#include <ultra64.h>
#include <macros.h>
#include <defines.h>
#include <debug.h>
#include <PR/gu.h>

#include "main.h"
#include "variables.h"
#include "types.h"
#include "camera.h"
#include "memory.h"
#include "math_util.h"
#include "code_80280000.h"
#include "code_80281780.h"
#include "skybox_and_splitscreen.h"
#include <config.h>
#include "code_80091750.h"
#include "code_8006E9C0.h"
#include "code_800029B0.h"
#include "ceremony_and_credits.h"
#include "code_80281C40.h"
#include "code_80057C60.h"
#include "actors.h"
#include "render_courses.h"

void func_80280000(void) {
    func_802966A0();
    func_80059AC8();
    func_80059AC8();
    func_8005A070();
}

void func_80280038(void) {
    u16 perspNorm;
    Camera *camera = &cameras[0];
    UNUSED s32 pad;
    Mat4 matrix;

    D_80150112 = 0;
    D_80164AF0 = 0;
    D_8018D120 = 0;
    init_rdp();
    func_802A53A4();
    init_rdp();
    func_80057FC4(0);
    
    gSPSetGeometryMode(gDisplayListHead++, G_ZBUFFER | G_SHADE | G_CULL_BACK | G_SHADING_SMOOTH);
    guPerspective(&gGfxPool->mtxPool[1], &perspNorm, D_80150130[0], D_80150148, D_80150150, D_8015014C, 1.0f);
    gDPHalf1(gDisplayListHead++, perspNorm);
    gSPMatrix(gDisplayListHead++, VIRTUAL_TO_PHYSICAL(&gGfxPool->mtxPool[1]), G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_PROJECTION);
    guLookAt(&gGfxPool->mtxPool[7], camera->pos[0], camera->pos[1], camera->pos[2], camera->lookAt[0], camera->lookAt[1], camera->lookAt[2], camera->up[0], camera->up[1], camera->up[2]);
    gSPMatrix(gDisplayListHead++, VIRTUAL_TO_PHYSICAL(&gGfxPool->mtxPool[7]), G_MTX_NOPUSH | G_MTX_MUL | G_MTX_PROJECTION);
    gCurrentCourseId = gCreditsCourseId;
    mtxf_identity(matrix);
    func_802B4FF8(matrix, 0);
    func_80295A38(D_800DC5EC);
    func_802A3008(D_800DC5EC);
    func_80058090(0);
    func_80058538(0);
    transition_sliding_borders();
    func_80281C40();
    init_rdp();
    func_80093F10();
    init_rdp();
}

void func_80280268(s32 arg0) {
    gIsInQuitToMenuTransition = 1;
    gQuitToMenuTransitionCounter = 5;
    D_802874A0 = 1;
    if ((arg0 < 0) || ((arg0 >= 20))) {
        arg0 = 0;
    }
    gCreditsCourseId = arg0;
}

void credits_loop(void) {
    Camera *camera = &cameras[0];
	
    f32 temp_f12;
    f32 temp;
    f32 temp_f14;

    D_802874A0 = 0;
    if (gIsInQuitToMenuTransition) {
        gQuitToMenuTransitionCounter--;
        if (gQuitToMenuTransitionCounter == 0) {
            gIsInQuitToMenuTransition = 0;
            gGamestateNext = CREDITS_SEQUENCE;
            gGamestate = 255;
        }
    } else {

        D_802874FC = 0;
        func_80283648(camera);
        temp_f12 = camera->lookAt[0] - camera->pos[0];
        temp = camera->lookAt[1] - camera->pos[1];
        temp_f14 = camera->lookAt[2] - camera->pos[2];
        camera->rot[1] = atan2s(temp_f12, temp_f14);
        camera->rot[0] = atan2s(sqrtf((temp_f12 * temp_f12) + (temp_f14 * temp_f14)), temp);
        camera->rot[2] = 0;
        if (D_802874A0 != 0) {
            D_800DC5E4++;
        } else {
            func_80280000();
            func_80280038();
#if DVDL
			display_dvdl();
#endif
            gDPFullSync(gDisplayListHead++);
            gSPEndDisplayList(gDisplayListHead++);
        }
    }
}

void load_credits(void) {
    Camera *camera = &cameras[0];

    gCurrentCourseId = gCreditsCourseId;
    D_800DC5B4 = 1;
    D_800DC518 = 1;
    func_802A4D18();
    func_802A74BC();
    camera->unk_B4 = 60.0f;
    D_80150130[0] = 60.0f;
    D_800DC5EC->screenWidth = SCREEN_WIDTH;
    D_800DC5EC->screenHeight = SCREEN_HEIGHT;
    D_800DC5EC->screenStartX = 160;
    D_800DC5EC->screenStartY = 120;
    gScreenModeSelection = SCREEN_MODE_1P;
    gActiveScreenMode = SCREEN_MODE_1P;
    gNextFreeMemoryAddress = D_8015F734;
    load_course(gCurrentCourseId);
    D_8015F730 = gNextFreeMemoryAddress;
    set_segment_base_addr(0xB, (void *) decompress_segments((u8 *)&_data_821D10SegmentRomStart, (u8 *)&_data_825800SegmentRomStart));
    D_8015F6EA = -0x15A1;
    D_8015F6EE = -0x15A1;
    D_8015F6F2 = -0x15A1;
    D_8015F6E8 = 0x15A1;
    D_8015F6EC = 0x15A1;
    D_8015F6F0 = 0x15A1;
    D_8015F59C = 0;
    D_8015F5A0 = 0;
    D_8015F58C = 0;
    D_8015F588 = 0;
    D_800DC5BC = 0;
    D_800DC5C8 = 0;
    D_8015F580 = (mk64_surface_map_ram *) gNextFreeMemoryAddress;
    camera->pos[0] = 1400.0f;
    camera->pos[1] = 300.0f;
    camera->pos[2] = 1400.0f;
    camera->lookAt[0] = 0.0f;
    camera->lookAt[1] = 0.0f;
    camera->lookAt[2] = 0.0f;
    camera->up[0] = 0.0f;
    camera->up[1] = 1.0f;
    camera->up[2] = 0.0f;
    init_cinematic_camera();
    func_80003040();
    func_8006E9C0();
    func_80093E60();
    func_80092688();
    if (D_800DC5EC) {}
    D_801625F8 = ((s32)gHeapEndPtr - gNextFreeMemoryAddress);
    D_801625FC = ((f32)D_801625F8 / 1000.0f);
}