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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include <SDL_keycode.h>
#include <boost/cstdint.hpp>
#include "OverheadController.h"
#include "System/Config/ConfigHandler.h"
#include "Game/Camera.h"
#include "Game/CameraHandler.h"
#include "Game/UI/MouseHandler.h"
#include "Map/Ground.h"
#include "Rendering/GlobalRendering.h"
#include "System/Log/ILog.h"
#include "System/myMath.h"
#include "System/Input/KeyInput.h"
CONFIG(float, MiddleClickScrollSpeed).defaultValue(0.01f);
CONFIG(int, OverheadScrollSpeed).defaultValue(10);
CONFIG(float, OverheadTiltSpeed).defaultValue(1.0f);
CONFIG(bool, OverheadEnabled).defaultValue(true);
CONFIG(float, OverheadFOV).defaultValue(45.0f);
COverheadController::COverheadController()
: flipped(false)
, zscale(0.5f)
, height(1500)
, oldAltHeight(1500)
, changeAltHeight(true)
, maxHeight(10000)
{
middleClickScrollSpeed = configHandler->GetFloat("MiddleClickScrollSpeed");
scrollSpeed = configHandler->GetInt("OverheadScrollSpeed") * 0.1f;
tiltSpeed = configHandler->GetFloat("OverheadTiltSpeed");
enabled = configHandler->GetBool("OverheadEnabled");
fov = configHandler->GetFloat("OverheadFOV");
if (globalRendering) {
// make whole map visible
const float h = std::max(pos.x / globalRendering->aspectRatio, pos.z);
height = CGround::GetHeightAboveWater(pos.x, pos.z, false) + (2.5f * h);
}
maxHeight = 9.5f * std::max(gs->mapx, gs->mapy);
UpdateVectors();
}
void COverheadController::KeyMove(float3 move)
{
if (flipped) {
move.x = -move.x;
move.y = -move.y;
}
move *= math::sqrt(move.z) * 200;
pos.x += move.x * pixelSize * 2.0f * scrollSpeed;
pos.z -= move.y * pixelSize * 2.0f * scrollSpeed;
UpdateVectors();
}
void COverheadController::MouseMove(float3 move)
{
if (flipped) {
move.x = -move.x;
move.y = -move.y;
}
move *= 100 * middleClickScrollSpeed;
pos.x += move.x * pixelSize * (1 + KeyInput::GetKeyModState(KMOD_SHIFT) * 3) * scrollSpeed;
pos.z += move.y * pixelSize * (1 + KeyInput::GetKeyModState(KMOD_SHIFT) * 3) * scrollSpeed;
UpdateVectors();
}
void COverheadController::ScreenEdgeMove(float3 move)
{
KeyMove(move);
}
// FIXME: 100% identical to SmoothController::MouseWheelMove
void COverheadController::MouseWheelMove(float move)
{
if (move == 0.0f)
return;
camHandler->CameraTransition(0.05f);
const float shiftSpeed = (KeyInput::GetKeyModState(KMOD_SHIFT) ? 3.0f : 1.0f);
const float altZoomDist = height * move * 0.007f * shiftSpeed;
// tilt the camera if LCTRL is pressed
//
// otherwise holding down LALT uses 'instant-zoom'
// from here to the end of the function (smoothed)
if (KeyInput::GetKeyModState(KMOD_CTRL)) {
zscale *= (1.0f + (0.01f * move * tiltSpeed * shiftSpeed));
zscale = Clamp(zscale, 0.05f, 10.0f);
} else {
if (move < 0.0f) {
// ZOOM IN to mouse cursor instead of mid screen
float3 cpos = pos - dir * height;
float dif = -altZoomDist;
if ((height - dif) < 60.0f) {
dif = height - 60.0f;
}
if (KeyInput::GetKeyModState(KMOD_ALT)) {
// instazoom in to standard view
dif = (height - oldAltHeight) / mouse->dir.y * dir.y;
}
float3 wantedPos = cpos + mouse->dir * dif;
float newHeight = CGround::LineGroundCol(wantedPos, wantedPos + dir * 15000, false);
if (newHeight < 0.0f) {
newHeight = height * (1.0f + move * 0.007f * shiftSpeed);
}
if ((wantedPos.y + (dir.y * newHeight)) < 0.0f) {
newHeight = -wantedPos.y / dir.y;
}
if (newHeight < maxHeight) {
height = newHeight;
pos = wantedPos + dir * height;
}
} else {
// ZOOM OUT from mid screen
if (KeyInput::GetKeyModState(KMOD_ALT)) {
// instazoom out to maximum height
if (height < maxHeight*0.5f && changeAltHeight) {
oldAltHeight = height;
changeAltHeight = false;
}
height = maxHeight;
pos.x = gs->mapx * 4;
pos.z = gs->mapy * 4.8f; // somewhat longer toward bottom
} else {
height *= (1.0f + (altZoomDist / height));
}
}
// instant-zoom: turn on the smooth transition and reset the camera tilt
if (KeyInput::GetKeyModState(KMOD_ALT)) {
zscale = 0.5f;
camHandler->CameraTransition(1.0f);
} else {
changeAltHeight = true;
}
}
UpdateVectors();
}
void COverheadController::UpdateVectors()
{
pos.x = Clamp(pos.x, 0.01f, gs->mapx * SQUARE_SIZE - 0.01f);
pos.z = Clamp(pos.z, 0.01f, gs->mapy * SQUARE_SIZE - 0.01f);
pos.y = CGround::GetHeightAboveWater(pos.x, pos.z, false);
height = Clamp(height, 60.0f, maxHeight);
dir = float3(0.0f, -1.0f, flipped ? zscale : -zscale).ANormalize();
}
void COverheadController::Update()
{
pixelSize = (camera->GetTanHalfFov() * 2.0f) / globalRendering->viewSizeY * height * 2.0f;
}
float3 COverheadController::GetPos() const
{
float3 cpos = pos - dir * height;
return cpos;
}
void COverheadController::SetPos(const float3& newPos)
{
pos = newPos;
UpdateVectors();
}
float3 COverheadController::SwitchFrom() const
{
return pos;
}
void COverheadController::SwitchTo(bool showText)
{
if (showText) {
LOG("Switching to Overhead (TA) style camera");
}
}
void COverheadController::GetState(StateMap& sm) const
{
CCameraController::GetState(sm);
sm["height"] = height;
sm["zscale"] = zscale;
sm["flipped"] = flipped ? +1.0f : -1.0f;
}
bool COverheadController::SetState(const StateMap& sm)
{
CCameraController::SetState(sm);
SetStateFloat(sm, "height", height);
SetStateFloat(sm, "zscale", zscale);
SetStateBool (sm, "flipped", flipped);
UpdateVectors();
return true;
}
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