should listen from incoming messages with `minetest.register_on_modchannel_message`
call to receive incoming messages. Warning, this function is asynchronous.
+### Particles
+* `minetest.add_particle(particle definition)`
+
+* `minetest.add_particlespawner(particlespawner definition)`
+ * Add a `ParticleSpawner`, an object that spawns an amount of particles over `time` seconds
+ * Returns an `id`, and -1 if adding didn't succeed
+
+* `minetest.delete_particlespawner(id)`
+ * Delete `ParticleSpawner` with `id` (return value from `minetest.add_particlespawner`)
+
### Misc.
* `minetest.parse_json(string[, nullvalue])`: returns something
* Convert a string containing JSON data into the Lua equivalent
* `text`: Distance suffix. Can be blank.
* `number:` An integer containing the RGB value of the color used to draw the text.
* `world_pos`: World position of the waypoint.
+
+### Particle definition (`add_particle`)
+
+ {
+ pos = {x=0, y=0, z=0},
+ velocity = {x=0, y=0, z=0},
+ acceleration = {x=0, y=0, z=0},
+ -- ^ Spawn particle at pos with velocity and acceleration
+ expirationtime = 1,
+ -- ^ Disappears after expirationtime seconds
+ size = 1,
+ collisiondetection = false,
+ -- ^ collisiondetection: if true collides with physical objects
+ collision_removal = false,
+ -- ^ collision_removal: if true then particle is removed when it collides,
+ -- ^ requires collisiondetection = true to have any effect
+ vertical = false,
+ -- ^ vertical: if true faces player using y axis only
+ texture = "image.png",
+ -- ^ Uses texture (string)
+ animation = {Tile Animation definition},
+ -- ^ optional, specifies how to animate the particle texture
+ glow = 0
+ -- ^ optional, specify particle self-luminescence in darkness
+ }
+
+### `ParticleSpawner` definition (`add_particlespawner`)
+
+ {
+ amount = 1,
+ time = 1,
+ -- ^ If time is 0 has infinite lifespan and spawns the amount on a per-second base
+ minpos = {x=0, y=0, z=0},
+ maxpos = {x=0, y=0, z=0},
+ minvel = {x=0, y=0, z=0},
+ maxvel = {x=0, y=0, z=0},
+ minacc = {x=0, y=0, z=0},
+ maxacc = {x=0, y=0, z=0},
+ minexptime = 1,
+ maxexptime = 1,
+ minsize = 1,
+ maxsize = 1,
+ -- ^ The particle's properties are random values in between the bounds:
+ -- ^ minpos/maxpos, minvel/maxvel (velocity), minacc/maxacc (acceleration),
+ -- ^ minsize/maxsize, minexptime/maxexptime (expirationtime)
+ collisiondetection = false,
+ -- ^ collisiondetection: if true uses collision detection
+ collision_removal = false,
+ -- ^ collision_removal: if true then particle is removed when it collides,
+ -- ^ requires collisiondetection = true to have any effect
+ vertical = false,
+ -- ^ vertical: if true faces player using y axis only
+ texture = "image.png",
+ -- ^ Uses texture (string)
+ }
--- /dev/null
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2017 red-001 <red-001@outlook.ie>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "lua_api/l_particles_local.h"
+#include "common/c_content.h"
+#include "common/c_converter.h"
+#include "lua_api/l_internal.h"
+#include "lua_api/l_object.h"
+#include "client/particles.h"
+#include "client/client.h"
+#include "client/clientevent.h"
+
+int ModApiParticlesLocal::l_add_particle(lua_State *L)
+{
+ luaL_checktype(L, 1, LUA_TTABLE);
+
+ // Get parameters
+ v3f pos, vel, acc;
+ float expirationtime, size;
+ bool collisiondetection, vertical, collision_removal;
+
+ struct TileAnimationParams animation;
+ animation.type = TAT_NONE;
+
+ std::string texture;
+
+ u8 glow;
+
+ lua_getfield(L, 1, "pos");
+ pos = lua_istable(L, -1) ? check_v3f(L, -1) : v3f(0, 0, 0);
+ lua_pop(L, 1);
+
+ lua_getfield(L, 1, "velocity");
+ vel = lua_istable(L, -1) ? check_v3f(L, -1) : v3f(0, 0, 0);
+ lua_pop(L, 1);
+
+ lua_getfield(L, 1, "acceleration");
+ acc = lua_istable(L, -1) ? check_v3f(L, -1) : v3f(0, 0, 0);
+ lua_pop(L, 1);
+
+ expirationtime = getfloatfield_default(L, 1, "expirationtime", 1);
+ size = getfloatfield_default(L, 1, "size", 1);
+ collisiondetection = getboolfield_default(L, 1, "collisiondetection", false);
+ collision_removal = getboolfield_default(L, 1, "collision_removal", false);
+ vertical = getboolfield_default(L, 1, "vertical", false);
+
+ lua_getfield(L, 1, "animation");
+ animation = read_animation_definition(L, -1);
+ lua_pop(L, 1);
+
+ texture = getstringfield_default(L, 1, "texture", "");
+
+ glow = getintfield_default(L, 1, "glow", 0);
+
+ ClientEvent *event = new ClientEvent();
+ event->type = CE_SPAWN_PARTICLE;
+ event->spawn_particle.pos = new v3f (pos);
+ event->spawn_particle.vel = new v3f (vel);
+ event->spawn_particle.acc = new v3f (acc);
+ event->spawn_particle.expirationtime = expirationtime;
+ event->spawn_particle.size = size;
+ event->spawn_particle.collisiondetection = collisiondetection;
+ event->spawn_particle.collision_removal = collision_removal;
+ event->spawn_particle.vertical = vertical;
+ event->spawn_particle.texture = new std::string(texture);
+ event->spawn_particle.animation = animation;
+ event->spawn_particle.glow = glow;
+ getClient(L)->pushToEventQueue(event);
+
+ return 0;
+}
+
+int ModApiParticlesLocal::l_add_particlespawner(lua_State *L)
+{
+ luaL_checktype(L, 1, LUA_TTABLE);
+ // Get parameters
+ u16 amount;
+ v3f minpos, maxpos, minvel, maxvel, minacc, maxacc;
+ float time, minexptime, maxexptime, minsize, maxsize;
+ bool collisiondetection, vertical, collision_removal;
+
+ struct TileAnimationParams animation;
+ animation.type = TAT_NONE;
+ // TODO: Implement this when there is a way to get an objectref.
+ // ServerActiveObject *attached = NULL;
+ std::string texture;
+ u8 glow;
+
+ amount = getintfield_default(L, 1, "amount", 1);
+ time = getfloatfield_default(L, 1, "time", 1);
+
+ lua_getfield(L, 1, "minpos");
+ minpos = lua_istable(L, -1) ? check_v3f(L, -1) : v3f(0, 0, 0);
+ lua_pop(L, 1);
+
+ lua_getfield(L, 1, "maxpos");
+ maxpos = lua_istable(L, -1) ? check_v3f(L, -1) : v3f(0, 0, 0);
+ lua_pop(L, 1);
+
+ lua_getfield(L, 1, "minvel");
+ minvel = lua_istable(L, -1) ? check_v3f(L, -1) : v3f(0, 0, 0);
+ lua_pop(L, 1);
+
+ lua_getfield(L, 1, "maxvel");
+ maxvel = lua_istable(L, -1) ? check_v3f(L, -1) : v3f(0, 0, 0);
+ lua_pop(L, 1);
+
+ lua_getfield(L, 1, "minacc");
+ minacc = lua_istable(L, -1) ? check_v3f(L, -1) : v3f(0, 0, 0);
+ lua_pop(L, 1);
+
+ lua_getfield(L, 1, "maxacc");
+ maxacc = lua_istable(L, -1) ? check_v3f(L, -1) : v3f(0, 0, 0);
+ lua_pop(L, 1);
+
+ minexptime = getfloatfield_default(L, 1, "minexptime", 1);
+ maxexptime = getfloatfield_default(L, 1, "maxexptime", 1);
+ minsize = getfloatfield_default(L, 1, "minsize", 1);
+ maxsize = getfloatfield_default(L, 1, "maxsize", 1);
+
+ collisiondetection = getboolfield_default(L, 1, "collisiondetection", false);
+ collision_removal = getboolfield_default(L, 1, "collision_removal", false);
+ vertical = getboolfield_default(L, 1, "vertical", false);
+
+ lua_getfield(L, 1, "animation");
+ animation = read_animation_definition(L, -1);
+ lua_pop(L, 1);
+
+ // TODO: Implement this when a way to get an objectref on the client is added
+// lua_getfield(L, 1, "attached");
+// if (!lua_isnil(L, -1)) {
+// ObjectRef *ref = ObjectRef::checkobject(L, -1);
+// lua_pop(L, 1);
+// attached = ObjectRef::getobject(ref);
+// }
+
+ texture = getstringfield_default(L, 1, "texture", "");
+ glow = getintfield_default(L, 1, "glow", 0);
+
+ u32 id = getClient(L)->getParticleManager()->getSpawnerId();
+
+ ClientEvent *event = new ClientEvent();
+ event->type = CE_ADD_PARTICLESPAWNER;
+ event->add_particlespawner.amount = amount;
+ event->add_particlespawner.spawntime = time;
+ event->add_particlespawner.minpos = new v3f (minpos);
+ event->add_particlespawner.maxpos = new v3f (maxpos);
+ event->add_particlespawner.minvel = new v3f (minvel);
+ event->add_particlespawner.maxvel = new v3f (maxvel);
+ event->add_particlespawner.minacc = new v3f (minacc);
+ event->add_particlespawner.maxacc = new v3f (maxacc);
+ event->add_particlespawner.minexptime = minexptime;
+ event->add_particlespawner.maxexptime = maxexptime;
+ event->add_particlespawner.minsize = minsize;
+ event->add_particlespawner.maxsize = maxsize;
+ event->add_particlespawner.collisiondetection = collisiondetection;
+ event->add_particlespawner.collision_removal = collision_removal;
+ event->add_particlespawner.attached_id = 0;
+ event->add_particlespawner.vertical = vertical;
+ event->add_particlespawner.texture = new std::string(texture);
+ event->add_particlespawner.id = id;
+ event->add_particlespawner.animation = animation;
+ event->add_particlespawner.glow = glow;
+
+ getClient(L)->pushToEventQueue(event);
+ lua_pushnumber(L, id);
+
+ return 1;
+}
+
+int ModApiParticlesLocal::l_delete_particlespawner(lua_State *L)
+{
+ // Get parameters
+ u32 id = luaL_checknumber(L, 1);
+
+ ClientEvent *event = new ClientEvent();
+ event->type = CE_DELETE_PARTICLESPAWNER;
+ event->delete_particlespawner.id = id;
+
+ getClient(L)->pushToEventQueue(event);
+ return 0;
+}
+
+void ModApiParticlesLocal::Initialize(lua_State *L, int top)
+{
+ API_FCT(add_particle);
+ API_FCT(add_particlespawner);
+ API_FCT(delete_particlespawner);
+}
projects / oweals / minetest.git / commitdiff