game/mario/maploader.cpp

#include "maploader.hpp"
#include "../sdlpp/sdlpp_rectrenderer.hpp"
#include <array>
#include <fstream>
#include "sprites.hpp"
#include "blocks.hpp"
#include "objectids.hpp"

// TODO move to one function
void loadMap(std::shared_ptr<SDLPP::Scene> &scene, std::shared_ptr<SDLPP::RectangleRender> mario, const std::string &file, std::shared_ptr<SDLPP::Renderer> &renderer) {
    std::ifstream map_file;
    map_file.open(file, std::ios::in | std::ios::binary);
    uint16_t cols;
    map_file.read((char*)&cols, sizeof(uint16_t)/sizeof(char));
    for(uint16_t i = 0; i < cols; i++) {
        for(int j = 0; j < 16; j++) {
            uint16_t input_number;
            uint8_t additional_data = 0;
            uint8_t character_type = 0, character = 0, modifier_type = 0, modifier_data = 0;
            map_file.read((char *)&input_number, sizeof(uint16_t)/sizeof(char));
            uint8_t type = (input_number & 0xF000)>>12;
            uint16_t id = (input_number & 0x0FFF) | BLOCK_PREFIX;
            if(type & 0x8) {
                map_file.read((char *)&additional_data, sizeof(uint8_t)/sizeof(char));
                type &= ~0x8;
                if(additional_data & 0x80) {
                    //modifier
                    additional_data &= ~0x80;
                    modifier_type = (additional_data & 0xF0)>>4;
                    modifier_data = additional_data & 0x0F;
                } else {
                    // character
                    character_type = (additional_data & 0xF0)>>4;
                    character = additional_data & 0x0F;
                }
            }
            bool collision = false;
            if(id == FLOOR_ID) {
                collision = true;
            }
            // TODO add modifiers to createTerrainBlock
            auto obj = createTerrainBlock(id, static_cast<BlockType>(type), renderer, i, j, collision);
            if(obj != nullptr)
                scene->addObject(obj);
            if(character) {
                if(character == MARIO_ID) {
                    mario->setPos(i * BLOCK_SIZE, 1 - (16-j) * BLOCK_SIZE);
                }
            }
        }
    }
    scene->moveZTop(mario);
}

// editor loader
void loadMap(std::shared_ptr<SDLPP::Scene> &scene, const std::string &file, std::shared_ptr<SDLPP::Renderer> &renderer, std::vector<std::array<std::tuple<uint8_t, uint16_t, uint8_t, uint8_t, uint8_t, uint8_t>,16>> &objects) {
    std::ifstream map_file;
    map_file.open(file, std::ios::in | std::ios::binary);
    uint16_t cols;
    map_file.read((char*)&cols, sizeof(uint16_t)/sizeof(char));
    objects.resize(cols);
    for(uint16_t i = 0; i < cols; i++) {
        auto &col = objects[i];
        for(int j = 0; j < 16; j++) {
            uint16_t input_number;
            uint8_t additional_data = 0;
            uint8_t character_type = 0, character = 0, modifier_type = 0, modifier_data = 0;
            map_file.read((char *)&input_number, sizeof(uint16_t)/sizeof(char));
            uint8_t type = (input_number & 0xF000)>>12;
            uint16_t id = (input_number & 0x0FFF) | BLOCK_PREFIX;
            if(type & 0x8) {
                map_file.read((char *)&additional_data, sizeof(uint8_t)/sizeof(char));
                type &= ~0x8;
                if(additional_data & 0x80) {
                    //modifier
                    additional_data &= ~0x80;
                    modifier_type = (additional_data & 0xF0)>>4;
                    modifier_data = additional_data & 0x0F;
                } else {
                    // character
                    character_type = (additional_data & 0xF0)>>4;
                    character = additional_data & 0x0F;
                }
            }
            col[j] = {type, id, character_type, character, modifier_type, modifier_data};
            // TODO add modifiers to createTerrainBlock
            auto obj = createTerrainBlock(id, static_cast<BlockType>(type), renderer, i, j, true);
            obj->getCollisions()[0]->setId(EDITOR_TERRAIN_ID);
            scene->addObject(obj);
            if(character) {
                if(character == MARIO_ID) {
                    scene->addObject(createMario(static_cast<BlockType>(character_type), renderer, i, j));
                }
            }
        }
    }
    if(objects.size() < 18) {
        objects.resize(18);
    }
}

// tuple - world object type, object, world character type, character, modifier type, modifier data
void saveMap(const std::string &file, std::vector<std::array<std::tuple<uint8_t, uint16_t, uint8_t, uint8_t, uint8_t, uint8_t>,16>> &objects) {
    std::ofstream output_file;
    output_file.open(file, std::ios::out | std::ios::binary);
    uint16_t cols = objects.size();
    output_file.write((char*)&cols, sizeof(uint16_t)/sizeof(char));
    for(auto &col : objects) {
        for(int i = 0; i < 16; i++) {
            auto &obj = col[i];
            uint16_t wide_type = std::get<0>(obj);
            wide_type = wide_type<<12;
            uint16_t write_num = (0x0FFF & std::get<1>(obj)) | wide_type;
            // 3 becuase character type can be 0 (overworld), 4 because modifier data can be 0 (breakable)
            if(std::get<3>(obj) || std::get<4>(obj)) {
                write_num |= 0x8000;
            }
            output_file.write((char*)&write_num, sizeof(uint16_t)/sizeof(char));
            uint8_t additional_data = 0;
            if(std::get<3>(obj)) {
                additional_data |= std::get<2>(obj)<<4;
                additional_data |= std::get<3>(obj);
            } else if(std::get<4>(obj)) {
                additional_data |= std::get<4>(obj)<<4;
                additional_data |= 0x80;
                additional_data |= std::get<5>(obj);
            }
            if(additional_data) {
                output_file.write((char*)&additional_data, sizeof(uint8_t)/sizeof(char));
            }
        }
    }
    output_file.close();
}