Difference between revisions of "INVENTORY NONE"
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|value=-1 | |value=-1 | ||
|desc=Value returned by {{LSLGC|Inventory|Inventory}} functions, to indicate that the inventory item doesn't exist. | |desc=Value returned by {{LSLGC|Inventory|Inventory}} functions, to indicate that the inventory item doesn't exist. | ||
|examples=< | |examples=<source lang="lsl2"> | ||
string ItemName = "MyTexture"; | string ItemName = "MyTexture"; | ||
default | default | ||
| Line 13: | Line 13: | ||
llOwnerSay( "There is nothing named '" + ItemName + "' in this prim's contents"); | llOwnerSay( "There is nothing named '" + ItemName + "' in this prim's contents"); | ||
} | } | ||
}</ | }</source> | ||
|helpers=< | |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. | {//finds an item in a case insensitive fashion of the given type and returns its true name. | ||
integer a = llGetInventoryType(name); | integer a = llGetInventoryType(name); | ||
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{//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. | {//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); | return (llGetInventoryType(name) == type) ^ (!~type); | ||
}//Since INVENTORY_ALL == INVENTORY_NONE, the extra part on the end is required to invert the result.</ | }//Since INVENTORY_ALL == INVENTORY_NONE, the extra part on the end is required to invert the result.</source> | ||
|constants={{LSL DefineRow||[[INVENTORY_ALL]]|}} | |constants={{LSL DefineRow||[[INVENTORY_ALL]]|}} | ||
{{LSL DefineRow||[[INVENTORY ANIMATION]]|}} | {{LSL DefineRow||[[INVENTORY ANIMATION]]|}} | ||
| Line 49: | Line 49: | ||
{{LSL DefineRow||[[INVENTORY OBJECT]]|}} | {{LSL DefineRow||[[INVENTORY OBJECT]]|}} | ||
{{LSL DefineRow||[[INVENTORY SCRIPT]]|}} | {{LSL DefineRow||[[INVENTORY SCRIPT]]|}} | ||
{{LSL DefineRow||[[INVENTORY SETTING]]|}} | |||
{{LSL DefineRow||[[INVENTORY SOUND]]|}} | {{LSL DefineRow||[[INVENTORY SOUND]]|}} | ||
{{LSL DefineRow||[[INVENTORY TEXTURE]]|}} | {{LSL DefineRow||[[INVENTORY TEXTURE]]|}} | ||
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.