/**
* Returns 1 if the bird at height h collides with an object, 0 otherwise.
*/
int bird_collide(int h) {
int ret = detect_collision(h, BIRD_POS+3) ||
detect_collision(h, BIRD_POS) ||
detect_collision(h+1, BIRD_POS+4) ||
detect_collision(h+1, BIRD_POS+3) ||
detect_collision(h+1, BIRD_POS);
return ret;
}
void Game::refresh()
{
if(level_reset_requested)
reset_level_commit();
if(full_reset_requested)
reset_all_commit();
for(auto it = actions.begin(); it != actions.end(); )
{
if(--it->first == 0)
{
it->second();
actions.erase(it++);
}
else
++it;
}
for(auto it1 = entities.begin(); it1 != std::prev(entities.end()); ++it1)
{
for(auto it2 = it1; it2 != entities.end(); ++it2)
{
if(detect_collision((*it1)->hitbox(), (*it2)->hitbox()))
(*it1)->collide_with(**it2);
}
}
for(auto& entity : entities)
if(entity)
{
bool should_destroy = entity->refresh(*this);
if(should_destroy || !detect_collision(entity->hitbox(), current_game_area_hitbox()))
entity.reset();
}
for(auto it = entities_to_activate.begin(); it != entities_to_activate.end();)
{
if(!is_it_reachable((*it)->hitbox()))
{
auto erased_entity_iterator = it++;
entities_to_activate.erase(erased_entity_iterator);
}
else if(detect_collision((*it)->hitbox(), current_game_area_hitbox()))
{
auto moved_entity_iterator = it++;
entities.push_back(*moved_entity_iterator);
entities_to_activate.erase(moved_entity_iterator);
}
else
break;
}
for(auto& entity : entities_to_add)
push_to_container(entity);
entities.erase(std::remove(entities.begin(), entities.end(), nullptr), entities.end());
entities_to_add.clear();
}
// ball paddle collision handler
void ball_paddle(sprite_t* s1, sprite_t* s2)
{
sprite_t* ball;
sprite_t* paddle;
unsigned int collision_direction;
ball = s1->type == BALL_SPRITE ? s1 : s2;
paddle = s1->type == PADDLE_SPRITE ? s1 : s2;
sound_play_fast_invader(0);
collision_direction = detect_collision(paddle, ball);
if (collision_direction == NORTH_COLLISION && breakout_data.ball_speed_y > 0 )
//|| collision_direction == SOUTH_COLLISION )
{
breakout_data.ball_speed_y = -breakout_data.ball_speed_y;
breakout_data.ball_speed_x += breakout_data.paddle_speed_x / 8;
// Make sure the ball is above the paddle to avoid multiple collition between the ball and the paddle
ball->center_pos_y = paddle->center_pos_y - (paddle->size_y_div_2 + ball->size_y_div_2);
}
if (collision_direction == EAST_COLLISION ||
collision_direction == WEST_COLLISION )
{
breakout_data.ball_in_play = false;
sprite_release(&breakout_sprites_vector, ball);
}
}
// brick ball collision handler
void brick_ball(sprite_t* s1, sprite_t* s2)
{
sprite_t* ball;
sprite_t* brick;
unsigned int collision_direction;
ball = s1->type == BALL_SPRITE ? s1 : s2;
brick = s1->type == BRICK_SPRITE ? s1 : s2;
collision_direction = detect_collision(ball, brick);
if (collision_direction == NORTH_COLLISION ||
collision_direction == SOUTH_COLLISION )
breakout_data.ball_speed_y = -breakout_data.ball_speed_y;
if (collision_direction == EAST_COLLISION ||
collision_direction == WEST_COLLISION )
breakout_data.ball_speed_x = -breakout_data.ball_speed_x;
ball_tick(ball);
breakout_data.num_bricks--;
if (breakout_data.num_bricks)
{
//sound_play_enemy_killed();
sound_play_shoot();
}
else
{
sound_play_big_explosion();
}
sprite_release(&breakout_sprites_vector, brick);
}
int CMenu::CheckMouseOver()
{
int mouse_x, mouse_y;
SDL_GetMouseState(&mouse_x, &mouse_y);
SDL_Rect mouse = {mouse_x, mouse_y, 0, 0};
for(size_t i = 0; i < this->Buttons.size(); i++)
{
SDL_Rect button = this->Buttons[i]->norm->clip_rect;
button.x = this->Buttons[i]->x;
button.y = this->Buttons[i]->y;
if(detect_collision(mouse, button))
{
this->Buttons[i]->active = this->Buttons[i]->high;
if(IsPressed(SDL_BUTTON_LEFT))
return this->Buttons[i]->id;
}
else
{
this->Buttons[i]->active = this->Buttons[i]->norm;
}
}
return -1;
}
void Game::push_to_container(std::shared_ptr<Entity> e)
{
if(!is_it_reachable(e->hitbox()))
return;
else if(detect_collision(current_game_area_hitbox(), e->hitbox()))
entities.push_back(e);
else
entities_to_activate.insert(e);
}
bool is_land_at(Game& game, Zespolona pozycja)
{
for(auto& entity : game.active_entities())
{
if(dynamic_cast<Land*>(entity.get()))
{
bool land = detect_collision(entity->hitbox(), AxisAlignedBoundingBox(pozycja - Zespolona(10, 10), pozycja + Zespolona(10, 10)));
if(land) return true;
}
}
return false;
}
// Checks if the snake has bitten itself
bool playerSnake::touched_self(){
// Locate position of the head
SDL_Rect locHead = mparts_locations.at(0);
SDL_Rect part;
// Now check if the head has collided with other elements of the body
for(int i = 1; i < mparts_locations.size(); i ++){
part = mparts_locations.at(i);
if(detect_collision(locHead, part) == true){
return true;
}
}
return false;
}
// If true, player is dead.
int is_player_dead( EntityClass* player_ship )
{
for( int i = 0; i < enemy_num; i++ )
{
if( enemies[i].row != 0 )
{
if( detect_collision( player_ship, &enemies[i] ) == 1 )
{
return 1;
}
}
}
return 0;
}
void check_collisions() {
for( int i = 0; i < max_enemies; i++ )
{
for( int j = 0; j < projectile_num; j++ )
{
if( detect_collision( &enemies[i], &projectiles[j] ) == 1 )
{
enemies[i] = enemies[max_enemies+1];
projectiles[j] = projectiles[max_projectiles+1];
kills++;
break;
}
}
}
}
/** Calculate non bonded forces between a pair of particles.
@param p1 pointer to particle 1.
@param p2 pointer to particle 2.
@param d vector between p1 and p2.
@param dist distance between p1 and p2.
@param dist2 distance squared between p1 and p2. */
inline void add_non_bonded_pair_force(Particle *p1, Particle *p2,
double d[3], double dist, double dist2)
{
IA_parameters *ia_params = get_ia_param(p1->p.type,p2->p.type);
double force[3] = { 0., 0., 0. };
double torque1[3] = { 0., 0., 0. };
double torque2[3] = { 0., 0., 0. };
int j;
/***********************************************/
/* bond creation and breaking */
/***********************************************/
#ifdef COLLISION_DETECTION
if (collision_params.mode > 0)
detect_collision(p1,p2);
#endif
/*affinity potential*/
#ifdef AFFINITY
add_affinity_pair_force(p1,p2,ia_params,d,dist,force);
#endif
FORCE_TRACE(fprintf(stderr, "%d: interaction %d<->%d dist %f\n", this_node, p1->p.identity, p2->p.identity, dist));
/***********************************************/
/* thermostat */
/***********************************************/
#ifdef DPD
/* DPD thermostat forces */
if ( thermo_switch & THERMO_DPD ) add_dpd_thermo_pair_force(p1,p2,d,dist,dist2);
#endif
/** The inter dpd force should not be part of the virial
#ifdef INTER_DPD
add_inter_dpd_pair_force(p1,p2,ia_params,d,dist,dist2);
#endif
/***********************************************/
/* non bonded pair potentials */
/***********************************************/
calc_non_bonded_pair_force(p1,p2,ia_params,d,dist,dist2,force,torque1,torque2);
/***********************************************/
/* short range electrostatics */
/***********************************************/
#ifdef ELECTROSTATICS
if (coulomb.method == COULOMB_DH)
add_dh_coulomb_pair_force(p1,p2,d,dist,force);
if (coulomb.method == COULOMB_RF)
add_rf_coulomb_pair_force(p1,p2,d,dist,force);
#endif
/*********************************************************************/
/* everything before this contributes to the virial pressure in NpT, */
/* but nothing afterwards */
/*********************************************************************/
#ifdef NPT
for (j = 0; j < 3; j++)
if(integ_switch == INTEG_METHOD_NPT_ISO)
nptiso.p_vir[j] += force[j] * d[j];
#endif
/***********************************************/
/* semi-bonded multi-body potentials */
/***********************************************/
/* Directional LJ */
#ifdef LJ_ANGLE
/* This is a multi-body forces that changes the forces of 6 particles */
add_ljangle_force(p1, p2, ia_params, d, dist);
#endif
/***********************************************/
/* long range electrostatics */
/***********************************************/
#ifdef ELECTROSTATICS
/* real space coulomb */
double q1q2 = p1->p.q*p2->p.q;
switch (coulomb.method) {
#ifdef P3M
case COULOMB_ELC_P3M: {
if (q1q2) {
p3m_add_pair_force(q1q2,d,dist2,dist,force);
// forces from the virtual charges
// they go directly onto the particles, since they are not pairwise forces
if (elc_params.dielectric_contrast_on)
ELC_P3M_dielectric_layers_force_contribution(p1, p2, p1->f.f, p2->f.f);
}
break;
}
case COULOMB_P3M_GPU:
case COULOMB_P3M: {
#ifdef NPT
if (q1q2) {
double eng = p3m_add_pair_force(q1q2,d,dist2,dist,force);
if(integ_switch == INTEG_METHOD_NPT_ISO)
nptiso.p_vir[0] += eng;
}
#else
if (q1q2) p3m_add_pair_force(q1q2,d,dist2,dist,force);
#endif
break;
}
#endif
case COULOMB_MMM1D:
if (q1q2) add_mmm1d_coulomb_pair_force(q1q2,d,dist2,dist,force);
break;
case COULOMB_MMM2D:
if (q1q2) add_mmm2d_coulomb_pair_force(q1q2,d,dist2,dist,force);
break;
#ifdef EWALD_GPU
case COULOMB_EWALD_GPU:
if (q1q2) add_ewald_gpu_coulomb_pair_force(p1,p2,d,dist,force);
break;
#endif
default:
break;
}
#endif /*ifdef ELECTROSTATICS */
/***********************************************/
/* long range magnetostatics */
/***********************************************/
#ifdef DIPOLES
/* real space magnetic dipole-dipole */
switch (coulomb.Dmethod) {
#ifdef DP3M
case DIPOLAR_MDLC_P3M:
//fall trough
case DIPOLAR_P3M: {
#ifdef NPT
double eng = dp3m_add_pair_force(p1,p2,d,dist2,dist,force);
if(integ_switch == INTEG_METHOD_NPT_ISO)
nptiso.p_vir[0] += eng;
#else
dp3m_add_pair_force(p1,p2,d,dist2,dist,force);
#endif
break;
}
#endif /*ifdef DP3M */
default:
break;
}
#endif /* ifdef DIPOLES */
/***********************************************/
/* add total nonbonded forces to particle */
/***********************************************/
for (j = 0; j < 3; j++) {
p1->f.f[j] += force[j];
p2->f.f[j] -= force[j];
#ifdef ROTATION
p1->f.torque[j] += torque1[j];
p2->f.torque[j] += torque2[j];
#endif
}
}
// Touched the mouse?
bool playerSnake::touched_mouse(mouse myMouse){
SDL_Rect mouseLoc =myMouse.get_pos();
SDL_Rect head = mparts_locations.at(0);
return detect_collision(mouseLoc, head);
}
void keyboard(unsigned char key, int x, int y)
{
float ypozr,typos1;
ypozr=ypoz*3.14/180;
switch (key) {
case 27:
exit(0);
break;
case 99:
if(camera<4)
{
camera++;
}
else
{
camera=0;
}
break;
case 't':
int fi;
fi=detect_collision(1);
if(matrix[tz][tx].type==5)
{
if(tz==t1z && tx==t1x)
{
txpos=matrix[t2z][t2x].x1+1;
tzpos=matrix[t2z][t2x].z1+1;
}
else
{
txpos=matrix[t1z][t1x].x1+1;
tzpos=matrix[t1z][t1x].z1+1;
}
}
case 'w':
if(camera==4)
{
if(matrix[sel_i+1][sel_j].type!=1)
{
sel_i=sel_i+1;
}
}
break;
case 'a':
if(camera==4)
{
if(matrix[sel_i][sel_j-1].type!=1)
{
sel_j=sel_j-1;
}
}
break;
case 's':
if(camera==4)
{
if(matrix[sel_i-1][sel_j].type!=1)
{
sel_i=sel_i-1;
}
}
break;
case 'd':
if(camera==4)
{
if(matrix[sel_i][sel_j+1].type!=1)
{
sel_j=sel_j+1;
}
}
break;
case '1':
if(camera==3)
{
zoom=zoom+0.05;
}
break;
case '2':
if(camera==3)
{
zoom=zoom-0.05;
}
break;
case 'r':
speed=2.5;
break;
case ' ':
float uy=4.0;
float g=4.0;
float temp,time=0.1;
temp=frangle;
frangle=60.0;
jump=1;
int typ=3;
while(typ==3 && uy>1)
{
time=0.1;
while(1)
{
typos1=uy*time-(g*time*time)/2;
tzpos=tzpos+0.06*cos(ypozr)*vel*speed;
txpos=txpos+0.06*sin(ypozr)*vel*speed;
typos=typos1+typos;
display();
col_prev=detect_collision(0);
// printf("%f %d %f\n",matrix[tz][tx].height,matrix[tz][tx].type,h-1);
if(matrix[tz][tx].type==2 || matrix[tz][tx].type==4)
{
if(typos<h-1)
{
tzpos=tzpos-0.06*cos(ypozr)*vel*speed;
txpos=txpos-0.06*sin(ypozr)*vel*speed;
detect_collision(1);
typos=typos-typos1;
break;
}
}
else if(matrix[tz][tx].height>typos1)
{
if(matrix[tz][tx].type!=1)
typos=typos-typos1;
// printf("%d %d %f %f\n",tx,tz,matrix[tx][tz].height,typos1);
break;
}
typos=typos-typos1;
time=time+0.05;
}
typ=col_prev;
uy=uy-1.0;
}
jump=0;
/* for(float time=0.1;time<2.0;time=time+0.1)
{
typos1=uy*time-(4.0*time*time)/2;
tzpos=tzpos+0.12*cos(ypozr)*vel*speed;
txpos=txpos+0.12*sin(ypozr)*vel*speed;
typos=typos1+typos;
display();
typos=typos-typos1;
}*/
// col_prev=detect_collision(0);
if(col_prev==1)
{
display();
printf("GAME-OVER-JUMP\n");
sleep(2);
exit(0);
}
frangle=temp;
break;
}
}
void keyboard1(int key, int x, int y)
{
float ypozr;
ypozr=ypoz*3.14/180;
if(frangle>20.0)
{
flag=-1.0*flag;
}
if(frangle<-20.0)
{
flag=-1.0*flag;
}
switch (key) {
case GLUT_KEY_LEFT:
ypoz=ypoz+5;
if (ypoz>360) ypoz=0;
glutPostRedisplay();
break;
case GLUT_KEY_UP:
vel=1.0;
frangle=frangle+3.0*flag*speed;
tzpos=tzpos+0.08*cos(ypozr)*speed;
txpos=txpos+0.08*sin(ypozr)*speed;
int col;
col=detect_collision(1);
if(col==1)
{
fall();
}
if(move==0 && col_prev==0 && h>1.0)
{
frangle=frangle-3.0*flag*speed;
tzpos=tzpos-0.08*cos(ypozr)*speed;
txpos=txpos-0.08*sin(ypozr)*speed;
col=detect_collision(1);
}
col_prev=col;
//printf("%f %f\n",tzpos,txpos);
break;
case GLUT_KEY_DOWN:
vel=-1.0;
speed=1.0;
frangle=frangle-3.0*flag;
// tzpos=tzpos+0.08;
tzpos=tzpos-0.08*cos(ypozr);
txpos=txpos-0.08*sin(ypozr);
int col1;
if(col1==1)
{
fall();
}
col1=detect_collision(1);
if(move==0 && col_prev==0 && h>1.0)
{
frangle=frangle+3.0*flag;
// tzpos=tzpos+0.08;
tzpos=tzpos+0.08*cos(ypozr);
txpos=txpos+0.08*sin(ypozr);
col=detect_collision(1);
}
col_prev=col;
break;
case GLUT_KEY_RIGHT:
ypoz=ypoz-5;
if (ypoz<-360) ypoz=0;
glutPostRedisplay();
break;
}
}
bool Game::is_it_reachable(const AxisAlignedBoundingBox& box) const
{
return detect_collision(AxisAlignedBoundingBox(Zespolona(0, std::numeric_limits<double>::infinity()),
Zespolona(level_width(), pozycja_gracza().imag() - 400)),
box);
}
// called if timer event
// id is the id of the timer; you can schedule as many timer events as you want in the callback setup section of glut_setup
void my_TimeOut(int id) {
double accel, vel, y2; //temporary values for comparisons
//BIG for loop for updating particle coordinates with physics
for (int aa = 0; aa < 25; aa++)
{
//Exit if shape hasn't been made yet
if (list_of_shapes[aa].p_ptr == NULL)
{
break;
}
else
{
//rectangles dropping
if (aa % 2 == 0)
{
current = ANIMATION_SPEED/1000.0; // get current time change (converted from milliseconds to seconds)
//Update particle values using equations from lecture
for (int g = 0; g < 4; g++)
{
accel = list_of_shapes[aa].p_ptr[g].force / list_of_shapes[aa].p_ptr[g].mass;
vel = list_of_shapes[aa].p_ptr[g].velocity;
//printf("%f - v\n", vel); //DEBUG
y2 = list_of_shapes[aa].p_ptr[g].y;
list_of_shapes[aa].p_ptr[g].velocity = vel + (accel * current);
list_of_shapes[aa].p_ptr[g].y = y2 + (vel * current) + ( (accel*0.5) * (current*current));
}
//Update y coordinate of object's center
list_of_shapes[aa].curr_y = (list_of_shapes[aa].p_ptr[2].y + list_of_shapes[aa].p_ptr[0].y)/2.0;
//check for collisions
for (int j = 0; j < 25; j++)
{
//Don't check for collisions with itself or nonexistant objects
if (j == aa || list_of_shapes[j].p_ptr == NULL)
continue;
//Distance between two shapes
double distance = detect_collision(list_of_shapes[aa], list_of_shapes[j]);
//printf("%f distance between shape %d and %d\n", distance, aa, j); //DEBUG
//Only go in if statement if current object is still in motion
if (distance < 0.03 && list_of_shapes[aa].p_ptr[0].force != 0.0)
{
//DEBUG
//printf("%f, %f\n", abs(list_of_shapes[aa].old_vel2 - list_of_shapes[aa].p_ptr[0].velocity), list_of_shapes[aa].difference);
//IF object keeps colliding with a surface with the same velocity than it should stop moving
//Animation becomes more realistic
if ( abs(list_of_shapes[aa].old_vel2 - list_of_shapes[aa].p_ptr[0].velocity) == list_of_shapes[aa].difference && list_of_shapes[j].curr_y < list_of_shapes[aa].curr_y)
{
//printf("COllision!!\n"); //DEBUG
for (int r = 0; r < 4; r++)
{
//stop shape from moving
list_of_shapes[aa].p_ptr[r].velocity = 0.0;
list_of_shapes[aa].p_ptr[r].force = 0.0;
}
}
else //Slow down object due to collision
{
list_of_shapes[aa].difference = abs(list_of_shapes[aa].old_vel2 - list_of_shapes[aa].p_ptr[0].velocity);
for (int r = 0; r < 4; r++)
{
list_of_shapes[aa].p_ptr[r].velocity *= -.75;
//Send object at top of collision upwards
if (list_of_shapes[aa].curr_y > list_of_shapes[j].curr_y)
{
list_of_shapes[aa].p_ptr[r].y += ((0.03-distance)*.9);
list_of_shapes[aa].curr_y += ((0.03-distance)*.9);
}
else //Send object at bottom of collision downwards
{
list_of_shapes[aa].p_ptr[r].y -= ((0.03-distance)*.9);
list_of_shapes[aa].curr_y -= ((0.03-distance)*.9);
}
}
}
list_of_shapes[aa].old_vel2 = list_of_shapes[aa].p_ptr[0].velocity;
}
}
double offset;
for (int g = 0; g < 4; g++)
{
//Collision detection with the bottom
if (list_of_shapes[aa].p_ptr[g].y < 0.0)
{
offset = abs((0.0 - list_of_shapes[aa].p_ptr[g].y));
//This stops shapes from bouncing on the ground when they should've stopped moving
if (abs(list_of_shapes[aa].p_ptr[g].velocity) == list_of_shapes[aa].old_vel)
{
for (int r = 0; r < 4; r++)
{
//printf("STOPPED\n"); //DEBUG
//stop shape from moving
list_of_shapes[aa].p_ptr[r].velocity = 0.0;
list_of_shapes[aa].p_ptr[r].force = 0.0;
}
break;
}
else
{
for (int r = 0; r < 4; r++)
{
//switch velocity sign and decreases by 75% due to collision with floor
list_of_shapes[aa].p_ptr[r].velocity *= -.75;
list_of_shapes[aa].p_ptr[r].y += offset;
}
break;
}
//printf("vel - %f\n", list_of_shapes[aa].p_ptr[g].velocity); //DEBUG
list_of_shapes[aa].old_vel = list_of_shapes[aa].p_ptr[g].velocity;
}
}
}
else if (aa % 2 == 1) //Circles with PHYSICS
{
//Update particle values
current = ANIMATION_SPEED/1000.0; // get current time change (convert milliseconds to seconds)
//Update particles according to equations from lecture
for (int g = 0; g < 12; g++)
{
accel = list_of_shapes[aa].p_ptr[g].force / list_of_shapes[aa].p_ptr[g].mass;
// printf("%f\n", accel); //DEBUG
vel = list_of_shapes[aa].p_ptr[g].velocity;
y2 = list_of_shapes[aa].p_ptr[g].y;
list_of_shapes[aa].p_ptr[g].velocity = vel + (accel * current);
list_of_shapes[aa].p_ptr[g].y = y2 + (vel * current) + ( (accel*0.5) * (current*current));
}
//Update y coordinate of object's center
list_of_shapes[aa].curr_y = list_of_shapes[aa].p_ptr[0].y;
//check for collisions
for (int j = 0; j < 25; j++)
{
//Don't check for collisions with itself or nonexistant objects
if (j == aa || list_of_shapes[j].p_ptr == NULL)
continue;
//Distance between two shapes
double distance = detect_collision(list_of_shapes[aa], list_of_shapes[j]);
//Only go in if statement if current object is still in motion
if (distance < 0.03 && list_of_shapes[aa].p_ptr[0].force != 0.0)
{
//printf("vel - %f\n", list_of_shapes[aa].p_ptr[0].velocity); //DEBUG
//IF object keeps colliding with a surface with the same velocity than it should stop moving
//Animation becomes more realistic
if ( abs(list_of_shapes[aa].old_vel2 - list_of_shapes[aa].p_ptr[0].velocity) == list_of_shapes[aa].difference && list_of_shapes[j].curr_y < list_of_shapes[aa].curr_y)
{
//printf("COllision!!\n"); //DEBUG
for (int r = 0; r < 12; r++)
{
//stop shape from moving
list_of_shapes[aa].p_ptr[r].velocity = 0.0;
list_of_shapes[aa].p_ptr[r].force = 0.0;
}
}
else //Slow down object due to collision
{
list_of_shapes[aa].difference = abs(list_of_shapes[aa].old_vel2 - list_of_shapes[aa].p_ptr[0].velocity);
for (int r = 0; r < 12; r++)
{
list_of_shapes[aa].p_ptr[r].velocity *= -.75;
//Send object at top of collision upwards
if (list_of_shapes[aa].curr_y > list_of_shapes[j].curr_y)
{
list_of_shapes[aa].p_ptr[r].y += ((0.03-distance)*.9);
list_of_shapes[aa].curr_y += ((0.03-distance)*.9);
}
else //Send object at bottom of collision downwards
{
list_of_shapes[aa].p_ptr[r].y -= ((0.03-distance)*.9);
list_of_shapes[aa].curr_y -= ((0.03-distance)*.9);
}
}
}
list_of_shapes[aa].old_vel2 = list_of_shapes[aa].p_ptr[0].velocity;
}
}
double offset;
for (int g = 0; g < 12; g++)
{
//Collision detection with the bottom
if (list_of_shapes[aa].p_ptr[g].y <= 0.0)
{
offset = abs((0.0 - list_of_shapes[aa].p_ptr[g].y));
//This stops shapes from bouncing on the ground when it should've stopped moving
if (abs(list_of_shapes[aa].p_ptr[g].velocity) == list_of_shapes[aa].old_vel)
{
for (int r = 0; r < 12; r++)
{
//printf("STOPPED\n"); //DEBUG
//stop shape from moving
list_of_shapes[aa].p_ptr[r].velocity = 0.0;
list_of_shapes[aa].p_ptr[r].force = 0.0;
}
break;
}
else
{
for (int r = 0; r < 12; r++)
{
//switch velocity sign and decrease by 75% due to collision with floor
list_of_shapes[aa].p_ptr[r].velocity *= -.75;
list_of_shapes[aa].p_ptr[r].y += offset;
}
break;
}
list_of_shapes[aa].old_vel = list_of_shapes[aa].p_ptr[g].velocity;
}
}
}
}
}// END of for loop
// clear the buffer
glClear(GL_COLOR_BUFFER_BIT) ;
//Animate shapes to drop down to botton of screen Tetris style
for (int aa = 0; aa < 25; aa++)
{
//If shape doesn't exist then don't animate it
if (list_of_shapes[aa].p_ptr == NULL)
{
break;
}
else
{
//animate rectangles
if (aa % 2 == 0)
{
glColor3f(0,0,1) ; // Blue rectangles
//Draw changes made by simulated gravity
glBegin(GL_QUADS);
for(int g= 0; g < 4; g++)
{
glVertex2d(list_of_shapes[aa].p_ptr[g].x, list_of_shapes[aa].p_ptr[g].y);
}
glEnd();
}
else
{
glColor3f(1,0,0) ; //Red circles
//Draw changes made by simulated gravity
glBegin(GL_TRIANGLE_FAN);
for(int x= 0; x < 12; x++)
{
glVertex2d(list_of_shapes[aa].p_ptr[x].x, list_of_shapes[aa].p_ptr[x].y);
}
glEnd();
}
}
}
// buffer is ready; show me the money!
glutSwapBuffers();
glutTimerFunc(ANIMATION_SPEED, my_TimeOut, 0);// schedule next timer event, according to ANIMATION_SPEED
}