_MAX) {
// Flat noise, no tiling
float freq = 1.0f;
float amp = 1.0f;
float max = 1.0f;
float total = noise2(x + z, y + z);
int i;
for (i = 1; i < octaves; i++) {
freq *= lacunarity;
amp *= persistence;
max += amp;
total += noise2(x * freq + z, y * freq + z) * amp;
}
return (PyObject *) PyFloat_FromDouble((double) (total / max));
} else { // Tiled noise
float w = z;
if (repeaty != FLT_MAX) {
float yf = y * 2.0 / repeaty;
float yr = repeaty * M_1_PI * 0.5;
float vy = fast_sin(yf);
float vyz = fast_cos(yf);
y = vy * yr;
w += vyz * yr;
if (repeatx == FLT_MAX) {
return (PyObject *) PyFloat_FromDouble(
(double) fbm_noise3(x, y, w, octaves, persistence, lacunarity));
}
}
if (repeatx != FLT_MAX) {
float xf = x * 2.0 / repeatx;
float xr = repeatx * M_1_PI * 0.5;
float vx = fast_sin(xf);
float vxz = fast_cos(xf);
x = vx * xr;
z += vxz * xr;
if (repeaty == FLT_MAX) {
return (PyObject *) PyFloat_FromDouble(
(double) fbm_noise3(x, y, z, octaves, persistence, lacunarity));
}
}
return (PyObject *) PyFloat_FromDouble(
(double) fbm_noise4(x, y, z, w, octaves, persistence, lacunarity));
}
}
inline float fast_cos(float x)
{
return fast_sin(x + anglef::pi2);
}
void magicmirror_apply( VJFrame *frame, int w, int h, int vx, int vy, int d, int n )
{
double c1 = (double)vx;
double c2 = (double)vy;
int motion = 0;
if( motionmap_active())
{
motionmap_scale_to( 100,100,0,0, &d, &n, &n__, &N__ );
motion = 1;
}
else
{
n__ = 0;
N__ = 0;
}
double c3 = (double)d * 0.001;
unsigned int dx,dy,x,y,p,q,len=w*h;
double c4 = (double)n * 0.001;
int changed = 0;
uint8_t *Y = frame->data[0];
uint8_t *Cb= frame->data[1];
uint8_t *Cr= frame->data[2];
int interpolate = 1;
if( n__ == N__ || n__ == 0)
interpolate = 0;
if( d != last[1] )
{
changed = 1; last[1] =d;
}
if( n != last[0] )
{
changed = 1; last[0] = n;
}
if(changed==1)
{ // degrees x or y changed, need new sin
for(x=0; x < w ; x++)
{
double res;
fast_sin(res,(double)(c3*x));
funhouse_x[x] = res;
//funhouse_x[x] = sin(c3 * x);
}
for(y=0; y < h; y++)
{
double res;
fast_sin(res,(double)(c4*y));
funhouse_y[y] = res;
//funhouse_y[y] = sin(c4 * y);
}
}
int strides[4] = { len,len,len, 0 };
vj_frame_copy( frame->data, magicmirrorbuf, strides );
for(x=0; x < w; x++)
{
dx = x + funhouse_x[x] * c1;
if(dx < 0) dx += w;
if(dx < 0) dx = 0; else if (dx >= w) dx = w-1;
cache_x[x] = dx;
}
for(y=0; y < h; y++)
{
dy = y + funhouse_y[y] * c2;
if(dy < 0) dy += h;
if(dy < 0) dy = 0; else if (dy >= h) dy = h-1;
cache_y[y] = dy;
}
for(y=1; y < h-1; y++)
{
for(x=1; x < w-1; x++)
{
p = cache_y[y] * w + cache_x[x];
q = y * w + x;
Y[q] = magicmirrorbuf[0][p];
Cb[q] = magicmirrorbuf[1][p];
Cr[q] = magicmirrorbuf[2][p];
}
}
if( interpolate )
{
motionmap_interpolate_frame( frame, N__, n__ );
}
if( motion )
{
motionmap_store_frame(frame);
}
}
inline float fast_cos(float x)
{
return fast_sin(x + 0.5f);
}
float fast_cos(float x, bool lessPrecision) {
return fast_sin(x + 3.1415f / 2, lessPrecision);
}
