Pixel-Composer/scripts/__VFX/__VFX.gml
2022-12-16 15:18:09 +07:00

192 lines
3.7 KiB
Text

enum ANIM_END_ACTION {
loop,
pingpong,
destroy,
}
enum PARTICLE_BLEND_MODE {
normal,
additive
}
function __part(_node) constructor {
seed = irandom(99999);
node = _node;
active = false;
surf = noone;
x = 0;
y = 0;
sx = 0;
sy = 0;
ac = 0;
g = 0;
wig = 0;
boundary_data = -1;
fx = 0;
fy = 0;
gy = 0;
scx = 1;
scy = 1;
scx_s = 1;
scy_s = 1;
rot = 0;
follow = false;
rot_s = 0;
col = -1;
alp = 1;
alp_draw = alp;
alp_fade = 0;
life = 0;
life_total = 0;
step_int = 0;
anim_speed = 1;
anim_end = ANIM_END_ACTION.loop;
function create(_surf, _x, _y, _life) {
active = true;
surf = _surf;
x = _x;
y = _y;
gy = 0;
life = _life;
life_total = life;
node.onPartCreate(self);
}
function setPhysic(_sx, _sy, _ac, _g, _wig) {
sx = _sx;
sy = _sy;
ac = _ac;
g = _g;
wig = _wig;
}
function setTransform(_scx, _scy, _scxs, _scys, _rot, _rots, _follow) {
scx = _scx;
scy = _scy;
scx_s = _scxs;
scy_s = _scys;
rot = _rot;
rot_s = _rots;
follow = _follow;
}
function setDraw(_col, _alp, _fade) {
col = _col;
alp = _alp;
alp_draw = _alp;
alp_fade = _fade;
}
function kill() {
active = false;
node.onPartDestroy(self);
}
static step = function() {
if(!active) return;
var xp = x, yp = y;
x += sx;
y += sy;
var dirr = point_direction(0, 0, sx, sy);
var diss = point_distance(0, 0, sx, sy);
if(diss > 0) {
diss += ac;
dirr += random_range(-wig, wig);
sx = lengthdir_x(diss, dirr);
sy = lengthdir_y(diss, dirr);
}
gy += g;
y += gy;
if(scx_s < 0) scx = max(scx + scx_s, 0);
else scx = scx + scx_s;
if(scy_s < 0) scy = max(scy + scy_s, 0);
else scy = scy + scy_s;
if(follow)
rot = point_direction(xp, yp, x, y);
else
rot += rot_s;
alp_draw = alp * eval_bezier_cubic(1 - life / life_total, alp_fade[0], alp_fade[1], alp_fade[2], alp_fade[3]);
if(step_int > 0 && safe_mod(life, step_int) == 0)
node.onPartStep(self);
if(life-- < 0) kill();
}
function draw(exact) {
if(!active) return;
var ss = surf;
if(is_array(surf)) {
var ind = abs(round((life_total - life) * anim_speed));
var len = array_length(surf);
switch(anim_end) {
case ANIM_END_ACTION.loop:
ss = surf[safe_mod(ind, len)];
break;
case ANIM_END_ACTION.pingpong:
var ping = safe_mod(ind, (len - 1) * 2 + 1);
ss = surf[ping >= len? (len - 1) * 2 - ping : ping];
break;
case ANIM_END_ACTION.destroy:
if(ind >= len) return;
else ss = surf[ind];
break;
}
}
if(!is_surface(ss)) return;
var cc = (col == -1)? c_white : gradient_eval(col, 1 - life / life_total);
var _xx, _yy;
var s_w = surface_get_width(ss) * scx;
var s_h = surface_get_height(ss) * scy;
if(boundary_data == -1) {
var _pp = point_rotate(-s_w / 2, -s_h / 2, 0, 0, rot);
_xx = x + _pp[0];
_yy = y + _pp[1];
} else {
var ww = boundary_data[2] + boundary_data[0];
var hh = boundary_data[3] + boundary_data[1];
var cx = (boundary_data[0] + boundary_data[2]) / 2;
var cy = (boundary_data[1] + boundary_data[3]) / 2;
var _pp = point_rotate(-cx, -cy, 0, 0, rot);
_xx = x + cx + _pp[0] * scx;
_yy = y + cy + _pp[1] * scy;
}
if(exact) {
_xx = round(_xx);
_yy = round(_yy);
}
draw_surface_ext_safe(ss, _xx, _yy, scx, scy, rot, cc, alp_draw);
}
function getPivot() {
if(boundary_data == -1)
return [x, y];
var ww = (boundary_data[2] - boundary_data[0]) * scx;
var hh = (boundary_data[3] - boundary_data[1]) * scy;
var cx = x + boundary_data[0] + ww / 2;
var cy = y + boundary_data[1] + hh / 2;
return [cx, cy];
}
}