ddnet/src/game/client/components/camera.cpp

/* (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/shared/config.h>
#include <base/tl/string.h>
#include <engine/serverbrowser.h>

#include <base/math.h>
#include <game/collision.h>
#include <game/client/gameclient.h>
#include <game/client/component.h>

#include "camera.h"
#include "controls.h"

CCamera::CCamera()
{
	m_Zoom = 1.0f;
	m_WasSpectator = false;
}

void CCamera::OnRender()
{
	//vec2 center;

	// update camera center		
	if(m_pClient->m_Snap.m_Spectate)
	{
		if(!m_WasSpectator)
		{
			m_pClient->m_pControls->ClampMousePos();
			m_WasSpectator = true;
		}
		m_Center = m_pClient->m_pControls->m_MousePos;
	}
	else
	{
		if(m_WasSpectator)
		{
			m_pClient->m_pControls->ClampMousePos();
			m_WasSpectator = false;
		}
		float l = length(m_pClient->m_pControls->m_MousePos);
		float DeadZone = g_Config.m_ClMouseDeadzone;
		float FollowFactor = g_Config.m_ClMouseFollowfactor/100.0f;
		vec2 CameraOffset(0, 0);

		float OffsetAmount = max(l-DeadZone, 0.0f) * FollowFactor;
		if(l > 0.0001f) // make sure that this isn't 0
			CameraOffset = normalize(m_pClient->m_pControls->m_MousePos)*OffsetAmount;
		
		m_Center = m_pClient->m_LocalCharacterPos + CameraOffset;
	}
}

void CCamera::OnConsoleInit()
{
	Console()->Register("zoom+", "", CFGFLAG_CLIENT, ConZoomPlus, this, "Zoom increase", 0);
	Console()->Register("zoom-", "", CFGFLAG_CLIENT, ConZoomMinus, this, "Zoom decrease", 0);
	Console()->Register("zoom", "", CFGFLAG_CLIENT, ConZoomReset, this, "Zoom reset", 0);
}

const float ZoomStep = 0.75f;
void CCamera::ConZoomPlus(IConsole::IResult *pResult, void *pUserData, int ClientID)
{
	CCamera *pSelf = (CCamera *)pUserData;
	CServerInfo Info;
	pSelf->Client()->GetServerInfo(&Info);
	if(g_Config.m_ClDDRaceCheats == 1 && str_find_nocase(Info.m_aGameType, "race"))
		((CCamera *)pUserData)->m_Zoom *= ZoomStep;
}
void CCamera::ConZoomMinus(IConsole::IResult *pResult, void *pUserData, int ClientID)
{
	CCamera *pSelf = (CCamera *)pUserData;
	CServerInfo Info;
	pSelf->Client()->GetServerInfo(&Info);
	if(g_Config.m_ClDDRaceCheats == 1 && str_find_nocase(Info.m_aGameType, "race"))
		((CCamera *)pUserData)->m_Zoom *= 1/ZoomStep;
}
void CCamera::ConZoomReset(IConsole::IResult *pResult, void *pUserData, int ClientID)
{
	CCamera *pSelf = (CCamera *)pUserData;
	CServerInfo Info;
	pSelf->Client()->GetServerInfo(&Info);
	if(g_Config.m_ClDDRaceCheats == 1 && str_find_nocase(Info.m_aGameType, "race"))
		((CCamera *)pUserData)->m_Zoom = 1.0f;
}