Clib Interface

C bindings for inkcpp More...

Classes
struct	InkListIter
	Iterater used to iterate flags of a HInkList. More...
struct	InkValue
	Repserentation of a ink variable. More...
class	HInkSnapshot
	Handler for a ink snapshot. More...
class	HInkChoice
	Handler for a ink choice. More...
class	HInkList
	Handler for a ink list. More...
class	HInkRunner
	A handle for an ink runner. More...
class	HInkGlobals
	Handle for the global variable store shared among ink runners. More...
class	HInkStory
	Handle for a loaded ink story. More...

Functions
ink_hash_t	ink_hash_string (const char *str)
	Hash a string, this hash is used inside inkcpp instead of the string actual value.
void	ink_compile_json (const char *input_filename, const char *output_filename, const char **error)
	Compiles a .ink.json file to an inkCPP .bin file.

Detailed Description

C bindings for inkcpp

There are two different ways to get the C bindings.

1. Use the distributed <os>-lib.zip for a C++ and C lib combined, then use CMake for the linkadge (or do it manually)
2. Use the distrubuted <os>-clib.zip for a C only lib, then use CMake, or pkg-config.

Please note that the included header is different between this two installation methods.

1. #include <ink/c/inkcpp.h>
2. #include <ink/inkcpp.h>

Example

To setup an example for option 1. and 2. if you use cmake checkout CMAKE usage and replace target_link_libraries with target_link_libraries(main inkcpp_c) The story and source file can be used as noted down

For setup an example for option 2. without cmake create a directory with the files below:

• main.c: found below
• test.ink.json: found at test.ink

And extract <os>-clib.zip from the release page to /MY/INKCPP/EXAMPLE_INSTALL/PATH.
To run the example do the following:

• change the prefix=... in /MY/INKCPP/EXAMPLE_INSTALL/PATH/lib/pkgconfig/inkcpp.pc to prefix=/MY/INKCPP_EXAMPLE_INSTALL_PATH/
• export PKG_CONFIG_PATH=/MY/INKCPP/EXAMPLE_INSTALL/PATH/lib/pkgconfig
• gcc -c main.c $(pkg-config --cflags inkcpp)
• g++ -o main main.o $(pkg-config --libs inkcpp)
• ./main

As a sideproduct a file named test.bin should be created coaining the binary format used by inkCPP.

main.c

#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
 
#include <ink/c/inkcpp.h> // if <os>-lib.zip was used for the installation
 
// #include <ink/inkcpp.h> // if <os>-clib.zip was used for the installation
 
InkValue ink_add(int argc, const InkValue argv[])
{
    assert(argc == 2);
    assert(argv[0].type == ValueTypeInt32 && argv[1].type == ValueTypeInt32);
    return (InkValue){.type = ValueTypeInt32, .int32_v = argv[0].int32_v + argv[1].int32_v};
}
 
int main()
{
    ink_compile_json("test.ink.json", "test.bin", NULL);
    HInkStory*  story  = ink_story_from_file("test.bin");
    HInkRunner* runner = ink_story_new_runner(story, NULL);
 
    ink_runner_bind(runner, "my_ink_function", ink_add, 1);
 
    while (1) {
        while (ink_runner_can_continue(runner)) {
            printf("%s", ink_runner_get_line(runner));
        }
        if (ink_runner_num_choices(runner) == 0)
            break;
        for (int i = 0; i < ink_runner_num_choices(runner); ++i) {
            printf("%i. %s\n", i, ink_choice_text(ink_runner_get_choice(runner, i)));
        }
 
        int id;
        scanf("%i", &id);
        ink_runner_choose(runner, id);
    }
}

Function Documentation

ink_compile_json()

void ink_compile_json	(	const char *	input_filename,
		const char *	output_filename,
		const char **	error )

Compiles a .ink.json file to an inkCPP .bin file.

Parameters

input_filename	path to file contaning input data (.ink.json)
output_filename	path to file output data will be written (.bin)
error	if not NULL will contain a error message if an error occures (else will be set to NULL)

ink_hash_string()

ink_hash_t ink_hash_string

(

const char *

str

)

Hash a string, this hash is used inside inkcpp instead of the string actual value.

See also

HInkRunner::ink_runner_move_to(), HInkRunner::ink_runner_current_knot()

Parameters

str	string to hash

Returns

hash of string