[vc_row][vc_column][vc_column_text]<\/p>\n
N3DSE is a dynamic linked library made up of a compiler and a virtual machine. Programming in N3D Script (N3DS) should not be too difficult for C++ programmers as this is similar to programming in C++ using only static classes.<\/p>\n
Here are some properties of N3DSE:<\/p>\n
The following diagram sums up the way N3DSE works.[\/vc_column_text][vc_single_image image=”544″ img_size=”large” alignment=”center”][vc_column_text]<\/p>\n
A script is associated with a file. This means that there can only be one script per file (like in java). A script is like a static class in C++. Each script has its name and each name must be unique. The script name \u201cSystem\u201d is reserved.<\/p>\n
Here is the syntax to write a script :<\/p>\n
script <\/span>script_name\n{\n #code of the script#\n}\n<\/pre>\n<\/div>\nNB: comments are inside \u201cdiesis brackets\u201d<\/p>\n
Declaring variables<\/h3>\n
There are 4 primitive types in N3DS. They are exactly the same as the associated C types<\/p>\n
\n- Double<\/li>\n
- Integer<\/li>\n
- Bool<\/li>\n
- Char<\/li>\n<\/ul>\n
N3DS also enables the use of arrays of these primitive types.<\/p>\n
Variable declarations and initializations are done using the keyword declare<\/b>:<\/p>\n\n declare bool <\/span> condition = false;\n declare double <\/span> variable;\n declare int <\/span> array = new<\/span> [10];\n<\/pre>\n<\/div>\nNB: simple variables needn\u2019t to be initialized while arrays must be initialized with there size.<\/p>\n
Operations on expressions and assignments<\/h3>\n
The operations on expressions are similar to C\/C++ operations (+, – , *, \/)<\/p>\n
NB: strings (arrays of chars) can be concatenated with any other expression using the<\/p>\n
+ operator.<\/p>\n
Assignments are made using the keyword set<\/b>:<\/p>\n\nset<\/span> myVar = 2*array[2];\n<\/pre>\n<\/div>\n <\/p>\n
Declaring functions<\/h3>\n
Functions are declared exactly like in C programming.<\/p>\n
Ex:<\/p>\n
\nint<\/span> inc(int<\/span> var1)\n{\n return<\/span> var1 + 1;\n}\n<\/pre>\n<\/div>\nN3DS also enables the use of references thanks to the keyword ref<\/b><\/p>\n
Ex:<\/p>\n
\nvoid<\/span> inc(ref<\/span> int<\/span> var1)\n{\n set<\/span> var1 = var1 + 1;\n}\n<\/pre>\n<\/div>\nCalling functions<\/h3>\n
Function calls are made using the keyword call.<\/b><\/p>\n
In any case you must specify the name of the script in which the function was declared<\/p>\n
\nset<\/span> myVar = 5* call<\/span> script_name.Func_name(param1);\n<\/pre>\n<\/div>\nIf the reference on a variable is required, you must use the keyword ref<\/b><\/p>\n
call<\/span> script_name.Func_name2(ref param1);
\nNB: Every function of any script can be called by the user. The dll provides methods to set the arguments of the function and then to call it.<\/p>\nSystem\/Extern functions<\/h3>\n
System\/extern functions are hard coded C++ functions which can be called from the script.<\/p>\n
This enables the user to extend the language with functions coded and compiled with a C++ compiler. He can then enjoy speed and access extern data.<\/p>\n
In order to access extern functions, you must first write their prototypes in one of the script files.<\/p>\n
In order to write the prototype of an extern function, you must use the keyword prototype<\/b>:<\/p>\n\nprototype<\/span> int<\/span> func_name(int<\/span> param1);\n<\/pre>\n<\/div>\nWhen you call a system function, you must consider that they belong to the System script<\/b>.<\/p>\n
The system script is a virtual script in which all the extern functions will be stored.<\/p>\n
Consequently, the call of an extern function will looks like something like this:<\/p>\n
\ncall<\/span> System.func_name(5);\n<\/pre>\n<\/div>\nIf you\u2019ve declare system\/extern functions in one of your script files, you must match their prototypes with your C++ functions. A dll method is provided for that task.<\/p>\n
The principle is quiet simple. When you call an extern function from the script, the virtual machine will call the appropriate C++ function using its pointer to function.<\/p>\n
The N3DSE dll provides a set of methods in order to get the parameters and set the return value.<\/p>\n
If statement<\/h3>\n
Here is the syntax of the if statement<\/i>:<\/p>\n\n if <\/span>(condition)\n{\n #body#<\/span>\n}\nelse<\/span>\n{\n #else body# <\/span>\n}\n<\/pre>\n<\/div>\n The body of an if statement<\/i> is executed if the value of the condition is true.If it\u2019s false, the body of the else statement <\/i> is executed. <\/span> <\/span><\/p>\n NB: the condition must be a Boolean expression <\/span> <\/span><\/p>\n The else statement is optional. <\/span> <\/span><\/p>\nWhile statement<\/h3>\n
Here is the syntax of the while statement<\/i>:<\/p>\n\n while <\/span>(condition)\n{\n #body#<\/span>\n}\n<\/pre>\n<\/div>\n The body of a while statement is executed until the value of the condition becomes false. <\/span> <\/span><\/p>\n NB: the condition must be a Boolean expression <\/span> <\/span>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"[vc_row][vc_column][vc_column_text] N3DSE Script Engine N3DSE is a dynamic linked library made up of a compiler and a virtual machine. Programming in N3D Script (N3DS) […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-542","page","type-page","status-publish","hentry"],"acf":{"full_width":false,"header_transparent":false},"aioseo_notices":[],"_links":{"self":[{"href":"http:\/\/www.noxis-studio.com\/blog\/wp-json\/wp\/v2\/pages\/542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.noxis-studio.com\/blog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/www.noxis-studio.com\/blog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/www.noxis-studio.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.noxis-studio.com\/blog\/wp-json\/wp\/v2\/comments?post=542"}],"version-history":[{"count":2,"href":"http:\/\/www.noxis-studio.com\/blog\/wp-json\/wp\/v2\/pages\/542\/revisions"}],"predecessor-version":[{"id":545,"href":"http:\/\/www.noxis-studio.com\/blog\/wp-json\/wp\/v2\/pages\/542\/revisions\/545"}],"wp:attachment":[{"href":"http:\/\/www.noxis-studio.com\/blog\/wp-json\/wp\/v2\/media?parent=542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}