#pragma region Copyright (c) 2014-2016 OpenRCT2 Developers
/*****************************************************************************
 * OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
 *
 * OpenRCT2 is the work of many authors, a full list can be found in contributors.md
 * For more information, visit https://github.com/OpenRCT2/OpenRCT2
 *
 * OpenRCT2 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 3 of the License, or
 * (at your option) any later version.
 *
 * A full copy of the GNU General Public License can be found in licence.txt
 *****************************************************************************/
#pragma endregion

#include "../../common.h"
#include "../../interface/viewport.h"
#include "../track_paint.h"
#include "../../paint/supports.h"
#include "../../paint/paint.h"

/** rct2: 0x008A2ABC */
static void paint_enterprise_structure(rct_ride * ride, sint8 xOffset, sint8 yOffset, uint16 height, rct_map_element * mapElement)
{
	height += 7;

	rct_map_element * savedMapElement = RCT2_GLOBAL(0x009DE578, rct_map_element*);
	rct_ride_entry * rideType = get_ride_entry(ride->subtype);
	rct_vehicle * vehicle = NULL;

	uint32 baseImageId = rideType->vehicles[0].base_image_id;

	if (ride->lifecycle_flags & RIDE_LIFECYCLE_ON_TRACK
	    && ride->vehicles[0] != SPRITE_INDEX_NULL) {
		RCT2_GLOBAL(RCT2_ADDRESS_PAINT_SETUP_CURRENT_TYPE, uint8) = VIEWPORT_INTERACTION_ITEM_SPRITE;
		vehicle = GET_VEHICLE(ride->vehicles[0]);
		RCT2_GLOBAL(0x009DE578, rct_vehicle*) = vehicle;
	}

	uint32 imageOffset = (get_current_rotation() + map_element_get_direction(mapElement)) % 4;
	if (vehicle != NULL) {
		imageOffset = (vehicle->vehicle_sprite_type << 2) + (((vehicle->sprite_direction >> 3) + get_current_rotation()) % 4);
	}

	uint32 imageColourFlags = RCT2_GLOBAL(0x00F441A0, uint32);
	if (imageColourFlags == 0x20000000) {
		imageColourFlags = ride->vehicle_colours[0].body_colour << 19 | ride->vehicle_colours[0].trim_colour << 24 | 0xA0000000;
	}

	uint32 imageId = (baseImageId + imageOffset) | imageColourFlags;
	sub_98197C(imageId, xOffset, yOffset, 24, 24, 48, height, 0, 0, height, get_current_rotation());

	rct_drawpixelinfo * dpi = RCT2_GLOBAL(0x140E9A8, rct_drawpixelinfo *);

	if (dpi->zoom_level == 0
	    && imageOffset < 12
	    && ride->lifecycle_flags & RIDE_LIFECYCLE_ON_TRACK
	    && vehicle != NULL) {
		for (int i = 0; i < 15; i++) {
			if (vehicle->num_peeps <= i) {
				break;
			}

			uint32 peepFrameOffset = ((imageOffset % 4) * 4 + (i * 4) % 15) & 0x0F;
			uint32 ax = (imageOffset & 0xFFFFFFFC) << 2;
			imageId = (baseImageId + 196 + peepFrameOffset + ax) | vehicle->peep_tshirt_colours[i] << 19 | 0x20000000;
			sub_98199C(imageId, xOffset, yOffset, 24, 24, 48, height, 0, 0, height, get_current_rotation());
		}
	}

	RCT2_GLOBAL(0x009DE578, rct_map_element*) = savedMapElement;
	RCT2_GLOBAL(RCT2_ADDRESS_PAINT_SETUP_CURRENT_TYPE, uint8) = VIEWPORT_INTERACTION_ITEM_RIDE;
}

/** rct2: 0x008A1584 */
static void paint_enterprise(uint8 rideIndex, uint8 trackSequence, uint8 direction, int height, rct_map_element * mapElement)
{
	trackSequence = track_map_4x4[direction][trackSequence];

	int edges = edges_4x4[trackSequence];
	rct_ride * ride = get_ride(rideIndex);
	rct_xy16 position = {RCT2_GLOBAL(0x009DE56A, sint16), RCT2_GLOBAL(0x009DE56E, sint16)};

	wooden_a_supports_paint_setup(direction & 1, 0, height, RCT2_GLOBAL(0x00F441A0, uint32), NULL);

	track_paint_util_paint_floor(edges, RCT2_GLOBAL(0x00F44198, uint32), height, floorSpritesCork, get_current_rotation());

	track_paint_util_paint_fences(edges, position, mapElement, ride, RCT2_GLOBAL(0x00F44198, uint32), height, fenceSpritesRope, get_current_rotation());

	switch (trackSequence) {
		case 5: paint_enterprise_structure(ride, 16, 16, height, mapElement); break;
		case 6: paint_enterprise_structure(ride, 16, -16, height, mapElement); break;
		case 10: paint_enterprise_structure(ride, -16, -16, height, mapElement); break;
		case 9: paint_enterprise_structure(ride, -16, 16, height, mapElement); break;

		case 0: paint_enterprise_structure(ride, 48, 48, height, mapElement); break;
		case 3: paint_enterprise_structure(ride, 48, -48, height, mapElement); break;
		case 15: paint_enterprise_structure(ride, -48, -48, height, mapElement); break;
		case 12: paint_enterprise_structure(ride, -48, 48, height, mapElement); break;

		case 7: paint_enterprise_structure(ride, 16, -48, height, mapElement); break;
		case 11: paint_enterprise_structure(ride, -16, -48, height, mapElement); break;
		case 14: paint_enterprise_structure(ride, -48, -16, height, mapElement); break;
		case 13: paint_enterprise_structure(ride, -48, 16, height, mapElement); break;
	}

	int cornerSegments = 0;
	switch (trackSequence) {
		case 0: cornerSegments = SEGMENT_B4 | SEGMENT_C8 | SEGMENT_CC; break;
		case 3: cornerSegments = SEGMENT_CC | SEGMENT_BC | SEGMENT_D4; break;
		case 12: cornerSegments = SEGMENT_C8 | SEGMENT_B8 | SEGMENT_D0; break;
		case 15: cornerSegments = SEGMENT_D0 | SEGMENT_C0 | SEGMENT_D4; break;
	}
	paint_util_set_segment_support_height(cornerSegments, height + 2, 0x20);
	paint_util_set_segment_support_height(SEGMENTS_ALL & ~cornerSegments, 0xFFFF, 0);
	paint_util_set_general_support_height(height + 160, 0x20);

}

/**
 * rct2: 0x008A13B4
 */
TRACK_PAINT_FUNCTION get_track_paint_function_enterprise(int trackType, int direction)
{
	if (trackType != 111) {
		return NULL;
	}

	return paint_enterprise;
}
