Difference between revisions of "INVENTORY NONE"
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{{LSL Constant | {{LSL Constant | ||
|name=INVENTORY_NONE | |name=INVENTORY_NONE | ||
|type=integer | |type=integer | ||
|value=-1 | |value=-1 | ||
|desc | |desc=Value returned by {{LSLGC|Inventory|Inventory}} functions, to indicate that the inventory item doesn't exist. | ||
|examples | |examples=<source lang="lsl2"> | ||
|constants={{LSL DefineRow | string ItemName = "MyTexture"; | ||
|functions={{LSL DefineRow | default | ||
{{LSL DefineRow | { | ||
{{LSL DefineRow | state_entry() | ||
{ | |||
if (llGetInventoryType(ItemName) == INVENTORY_NONE) | |||
llOwnerSay( "There is nothing named '" + ItemName + "' in this prim's contents"); | |||
} | |||
}</source> | |||
|helpers=<source lang="lsl2">string InventoryName(string name, integer type) | |||
{//finds an item in a case insensitive fashion of the given type and returns its true name. | |||
integer a = llGetInventoryType(name); | |||
if(!~a)//a == INVENTORY_NONE | |||
{//it should be noted that INVENTORY_NONE == INVENTORY_ALL == -1; which is why '!~a' works. | |||
string lc_name = llToLower(name); | |||
a = llGetInventoryNumber(type); | |||
while(a) | |||
{//(a = ~-a) is equivalent to --a, but runs faster. | |||
if(llToLower(name = llGetInventoryName(type, a = ~-a)) == lc_name) | |||
{//we found a match ^_^ | |||
return name; | |||
} | |||
} | |||
} | |||
else if((a == type) ^ (!~type))//return name, as long as a == type or type == INVENTORY_ALL | |||
{//we already know that a != INVENTORY_NONE, but just in case we use xor instead of or. | |||
return name; | |||
} | |||
return "";//no match ~_~ | |||
} | |||
integer InventoryExists(string name, integer type) | |||
{//only included to show how this type of check could be done if the value of 'type' is not constant and could be INVENTORY_ALL. | |||
return (llGetInventoryType(name) == type) ^ (!~type); | |||
}//Since INVENTORY_ALL == INVENTORY_NONE, the extra part on the end is required to invert the result.</source> | |||
|constants={{LSL DefineRow||[[INVENTORY_ALL]]|}} | |||
{{LSL DefineRow||[[INVENTORY ANIMATION]]|}} | |||
{{LSL DefineRow||[[INVENTORY BODYPART]]|}} | |||
{{LSL DefineRow||[[INVENTORY CLOTHING]]|}} | |||
{{LSL DefineRow||[[INVENTORY GESTURE]]|}} | |||
{{LSL DefineRow||[[INVENTORY LANDMARK]]|}} | |||
{{LSL DefineRow||[[INVENTORY NOTECARD]]|}} | |||
{{LSL DefineRow||[[INVENTORY OBJECT]]|}} | |||
{{LSL DefineRow||[[INVENTORY SCRIPT]]|}} | |||
{{LSL DefineRow||[[INVENTORY SETTING]]|}} | |||
{{LSL DefineRow||[[INVENTORY SOUND]]|}} | |||
{{LSL DefineRow||[[INVENTORY TEXTURE]]|}} | |||
|functions={{LSL DefineRow||[[llGetInventoryType]]|}} | |||
{{LSL DefineRow||[[llGetInventoryNumber]]|}} | |||
{{LSL DefineRow||[[llGetInventoryName]]|}} | |||
|events | |events | ||
|cat1=Inventory | |cat1=Inventory | ||
Latest revision as of 11:24, 1 February 2019
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Description
Constant: integer INVENTORY_NONE = -1;The integer constant INVENTORY_NONE has the value -1
Value returned by Inventory functions, to indicate that the inventory item doesn't exist.
Caveats
Related Articles
Constants
Functions
| • | llGetInventoryType | |||
| • | llGetInventoryNumber | |||
| • | llGetInventoryName |
Examples
string ItemName = "MyTexture";
default
{
state_entry()
{
if (llGetInventoryType(ItemName) == INVENTORY_NONE)
llOwnerSay( "There is nothing named '" + ItemName + "' in this prim's contents");
}
}
Useful Snippets
string InventoryName(string name, integer type)
{//finds an item in a case insensitive fashion of the given type and returns its true name.
integer a = llGetInventoryType(name);
if(!~a)//a == INVENTORY_NONE
{//it should be noted that INVENTORY_NONE == INVENTORY_ALL == -1; which is why '!~a' works.
string lc_name = llToLower(name);
a = llGetInventoryNumber(type);
while(a)
{//(a = ~-a) is equivalent to --a, but runs faster.
if(llToLower(name = llGetInventoryName(type, a = ~-a)) == lc_name)
{//we found a match ^_^
return name;
}
}
}
else if((a == type) ^ (!~type))//return name, as long as a == type or type == INVENTORY_ALL
{//we already know that a != INVENTORY_NONE, but just in case we use xor instead of or.
return name;
}
return "";//no match ~_~
}
integer InventoryExists(string name, integer type)
{//only included to show how this type of check could be done if the value of 'type' is not constant and could be INVENTORY_ALL.
return (llGetInventoryType(name) == type) ^ (!~type);
}//Since INVENTORY_ALL == INVENTORY_NONE, the extra part on the end is required to invert the result.