/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
/* If you are missing that file, acquire a complete release at teeworlds.com.                */
#include <engine/graphics.h>
#include <engine/shared/config.h>
#include <engine/textrender.h>

#include <game/generated/client_data.h>
#include <game/generated/protocol.h>

#include <game/layers.h>

#include <game/client/animstate.h>
#include <game/client/gameclient.h>
#include <game/client/render.h>

//#include "controls.h"
//#include "camera.h"
#include "debughud.h"

void CDebugHud::RenderNetCorrections()
{
	if(!g_Config.m_Debug || g_Config.m_DbgGraphs || !m_pClient->m_Snap.m_pLocalCharacter || !m_pClient->m_Snap.m_pLocalPrevCharacter)
		return;

	float Width = 300 * Graphics()->ScreenAspect();
	Graphics()->MapScreen(0, 0, Width, 300);

	/*float speed = distance(vec2(netobjects.local_prev_character->x, netobjects.local_prev_character->y),
		vec2(netobjects.local_character->x, netobjects.local_character->y));*/

	float Velspeed = length(vec2(m_pClient->m_Snap.m_pLocalCharacter->m_VelX / 256.0f, m_pClient->m_Snap.m_pLocalCharacter->m_VelY / 256.0f)) * 50;
	float Ramp = VelocityRamp(Velspeed, m_pClient->m_Tuning[g_Config.m_ClDummy].m_VelrampStart, m_pClient->m_Tuning[g_Config.m_ClDummy].m_VelrampRange, m_pClient->m_Tuning[g_Config.m_ClDummy].m_VelrampCurvature);

	const char *paStrings[] = {"velspeed:", "velspeed*ramp:", "ramp:", "checkpoint:", "Pos", " x:", " y:", "angle:", "netobj corrections", " num:", " on:"};
	const int Num = sizeof(paStrings) / sizeof(char *);
	const float LineHeight = 6.0f;
	const float Fontsize = 5.0f;

	float x = Width - 100.0f, y = 50.0f;
	for(int i = 0; i < Num; ++i)
		TextRender()->Text(0, x, y + i * LineHeight, Fontsize, paStrings[i], -1.0f);

	x = Width - 10.0f;
	char aBuf[128];
	str_format(aBuf, sizeof(aBuf), "%.0f", Velspeed / 32);
	float w = TextRender()->TextWidth(0, Fontsize, aBuf, -1, -1.0f);
	TextRender()->Text(0, x - w, y, Fontsize, aBuf, -1.0f);
	y += LineHeight;
	str_format(aBuf, sizeof(aBuf), "%.0f", Velspeed / 32 * Ramp);
	w = TextRender()->TextWidth(0, Fontsize, aBuf, -1, -1.0f);
	TextRender()->Text(0, x - w, y, Fontsize, aBuf, -1.0f);
	y += LineHeight;
	str_format(aBuf, sizeof(aBuf), "%.2f", Ramp);
	w = TextRender()->TextWidth(0, Fontsize, aBuf, -1, -1.0f);
	TextRender()->Text(0, x - w, y, Fontsize, aBuf, -1.0f);
	y += LineHeight;
	const CCharacter *pCharacter = m_pClient->m_GameWorld.GetCharacterByID(m_pClient->m_Snap.m_LocalClientID);
	if(pCharacter)
		str_format(aBuf, sizeof(aBuf), "%d", pCharacter->m_TeleCheckpoint);
	else
		str_copy(aBuf, "-1", sizeof(aBuf));
	w = TextRender()->TextWidth(0, Fontsize, aBuf, -1, -1.0f);
	TextRender()->Text(0, x - w, y, Fontsize, aBuf, -1.0f);
	y += 2 * LineHeight;
	str_format(aBuf, sizeof(aBuf), "%.2f", static_cast<float>(m_pClient->m_Snap.m_pLocalCharacter->m_X) / 32.0f);
	w = TextRender()->TextWidth(0, Fontsize, aBuf, -1, -1.0f);
	TextRender()->Text(0, x - w, y, Fontsize, aBuf, -1.0f);
	y += LineHeight;
	str_format(aBuf, sizeof(aBuf), "%.2f", static_cast<float>(m_pClient->m_Snap.m_pLocalCharacter->m_Y) / 32.0f);
	w = TextRender()->TextWidth(0, Fontsize, aBuf, -1, -1.0f);
	TextRender()->Text(0, x - w, y, Fontsize, aBuf, -1.0f);
	y += LineHeight;
	str_format(aBuf, sizeof(aBuf), "%d", m_pClient->m_Snap.m_pLocalCharacter->m_Angle);
	w = TextRender()->TextWidth(0, Fontsize, aBuf, -1, -1.0f);
	TextRender()->Text(0, x - w, y, Fontsize, aBuf, -1.0f);
	y += 2 * LineHeight;
	str_format(aBuf, sizeof(aBuf), "%d", m_pClient->NetobjNumCorrections());
	w = TextRender()->TextWidth(0, Fontsize, aBuf, -1, -1.0f);
	TextRender()->Text(0, x - w, y, Fontsize, aBuf, -1.0f);
	y += LineHeight;
	w = TextRender()->TextWidth(0, Fontsize, m_pClient->NetobjCorrectedOn(), -1, -1.0f);
	TextRender()->Text(0, x - w, y, Fontsize, m_pClient->NetobjCorrectedOn(), -1.0f);
}

void CDebugHud::RenderTuning()
{
	// render tuning debugging
	if(!g_Config.m_DbgTuning)
		return;

	CTuningParams StandardTuning;

	Graphics()->MapScreen(0, 0, 300 * Graphics()->ScreenAspect(), 300);

	float y = 27.0f;
	int Count = 0;
	for(int i = 0; i < CTuningParams::Num(); i++)
	{
		char aBuf[128];
		float Current, Standard;
		m_pClient->m_Tuning[g_Config.m_ClDummy].Get(i, &Current);
		StandardTuning.Get(i, &Standard);

		if(Standard == Current)
			TextRender()->TextColor(1, 1, 1, 1.0f);
		else
			TextRender()->TextColor(1, 0.25f, 0.25f, 1.0f);

		float w;
		float x = 5.0f;

		str_format(aBuf, sizeof(aBuf), "%.2f", Standard);
		x += 20.0f;
		w = TextRender()->TextWidth(0, 5, aBuf, -1, -1.0f);
		TextRender()->Text(0x0, x - w, y + Count * 6, 5, aBuf, -1.0f);

		str_format(aBuf, sizeof(aBuf), "%.2f", Current);
		x += 20.0f;
		w = TextRender()->TextWidth(0, 5, aBuf, -1, -1.0f);
		TextRender()->Text(0x0, x - w, y + Count * 6, 5, aBuf, -1.0f);

		x += 5.0f;
		TextRender()->Text(0x0, x, y + Count * 6, 5, CTuningParams::ms_apNames[i], -1.0f);

		Count++;
	}

	y = y + Count * 6;

	Graphics()->TextureClear();
	Graphics()->BlendNormal();
	Graphics()->LinesBegin();
	float Height = 50.0f;
	float pv = 1;
	IGraphics::CLineItem Array[100];
	for(int i = 0; i < 100; i++)
	{
		float Speed = i / 100.0f * 3000;
		float Ramp = VelocityRamp(Speed, m_pClient->m_Tuning[g_Config.m_ClDummy].m_VelrampStart, m_pClient->m_Tuning[g_Config.m_ClDummy].m_VelrampRange, m_pClient->m_Tuning[g_Config.m_ClDummy].m_VelrampCurvature);
		float RampedSpeed = (Speed * Ramp) / 1000.0f;
		Array[i] = IGraphics::CLineItem((i - 1) * 2, y + Height - pv * Height, i * 2, y + Height - RampedSpeed * Height);
		//Graphics()->LinesDraw((i-1)*2, 200, i*2, 200);
		pv = RampedSpeed;
	}
	Graphics()->LinesDraw(Array, 100);
	Graphics()->LinesEnd();
	TextRender()->TextColor(1, 1, 1, 1);
}

void CDebugHud::RenderHint()
{
	if(!g_Config.m_Debug)
		return;

	float Width = 300 * Graphics()->ScreenAspect();
	Graphics()->MapScreen(0, 0, Width, 300);
	TextRender()->TextColor(1, 1, 1, 1);
	TextRender()->Text(0x0, 5, 290, 5, Localize("Debug mode enabled. Press Ctrl+Shift+D to disable debug mode."), -1.0f);
}

void CDebugHud::OnRender()
{
	RenderTuning();
	RenderNetCorrections();
	RenderHint();
}