Implement Con_Printf() hook

[francoromaniello]

Related to #219

[wopox1337]

Why do you need this hook?

[RauliTop]

Why do you need this hook?

It's commented here: #219

[wopox1337]

@francoromaniello update PR please

[wopox1337]

Thanks. What's about pointers style?

[wopox1337]

test passed

Server Median FPS: `875.80` (min=163.92, max=924.80)

#include <amxmodx>
#include <reapi>

static HookChain: hook

public plugin_init() {
	DisableHookChain(
		(hook = RegisterHookChain(RH_Con_Printf, "RH_Con_Printf_Pre"))
	)

	set_task(0.1, "test", .flags = "b")
}

static Msg[ 100 ];


public test() {
	EnableHookChain(hook)
	server_cmd("stats"); server_exec()
	DisableHookChain(hook)

	static Array: arrayFPS
	if(!arrayFPS)
		arrayFPS = ArrayCreate()

	static tokens[ 14 ][ 32 ]

	for ( new i; i < sizeof tokens; i++ ) {
		trim( Msg );
		strtok( Msg, tokens[ i ], charsmax(tokens[]), Msg, charsmax( Msg ), ' ' )
	}

	static
		Float: currentFPS,
		Float: minFPS = cellmax,
		Float: maxFPS = cellmin

	currentFPS = str_to_float(tokens[12])

	ArrayPushCell(arrayFPS, currentFPS)

	if (currentFPS > maxFPS)
		maxFPS = currentFPS

	if (currentFPS < minFPS && currentFPS > 0.0)
		minFPS = currentFPS

	new median = ArrayGetMedian(arrayFPS)

	server_print("Server Median FPS: `%.2f` (min=%.2f, max=%.2f)",
		median, minFPS, maxFPS)
}

public RH_Con_Printf_Pre( const message[] ) {
	copy( Msg, charsmax( Msg ), message )

	return HC_SUPERCEDE
}

stock Float: ArrayGetMedian( const Array: array ) {
	SortADTArray(array, Sort_Ascending, Sort_Float)
	new n = ( ArraySize(array) + 1 ) / 2 - 1

	return Float: ArrayGetCell(array, n)
}