From 1f54a2f8f336507f5cad2035019deb99b92d0aea Mon Sep 17 00:00:00 2001 From: Dejvino Date: Sun, 11 Aug 2024 21:45:40 +0200 Subject: [PATCH] moonbus: particles --- moonbus.p8 | 131 +++++++++++++++++++++++++++++++++-------------------- 1 file changed, 81 insertions(+), 50 deletions(-) diff --git a/moonbus.p8 b/moonbus.p8 index ea78987..3b22d63 100644 --- a/moonbus.p8 +++ b/moonbus.p8 @@ -62,6 +62,8 @@ function load_level() plr_pos=find_random_point_by_flag(1) telem_spd={} + particles={} + next_target() end @@ -128,6 +130,7 @@ function _update() if plr_engine != -1 then sfx(2,2) plr_fuel=max(0,min(1,plr_fuel-fuel_cons)) + generate_particle(plr_pos) else sfx(-1,2) end @@ -157,6 +160,14 @@ function _update() plr_speed.y-=gravity end + -- particles + for i,part in pairs(particles) do + part.spd.y-=gravity/5 + move(part.p,part.spd,0.1) + part.age=max(0,part.age)+1 + if (part.age >= part.limit) then del(particles,part) end + end + -- crash detection local pc=plus(plr_pos,{x=0.5,y=-0.5}) local crashed=false @@ -196,8 +207,10 @@ function _update() plr_speed.x*=0.5 plr_alive=false if (dist(plr_speed) > 1) then + for i=1,10 do generate_particle() end sfx(0) else + for i=1,20 do generate_particle() end plr_speed.x=0 plr_speed.y=0 plr_static=true @@ -258,6 +271,14 @@ function _draw() pset(px,py,8) end + for part in all(particles) do + local p=part.p + local px,py=to_scrn(p) + --pset(px,py,ttl > 10 and 8 or 5) + circ(px,py,cos(part.age/20)*0.6+1.5,part.age < 10 and 8 or (part.age < part.limit/2 and 5 or 1)) + end + print(#particles, 32,50,11) + -- target if plr_alive then local tg={x=plr_target.x,y=plr_target.y} @@ -384,6 +405,15 @@ function next_target() plr_target={x=mp.x,y=maph-mp.y+1} end +function generate_particle() + add(particles,{ + p=plus(plus(plr_pos,{x=0.25,y=-0.85}),{x=rnd(),y=rnd()},0.5), + spd=plus(mul({x=rnd(2)-1,y=rnd(2)-1},0.1),mul(plr_speed,rnd(0.5))), + age=rnd(20), + limit=80+flr(rnd(40)) + }) +end + function to_scrn(p) local x=p.x*8 local y=128-p.y*8 @@ 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