Add playereffects.has_effect_type

2 files changed, 19 insertions, 0 deletions

diff --git a/README.md b/README.md
index 2e79e6c..54b18f2 100644
--- a/README.md
+++ b/README.md
@@ -192,6 +192,13 @@ Returns all active effects of a player.
 ##### Return value
 A table of all `effect`s which belong to the player. If the player does not exist, this function returns an empty table.
 
+#### `playereffects.has_effect_type(playername, effect_type_id)`
+Returns `true` iff the provided player has an effect of the specified effect type, `false` otherwise.
+
+##### Parameters
+* `playername`: Name of the player to check the existance of the effect type for
+* `effect_type_id`: Identifier of the effect type.
+
 ## Examples
 This mod comes with extensive examples. The examples are disabled by default. Edit `settings.lua` to enable the examples. See `examples.lua` to find out how they are programmed. The examples are only for demonstration purposes. They are not intended to be used in an actual game.
 
@@ -216,3 +223,5 @@ These commands apply (or try to) apply an effect to you. You will get a response
 
 #### Testing
 * `stresstest [number]`: Applies `number` dummy effects which don’t do anything to you. Iff omitted, `number` is assumed to be 100. This command is there to test the performance of this mod for absurdly large effect numbers.
+
+
diff --git a/init.lua b/init.lua
index c97216e..d62d239 100644
--- a/init.lua
+++ b/init.lua
@@ -297,6 +297,16 @@ function playereffects.get_player_effects(playername)
 	end
 end
 
+function playereffects.has_effect_type(playername, effect_type_id)
+	local pe = playereffects.get_player_effects(playername)
+	for i=1,#pe do
+		if pe[i].effect_type_id == effect_type_id then
+			return true
+		end
+	end
+	return false
+end
+
 --[=[ Saving all data to file ]=]
 function playereffects.save_to_file()
 	local save_time = os.time()