cp_geoscape.cpp

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/*
Copyright (C) 2002-2022 UFO: Alien Invasion.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include "../../DateTime.h"
#include "../../cl_shared.h"
#include "../../ui/ui_dataids.h"
#include "../../ui/node/ui_node_geoscape.h"
#include "cp_overlay.h"
#include "cp_campaign.h"
#include "cp_geoscape.h"
#include "cp_popup.h"
#include "cp_mapfightequip.h"
#include "cp_missions.h"
#include "cp_ufo.h"
#include "cp_time.h"
#include "cp_xvi.h"

static uiNode_t* geoscapeNode;

#ifdef DEBUG
static cvar_t* debug_showInterest;
#endif

#define GLOBE_ROTATE -90
#define ZOOM_LIMIT  2.5f

/* Functions */
static bool GEO_IsPositionSelected(const uiNode_t* node, const vec2_t pos, int x, int y);

/* static variables */
static char textStandard[2048];     
static int centerOnEventIdx;        
/* Colors */
static const vec4_t green = {0.0f, 1.0f, 0.0f, 0.8f};
static const vec4_t yellow = {1.0f, 0.874f, 0.294f, 1.0f};
static const vec4_t red = {1.0f, 0.0f, 0.0f, 0.8f};

static const float defaultBaseAngle = -90.0f;   
static byte* terrainPic;                
static int terrainWidth, terrainHeight;         
static byte* culturePic;                
static int cultureWidth, cultureHeight;         
static byte* populationPic;             
static int populationWidth, populationHeight;       
static byte* nationsPic;                
static int nationsWidth, nationsHeight;         
/*
==============================================================
CLICK ON MAP and MULTI SELECTION FUNCTIONS
==============================================================
*/

bool GEO_IsRadarOverlayActivated (void)
{
    return cgi->Cvar_GetInteger("geo_overlay_radar");
}

static inline bool GEO_IsNationOverlayActivated (void)
{
    return cgi->Cvar_GetInteger("geo_overlay_nation");
}

static inline bool GEO_IsXVIOverlayActivated (void)
{
    return cgi->Cvar_GetInteger("geo_overlay_xvi");
}

bool GEO_Click (const uiNode_t* node, int x, int y, const vec2_t pos)
{
    switch (ccs.mapAction) {
    case MA_NEWBASE:
        /* new base construction */
        if (!MapIsWater(GEO_GetColor(pos, MAPTYPE_TERRAIN, nullptr))) {
            if (B_GetCount() < MAX_BASES) {
                Vector2Copy(pos, ccs.newBasePos);
                CP_GameTimeStop();
                cgi->Cmd_ExecuteString("mn_set_base_title");
                cgi->UI_PushWindow("popup_newbase");
                return true;
            }
            return false;
        }
        break;
    case MA_NEWINSTALLATION:
        if (!MapIsWater(GEO_GetColor(pos, MAPTYPE_TERRAIN, nullptr))) {
            Vector2Copy(pos, ccs.newBasePos);
            CP_GameTimeStop();
            cgi->UI_PushWindow("popup_newinstallation");
            return true;
        }
        break;
    default:
        break;
    }

    /* Init data for multi selection */
    cgi->UI_ExecuteConfunc("ui_clear_geoscape_selection");
    int selection_count = 0;
    /* Get selected missions */
    MIS_Foreach(tempMission) {
        if (tempMission->stage == STAGE_NOT_ACTIVE || !tempMission->onGeoscape)
            continue;
        if (!tempMission->pos || !GEO_IsPositionSelected(node, tempMission->pos, x, y))
            continue;
        cgi->UI_ExecuteConfunc("ui_add_geoscape_selection \"%s\" \"%d\" \"%s\"",
            "mission", MIS_GetIdx(tempMission), MIS_GetName(tempMission));
        ++selection_count;
    }

    /* Get selected aircraft which belong */
    AIR_Foreach(aircraft) {
        if (AIR_IsAircraftOnGeoscape(aircraft) && aircraft->fuel > 0 && GEO_IsPositionSelected(node, aircraft->pos, x, y)) {
            cgi->UI_ExecuteConfunc("ui_add_geoscape_selection \"%s\" \"%d\" \"%s\"",
                "aircraft", aircraft->idx, aircraft->name);
            ++selection_count;
        }
    }

    /* Get selected bases */
    base_t* base = nullptr;
    while ((base = B_GetNext(base)) != nullptr) {
        if (!GEO_IsPositionSelected(node, base->pos, x, y))
            continue;
        cgi->UI_ExecuteConfunc("ui_add_geoscape_selection \"%s\" \"%d\" \"%s\"",
            "base", base->idx, base->name);
        ++selection_count;
    }

    /* Get selected installations */
    INS_Foreach(installation) {
        if (!GEO_IsPositionSelected(node, installation->pos, x, y))
            continue;
        cgi->UI_ExecuteConfunc("ui_add_geoscape_selection \"%s\" \"%d\" \"%s\"",
            "installation", installation->idx, installation->name);
        ++selection_count;
    }

    /* Get selected ufos */
    aircraft_t* ufo = nullptr;
    while ((ufo = UFO_GetNextOnGeoscape(ufo)) != nullptr) {
        if (AIR_IsAircraftOnGeoscape(ufo) && GEO_IsPositionSelected(node, ufo->pos, x, y)) {
            cgi->UI_ExecuteConfunc("ui_add_geoscape_selection \"%s\" \"%lu\" \"%s\"",
                "ufo", UFO_GetGeoscapeIDX(ufo), UFO_GetName(ufo));
            ++selection_count;
        }
    }

    if (selection_count > 0) {
        CP_GameTimeStop();
        cgi->UI_PushWindow("popup_geoscape_selection");
        return true;
    } else {
        aircraft_t* aircraft = GEO_GetSelectedAircraft();
        /* Nothing selected */
        if (!aircraft) {
            GEO_ResetAction();
            return false;
        }

        if (AIR_IsAircraftOnGeoscape(aircraft) && AIR_AircraftHasEnoughFuel(aircraft, pos)) {
            /* Move the selected aircraft to the position clicked */
            GEO_CalcLine(aircraft->pos, pos, &aircraft->route);
            aircraft->status = AIR_TRANSIT;
            aircraft->aircraftTarget = nullptr;
            aircraft->time = 0;
            aircraft->point = 0;
            return true;
        }
    }
    return false;
}


/*
==============================================================
GEOSCAPE DRAWING AND COORDINATES
==============================================================
*/

static bool GEO_3DMapToScreen (const uiNode_t* node, const vec2_t pos, int* x, int* y, int* z)
{
    vec2_t mid;
    vec3_t v, v1, rotationAxis;
    const float radius = GLOBE_RADIUS;

    PolarToVec(pos, v);

    /* rotate the vector to switch of reference frame.
     * We switch from the static frame of the earth to the local frame of the player */
    VectorSet(rotationAxis, 0, 0, 1);
    const mapExtraData_t& data = UI_MAPEXTRADATACONST(node);
    RotatePointAroundVector(v1, rotationAxis, v, - data.angles[PITCH]);

    VectorSet(rotationAxis, 0, 1, 0);
    RotatePointAroundVector(v, rotationAxis, v1, - data.angles[YAW]);

    /* set mid to the coordinates of the center of the globe */
    Vector2Set(mid, data.mapPos[0] + data.mapSize[0] / 2.0f, data.mapPos[1] + data.mapSize[1] / 2.0f);

    /* We now convert those coordinates relative to the center of the globe to coordinates of the screen
     * (which are relative to the upper left side of the screen) */
    *x = (int) (mid[0] - radius * v[1]);
    *y = (int) (mid[1] - radius * v[0]);

    if (z)
        *z = (int) (radius * v[2]);

    /* if the point is on the wrong side of the earth, the player cannot see it */
    if (v[2] > 0)
        return false;

    /* if the point is outside the screen, the player cannot see it */
    if (*x < data.mapPos[0] && *y < data.mapPos[1]
            && *x > data.mapPos[0] + data.mapSize[0]
            && *y > data.mapPos[1] + data.mapSize[1])
        return false;

    return true;
}

static bool GEO_MapToScreen (const uiNode_t* node, const vec2_t pos, int* x, int* y)
{
    const mapExtraData_t& data = UI_MAPEXTRADATACONST(node);
    /* get "raw" position */
    float sx = pos[0] / 360 + data.center[0] - 0.5;

    /* shift it on screen */
    if (sx < -0.5f)
        sx += 1.0f;
    else if (sx > +0.5f)
        sx -= 1.0f;

    *x = data.mapPos[0] + 0.5f * data.mapSize[0] - sx * data.mapSize[0] * data.zoom;
    *y = data.mapPos[1] + 0.5f * data.mapSize[1] - (pos[1] / 180.0f + data.center[1] - 0.5f) * data.mapSize[1] * data.zoom;

    if (*x < data.mapPos[0] && *y < data.mapPos[1]
            && *x > data.mapPos[0] + data.mapSize[0]
            && *y > data.mapPos[1] + data.mapSize[1])
        return false;
    return true;
}

static bool GEO_AllMapToScreen (const uiNode_t* node, const vec2_t pos, int* x, int* y, int* z)
{
    const mapExtraData_t& data = UI_MAPEXTRADATACONST(node);
    if (!data.flatgeoscape)
        return GEO_3DMapToScreen(node, pos, x, y, z);

    if (z)
        *z = -10;
    return GEO_MapToScreen(node, pos, x, y);
}

#define UI_MAP_DIST_SELECTION 15

static bool GEO_IsPositionSelected (const uiNode_t* node, const vec2_t pos, int x, int y)
{
    int msx, msy;

    if (GEO_AllMapToScreen(node, pos, &msx, &msy, nullptr))
        if (x >= msx - UI_MAP_DIST_SELECTION && x <= msx + UI_MAP_DIST_SELECTION
         && y >= msy - UI_MAP_DIST_SELECTION && y <= msy + UI_MAP_DIST_SELECTION)
            return true;

    return false;
}

static void GEO_Draw3DMarkerIfVisible (const uiNode_t* node, const vec2_t pos, float theta, const char* model, int skin)
{
    const mapExtraData_t& data = UI_MAPEXTRADATACONST(node);
    if (data.flatgeoscape) {
        int x, y;
        vec3_t screenPos;

        GEO_AllMapToScreen(node, pos, &x, &y, nullptr);
        VectorSet(screenPos, x, y, 0);
        /* models are used on 2D geoscape for aircraft */
        cgi->R_Draw2DMapMarkers(screenPos, theta, model, skin);
    } else {
        cgi->R_Draw3DMapMarkers(data.mapPos, data.mapSize, data.angles, pos, theta, GLOBE_RADIUS, model, skin);
    }
}

void GEO_CalcLine (const vec2_t start, const vec2_t end, mapline_t* line)
{
    vec3_t s, e, v;
    vec3_t normal;
    vec2_t trafo, sa, ea;
    float cosTrafo, sinTrafo;
    float phiStart, phiEnd, dPhi, phi;
    float* p;
    int i, n;

    /* get plane normal */
    PolarToVec(start, s);
    PolarToVec(end, e);
    /* Procedure below won't work if start is the same like end */
    if (VectorEqual(s, e)) {
        line->distance = 0;
        line->numPoints = 2;
        Vector2Set(line->point[0], end[0], end[1]);
        Vector2Set(line->point[1], end[0], end[1]);
        return;
    }

    CrossProduct(s, e, normal);
    VectorNormalize(normal);

    /* get transformation */
    VecToPolar(normal, trafo);
    cosTrafo = cos(trafo[1] * torad);
    sinTrafo = sin(trafo[1] * torad);

    sa[0] = start[0] - trafo[0];
    sa[1] = start[1];
    PolarToVec(sa, s);
    ea[0] = end[0] - trafo[0];
    ea[1] = end[1];
    PolarToVec(ea, e);

    phiStart = atan2(s[1], cosTrafo * s[2] - sinTrafo * s[0]);
    phiEnd = atan2(e[1], cosTrafo * e[2] - sinTrafo * e[0]);

    /* get waypoints */
    if (phiEnd < phiStart - M_PI)
        phiEnd += 2 * M_PI;
    if (phiEnd > phiStart + M_PI)
        phiEnd -= 2 * M_PI;

    n = (phiEnd - phiStart) / M_PI * LINE_MAXSEG;
    if (n > 0)
        n = n + 1;
    else
        n = -n + 1;

    line->distance = fabs(phiEnd - phiStart) / n * todeg;
    line->numPoints = n + 1;
    /* make sure we do not exceed route array size */
    assert(line->numPoints <= LINE_MAXPTS);
    dPhi = (phiEnd - phiStart) / n;
    p = nullptr;
    for (phi = phiStart, i = 0; i <= n; phi += dPhi, i++) {
        const float* last = p;
        p = line->point[i];
        VectorSet(v, -sinTrafo * cos(phi), sin(phi), cosTrafo * cos(phi));
        VecToPolar(v, p);
        p[0] += trafo[0];

        if (!last) {
            while (p[0] < -180.0)
                p[0] += 360.0;
            while (p[0] > +180.0)
                p[0] -= 360.0;
        } else {
            while (p[0] - last[0] > +180.0)
                p[0] -= 360.0;
            while (p[0] - last[0] < -180.0)
                p[0] += 360.0;
        }
    }
}

static void GEO_MapDrawLine (const uiNode_t* node, const mapline_t* line)
{
    const vec4_t color = {1, 0.5, 0.5, 1};
    screenPoint_t pts[LINE_MAXPTS];
    screenPoint_t* p;
    int i, start, old;

    /* draw */
    cgi->R_Color(color);
    start = 0;
    const mapExtraData_t& data = UI_MAPEXTRADATACONST(node);
    old = data.mapSize[0] / 2;
    for (i = 0, p = pts; i < line->numPoints; i++, p++) {
        GEO_MapToScreen(node, line->point[i], &p->x, &p->y);

        /* If we cross longitude 180 degree (right/left edge of the screen), draw the first part of the path */
        if (i > start && abs(p->x - old) > data.mapSize[0] / 2) {
            /* shift last point */
            int diff;

            if (p->x - old > data.mapSize[0] / 2)
                diff = -data.mapSize[0] * data.zoom;
            else
                diff = data.mapSize[0] * data.zoom;
            p->x += diff;

            /* wrap around screen border */
            cgi->R_DrawLineStrip(i - start, (int*)(&pts));

            /* first path of the path is drawn, now we begin the second part of the path */
            /* shift first point, continue drawing */
            start = i;
            pts[0].x = p[-1].x - diff;
            pts[0].y = p[-1].y;
            p = pts;
        }
        old = p->x;
    }

    cgi->R_DrawLineStrip(i - start, (int*)(&pts));
    cgi->R_Color(nullptr);
}

static void GEO_3DMapDrawLine (const uiNode_t* node, const mapline_t* line)
{
    const vec4_t color = {1, 0.5, 0.5, 1};
    screenPoint_t pts[LINE_MAXPTS];
    int numPoints, start;

    start = 0;
    numPoints = 0;

    /* draw only when the point of the path is visible */
    cgi->R_Color(color);
    for (int i = 0; i < line->numPoints; i++) {
        if (GEO_3DMapToScreen(node, line->point[i], &pts[i].x, &pts[i].y, nullptr))
            numPoints++;
        else if (!numPoints)
            /* the point which is not drawn is at the beginning of the path */
            start++;
    }

    cgi->R_DrawLineStrip(numPoints, (int*)(&pts[start]));
    cgi->R_Color(nullptr);
}

#define CIRCLE_DRAW_POINTS  60

static void GEO_MapDrawEquidistantPoints (const uiNode_t* node, const vec2_t center, const float angle, const vec4_t color)
{
    screenPoint_t pts[CIRCLE_DRAW_POINTS + 1];
    int numPoints = 0;
    vec3_t initialVector, rotationAxis, currentPoint, centerPos;

    cgi->R_Color(color);

    /* Set centerPos corresponding to cartesian coordinates of the center point */
    PolarToVec(center, centerPos);

    /* Find a perpendicular vector to centerPos, and rotate centerPos around it to obtain one point distant of angle from centerPos */
    PerpendicularVector(rotationAxis, centerPos);
    RotatePointAroundVector(initialVector, rotationAxis, centerPos, angle);

    bool draw = false;
    bool oldDraw = false;
    const mapExtraData_t& data = UI_MAPEXTRADATACONST(node);
    /* Now, each equidistant point is given by a rotation around centerPos */
    for (int i = 0; i <= CIRCLE_DRAW_POINTS; i++) {
        int xCircle, yCircle;
        vec2_t posCircle;
        const float degrees = i * 360.0f / (float)CIRCLE_DRAW_POINTS;
        RotatePointAroundVector(currentPoint, centerPos, initialVector, degrees);
        VecToPolar(currentPoint, posCircle);
        if (GEO_AllMapToScreen(node, posCircle, &xCircle, &yCircle, nullptr)) {
            draw = true;
            if (data.flatgeoscape && numPoints != 0 && abs(pts[numPoints - 1].x - xCircle) > 512)
                oldDraw = false;
        }

        /* if moving from a point of the screen to a distant one, draw the path we already calculated, and begin a new path
         * (to avoid unwanted lines) */
        if (draw != oldDraw && i != 0) {
            cgi->R_DrawLineStrip(numPoints, (int*)(&pts));
            numPoints = 0;
        }
        /* if the current point is to be drawn, add it to the path */
        if (draw) {
            pts[numPoints].x = xCircle;
            pts[numPoints].y = yCircle;
            numPoints++;
        }
        /* update value of oldDraw */
        oldDraw = draw;
    }

    /* Draw the last path */
    cgi->R_DrawLineStrip(numPoints, (int*)(&pts));
    cgi->R_Color(nullptr);
}

static float GEO_AngleOfPath3D (const vec2_t start, const vec2_t end, vec3_t direction, vec3_t ortVector)
{
    vec3_t start3D, end3D, north3D, ortToDest, ortToPole, v;
    const vec2_t northPole = {0.0f, 90.0f}; 
    PolarToVec(start, start3D);
    PolarToVec(end, end3D);
    PolarToVec(northPole, north3D);

    /* calculate the vector othogonal to movement */
    CrossProduct(start3D, end3D, ortToDest);
    VectorNormalize(ortToDest);
    if (ortVector) {
        VectorCopy(ortToDest, ortVector);
    }

    /* calculate the vector othogonal to north pole (from model location) */
    CrossProduct(start3D, north3D, ortToPole);
    VectorNormalize(ortToPole);

    /* smooth change of direction if the model is not idle */
    if (direction) {
        VectorSubtract(ortToDest, direction, v);
        const float dist = VectorLength(v);
        if (dist > 0.01) {
            vec3_t rotationAxis;
            CrossProduct(direction, ortToDest, rotationAxis);
            VectorNormalize(rotationAxis);
            RotatePointAroundVector(v, rotationAxis, direction, 5.0);
            VectorCopy(v, direction);
            VectorSubtract(ortToDest, direction, v);
            if (VectorLength(v) < dist)
                VectorCopy(direction, ortToDest);
            else
                VectorCopy(ortToDest, direction);
        }
    }

    /* calculate the angle the model is making at earth surface with north pole direction */
    float angle = todeg * acos(DotProduct(ortToDest, ortToPole));
    /* with arcos, you only get the absolute value of the angle: get the sign */
    CrossProduct(ortToDest, ortToPole, v);
    if (DotProduct(start3D, v) < 0)
        angle = - angle;

    return angle;
}

static float GEO_AngleOfPath2D (const vec2_t start, const vec2_t end, vec3_t direction, vec3_t ortVector)
{
    vec3_t start3D, end3D, tangentVector, v, rotationAxis;

    /* calculate the vector tangent to movement */
    PolarToVec(start, start3D);
    PolarToVec(end, end3D);
    if (ortVector) {
        CrossProduct(start3D, end3D, ortVector);
        VectorNormalize(ortVector);
        CrossProduct(ortVector, start3D, tangentVector);
    } else {
        CrossProduct(start3D, end3D, v);
        CrossProduct(v, start3D, tangentVector);
    }
    VectorNormalize(tangentVector);

    /* smooth change of direction if the model is not idle */
    if (direction) {
        VectorSubtract(tangentVector, direction, v);
        const float dist = VectorLength(v);
        if (dist > 0.01) {
            CrossProduct(direction, tangentVector, rotationAxis);
            VectorNormalize(rotationAxis);
            RotatePointAroundVector(v, rotationAxis, direction, 5.0);
            VectorSubtract(tangentVector, direction, v);
            if (VectorLength(v) < dist)
                VectorCopy(direction, tangentVector);
            else
                VectorCopy(tangentVector, direction);
        }
    }

    VectorSet(rotationAxis, 0, 0, 1);
    RotatePointAroundVector(v, rotationAxis, tangentVector, - start[0]);
    VectorSet(rotationAxis, 0, 1, 0);
    RotatePointAroundVector(tangentVector, rotationAxis, v, start[1] + 90.0f);

    /* calculate the orientation angle of the model around axis perpendicular to the screen */
    float angle = todeg * atan(tangentVector[0] / tangentVector[1]);
    if (tangentVector[1] > 0)
        angle -= 90.0f;
    else
        angle += 90.0f;

    return angle;
}

float GEO_AngleOfPath (const vec2_t start, const vec2_t end, vec3_t direction, vec3_t ortVector)
{
    uiNode_t* node = geoscapeNode;
    if (!node)
        return 0.0f;

    const mapExtraData_t& data = UI_MAPEXTRADATA(node);
    if (!data.flatgeoscape)
        return GEO_AngleOfPath3D(start, end, direction, ortVector);
    return GEO_AngleOfPath2D(start, end, direction, ortVector);
}

static void GEO_ConvertObjectPositionToGeoscapePosition (bool flatgeoscape, float* vector, const vec2_t objectPos)
{
    if (flatgeoscape)
        Vector2Set(vector, objectPos[0], objectPos[1]);
    else
        VectorSet(vector, objectPos[0], -objectPos[1], 0);
}

static void GEO_GetMissionAngle (bool flatgeoscape, float* vector, int id)
{
    mission_t* mission = MIS_GetByIdx(id);
    if (mission == nullptr)
        return;
    GEO_ConvertObjectPositionToGeoscapePosition(flatgeoscape, vector, mission->pos);
    GEO_SelectMission(mission);
}

static void GEO_GetUFOAngle (bool flatgeoscape, float* vector, int idx)
{
    aircraft_t* ufo;

    /* Cycle through UFOs (only those visible on geoscape) */
    ufo = nullptr;
    while ((ufo = UFO_GetNextOnGeoscape(ufo)) != nullptr) {
        if (ufo->idx != idx)
            continue;
        GEO_ConvertObjectPositionToGeoscapePosition(flatgeoscape, vector, ufo->pos);
        GEO_SelectUFO(ufo);
        return;
    }
}


static void GEO_StartCenter (uiNode_t* node)
{
    mapExtraData_t& data = UI_MAPEXTRADATA(node);
    if (data.flatgeoscape) {
        /* case 2D geoscape */
        vec2_t diff;

        Vector2Set(data.smoothFinal2DGeoscapeCenter, 0.5f - data.smoothFinal2DGeoscapeCenter[0] / 360.0f,
                0.5f - data.smoothFinal2DGeoscapeCenter[1] / 180.0f);
        if (data.smoothFinal2DGeoscapeCenter[1] < 0.5 / ZOOM_LIMIT)
            data.smoothFinal2DGeoscapeCenter[1] = 0.5 / ZOOM_LIMIT;
        if (data.smoothFinal2DGeoscapeCenter[1] > 1.0 - 0.5 / ZOOM_LIMIT)
            data.smoothFinal2DGeoscapeCenter[1] = 1.0 - 0.5 / ZOOM_LIMIT;
        diff[0] = data.smoothFinal2DGeoscapeCenter[0] - data.center[0];
        diff[1] = data.smoothFinal2DGeoscapeCenter[1] - data.center[1];
        data.smoothDeltaLength = sqrt(diff[0] * diff[0] + diff[1] * diff[1]);
    } else {
        /* case 3D geoscape */
        vec3_t diff;

        data.smoothFinalGlobeAngle[1] += GLOBE_ROTATE;
        VectorSubtract(data.smoothFinalGlobeAngle, data.angles, diff);
        data.smoothDeltaLength = VectorLength(diff);
    }

    data.smoothFinalZoom = ZOOM_LIMIT;
    data.smoothDeltaZoom = fabs(data.smoothFinalZoom - data.zoom);
    data.smoothRotation = true;
}

void GEO_CenterPosition (const vec2_t pos)
{
    uiNode_t* node = geoscapeNode;
    if (!node)
        return;
    mapExtraData_t& data = UI_MAPEXTRADATA(node);
    const bool flatgeoscape = data.flatgeoscape;
    float* vector;
    if (flatgeoscape)
        vector = data.smoothFinal2DGeoscapeCenter;
    else
        vector = data.smoothFinalGlobeAngle;

    GEO_ConvertObjectPositionToGeoscapePosition(flatgeoscape, vector, pos);
    GEO_StartCenter(node);
}

static void GEO_SelectObject_f (void)
{
    uiNode_t* node = geoscapeNode;
    if (!node)
        return;

    if (cgi->Cmd_Argc() != 3) {
        cgi->Com_Printf("Usage: %s <mission|ufo> <id>\n", cgi->Cmd_Argv(0));
        return;
    }

    const char* type = cgi->Cmd_Argv(1);
    const int idx = atoi(cgi->Cmd_Argv(2));
    mapExtraData_t& data = UI_MAPEXTRADATA(node);
    const bool flatgeoscape = data.flatgeoscape;

    float* vector;
    if (flatgeoscape)
        vector = data.smoothFinal2DGeoscapeCenter;
    else
        vector = data.smoothFinalGlobeAngle;

    if (Q_streq(type, "mission"))
        GEO_GetMissionAngle(flatgeoscape, vector, idx);
    else if (Q_streq(type, "ufo"))
        GEO_GetUFOAngle(flatgeoscape, vector, idx);
    else {
        cgi->Com_Printf("GEO_SelectObject_f: type %s unsupported.", type);
        return;
    }
    GEO_StartCenter(node);
}

static void GEO_GetGeoscapeAngle (vec2_t pos)
{
    int counter = 0;
    int maxEventIdx;
    const int numMissions = CP_CountMissionOnGeoscape();
    aircraft_t* ufo;
    base_t* base;
    int numBases = B_GetCount();

    /* If the value of maxEventIdx is too big or to low, restart from beginning */
    maxEventIdx = numMissions + numBases + INS_GetCount() - 1;
    base = nullptr;
    while ((base = B_GetNext(base)) != nullptr) {
        AIR_ForeachFromBase(aircraft, base) {
            if (AIR_IsAircraftOnGeoscape(aircraft))
                maxEventIdx++;
        }
    }
    ufo = nullptr;
    while ((ufo = UFO_GetNextOnGeoscape(ufo)) != nullptr)
        maxEventIdx++;

    /* if there's nothing to center the view on, just go to 0,0 pos */
    if (maxEventIdx < 0) {
        Vector2Copy(vec2_origin, pos);
        return;
    }

    /* check centerOnEventIdx is within the bounds */
    if (centerOnEventIdx < 0)
        centerOnEventIdx = maxEventIdx;
    if (centerOnEventIdx > maxEventIdx)
        centerOnEventIdx = 0;

    /* Cycle through missions */
    if (centerOnEventIdx < numMissions) {
        MIS_Foreach(mission) {
            if (!mission->onGeoscape)
                continue;
            if (counter == centerOnEventIdx) {
                Vector2Copy(mission->pos, pos);
                GEO_SelectMission(mission);
                return;
            }
            counter++;
        }
    }
    counter = numMissions;

    /* Cycle through bases */
    if (centerOnEventIdx < numBases + counter) {
        base = nullptr;
        while ((base = B_GetNext(base)) != nullptr) {
            if (counter == centerOnEventIdx) {
                Vector2Copy(base->pos, pos);
                return;
            }
            counter++;
        }
    }
    counter += numBases;

    /* Cycle through installations */
    if (centerOnEventIdx < INS_GetCount() + counter) {
        INS_Foreach(inst) {
            if (counter == centerOnEventIdx) {
                Vector2Copy(inst->pos, pos);
                return;
            }
            counter++;
        }
    }
    counter += INS_GetCount();

    /* Cycle through aircraft (only those present on geoscape) */
    AIR_Foreach(aircraft) {
        if (AIR_IsAircraftOnGeoscape(aircraft)) {
            if (centerOnEventIdx == counter) {
                Vector2Copy(aircraft->pos, pos);
                GEO_SelectAircraft(aircraft);
                return;
            }
            counter++;
        }
    }

    /* Cycle through UFOs (only those visible on geoscape) */
    ufo = nullptr;
    while ((ufo = UFO_GetNextOnGeoscape(ufo)) != nullptr) {
        if (centerOnEventIdx == counter) {
            Vector2Copy(ufo->pos, pos);
            GEO_SelectUFO(ufo);
            return;
        }
        counter++;
    }
}

void GEO_CenterOnPoint_f (void)
{
    if (!Q_streq(cgi->UI_GetActiveWindowName(), "geoscape"))
        return;

    centerOnEventIdx++;

    uiNode_t* node = geoscapeNode;
    if (!node)
        return;

    vec2_t pos;
    GEO_GetGeoscapeAngle(pos);
    GEO_CenterPosition(pos);
}

#define BULLET_SIZE 1

static void GEO_DrawBullets (const uiNode_t* node, const vec3_t pos)
{
    int x, y;

    if (GEO_AllMapToScreen(node, pos, &x, &y, nullptr))
        cgi->R_DrawFill(x, y, BULLET_SIZE, BULLET_SIZE, yellow);
}

static void GEO_DrawBeam (const uiNode_t* node, const vec3_t start, const vec3_t end, const vec4_t color)
{
    int points[4];

    if (!GEO_AllMapToScreen(node, start, &(points[0]), &(points[1]), nullptr))
        return;
    if (!GEO_AllMapToScreen(node, end, &(points[2]), &(points[3]), nullptr))
        return;

    cgi->R_Color(color);
    cgi->R_DrawLine(points, 2.0);
    cgi->R_Color(nullptr);
}

static inline void GEO_RenderImage (int x, int y, const char* image)
{
    cgi->R_DrawImageCentered(x, y, image);
}

#define SELECT_CIRCLE_RADIUS    1.5f + 3.0f / UI_MAPEXTRADATACONST(node).zoom

static void GEO_DrawMapOneMission (const uiNode_t* node, const mission_t* mission)
{
    int x, y;
    const bool isCurrentSelectedMission = GEO_IsMissionSelected(mission);

    if (isCurrentSelectedMission)
        cgi->Cvar_Set("mn_mapdaytime", GEO_IsNight(mission->pos) ? _("Night") : _("Day"));

    if (!GEO_AllMapToScreen(node, mission->pos, &x, &y, nullptr))
        return;

    const mapExtraData_t& data = UI_MAPEXTRADATACONST(node);
    if (isCurrentSelectedMission) {
        /* Draw circle around the mission */
        if (data.flatgeoscape) {
            if (mission->active) {
                GEO_RenderImage(x, y, "pics/geoscape/circleactive");
            } else {
                GEO_RenderImage(x, y, "pics/geoscape/circle");
            }
        } else {
            if (!mission->active)
                GEO_MapDrawEquidistantPoints(node, mission->pos, SELECT_CIRCLE_RADIUS, yellow);
        }
    }

    /* Draw mission model (this must be called after drawing the selection circle so that the model is rendered on top of it)*/
    if (data.flatgeoscape) {
        GEO_RenderImage(x, y, "pics/geoscape/mission");
    } else {
        GEO_Draw3DMarkerIfVisible(node, mission->pos, defaultBaseAngle, MIS_GetModel(mission), 0);
    }

    cgi->UI_DrawString("f_verysmall", ALIGN_UL, x + 10, y, MIS_GetName(mission));
}

static void GEO_DrawRadarLineCoverage (const uiNode_t* node, const radar_t* radar, const vec2_t pos)
{
    const vec4_t color = {1., 1., 1., .4};
    GEO_MapDrawEquidistantPoints(node, pos, radar->range, color);
    GEO_MapDrawEquidistantPoints(node, pos, radar->trackingRange, color);
}

static void GEO_DrawRadarInMap (const uiNode_t* node, const radar_t* radar, const vec2_t pos)
{
    /* Show radar range zones */
    GEO_DrawRadarLineCoverage(node, radar, pos);

    /* everything below is drawn only if there is at least one detected UFO */
    if (!radar->numUFOs)
        return;

    /* Draw lines from radar to ufos sensored */
    int x, y;
    const bool display = GEO_AllMapToScreen(node, pos, &x, &y, nullptr);
    if (!display)
        return;

    screenPoint_t pts[2];
    pts[0].x = x;
    pts[0].y = y;

    /* Set color */
    const vec4_t color = {1., 1., 1., .3};
    cgi->R_Color(color);
    for (int i = 0; i < radar->numUFOs; i++) {
        const aircraft_t* ufo = radar->ufos[i];
        if (UFO_IsUFOSeenOnGeoscape(ufo) && GEO_AllMapToScreen(node, ufo->pos, &x, &y, nullptr)) {
            pts[1].x = x;
            pts[1].y = y;
            cgi->R_DrawLineStrip(2, (int*)pts);
        }
    }
    cgi->R_Color(nullptr);
}

static void GEO_DrawMapOneInstallation (const uiNode_t* node, const installation_t* installation,
    bool oneUFOVisible, const char* font)
{
    const installationTemplate_t* tpl = installation->installationTemplate;

    /* Draw weapon range if at least one UFO is visible */
    if (oneUFOVisible && AII_InstallationCanShoot(installation)) {
        for (int i = 0; i < tpl->maxBatteries; i++) {
            const aircraftSlot_t* slot = &installation->batteries[i].slot;
            if (slot->item && slot->ammoLeft != 0 && slot->installationTime == 0) {
                GEO_MapDrawEquidistantPoints(node, installation->pos,
                    slot->ammo->craftitem.stats[AIR_STATS_WRANGE], red);
            }
        }
    }

    /* Draw installation radar (only the "wire" style part) */
    if (GEO_IsRadarOverlayActivated())
        GEO_DrawRadarInMap(node, &installation->radar, installation->pos);

    int x, y;
    /* Draw installation */
    if (!UI_MAPEXTRADATACONST(node).flatgeoscape) {
        GEO_Draw3DMarkerIfVisible(node, installation->pos, defaultBaseAngle, tpl->model, 0);
    } else if (GEO_MapToScreen(node, installation->pos, &x, &y)) {
        GEO_RenderImage(x, y, tpl->image);
    }

    /* Draw installation names */
    if (GEO_AllMapToScreen(node, installation->pos, &x, &y, nullptr))
        cgi->UI_DrawString(font, ALIGN_UL, x, y + 10, installation->name);
}

static void GEO_DrawMapOneBase (const uiNode_t* node, const base_t* base,
    bool oneUFOVisible, const char* font)
{
    /* Draw weapon range if at least one UFO is visible */
    if (oneUFOVisible && AII_BaseCanShoot(base)) {
        int i;
        for (i = 0; i < base->numBatteries; i++) {
            const aircraftSlot_t* slot = &base->batteries[i].slot;
            if (slot->item && slot->ammoLeft != 0 && slot->installationTime == 0) {
                GEO_MapDrawEquidistantPoints(node, base->pos,
                    slot->ammo->craftitem.stats[AIR_STATS_WRANGE], red);
            }
        }
        for (i = 0; i < base->numLasers; i++) {
            const aircraftSlot_t* slot = &base->lasers[i].slot;
            if (slot->item && slot->ammoLeft != 0 && slot->installationTime == 0) {
                GEO_MapDrawEquidistantPoints(node, base->pos,
                    slot->ammo->craftitem.stats[AIR_STATS_WRANGE], red);
            }
        }
    }

    /* Draw base radar (only the "wire" style part) */
    if (GEO_IsRadarOverlayActivated())
        GEO_DrawRadarInMap(node, &base->radar, base->pos);

    int x, y;
    /* Draw base */
    if (!UI_MAPEXTRADATACONST(node).flatgeoscape) {
        if (B_IsUnderAttack(base))
            /* two skins - second skin is for baseattack */
            GEO_Draw3DMarkerIfVisible(node, base->pos, defaultBaseAngle, "geoscape/base", 1);
        else
            GEO_Draw3DMarkerIfVisible(node, base->pos, defaultBaseAngle, "geoscape/base", 0);
    } else if (GEO_MapToScreen(node, base->pos, &x, &y)) {
        if (B_IsUnderAttack(base))
            GEO_RenderImage(x, y, "pics/geoscape/baseattack");
        else
            GEO_RenderImage(x, y, "pics/geoscape/base");
    }

    /* Draw base names */
    if (GEO_AllMapToScreen(node, base->pos, &x, &y, nullptr))
        cgi->UI_DrawString(font, ALIGN_UL, x, y + 10, base->name);
}

static void GEO_DrawAircraftHealthBar (const uiNode_t* node, const aircraft_t* aircraft)
{
    const mapExtraData_t& data = UI_MAPEXTRADATACONST(node);
    const int width = 8 * data.zoom;
    const int height = 1 * data.zoom * 0.9f;
    vec4_t color;
    int centerX;
    int centerY;
    bool visible;

    if (!aircraft)
        return;
    if (aircraft->stats[AIR_STATS_DAMAGE] <= 0)
        return;

    if (((float)aircraft->damage / aircraft->stats[AIR_STATS_DAMAGE]) <= .33f) {
        Vector4Copy(red, color);
    } else if (((float)aircraft->damage / aircraft->stats[AIR_STATS_DAMAGE]) <= .75f) {
        Vector4Copy(yellow, color);
    } else {
        Vector4Copy(green, color);
    }

    if (!data.flatgeoscape)
        visible = GEO_3DMapToScreen(node, aircraft->pos, &centerX, &centerY, nullptr);
    else
        visible = GEO_AllMapToScreen(node, aircraft->pos, &centerX, &centerY, nullptr);

    if (visible) {
        const vec4_t bordercolor = {1, 1, 1, 1};
        cgi->R_DrawFill(centerX - width / 2 , centerY - 5 * data.zoom, round(width * ((float)aircraft->damage / aircraft->stats[AIR_STATS_DAMAGE])), height, color);
        cgi->R_DrawRect(centerX - width / 2, centerY - 5 * data.zoom, width, height, bordercolor, 1.0, 1);
    }
}

static void GEO_DrawMapOnePhalanxAircraft (const uiNode_t* node, aircraft_t* aircraft, bool oneUFOVisible)
{
    float angle;

    /* Draw aircraft radar (only the "wire" style part) */
    if (GEO_IsRadarOverlayActivated())
        GEO_DrawRadarInMap(node, &aircraft->radar, aircraft->pos);

    /* Draw only the bigger weapon range on geoscape: more detail will be given on airfight map */
    if (oneUFOVisible)
        GEO_MapDrawEquidistantPoints(node, aircraft->pos, aircraft->stats[AIR_STATS_WRANGE] / 1000.0f, red);

    const mapExtraData_t& data = UI_MAPEXTRADATACONST(node);
    /* Draw aircraft route */
    if (aircraft->status >= AIR_TRANSIT) {
        /* aircraft is moving */
        mapline_t path;

        path.numPoints = aircraft->route.numPoints - aircraft->point;
        if (path.numPoints > 1) {
            memcpy(path.point, aircraft->pos, sizeof(vec2_t));
            memcpy(path.point + 1, aircraft->route.point + aircraft->point + 1, (path.numPoints - 1) * sizeof(vec2_t));
            if (!data.flatgeoscape)
                GEO_3DMapDrawLine(node, &path);
            else
                GEO_MapDrawLine(node, &path);
        }
        angle = GEO_AngleOfPath(aircraft->pos, aircraft->route.point[aircraft->route.numPoints - 1], aircraft->direction, nullptr);
    } else {
        /* aircraft is idle */
        angle = 0.0f;
    }

    /* Draw a circle around selected aircraft */
    if (GEO_IsAircraftSelected(aircraft)) {
        int x;
        int y;

        if (!data.flatgeoscape)
            GEO_MapDrawEquidistantPoints(node, aircraft->pos, SELECT_CIRCLE_RADIUS, yellow);
        else {
            GEO_AllMapToScreen(node, aircraft->pos, &x, &y, nullptr);
            GEO_RenderImage(x, y, "pics/geoscape/circleactive");
        }

        /* Draw a circle around the ufo pursued by selected aircraft */
        if (aircraft->status == AIR_UFO && GEO_AllMapToScreen(node, aircraft->aircraftTarget->pos, &x, &y, nullptr)) {
            if (!data.flatgeoscape)
                GEO_MapDrawEquidistantPoints(node, aircraft->aircraftTarget->pos, SELECT_CIRCLE_RADIUS, yellow);
            else
                GEO_RenderImage(x, y, "pics/geoscape/circleactive");
        }
    }

    /* Draw aircraft (this must be called after drawing the selection circle so that the aircraft is drawn on top of it)*/
    GEO_Draw3DMarkerIfVisible(node, aircraft->pos, angle, aircraft->model, 0);

    if (oneUFOVisible || cgi->Cvar_GetInteger("debug_showcrafthealth") >= 1)
        GEO_DrawAircraftHealthBar(node, aircraft);
}

static const char* GEO_GetMissionText (char* buffer, size_t size, const mission_t* mission)
{
    assert(mission);
    Com_sprintf(buffer, size, _("Name: %s\nObjective: %s"),
        MIS_GetName(mission), (mission->mapDef) ? _(mission->mapDef->description) : _("Unknown"));
    return buffer;
}

static const char* GEO_GetAircraftText (char* buffer, size_t size, const aircraft_t* aircraft)
{
    if (aircraft->status == AIR_UFO) {
        const float distance = GetDistanceOnGlobe(aircraft->pos, aircraft->aircraftTarget->pos);
        Com_sprintf(buffer, size, _("Name:\t%s (%i/%i)\n"), aircraft->name, AIR_GetTeamSize(aircraft), aircraft->maxTeamSize);
        Q_strcat(buffer, size, _("Status:\t%s\n"), AIR_AircraftStatusToName(aircraft));
        if (aircraft->stats[AIR_STATS_DAMAGE] > 0)
            Q_strcat(buffer, size, _("Health:\t%3.0f%%\n"), (double)aircraft->damage * 100 / aircraft->stats[AIR_STATS_DAMAGE]);
        Q_strcat(buffer, size, _("Distance to target:\t\t%.0f\n"), distance);
        Q_strcat(buffer, size, _("Speed:\t%i km/h\n"), AIR_AircraftMenuStatsValues(aircraft->stats[AIR_STATS_SPEED], AIR_STATS_SPEED));
        Q_strcat(buffer, size, _("Fuel:\t%i/%i\n"), AIR_AircraftMenuStatsValues(aircraft->fuel, AIR_STATS_FUELSIZE),
            AIR_AircraftMenuStatsValues(aircraft->stats[AIR_STATS_FUELSIZE], AIR_STATS_FUELSIZE));
        Q_strcat(buffer, size, _("ETA:\t%sh\n"), CP_SecondConvert((float)DateTime::SECONDS_PER_HOUR * distance / aircraft->stats[AIR_STATS_SPEED]));
    } else {
        Com_sprintf(buffer, size, _("Name:\t%s (%i/%i)\n"), aircraft->name, AIR_GetTeamSize(aircraft), aircraft->maxTeamSize);
        Q_strcat(buffer, size, _("Status:\t%s\n"), AIR_AircraftStatusToName(aircraft));
        if (aircraft->stats[AIR_STATS_DAMAGE] > 0)
            Q_strcat(buffer, size, _("Health:\t%3.0f%%\n"), (double)aircraft->damage * 100 / aircraft->stats[AIR_STATS_DAMAGE]);
        Q_strcat(buffer, size, _("Speed:\t%i km/h\n"), AIR_AircraftMenuStatsValues(aircraft->stats[AIR_STATS_SPEED], AIR_STATS_SPEED));
        Q_strcat(buffer, size, _("Fuel:\t%i/%i\n"), AIR_AircraftMenuStatsValues(aircraft->fuel, AIR_STATS_FUELSIZE),
            AIR_AircraftMenuStatsValues(aircraft->stats[AIR_STATS_FUELSIZE], AIR_STATS_FUELSIZE));
        if (aircraft->status != AIR_IDLE) {
            const float distance = GetDistanceOnGlobe(aircraft->pos,
                    aircraft->route.point[aircraft->route.numPoints - 1]);
            Q_strcat(buffer, size, _("ETA:\t%sh\n"), CP_SecondConvert((float)DateTime::SECONDS_PER_HOUR * distance / aircraft->stats[AIR_STATS_SPEED]));
        }
    }
    return buffer;
}

static const char* GEO_GetUFOText (char* buffer, size_t size, const aircraft_t* ufo)
{
    Com_sprintf(buffer, size, "%s\n", UFO_GetName(ufo));
    Q_strcat(buffer, size, _("Speed: %i km/h\n"), AIR_AircraftMenuStatsValues(ufo->stats[AIR_STATS_SPEED], AIR_STATS_SPEED));
    return buffer;
}

void GEO_UpdateGeoscapeDock (void)
{
    char buf[512];
    aircraft_t* ufo;

    cgi->UI_ExecuteConfunc("clean_geoscape_object");

    /* draw mission pics */
    MIS_Foreach(mission) {
        if (!mission->onGeoscape)
            continue;
        cgi->UI_ExecuteConfunc("add_geoscape_object mission %i \"%s\" \"%s\n%s\"",
            mission->idx, MIS_GetModel(mission), MIS_GetName(mission),
            (mission->mapDef) ? _(mission->mapDef->description) : "");
    }

    /* draws ufos */
    ufo = nullptr;
    while ((ufo = UFO_GetNextOnGeoscape(ufo)) != nullptr) {
        const unsigned int ufoIDX = UFO_GetGeoscapeIDX(ufo);
        cgi->UI_ExecuteConfunc("add_geoscape_object ufo %i %s \"%s\"",
                ufoIDX, ufo->model, GEO_GetUFOText(buf, sizeof(buf), ufo));
    }
}

void GEO_DrawMarkers (const uiNode_t* node)
{
    const char* font;
    aircraft_t* ufo;
    base_t* base;

    const vec4_t white = {1.f, 1.f, 1.f, 0.7f};
    int maxInterpolationPoints;

    assert(node);

    /* font color on geoscape */
    cgi->R_Color(node->color);
    /* default font */
    font = cgi->UI_GetFontFromNode(node);

    /* check if at least 1 UFO is visible */
    const bool oneUFOVisible = UFO_GetNextOnGeoscape(nullptr) != nullptr;

    /* draw mission pics */
    MIS_Foreach(mission) {
        if (!mission->onGeoscape)
            continue;
        GEO_DrawMapOneMission(node, mission);
    }

    /* draw installations */
    INS_Foreach(installation) {
        GEO_DrawMapOneInstallation(node, installation, oneUFOVisible, font);
    }

    /* draw bases */
    base = nullptr;
    while ((base = B_GetNext(base)) != nullptr)
        GEO_DrawMapOneBase(node, base, oneUFOVisible, font);

    /* draw all aircraft */
    AIR_Foreach(aircraft) {
        if (AIR_IsAircraftOnGeoscape(aircraft))
            GEO_DrawMapOnePhalanxAircraft(node, aircraft, oneUFOVisible);
    }

    /* draws ufos */
    ufo = nullptr;
    while ((ufo = UFO_GetNextOnGeoscape(ufo)) != nullptr) {
#ifdef DEBUG
        /* in debug mode you execute set showufos 1 to see the ufos on geoscape */
        if (cgi->Cvar_GetInteger("debug_showufos")) {
            /* Draw ufo route */
            if (!UI_MAPEXTRADATACONST(node).flatgeoscape)
                GEO_3DMapDrawLine(node, &ufo->route);
            else
                GEO_MapDrawLine(node, &ufo->route);
        } else
#endif
        {
            const float angle = GEO_AngleOfPath(ufo->pos, ufo->route.point[ufo->route.numPoints - 1], ufo->direction, nullptr);
            const mapExtraData_t& data = UI_MAPEXTRADATACONST(node);

            if (!data.flatgeoscape)
                GEO_MapDrawEquidistantPoints(node, ufo->pos, SELECT_CIRCLE_RADIUS, white);

            if (GEO_IsUFOSelected(ufo)) {
                if (!data.flatgeoscape) {
                    GEO_MapDrawEquidistantPoints(node, ufo->pos, SELECT_CIRCLE_RADIUS, yellow);
                } else {
                    int x, y;
                    GEO_AllMapToScreen(node, ufo->pos, &x, &y, nullptr);
                    GEO_RenderImage(x, y, "pics/geoscape/circleactive");
                }
            }
            GEO_Draw3DMarkerIfVisible(node, ufo->pos, angle, ufo->model, 0);

            if (RS_IsResearched_ptr(ufo->tech)
             || cgi->Cvar_GetInteger("debug_showcrafthealth") >= 1)
                GEO_DrawAircraftHealthBar(node, ufo);
        }
    }

    if (ccs.gameTimeScale > 0)
        maxInterpolationPoints = floor(1.0f / (ccs.frametime * (float)ccs.gameTimeScale));
    else
        maxInterpolationPoints = 0;

    /* draws projectiles */
    for (int i = 0; i < ccs.numProjectiles; i++) {
        aircraftProjectile_t* projectile = &ccs.projectiles[i];
        vec3_t drawPos = {0, 0, 0};

        if (projectile->hasMoved) {
            projectile->hasMoved = false;
            VectorCopy(projectile->pos[0], drawPos);
        } else {
            if (maxInterpolationPoints > 2 && projectile->numInterpolationPoints < maxInterpolationPoints) {
                /* If a new point hasn't been given and there is at least 3 points need to be filled in then
                 * use linear interpolation to draw the points until a new projectile point is provided.
                 * The reason you need at least 3 points is that acceptable results can be achieved with 2 or less
                 * gaps in points so don't add the overhead of interpolation. */
                const float xInterpolStep = (projectile->projectedPos[0][0] - projectile->pos[0][0]) / (float)maxInterpolationPoints;
                projectile->numInterpolationPoints += 1;
                drawPos[0] = projectile->pos[0][0] + (xInterpolStep * projectile->numInterpolationPoints);
                LinearInterpolation(projectile->pos[0], projectile->projectedPos[0], drawPos[0], drawPos[1]);
            } else {
                VectorCopy(projectile->pos[0], drawPos);
            }
        }

        if (projectile->bullets) {
            GEO_DrawBullets(node, drawPos);
        } else if (projectile->beam) {
            vec3_t start;
            vec3_t end;

            if (projectile->attackingAircraft)
                VectorCopy(projectile->attackingAircraft->pos, start);
            else
                VectorCopy(projectile->attackerPos, start);

            if (projectile->aimedAircraft)
                VectorCopy(projectile->aimedAircraft->pos, end);
            else
                VectorCopy(projectile->idleTarget, end);

            GEO_DrawBeam(node, start, end, projectile->aircraftItem->craftitem.beamColor);
        } else {
            GEO_Draw3DMarkerIfVisible(node, drawPos, projectile->angle, projectile->aircraftItem->model, 0);
        }
    }

    const bool showXVI = CP_IsXVIVisible();
    static char buffer[512];

    /* Draw nation names */
    buffer[0] = 0;
    NAT_Foreach(nation) {
        int x, y;
        if (GEO_AllMapToScreen(node, nation->pos, &x, &y, nullptr))
            cgi->UI_DrawString("f_verysmall", ALIGN_UC, x , y, _(nation->name));
        if (showXVI) {
            const nationInfo_t* stats = NAT_GetCurrentMonthInfo(nation);
            Q_strcat(buffer, sizeof(buffer), _("%s\t%i%%\n"), _(nation->name), stats->xviInfection);
        }
    }

    if (showXVI)
        cgi->UI_RegisterText(TEXT_XVI, buffer);
    else
        cgi->UI_ResetData(TEXT_XVI);

    cgi->R_Color(nullptr);
}

void GEO_Draw (geoscapeData_t* data)
{
    if (!CP_IsRunning()) {
        data->active = false;
        return;
    }

    data->active = true;
    data->map = ccs.curCampaign->map;
    data->nationOverlay = GEO_IsNationOverlayActivated();
    data->xviOverlay = GEO_IsXVIOverlayActivated();
    data->radarOverlay = GEO_IsRadarOverlayActivated();
    data->date = ccs.date;

    geoscapeNode = static_cast<uiNode_t* >(data->geoscapeNode);

    mission_t* mission = GEO_GetSelectedMission();
    /* display text */
    cgi->UI_ResetData(TEXT_STANDARD);
    switch (ccs.mapAction) {
    case MA_NEWBASE:
        cgi->UI_RegisterText(TEXT_STANDARD, _("Select the desired location of the new base on the map.\n"));
        return;
    case MA_NEWINSTALLATION:
        cgi->UI_RegisterText(TEXT_STANDARD, _("Select the desired location of the new installation on the map.\n"));
        return;
    case MA_NONE:
        break;
    }

    /* Nothing is displayed yet */
    if (mission) {
        cgi->UI_RegisterText(TEXT_STANDARD, GEO_GetMissionText(textStandard, sizeof(textStandard), mission));
    } else if (GEO_GetSelectedAircraft() != nullptr) {
        const aircraft_t* aircraft = GEO_GetSelectedAircraft();
        if (AIR_IsAircraftInBase(aircraft)) {
            cgi->UI_RegisterText(TEXT_STANDARD, nullptr);
            GEO_ResetAction();
            return;
        }
        cgi->UI_RegisterText(TEXT_STANDARD, GEO_GetAircraftText(textStandard, sizeof(textStandard), aircraft));
    } else if (GEO_GetSelectedUFO() != nullptr) {
        cgi->UI_RegisterText(TEXT_STANDARD, GEO_GetUFOText(textStandard, sizeof(textStandard), GEO_GetSelectedUFO()));
    } else {
#ifdef DEBUG
        if (debug_showInterest->integer) {
            static char t[64];
            Com_sprintf(t, lengthof(t), "Interest level: %i\n", ccs.overallInterest);
            cgi->UI_RegisterText(TEXT_STANDARD, t);
        } else
#endif
        cgi->UI_RegisterText(TEXT_STANDARD, "");
    }
}

void GEO_ResetAction (void)
{
    /* don't allow a reset when no base is set up */
    if (B_AtLeastOneExists())
        ccs.mapAction = MA_NONE;

    GEO_SetInterceptorAircraft(nullptr);
    GEO_SetSelectedMission(nullptr);
    GEO_SetSelectedAircraft(nullptr);
    GEO_SetSelectedUFO(nullptr);

    if (!radarOverlayWasSet)
        GEO_SetOverlay("radar", 0);
}

void GEO_SelectUFO (aircraft_t* ufo)
{
    GEO_ResetAction();
    GEO_SetSelectedUFO(ufo);
}

void GEO_SelectAircraft (aircraft_t* aircraft)
{
    GEO_ResetAction();
    GEO_SetSelectedAircraft(aircraft);
}

mission_t* GEO_SelectMission (mission_t* mission)
{
    if (!mission || GEO_IsMissionSelected(mission))
        return GEO_GetSelectedMission();
    GEO_ResetAction();
    GEO_SetSelectedMission(mission);
    return GEO_GetSelectedMission();
}

void GEO_NotifyMissionRemoved (const mission_t* mission)
{
    /* Unselect the current selected mission if it's the same */
    if (GEO_IsMissionSelected(mission))
        GEO_ResetAction();

    GEO_UpdateGeoscapeDock();
}

void GEO_NotifyUFORemoved (const aircraft_t* ufo, bool destroyed)
{
    GEO_UpdateGeoscapeDock();

    if (GEO_GetSelectedUFO() == nullptr)
        return;

    /* Unselect the current selected ufo if it's the same */
    if (GEO_IsUFOSelected(ufo))
        GEO_ResetAction();
    else if (destroyed && ccs.geoscape.selectedUFO > ufo)
        ccs.geoscape.selectedUFO--;
}

void GEO_NotifyAircraftRemoved (const aircraft_t* aircraft)
{
    /* Unselect the current selected ufo if its the same */
    if (GEO_IsAircraftSelected(aircraft) || GEO_IsInterceptorSelected(aircraft))
        GEO_ResetAction();
}

nation_t* GEO_GetNation (const vec2_t pos)
{
    const byte* color = GEO_GetColor(pos, MAPTYPE_NATIONS, nullptr);
    const vec3_t fcolor = {color[0] / 255.0f, color[1] / 255.0f, color[2] / 255.0f};
#ifdef PARANOID
    cgi->Com_DPrintf(DEBUG_CLIENT, "GEO_GetNation: color value for %.0f:%.0f is r:%i, g:%i, b: %i\n", pos[0], pos[1], color[0], color[1], color[2]);
#endif
    NAT_Foreach(nation) {
        /* compare the first three color values with color value at pos */
        /* 0.02 x 255 = 5.1, which allow a variation of +-5 for each color components */
        if (VectorEqualEpsilon(nation->color, fcolor, 0.02))
            return nation;
    }
    cgi->Com_DPrintf(DEBUG_CLIENT, "GEO_GetNation: No nation found at %.0f:%.0f - color: %i:%i:%i\n", pos[0], pos[1], color[0], color[1], color[2]);
    return nullptr;
}

static const char* GEO_GetCultureType (const byte* color)
{
    if (MapIsWater(color))
        return "water";
    else if (MapIsEastern(color))
        return "eastern";
    else if (MapIsWestern(color))
        return "western";
    else if (MapIsOriental(color))
        return "oriental";
    else if (MapIsAfrican(color))
        return "african";
    return "western";
}

static const char* GEO_GetPopulationType (const byte* color)
{
    if (MapIsWater(color))
        return "water";
    else if (MapIsUrban(color))
        return "urban";
    else if (MapIsSuburban(color))
        return "suburban";
    else if (MapIsVillage(color))
        return "village";
    else if (MapIsRural(color))
        return "rural";
    return "nopopulation";
}

static inline const char* GEO_GetTerrainTypeByPos (const vec2_t pos, bool* coast)
{
    const byte* color = GEO_GetColor(pos, MAPTYPE_TERRAIN, coast);
    return cgi->csi->terrainDefs.getTerrainName(color);
}

static inline const char* GEO_GetCultureTypeByPos (const vec2_t pos)
{
    const byte* color = GEO_GetColor(pos, MAPTYPE_CULTURE, nullptr);
    return GEO_GetCultureType(color);
}

static inline const char* GEO_GetPopulationTypeByPos (const vec2_t pos)
{
    const byte* color = GEO_GetColor(pos, MAPTYPE_POPULATION, nullptr);
    return GEO_GetPopulationType(color);
}

int GEO_GetCivilianNumberByPosition (const vec2_t pos)
{
    const byte* color = GEO_GetColor(pos, MAPTYPE_POPULATION, nullptr);

    if (MapIsWater(color))
        cgi->Com_Error(ERR_DROP, "GEO_GetPopulationType: Trying to get number of civilian in a position on water");

    if (MapIsUrban(color))
        return 10;
    else if (MapIsSuburban(color))
        return 8;
    else if (MapIsVillage(color))
        return 6;
    else if (MapIsRural(color))
        return 4;
    else if (MapIsNopopulation(color))
        return 2;

    return 0;
}

void GEO_PrintParameterStringByPos (const vec2_t pos)
{
    bool coast = false;
    const char* terrainType = GEO_GetTerrainTypeByPos(pos, &coast);
    const char* cultureType = GEO_GetCultureTypeByPos(pos);
    const char* populationType = GEO_GetPopulationTypeByPos(pos);

    cgi->Com_Printf("      (Terrain: %s, Culture: %s, Population: %s, Coast: %s)\n",
        terrainType, cultureType, populationType, coast ? "true" : "false");
}

void GEO_CheckPositionBoundaries (float* pos)
{
    while (pos[0] > 180.0)
        pos[0] -= 360.0;
    while (pos[0] < -180.0)
        pos[0] += 360.0;
    while (pos[1] > 90.0)
        pos[1] -= 180.0;
    while (pos[1] < -90.0)
        pos[1] += 180.0;
}

bool GEO_IsNight (const vec2_t pos)
{
    float p, q, a, root, x;

    /* set p to hours (we don't use ccs.day here because we need a float value) */
    p = (float) ccs.date.getTimeAsSeconds() / DateTime::SECONDS_PER_DAY;
    /* convert current day to angle (-pi on 1st january, pi on 31 december) */
    q = (ccs.date.getDateAsDays() + p) * (2 * M_PI / DateTime::DAYS_PER_YEAR_AVG) - M_PI;
    p = (0.5 + pos[0] / 360 - p) * (2 * M_PI) - q;
    a = -sin(pos[1] * torad);
    root = sqrt(1.0 - a * a);
    x = sin(p) * root * sin(q) - (a * SIN_ALPHA + cos(p) * root * COS_ALPHA) * cos(q);
    return (x > 0);
}

const byte* GEO_GetColor (const vec2_t pos, mapType_t type, bool* coast)
{
    int x, y;
    int width, height;
    const byte* mask;
    const byte* color;

    switch (type) {
    case MAPTYPE_TERRAIN:
        mask = terrainPic;
        width = terrainWidth;
        height = terrainHeight;
        break;
    case MAPTYPE_CULTURE:
        mask = culturePic;
        width = cultureWidth;
        height = cultureHeight;
        break;
    case MAPTYPE_POPULATION:
        mask = populationPic;
        width = populationWidth;
        height = populationHeight;
        break;
    case MAPTYPE_NATIONS:
        mask = nationsPic;
        width = nationsWidth;
        height = nationsHeight;
        break;
    default:
        cgi->Com_Error(ERR_DROP, "Unknown maptype %i\n", type);
    }

    assert(mask);

    assert(pos[0] >= -180);
    assert(pos[0] <= 180);
    assert(pos[1] >= -90);
    assert(pos[1] <= 90);

    /* get coordinates */
    x = (180 - pos[0]) / 360 * width;
    x--; /* we start from 0 */
    y = (90 - pos[1]) / 180 * height;
    y--; /* we start from 0 */
    if (x < 0)
        x = 0;
    if (y < 0)
        y = 0;

    /* 4 => RGBA */
    /* terrainWidth is the width of the image */
    /* this calculation returns the pixel in col x and in row y */
    assert(4 * (x + y * width) < width * height * 4);
    color = mask + 4 * (x + y * width);
    if (coast != nullptr) {
        if (MapIsWater(color)) {
            *coast = false;
        } else {
            /* only check four directions */
            const int gap = 4;
            if (x > gap) {
                const byte* coastCheck = mask + 4 * ((x - gap) + y * width);
                *coast = MapIsWater(coastCheck);
            }
            if (!*coast && x < width - 1 - gap) {
                const byte* coastCheck = mask + 4 * ((x + gap) + y * width);
                *coast = MapIsWater(coastCheck);
            }

            if (!*coast) {
                if (y > gap) {
                    const byte* coastCheck = mask + 4 * (x + (y - gap) * width);
                    *coast = MapIsWater(coastCheck);
                }
                if (!*coast && y < height - 1 - gap) {
                    const byte* coastCheck = mask + 4 * (x + (y + gap) * width);
                    *coast = MapIsWater(coastCheck);
                }
            }
        }
    }

    return color;
}

static const float MIN_DIST_BASE = 4.0f;

base_t* GEO_PositionCloseToBase (const vec2_t pos)
{
    base_t* base = nullptr;
    while ((base = B_GetNext(base)) != nullptr)
        if (GetDistanceOnGlobe(pos, base->pos) < MIN_DIST_BASE)
            return base;

    return nullptr;
}

bool GEO_PositionFitsTCPNTypes (const vec2_t pos, const linkedList_t* terrainTypes, const linkedList_t* cultureTypes, const linkedList_t* populationTypes, const linkedList_t* nations)
{
    bool coast = false;
    const char* terrainType = GEO_GetTerrainTypeByPos(pos, &coast);
    const char* cultureType = GEO_GetCultureTypeByPos(pos);
    const char* populationType = GEO_GetPopulationTypeByPos(pos);

    if (MapIsWater(GEO_GetColor(pos, MAPTYPE_TERRAIN, nullptr)))
        return false;

    if (!terrainTypes || cgi->LIST_ContainsString(terrainTypes, terrainType) || (coast && cgi->LIST_ContainsString(terrainTypes, "coast"))) {
        if (!cultureTypes || cgi->LIST_ContainsString(cultureTypes, cultureType)) {
            if (!populationTypes || cgi->LIST_ContainsString(populationTypes, populationType)) {
                const nation_t* nationAtPos = GEO_GetNation(pos);
                if (!nations)
                    return true;
                if (nationAtPos && (!nations || cgi->LIST_ContainsString(nations, nationAtPos->id))) {
                    return true;
                }
            }
        }
    }

    return false;
}


void CP_GetRandomPosOnGeoscape (vec2_t pos, bool noWater)
{
    do {
        pos[0] = (frand() - 0.5f) * 360.0f;
        pos[1] = asin((frand() - 0.5f) * 2.0f) * todeg;
    } while (noWater && MapIsWater(GEO_GetColor(pos, MAPTYPE_TERRAIN, nullptr)));

    cgi->Com_DPrintf(DEBUG_CLIENT, "CP_GetRandomPosOnGeoscape: Get random position on geoscape %.2f:%.2f\n", pos[0], pos[1]);
}

bool CP_GetRandomPosOnGeoscapeWithParameters (vec2_t pos, const linkedList_t* terrainTypes, const linkedList_t* cultureTypes, const linkedList_t* populationTypes, const linkedList_t* nations)
{
    float x, y;
    int num;
    int randomNum;

    /* RASTER might reduce amount of tested locations to get a better performance */
    /* Number of points in latitude and longitude that will be tested. Therefore, the total number of position tried
     * will be numPoints * numPoints */
    const float numPoints = 360.0 / RASTER;
    /* RASTER is minimizing the amount of locations, so an offset is introduced to enable access to all locations, depending on a random factor */
    const float offsetX = frand() * RASTER;
    const float offsetY = -1.0 + frand() * 2.0 / numPoints;
    vec2_t posT;
    int hits = 0;

    /* check all locations for suitability in 2 iterations */
    /* prepare 1st iteration */

    /* ITERATION 1 */
    for (y = 0; y < numPoints; y++) {
        const float posY = asin(2.0 * y / numPoints + offsetY) * todeg; /* Use non-uniform distribution otherwise we favour the poles */
        for (x = 0; x < numPoints; x++) {
            const float posX = x * RASTER - 180.0 + offsetX;

            Vector2Set(posT, posX, posY);

            if (GEO_PositionFitsTCPNTypes(posT, terrainTypes, cultureTypes, populationTypes, nations)) {
                /* the location given in pos belongs to the terrain, culture, population types and nations
                 * that are acceptable, so count it */
                hits++;
            }
        }
    }

    /* if there have been no hits, the function failed to find a position */
    if (hits == 0)
        return false;

    /* the 2nd iteration goes through the locations again, but does so only until a random point */
    /* prepare 2nd iteration */
    randomNum = num = rand() % hits;

    /* ITERATION 2 */
    for (y = 0; y < numPoints; y++) {
        const float posY = asin(2.0 * y / numPoints + offsetY) * todeg;
        for (x = 0; x < numPoints; x++) {
            const float posX = x * RASTER - 180.0 + offsetX;

            Vector2Set(posT, posX, posY);

            if (GEO_PositionFitsTCPNTypes(posT, terrainTypes, cultureTypes, populationTypes, nations)) {
                num--;

                if (num < 1) {
                    Vector2Set(pos, posX, posY);
                    cgi->Com_DPrintf(DEBUG_CLIENT, "CP_GetRandomPosOnGeoscapeWithParameters: New random coords for a mission are %.0f:%.0f, chosen as #%i out of %i possible locations\n",
                        pos[0], pos[1], randomNum, hits);
                    return true;
                }
            }
        }
    }

    cgi->Com_DPrintf(DEBUG_CLIENT, "CP_GetRandomPosOnGeoscapeWithParameters: New random coordinates for a mission are %.0f:%.0f, chosen as #%i out of %i possible locations\n",
        pos[0], pos[1], num, hits);

    /* Make sure that position is within bounds */
    assert(pos[0] >= -180);
    assert(pos[0] <= 180);
    assert(pos[1] >= -90);
    assert(pos[1] <= 90);

    return true;
}

void GEO_Shutdown (void)
{
    cgi->Free(terrainPic);
    terrainPic = nullptr;

    cgi->Free(culturePic);
    culturePic = nullptr;

    cgi->Free(populationPic);
    populationPic = nullptr;

    cgi->Free(nationsPic);
    nationsPic = nullptr;
}

void GEO_Init (const char* map)
{
    /* load terrain mask */
    cgi->R_LoadImage(va("pics/geoscape/%s_terrain", map), &terrainPic, &terrainWidth, &terrainHeight);
    if (!terrainPic || !terrainWidth || !terrainHeight)
        cgi->Com_Error(ERR_DROP, "Couldn't load map mask %s_terrain in pics/geoscape", map);

    /* load culture mask */
    cgi->R_LoadImage(va("pics/geoscape/%s_culture", map), &culturePic, &cultureWidth, &cultureHeight);
    if (!culturePic || !cultureWidth || !cultureHeight)
        cgi->Com_Error(ERR_DROP, "Couldn't load map mask %s_culture in pics/geoscape", map);

    /* load population mask */
    cgi->R_LoadImage(va("pics/geoscape/%s_population", map), &populationPic, &populationWidth, &populationHeight);
    if (!populationPic || !populationWidth || !populationHeight)
        cgi->Com_Error(ERR_DROP, "Couldn't load map mask %s_population in pics/geoscape", map);

    /* load nations mask */
    cgi->R_LoadImage(va("pics/geoscape/%s_nations", map), &nationsPic, &nationsWidth, &nationsHeight);
    if (!nationsPic || !nationsWidth || !nationsHeight)
        cgi->Com_Error(ERR_DROP, "Couldn't load map mask %s_nations in pics/geoscape", map);
}

void GEO_Reset (const char* map)
{
    GEO_Shutdown();
    GEO_Init(map);
    GEO_ResetAction();
    GEO_UpdateGeoscapeDock();
}

void GEO_NotifyUFODisappear (const aircraft_t* ufo)
{
    /* Unselect the currently selected ufo if it's the same */
    if (GEO_IsUFOSelected(ufo))
        GEO_ResetAction();

    GEO_UpdateGeoscapeDock();
}

void GEO_SetOverlay (const char* overlayID, int status)
{
    if (Q_streq(overlayID, "nation")) {
        cgi->Cvar_SetValue("geo_overlay_nation", status);
        return;
    }

    /* do nothing while the first base is not build */
    if (!B_AtLeastOneExists())
        return;

    if (Q_streq(overlayID, "xvi")) {
        cgi->Cvar_SetValue("geo_overlay_xvi", status);
    }
    if (Q_streq(overlayID, "radar")) {
        cgi->Cvar_SetValue("geo_overlay_radar", status);
        if (GEO_IsRadarOverlayActivated())
            RADAR_UpdateWholeRadarOverlay();
    }
}

static void GEO_SetOverlay_f (void)
{
    if (cgi->Cmd_Argc() != 3) {
        cgi->Com_Printf("Usage: %s <nation|xvi|radar> <1|0>\n", cgi->Cmd_Argv(0));
        return;
    }

    const char* overlay = cgi->Cmd_Argv(1);
    const int status = atoi(cgi->Cmd_Argv(2));
    const bool setRadar = Q_streq(overlay, "radar");
    GEO_SetOverlay(overlay, status);

    /* save last decision player took on radar display, in order to be able to restore it later */
    if (setRadar)
        radarOverlayWasSet = GEO_IsRadarOverlayActivated();
}

void GEO_InitStartup (void)
{
    cgi->Cmd_AddCommand("geo_setoverlay", GEO_SetOverlay_f, "Set the geoscape overlay");
    cgi->Cmd_AddCommand("map_selectobject", GEO_SelectObject_f, "Select an object and center on it");
    cgi->Cmd_AddCommand("mn_mapaction_reset", GEO_ResetAction, nullptr);

#ifdef DEBUG
    debug_showInterest = cgi->Cvar_Get("debug_showinterest", "0", CVAR_DEVELOPER, "Shows the global interest value on geoscape");
#endif
}