Add particle animation, glow

This is implemented by reusing and extending the
TileAnimation code for the methods used by particles.

2 files changed, 38 insertions, 23 deletions

diff --git a/src/script/common/c_content.cpp b/src/script/common/c_content.cpp
index b9bcfef69..84af4583b 100644
--- a/src/script/common/c_content.cpp
+++ b/src/script/common/c_content.cpp
@@ -322,7 +322,7 @@ TileDef read_tiledef(lua_State *L, int index, u8 drawtype)
 	}
 	else if(lua_istable(L, index))
 	{
-		// {name="default_lava.png", animation={}}
+		// name="default_lava.png"
 		tiledef.name = "";
 		getstringfield(L, index, "name", tiledef.name);
 		getstringfield(L, index, "image", tiledef.name); // MaterialSpec compat.
@@ -334,28 +334,7 @@ TileDef read_tiledef(lua_State *L, int index, u8 drawtype)
 			L, index, "tileable_vertical", default_tiling);
 		// animation = {}
 		lua_getfield(L, index, "animation");
-		if(lua_istable(L, -1)){
-			tiledef.animation.type = (TileAnimationType)
-				getenumfield(L, -1, "type", es_TileAnimationType,
-				TAT_NONE);
-			if (tiledef.animation.type == TAT_VERTICAL_FRAMES) {
-				// {type="vertical_frames", aspect_w=16, aspect_h=16, length=2.0}
-				tiledef.animation.vertical_frames.aspect_w =
-					getintfield_default(L, -1, "aspect_w", 16);
-				tiledef.animation.vertical_frames.aspect_h =
-					getintfield_default(L, -1, "aspect_h", 16);
-				tiledef.animation.vertical_frames.length =
-					getfloatfield_default(L, -1, "length", 1.0);
-			} else if (tiledef.animation.type == TAT_SHEET_2D) {
-				// {type="sheet_2d", frames_w=5, frames_h=3, frame_length=0.5}
-				getintfield(L, -1, "frames_w",
-					tiledef.animation.sheet_2d.frames_w);
-				getintfield(L, -1, "frames_h",
-					tiledef.animation.sheet_2d.frames_h);
-				getfloatfield(L, -1, "frame_length",
-					tiledef.animation.sheet_2d.frame_length);
-			}
-		}
+		tiledef.animation = read_animation_definition(L, -1);
 		lua_pop(L, 1);
 	}
 
@@ -926,6 +905,41 @@ void read_inventory_list(lua_State *L, int tableindex,
 }
 
 /******************************************************************************/
+struct TileAnimationParams read_animation_definition(lua_State *L, int index)
+{
+	if(index < 0)
+		index = lua_gettop(L) + 1 + index;
+
+	struct TileAnimationParams anim;
+	anim.type = TAT_NONE;
+	if (!lua_istable(L, index))
+		return anim;
+
+	anim.type = (TileAnimationType)
+		getenumfield(L, index, "type", es_TileAnimationType,
+		TAT_NONE);
+	if (anim.type == TAT_VERTICAL_FRAMES) {
+		// {type="vertical_frames", aspect_w=16, aspect_h=16, length=2.0}
+		anim.vertical_frames.aspect_w =
+			getintfield_default(L, index, "aspect_w", 16);
+		anim.vertical_frames.aspect_h =
+			getintfield_default(L, index, "aspect_h", 16);
+		anim.vertical_frames.length =
+			getfloatfield_default(L, index, "length", 1.0);
+	} else if (anim.type == TAT_SHEET_2D) {
+		// {type="sheet_2d", frames_w=5, frames_h=3, frame_length=0.5}
+		getintfield(L, index, "frames_w",
+			anim.sheet_2d.frames_w);
+		getintfield(L, index, "frames_h",
+			anim.sheet_2d.frames_h);
+		getfloatfield(L, index, "frame_length",
+			anim.sheet_2d.frame_length);
+	}
+
+	return anim;
+}
+
+/******************************************************************************/
 ToolCapabilities read_tool_capabilities(
 		lua_State *L, int table)
 {
diff --git a/src/script/common/c_content.h b/src/script/common/c_content.h
index 2a2228b6d..9641f5c9e 100644
--- a/src/script/common/c_content.h
+++ b/src/script/common/c_content.h
@@ -79,6 +79,7 @@ void               push_hit_params           (lua_State *L,
 
 ItemStack          read_item                 (lua_State *L, int index, Server *srv);
 
+struct TileAnimationParams read_animation_definition(lua_State *L, int index);
 
 ToolCapabilities   read_tool_capabilities    (lua_State *L, int table);
 void               push_tool_capabilities    (lua_State *L,