1 files changed, 322 insertions, 0 deletions
diff --git a/src/scriptapi_content.cpp b/src/scriptapi_content.cpp
new file mode 100644
index 000000000..3b7ed5179
--- /dev/null
+++ b/src/scriptapi_content.cpp
@@ -0,0 +1,322 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+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 "scriptapi.h"
+#include "scriptapi_content.h"
+#include "scriptapi_types.h"
+#include "scriptapi_common.h"
+#include "scriptapi_node.h"
+
+
+NodeBox read_nodebox(lua_State *L, int index)
+{
+	NodeBox nodebox;
+	if(lua_istable(L, -1)){
+		nodebox.type = (NodeBoxType)getenumfield(L, index, "type",
+				es_NodeBoxType, NODEBOX_REGULAR);
+
+		lua_getfield(L, index, "fixed");
+		if(lua_istable(L, -1))
+			nodebox.fixed = read_aabb3f_vector(L, -1, BS);
+		lua_pop(L, 1);
+
+		lua_getfield(L, index, "wall_top");
+		if(lua_istable(L, -1))
+			nodebox.wall_top = read_aabb3f(L, -1, BS);
+		lua_pop(L, 1);
+
+		lua_getfield(L, index, "wall_bottom");
+		if(lua_istable(L, -1))
+			nodebox.wall_bottom = read_aabb3f(L, -1, BS);
+		lua_pop(L, 1);
+
+		lua_getfield(L, index, "wall_side");
+		if(lua_istable(L, -1))
+			nodebox.wall_side = read_aabb3f(L, -1, BS);
+		lua_pop(L, 1);
+	}
+	return nodebox;
+}
+
+/*
+	SimpleSoundSpec
+*/
+
+void read_soundspec(lua_State *L, int index, SimpleSoundSpec &spec)
+{
+	if(index < 0)
+		index = lua_gettop(L) + 1 + index;
+	if(lua_isnil(L, index)){
+	} else if(lua_istable(L, index)){
+		getstringfield(L, index, "name", spec.name);
+		getfloatfield(L, index, "gain", spec.gain);
+	} else if(lua_isstring(L, index)){
+		spec.name = lua_tostring(L, index);
+	}
+}
+
+struct EnumString es_TileAnimationType[] =
+{
+	{TAT_NONE, "none"},
+	{TAT_VERTICAL_FRAMES, "vertical_frames"},
+	{0, NULL},
+};
+
+/*
+	TileDef
+*/
+
+TileDef read_tiledef(lua_State *L, int index)
+{
+	if(index < 0)
+		index = lua_gettop(L) + 1 + index;
+
+	TileDef tiledef;
+
+	// key at index -2 and value at index
+	if(lua_isstring(L, index)){
+		// "default_lava.png"
+		tiledef.name = lua_tostring(L, index);
+	}
+	else if(lua_istable(L, index))
+	{
+		// {name="default_lava.png", animation={}}
+		tiledef.name = "";
+		getstringfield(L, index, "name", tiledef.name);
+		getstringfield(L, index, "image", tiledef.name); // MaterialSpec compat.
+		tiledef.backface_culling = getboolfield_default(
+					L, index, "backface_culling", true);
+		// animation = {}
+		lua_getfield(L, index, "animation");
+		if(lua_istable(L, -1)){
+			// {type="vertical_frames", aspect_w=16, aspect_h=16, length=2.0}
+			tiledef.animation.type = (TileAnimationType)
+					getenumfield(L, -1, "type", es_TileAnimationType,
+					TAT_NONE);
+			tiledef.animation.aspect_w =
+					getintfield_default(L, -1, "aspect_w", 16);
+			tiledef.animation.aspect_h =
+					getintfield_default(L, -1, "aspect_h", 16);
+			tiledef.animation.length =
+					getfloatfield_default(L, -1, "length", 1.0);
+		}
+		lua_pop(L, 1);
+	}
+
+	return tiledef;
+}
+
+/*
+	ContentFeatures
+*/
+
+ContentFeatures read_content_features(lua_State *L, int index)
+{
+	if(index < 0)
+		index = lua_gettop(L) + 1 + index;
+
+	ContentFeatures f;
+
+	/* Cache existence of some callbacks */
+	lua_getfield(L, index, "on_construct");
+	if(!lua_isnil(L, -1)) f.has_on_construct = true;
+	lua_pop(L, 1);
+	lua_getfield(L, index, "on_destruct");
+	if(!lua_isnil(L, -1)) f.has_on_destruct = true;
+	lua_pop(L, 1);
+	lua_getfield(L, index, "after_destruct");
+	if(!lua_isnil(L, -1)) f.has_after_destruct = true;
+	lua_pop(L, 1);
+
+	lua_getfield(L, index, "on_rightclick");
+	f.rightclickable = lua_isfunction(L, -1);
+	lua_pop(L, 1);
+	
+	/* Name */
+	getstringfield(L, index, "name", f.name);
+
+	/* Groups */
+	lua_getfield(L, index, "groups");
+	read_groups(L, -1, f.groups);
+	lua_pop(L, 1);
+
+	/* Visual definition */
+
+	f.drawtype = (NodeDrawType)getenumfield(L, index, "drawtype", es_DrawType,
+			NDT_NORMAL);
+	getfloatfield(L, index, "visual_scale", f.visual_scale);
+
+	// tiles = {}
+	lua_getfield(L, index, "tiles");
+	// If nil, try the deprecated name "tile_images" instead
+	if(lua_isnil(L, -1)){
+		lua_pop(L, 1);
+		warn_if_field_exists(L, index, "tile_images",
+				"Deprecated; new name is \"tiles\".");
+		lua_getfield(L, index, "tile_images");
+	}
+	if(lua_istable(L, -1)){
+		int table = lua_gettop(L);
+		lua_pushnil(L);
+		int i = 0;
+		while(lua_next(L, table) != 0){
+			// Read tiledef from value
+			f.tiledef[i] = read_tiledef(L, -1);
+			// removes value, keeps key for next iteration
+			lua_pop(L, 1);
+			i++;
+			if(i==6){
+				lua_pop(L, 1);
+				break;
+			}
+		}
+		// Copy last value to all remaining textures
+		if(i >= 1){
+			TileDef lasttile = f.tiledef[i-1];
+			while(i < 6){
+				f.tiledef[i] = lasttile;
+				i++;
+			}
+		}
+	}
+	lua_pop(L, 1);
+
+	// special_tiles = {}
+	lua_getfield(L, index, "special_tiles");
+	// If nil, try the deprecated name "special_materials" instead
+	if(lua_isnil(L, -1)){
+		lua_pop(L, 1);
+		warn_if_field_exists(L, index, "special_materials",
+				"Deprecated; new name is \"special_tiles\".");
+		lua_getfield(L, index, "special_materials");
+	}
+	if(lua_istable(L, -1)){
+		int table = lua_gettop(L);
+		lua_pushnil(L);
+		int i = 0;
+		while(lua_next(L, table) != 0){
+			// Read tiledef from value
+			f.tiledef_special[i] = read_tiledef(L, -1);
+			// removes value, keeps key for next iteration
+			lua_pop(L, 1);
+			i++;
+			if(i==6){
+				lua_pop(L, 1);
+				break;
+			}
+		}
+	}
+	lua_pop(L, 1);
+
+	f.alpha = getintfield_default(L, index, "alpha", 255);
+
+	/* Other stuff */
+
+	lua_getfield(L, index, "post_effect_color");
+	if(!lua_isnil(L, -1))
+		f.post_effect_color = readARGB8(L, -1);
+	lua_pop(L, 1);
+
+	f.param_type = (ContentParamType)getenumfield(L, index, "paramtype",
+			es_ContentParamType, CPT_NONE);
+	f.param_type_2 = (ContentParamType2)getenumfield(L, index, "paramtype2",
+			es_ContentParamType2, CPT2_NONE);
+
+	// Warn about some deprecated fields
+	warn_if_field_exists(L, index, "wall_mounted",
+			"deprecated: use paramtype2 = 'wallmounted'");
+	warn_if_field_exists(L, index, "light_propagates",
+			"deprecated: determined from paramtype");
+	warn_if_field_exists(L, index, "dug_item",
+			"deprecated: use 'drop' field");
+	warn_if_field_exists(L, index, "extra_dug_item",
+			"deprecated: use 'drop' field");
+	warn_if_field_exists(L, index, "extra_dug_item_rarity",
+			"deprecated: use 'drop' field");
+	warn_if_field_exists(L, index, "metadata_name",
+			"deprecated: use on_add and metadata callbacks");
+
+	// True for all ground-like things like stone and mud, false for eg. trees
+	getboolfield(L, index, "is_ground_content", f.is_ground_content);
+	f.light_propagates = (f.param_type == CPT_LIGHT);
+	getboolfield(L, index, "sunlight_propagates", f.sunlight_propagates);
+	// This is used for collision detection.
+	// Also for general solidness queries.
+	getboolfield(L, index, "walkable", f.walkable);
+	// Player can point to these
+	getboolfield(L, index, "pointable", f.pointable);
+	// Player can dig these
+	getboolfield(L, index, "diggable", f.diggable);
+	// Player can climb these
+	getboolfield(L, index, "climbable", f.climbable);
+	// Player can build on these
+	getboolfield(L, index, "buildable_to", f.buildable_to);
+	// Whether the node is non-liquid, source liquid or flowing liquid
+	f.liquid_type = (LiquidType)getenumfield(L, index, "liquidtype",
+			es_LiquidType, LIQUID_NONE);
+	// If the content is liquid, this is the flowing version of the liquid.
+	getstringfield(L, index, "liquid_alternative_flowing",
+			f.liquid_alternative_flowing);
+	// If the content is liquid, this is the source version of the liquid.
+	getstringfield(L, index, "liquid_alternative_source",
+			f.liquid_alternative_source);
+	// Viscosity for fluid flow, ranging from 1 to 7, with
+	// 1 giving almost instantaneous propagation and 7 being
+	// the slowest possible
+	f.liquid_viscosity = getintfield_default(L, index,
+			"liquid_viscosity", f.liquid_viscosity);
+	getboolfield(L, index, "liquid_renewable", f.liquid_renewable);
+	// Amount of light the node emits
+	f.light_source = getintfield_default(L, index,
+			"light_source", f.light_source);
+	f.damage_per_second = getintfield_default(L, index,
+			"damage_per_second", f.damage_per_second);
+
+	lua_getfield(L, index, "node_box");
+	if(lua_istable(L, -1))
+		f.node_box = read_nodebox(L, -1);
+	lua_pop(L, 1);
+
+	lua_getfield(L, index, "selection_box");
+	if(lua_istable(L, -1))
+		f.selection_box = read_nodebox(L, -1);
+ 	lua_pop(L, 1);
+
+	// Set to true if paramtype used to be 'facedir_simple'
+	getboolfield(L, index, "legacy_facedir_simple", f.legacy_facedir_simple);
+	// Set to true if wall_mounted used to be set to true
+	getboolfield(L, index, "legacy_wallmounted", f.legacy_wallmounted);
+
+	// Sound table
+	lua_getfield(L, index, "sounds");
+	if(lua_istable(L, -1)){
+		lua_getfield(L, -1, "footstep");
+		read_soundspec(L, -1, f.sound_footstep);
+		lua_pop(L, 1);
+		lua_getfield(L, -1, "dig");
+		read_soundspec(L, -1, f.sound_dig);
+		lua_pop(L, 1);
+		lua_getfield(L, -1, "dug");
+		read_soundspec(L, -1, f.sound_dug);
+		lua_pop(L, 1);
+	}
+	lua_pop(L, 1);
+
+	return f;
+}