space_pirate space_pirate_update(space_pirate p, whitgl_fvec target)
{
if(!p.e.active)
return p;
whitgl_fvec diff = whitgl_fvec_sub(target, p.e.pos);
whitgl_float target_angle = whitgl_fvec_to_angle(diff)+whitgl_pi/2;
whitgl_float ang_diff = whitgl_fwrap(target_angle-p.e.angle, -whitgl_pi, whitgl_pi);
whitgl_bool r, l;
if(ang_diff > 0.2)
{
r = true;
l = false;
}
else if(ang_diff < -0.2)
{
r = false;
l = true;
}
else
{
l = true;
r = true;
}
if(l&&r)
{
whitgl_fvec impulse = {0,-0.002};
impulse = whitgl_rotate_point_around_point(impulse, whitgl_fvec_zero, p.e.angle);
p.speed = whitgl_fvec_add(p.speed, impulse);
}
if(l)
p.angle_speed = whitgl_fclamp(p.angle_speed-0.01, -0.2, 0.2);
if(r)
p.angle_speed = whitgl_fclamp(p.angle_speed+0.01, -0.2, 0.2);
p.angle_speed = p.angle_speed*0.9;
p.e.angle = whitgl_fwrap(p.e.angle+p.angle_speed, 0, whitgl_pi*2);
p.e.pos = whitgl_fvec_add(p.e.pos, p.speed);
p.speed = whitgl_fvec_interpolate(p.speed, whitgl_fvec_zero, 0.01);
whitgl_int i;
for(i=0; i<2; i++)
{
whitgl_bool on = i == 0 ? r : l;
// if(on && !p.was_on[i])
// whitgl_sound_play(i == 0 ? SOUND_THRUST_L : SOUND_THRUST_R, 1.0);
// p.was_on[i] = on;
whitgl_float target = on ? 1 : 0;
p.engine_thrust[i] = p.engine_thrust[i]*0.6 + 0.4*target;
}
return p;
}
whitgl_bool game_snake_collide(game_snake snake, whitgl_faabb box)
{
whitgl_int j;
for(j=0; j<snake.size; j++)
{
whitgl_faabb snake_col;
snake_col.a = whitgl_ivec_to_fvec(snake.pos[j]);
snake_col.b = whitgl_fvec_add(snake_col.a, whitgl_fvec_val(1));
if(whitgl_faabb_intersects(snake_col, box))
return true;
}
return false;
}
game_game game_update(game_game game, const game_map* map, whitgl_ivec screen_size)
{
game.snake = game_snake_update(game.snake, map);
whitgl_int i, j;
for(i=0; i<NUM_WALKERS; i++)
game.walkers[i] = game_walker_update(game.walkers[i], &game, map);
for(i=0; i<NUM_BLOOD; i++)
game.blood[i] = game_blood_update(game.blood[i], map);
for(i=0; i<NUM_SHOTS; i++)
game.shots[i] = game_shot_update(game.shots[i], map);
for(i=0; i<NUM_PICKUPS; i++)
game.pickups[i] = game_pickup_update(game.pickups[i]);
whitgl_fvec target = _game_camera_target(game, screen_size);
game.fcamera = whitgl_fvec_interpolate(game.fcamera, whitgl_fvec_inverse(target), 0.08);
whitgl_fvec shake = {(whitgl_randfloat()-0.5)*game.camera_shake*16, (whitgl_randfloat()-0.5)*game.camera_shake*16};
game.camera = whitgl_fvec_to_ivec(whitgl_fvec_add(game.fcamera, shake));
game.camera_shake -= 0.05;
if(game.camera_shake < 0)
game.camera_shake = 0;
for(i=0; i<NUM_WALKERS; i++)
{
if(!game.walkers[i].active)
continue;
whitgl_faabb walk_col = game_walker_collider(game.walkers[i]);
if(!game_snake_collide(game.snake, walk_col))
continue;
game.walkers[i].active = false;
game.snake.size++;
game.snake.old_pos = game.snake.pos[game.snake.size];
whitgl_sound_play(SOUND_SPLAT00+whitgl_randint(6), whitgl_randfloat()/5+0.9);
whitgl_fvec speed = whitgl_fvec_scale(whitgl_facing_to_fvec(game.snake.dir), whitgl_fvec_val(0.3));
game = _game_spawn_blood(game, game.walkers[i].pos, speed);
game.camera_shake += 0.75;
}
for(i=0; i<NUM_SHOTS; i++)
{
if(!game.shots[i].active)
continue;
whitgl_faabb shot_col = game_shot_collider(game.shots[i]);
if(!game_map_collide(map, shot_col, false))
continue;
game.shots[i].active = false;
whitgl_sound_play(SOUND_GLANCE, whitgl_randfloat()*0.5+0.75);
game.camera_shake += 0.2;
}
for(i=0; i<NUM_SHOTS; i++)
{
if(!game.shots[i].active)
continue;
whitgl_faabb shot_col = game_shot_collider(game.shots[i]);
if(!game_snake_collide(game.snake, shot_col))
continue;
game.shots[i].active = false;
if(game.snake.size > 3)
game.snake.size--;
game.snake.old_pos = game.snake.pos[game.snake.size];
whitgl_sound_play(SOUND_HURT00+whitgl_randint(4), whitgl_randfloat()*0.5+0.75);
game = _game_spawn_blood(game, game.shots[i].pos, game.shots[i].speed);
game.camera_shake += 1;
}
for(i=0; i<NUM_WALKERS; i++)
{
if(!game.walkers[i].active)
continue;
for(j=0; j<NUM_SHOTS; j++)
{
if(!game.shots[j].active)
continue;
if(game.shots[j].owner == i)
continue;
whitgl_faabb shot_col = game_shot_collider(game.shots[j]);
whitgl_faabb walk_col = game_walker_collider(game.walkers[i]);
if(!whitgl_faabb_intersects(shot_col, walk_col))
continue;
game.shots[j].active = false;
game.walkers[i].active = false;
whitgl_sound_play(SOUND_HIT, whitgl_randfloat()*0.5+0.75);
game = _game_spawn_blood(game, game.shots[j].pos, game.shots[j].speed);
game.camera_shake += 0.5;
}
}
for(i=0; i<NUM_WALKERS; i++)
{
if(!game.walkers[i].active)
continue;
if(!game.walkers[i].shooting)
continue;
game.shots[game.next_shot] = game_shot_spawn(game.walkers[i].pos, game.walkers[i].speed < 0, i);
game.next_shot = whitgl_iwrap(game.next_shot+1, 0, NUM_SHOTS);
whitgl_sound_play(SOUND_LASER, whitgl_randfloat()*0.5+0.75);
game.camera_shake += 0.2;
}
for(i=0; i<NUM_PICKUPS; i++)
{
if(!game.pickups[i].active)
continue;
if(game.pickups[i].picked)
continue;
whitgl_faabb pickup_col = game_pickup_collider(game.pickups[i]);
if(!game_snake_collide(game.snake, pickup_col))
continue;
game.pickups[i] = game_pickup_picked(game.pickups[i]);
game.camera_shake += 0.1;
game.score++;
}
if(whitgl_randfloat() > 1-game.snake.size*0.005)
{
whitgl_int segment = whitgl_randint(game.snake.size);
whitgl_fvec spawn_point = {game.snake.pos[segment].x+0.5,game.snake.pos[segment].y+0.5};
whitgl_fvec speed = whitgl_fvec_zero;
speed.y -= 0.3;
game.blood[game.next_blood] = game_blood_spawn(spawn_point, speed);
game.next_blood = whitgl_iwrap(game.next_blood+1, 0, NUM_BLOOD);
}
game.time_taken += 1.0/60.0;
return game;
}
