Pixel-Composer/scripts/__VFX/__VFX.gml

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enum ANIM_END_ACTION {
loop,
pingpong,
destroy,
}
enum PARTICLE_BLEND_MODE {
normal,
alpha,
additive
}
function __part(_node) constructor {
seed = irandom(99999);
node = _node;
active = false;
surf = noone;
arr_type = 0;
prevx = 0;
prevy = 0;
x = 0;
y = 0;
speedx = 0;
speedy = 0;
turning = 0;
turnSpd = 0;
x_history = [];
y_history = [];
drawx = 0;
drawy = 0;
drawrot = 0;
drawsx = 0;
drawsy = 0;
accel = 0;
spVec = [ 0, 0 ];
grav = 0;
gravDir = -90;
gravX = 0;
gravY = 0;
scx = 1;
scy = 1;
sc_sx = 1;
sc_sy = 1;
sct = CURVE_DEF_11;
rot = 0;
follow = false;
rot_s = 0;
col = -1;
blend = c_white;
alp = 1;
alp_draw = alp;
alp_fade = 0;
life = 0;
life_total = 0;
life_incr = 0;
step_int = 0;
anim_speed = 1;
anim_end = ANIM_END_ACTION.loop;
ground = false;
ground_y = 0;
ground_bounce = 0;
ground_friction = 1;
trailLife = 0;
trailActive = false;
frame = 0;
static reset = function() { #region
INLINE
surf = noone;
prevx = undefined;
prevy = undefined;
} #endregion
static create = function(_surf, _x, _y, _life) { #region
INLINE
active = true;
surf = _surf;
x = _x;
y = _y;
drawx = x;
drawy = y;
life_incr = 0;
life = _life;
life_total = life;
if(node.onPartCreate != noone) node.onPartCreate(self);
trailLife = 0;
x_history = array_create(life);
y_history = array_create(life);
} #endregion
static setPhysic = function(_sx, _sy, _ac, _g, _gDir, _turn, _turnSpd) { #region
INLINE
speedx = _sx;
speedy = _sy;
accel = _ac;
grav = _g;
gravDir = _gDir;
gravX = lengthdir_x(grav, gravDir);
gravY = lengthdir_y(grav, gravDir);
turning = _turn;
turnSpd = _turnSpd;
spVec[0] = point_distance(0, 0, speedx, speedy);
spVec[1] = point_direction(0, 0, speedx, speedy);
} #endregion
static setWiggle = function(wiggle_maps) { #region
INLINE
wig_psx = wiggle_maps.wig_psx;
wig_psy = wiggle_maps.wig_psy;
wig_rot = wiggle_maps.wig_rot;
wig_scx = wiggle_maps.wig_scx;
wig_scy = wiggle_maps.wig_scy;
wig_dir = wiggle_maps.wig_dir;
} #endregion
static setGround = function(_ground, _ground_offset, _ground_bounce, _ground_frict) { #region
INLINE
ground = _ground;
ground_y = y + _ground_offset;
ground_bounce = _ground_bounce;
ground_friction = clamp(1 - _ground_frict, 0, 1);
} #endregion
static setTransform = function(_scx, _scy, _sct, _rot, _rots, _follow) { #region
INLINE
sc_sx = _scx;
sc_sy = _scy;
sct = _sct;
rot = _rot;
rot_s = _rots;
follow = _follow;
} #endregion
static setDraw = function(_col, _blend, _alp, _fade) { #region
INLINE
col = _col;
blend = _blend;
alp = _alp;
alp_draw = _alp;
alp_fade = _fade;
} #endregion
static kill = function(callDestroy = true) { #region
INLINE
active = false;
if(callDestroy && node.onPartDestroy != noone)
node.onPartDestroy(self);
} #endregion
static step = function(frame = 0) { #region
INLINE
//if(life_total > 0) print($"Step {seed}: {trailLife}");
trailLife++;
if(!active) return;
x += speedx;
self.frame = frame;
random_set_seed(seed + life);
if(ground && y + speedy > ground_y) {
y = ground_y;
speedy = -speedy * ground_bounce;
if(abs(speedy) < 0.1)
speedx *= ground_friction;
} else
y += speedy;
var dirr = point_direction(0, 0, speedx, speedy);
var diss = point_distance(0, 0, speedx, speedy);
diss = max(0, diss + accel);
if(speedx != 0 || speedy != 0) {
dirr += wig_dir.get(seed + life);
if(turning != 0) {
var trn = turning;
if(turnSpd > 0) trn = turning * diss * turnSpd;
else if(turnSpd < 0) trn = turning / diss * turnSpd;
dirr += trn
}
}
speedx = lengthdir_x(diss, dirr) + gravX;
speedy = lengthdir_y(diss, dirr) + gravY;
if(follow) rot = spVec[1];
else rot += rot_s;
if(node.onPartStep != noone && step_int > 0 && safe_mod(life, step_int) == 0)
node.onPartStep(self);
if(life-- < 0) kill();
if(prevx != undefined) {
spVec[0] = point_distance(prevx, prevy, x, y);
spVec[1] = point_direction(prevx, prevy, x, y);
}
x_history[life_incr] = drawx;
y_history[life_incr] = drawy;
life_incr++;
prevx = x;
prevy = y;
drawx = x;
drawy = y;
drawrot = rot;
drawsx = sc_sx;
drawsy = sc_sy;
drawx += wig_psx.get(seed + life);
drawy += wig_psy.get(seed + life);
drawrot += wig_rot.get(seed + life);
drawsx += wig_scy.get(seed + life);
drawsy += wig_scy.get(seed + life);
} #endregion
static draw = function(exact, surf_w, surf_h, _index = 0) { #region
INLINE
var ss = surf;
if(arr_type == 2 && surf != noone && 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) {
kill();
return;
} else
ss = surf[ind];
break;
}
} else if(arr_type == 3) ss = array_safe_get(ss, _index);
var surface = is_instanceof(ss, SurfaceAtlas)? ss.getSurface() : node.surface_cache[$ ss];
if(!is_surface(surface))
return;
var lifeRat = 1 - life / life_total;
var scCurve = sct == noone? 1 : sct.get(lifeRat);
scx = drawsx * scCurve;
scy = drawsy * scCurve;
var _xx, _yy;
var s_w = surface_get_width_safe(surface) * scx;
var s_h = surface_get_height_safe(surface) * scy;
var _pp = point_rotate(-s_w / 2, -s_h / 2, 0, 0, rot);
_xx = drawx + _pp[0];
_yy = drawy + _pp[1];
if(exact) {
_xx = round(_xx);
_yy = round(_yy);
}
var x0 = _xx - s_w * 1.5;
var y0 = _yy - s_h * 1.5;
var x1 = _xx + s_w * 1.5;
var y1 = _yy + s_h * 1.5;
if(x0 > surf_w || y0 > surf_h || x1 < 0 || y1 < 0)
return;
var cc = (col == -1)? c_white : col.eval(lifeRat);
if(blend != c_white) cc = colorMultiply(blend, cc);
alp_draw = alp * (alp_fade == noone? 1 : alp_fade.get(lifeRat));
draw_surface_ext_safe(surface, _xx, _yy, scx, scy, drawrot, cc, alp_draw);
} #endregion
static getPivot = function() { #region
INLINE
return [x, y];
} #endregion
static clone = function() { #region
var _p = new __part(node);
struct_override(_p, self);
return _p;
} #endregion
}
#region helper
#macro UPDATE_PART_FORWARD static updateParticleForward = function() { \
var pt = outputs[| 0]; \
for( var i = 0; i < ds_list_size(pt.value_to); i++ ) { \
var _n = pt.value_to[| i]; \
if(_n.value_from != pt) continue; \
\
if(variable_struct_exists(_n.node, "updateParticleForward")) \
_n.node.updateParticleForward(); \
} \
}
#endregion