PARTICLE::PARTICLE(PARTICLE_SYSTEM* part_sys, PARTICLE_DATA& data, AGENT_HANDLER * ah, double x, double y, double rotation, int life, const ATTACK_TYPE * attack_t, int target_gid, int target_uid, int source_gid, int chain_factor) : part_sys(part_sys), x(x), y(y), theta(rotation * M_PI / 180), life(data.life), data(data), attack_t(attack_t), target_gid(target_gid), target_uid(target_uid), source_gid(source_gid), frame_index(0.), expansion(0.), sprite(NULL), prev_frameindex(-10), is_subimg(false), done_damage(false), agent_handler(ah), chain_factor(chain_factor)
{
// setup chaining
if (chain_factor < 0) {
if (attack_t) this->chain_factor = attack_t->chain_factor;
else chain_factor = 0;
}
// set life
if (life > 0) this->life = life;
start_len = this->life;
if (data.particle_type == 0) this->life -= data.radius/2; // ligntning has double life
if (data.particle_type == 1) this->life *= 2; // ligntning has double life
if (data.particle_type == 2) {
do_damage();
chain();
}
if (data.particle_type == 3) this->life = data.speed; // static particles
if (data.type == 2) this->life = 1; // play once and die (life doesn't matter)
if (data.type == 3) this->frame_index = rand() % data.num_frames; // random start frame
starting_life = this->life;
if (data.particle_type == 2) this->life = data.speed;
full_life = this->life;
}
void LRMarker::mark(
Coord x1, Coord y1, Coord h1, Coord x2, Coord y2, Coord h2
) {
if (canvas_ != nil) {
if (!marked_) {
do_damage(
canvas_,
left_, right_, x1, y1, y1 + h1, x2, y2, y2 + h2
);
} else if (
(y2 > y1_ || y2 == y1_ && x2 < x1_)
|| (y1 < y2_ || y1 == y2_ && x1 > x2_)
) {
do_damage(
canvas_,
left_, right_, x1_, y1_, y1_ + h1_, x2_, y2_, y2_ + h2_
);
do_damage(
canvas_,
left_, right_, x1, y1, y1 + h1, x2, y2, y2 + h2
);
} else {
do_damage(
canvas_,
left_, right_, x1_, y1_, y1_ + h1_, x1, y1, y1 + h1
);
do_damage(
canvas_,
left_, right_, x2_, y2_, y2_ + h2_, x2, y2, y2 + h2
);
}
}
x1_ = x1;
y1_ = y1;
h1_ = h1;
x2_ = x2;
y2_ = y2;
h2_ = h2;
marked_ = true;
}
void in_range(Tower* tower, GameState* state) {
if (tower->shoot_interval - tower->frames_since_last_shot == 0) {
shoot(tower);
} else {
register int p;
for (p = 0; p < tower->ammo; p++) {
if (tower->projectiles[p].live) {
Entity proj, en;
proj.projectile = tower->projectiles[p];
en.enemy = *tower->projectiles[p].target;
if (is_colliding(&proj, &en)) {
do_damage(&tower->projectiles[p], tower->projectiles[p].target);
if (is_dead(tower->projectiles[p].target, state)) {
tower->target = NULL;
tower->projectiles[p].target = NULL;
}
}
}
}
}
}
void PARTICLE::update(DISPLAY& disp, bool is_draw)
{
// update
if (data.particle_type == 3 || data.particle_type == 2) life -= 1;
else if (data.type != 2) life -= data.speed;
if (data.particle_type == 0 || (data.particle_type == 1 && life < starting_life/2)) {
x += data.speed * cos(theta);
y += data.speed * sin(theta);
}
// update frame
frame_index += data.frame_rate;
if (frame_index >= data.num_frames) {
if (data.type == 0) {
frame_index -= data.num_frames;
} else if (data.type) {
frame_index = data.num_frames-1;
if (data.type == 2) life = 0;
}
}
// update expansion (zoom type)
if (data.particle_type == 1) {
if (life < starting_life/2) {
expansion = life / starting_life;
if (!done_damage) do_damage();
if (chain_factor) chain();
}
else expansion = (starting_life - life) / starting_life;
} else if (data.particle_type == 2) {
// update expansion (solid type)
expansion = 1.0;
}
// draw
if (is_draw && is_on_screen(disp)) draw(disp);
}