Particles fixup

doc/lua_api.txt

@@ -310,6 +310,10 @@ param2 is reserved for the engine when any of these are used:
   paramtype2 == "facedir"
   ^ The rotation of the node is stored in param2. Furnaces and chests are
     rotated this way. Can be made by using minetest.dir_to_facedir().
+    Values range 0 - 23
+    facedir modulo 4 = axisdir
+    0 = y+    1 = z+    2 = z-    3 = x+    4 = x-    5 = y-
+    facedir's two less significant bits are rotation around the axis
 
 Nodes can also contain extra data. See "Node Metadata".
 
@@ -586,11 +590,11 @@ maximum level.
 Example definition of the capabilities of a tool
 -------------------------------------------------
 tool_capabilities = {
-    full_punch_interval=1.5,
-    max_drop_level=1,
-    groupcaps={
-        crumbly={maxlevel=2, uses=20, times={[1]=1.60, [2]=1.20, [3]=0.80}}
-    }
+	full_punch_interval=1.5,
+	max_drop_level=1,
+	groupcaps={
+		crumbly={maxlevel=2, uses=20, times={[1]=1.60, [2]=1.20, [3]=0.80}}
+	}
 }
 
 This makes the tool be able to dig nodes that fullfill both of these:
@@ -1024,6 +1028,37 @@ minetest.get_ban_description(ip_or_name) -> ban description (string)
 minetest.ban_player(name) -> ban a player
 minetest.unban_player_or_ip(name) -> unban player or IP address
 
+Particles:
+minetest.add_particle(pos, velocity, acceleration, expirationtime,
+	size, collisiondetection, texture, playername)
+^ Spawn particle at pos with velocity and acceleration
+^ Disappears after expirationtime seconds
+^ collisiondetection: if true collides with physical objects
+^ Uses texture (string)
+^ Playername is optional, if specified spawns particle only on the player's client
+
+minetest.add_particlespawner(amount, time,
+	minpos, maxpos,
+	minvel, maxvel,
+	minacc, maxacc,
+	minexptime, maxexptime,
+	minsize, maxsize,
+	collisiondetection, texture, playername)
+^ Add a particlespawner, an object that spawns an amount of particles over time seconds
+^ The particle's properties are random values in between the boundings:
+^ minpos/maxpos, minvel/maxvel (velocity), minacc/maxacc (acceleration),
+^ minsize/maxsize, minexptime/maxexptime (expirationtime)
+^ collisiondetection: if true uses collisiondetection
+^ Uses texture (string)
+^ Playername is optional, if specified spawns particle only on the player's client
+^ If time is 0 has infinite lifespan and spawns the amount on a per-second base
+^ Returns and id
+
+minetest.delete_particlespawner(id, player)
+^ Delete ParticleSpawner with id (return value from add_particlespawner)
+^ If playername is specified, only deletes on the player's client,
+^ otherwise on all clients
+
 Random:
 minetest.get_connected_players() -> list of ObjectRefs
 minetest.hash_node_position({x=,y=,z=}) -> 48-bit integer

src/particles.cpp

@@ -167,7 +167,7 @@ void Particle::step(float dtime, ClientEnvironment &env)
 		v3f p_pos = m_pos*BS;
 		v3f p_velocity = m_velocity*BS;
 		v3f p_acceleration = m_acceleration*BS;
-		collisionMoveSimple(&env.getClientMap(), m_gamedef,
+		collisionMoveSimple(&env, m_gamedef,
 			BS*0.5, box,
 			0, dtime,
 			p_pos, p_velocity, p_acceleration);