game/mario/maploader.cpp

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#include "maploader.hpp"
#include "../sdlpp/sdlpp_rectrenderer.hpp"
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#include <array>
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#include <fstream>
#include "sprites.hpp"
#include "blocks.hpp"
#include "objectids.hpp"
#include "global_vars.hpp"
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#define TERRAIN_TYPE_HAS_ADDITIONAL 0x8
#define WIDE_TERRAIN_HAS_ADDITIONAL 0x8000
#define ADDITIONAL_IS_MOD 0x80
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void loadMap( std::shared_ptr< SDLPP::Scene > &scene,
std::shared_ptr< SDLPP::RenderObject > mario,
const std::string &file ) {
std::vector< mapColumnType > tmp = {};
loadMap( scene, mario, file, tmp, false );
scene->moveZTop( mario );
}
uint8_t read8Bits( std::ifstream &file ) {
uint8_t data;
file.read( ( char * )&data, sizeof( uint8_t ) / sizeof( char ) );
return data;
}
void write8Bits( std::ofstream &file, uint8_t data ) {
file.write( ( char * )&data, sizeof( uint8_t ) / sizeof( char ) );
}
uint16_t read16Bits( std::ifstream &file ) {
uint16_t data;
file.read( ( char * )&data, sizeof( uint16_t ) / sizeof( char ) );
return data;
}
void write16Bits( std::ofstream &file, uint16_t data ) {
file.write( ( char * )&data, sizeof( uint16_t ) / sizeof( char ) );
}
std::pair< uint16_t, uint8_t > separateWideTerrain( uint16_t wide_terrain ) {
uint8_t terrain_type = ( wide_terrain & 0xF000 ) >> 12;
uint16_t terrain_id = ( wide_terrain & 0x0FFF ) | BLOCK_PREFIX;
return { terrain_id, terrain_type };
}
std::pair< uint8_t, uint8_t > separateAdditionalData( uint8_t data ) {
auto id = data & 0x0F;
auto type = ( data & 0xF0 ) >> 4;
return { id, type };
}
uint16_t combineTerrain( uint16_t id, uint8_t type ) {
uint16_t wide_terrain = type;
wide_terrain = wide_terrain << 12;
wide_terrain |= 0x0FFF & id;
return wide_terrain;
}
uint8_t combineAdditionalData( uint8_t id, uint8_t type ) {
return type << 4 | id;
}
MapObject parseBlock( std::ifstream &map_file ) {
uint8_t character_type = 0, character_id = 0, modifier_id = 0,
modifier_data = 0;
uint16_t wide_terrain = read16Bits( map_file );
auto terrain = separateWideTerrain( wide_terrain );
uint16_t terrain_id = terrain.first;
uint8_t terrain_type = terrain.second;
if ( terrain_type & TERRAIN_TYPE_HAS_ADDITIONAL ) {
uint8_t additional_data = read8Bits( map_file );
terrain_type &= ~TERRAIN_TYPE_HAS_ADDITIONAL;
if ( additional_data & ADDITIONAL_IS_MOD ) {
additional_data &= ~ADDITIONAL_IS_MOD;
auto modifier = separateAdditionalData( additional_data );
// TODO swap modifier id and data
modifier_id = modifier.second;
modifier_data = modifier.first;
} else {
// character
auto character = separateAdditionalData( additional_data );
character_id = character.first;
character_type = character.second;
}
}
return MapObject( terrain_id, terrain_type, character_id, character_type,
modifier_id, modifier_data );
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}
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// editor loader
void loadMap( std::shared_ptr< SDLPP::Scene > &scene,
std::shared_ptr< SDLPP::RenderObject > &mario,
const std::string &file,
std::vector< mapColumnType > &objects, bool editor,
size_t editor_width ) {
auto renderer = scene->getRendererShared();
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std::ifstream map_file;
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map_file.open( file, std::ios::in | std::ios::binary );
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uint16_t cols;
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map_file.read( ( char * )&cols, sizeof( uint16_t ) / sizeof( char ) );
if ( editor ) {
objects.resize( cols );
}
mapColumnType *col = nullptr;
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for ( uint16_t i = 0; i < cols; i++ ) {
if ( editor ) {
col = &objects[i];
}
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for ( int j = 0; j < 16; j++ ) {
auto block = parseBlock( map_file );
if ( editor ) {
col->at( j ) = block;
}
bool destructible = false;
bool removeCollisions = false;
if ( !editor &&
block.getModifierId() == DESTRUCTIBLE_MODIFIER_ID ) {
destructible = true;
}
if ( !editor &&
block.getModifierId() == BACKGROUND_MODIFIER_ID ) {
destructible = false;
removeCollisions = true;
}
// TODO add modifiers to createTerrainBlock
if(block.getTerrainId() != 0) {
auto obj = createTerrainBlock(
block.getTerrainId(), block.getTerrainType(),
renderer, i, j, destructible, editor );
if(removeCollisions) {
obj->removeCollisions();
}
if ( obj != nullptr ) {
if ( editor ) {
obj->getCollisions()[0]->setId( EDITOR_TERRAIN_ID );
}
scene->addObject( obj );
}
}
if ( block.hasCharacter() ) {
if ( block.getCharacterId() == MARIO_ID ) {
if ( editor ) {
scene->addObject( createMario(
block.getCharacterType(),
renderer, i, j ) );
mario =
scene->getObject( scene->getObjects().size() - 1 );
} else {
mario->setPos( i * BLOCK_SIZE,
1 - ( 16 - j ) * BLOCK_SIZE );
}
}
}
if ( editor && block.hasModifier() ) {
// TODO createModifierBlock with data
auto mod = createTerrainBlock(
block.getModifierId(), LandType::OVERWORLD, renderer, i, j,
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g_translucent_mod_texture, false, editor );
mod->getCollisions()[0]->setId( EDITOR_TERRAIN_ID );
dynamic_cast< MarioBlock * >( mod.get() )->setTerrain( false );
scene->addObject( mod );
}
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}
}
if ( editor && objects.size() < editor_width ) {
objects.resize( editor_width );
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}
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}
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void saveMap( const std::string &file, std::vector< mapColumnType > &objects ) {
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std::ofstream output_file;
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output_file.open( file, std::ios::out | std::ios::binary );
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uint16_t cols = objects.size();
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output_file.write( ( char * )&cols, sizeof( uint16_t ) / sizeof( char ) );
for ( auto &col : objects ) {
for ( int i = 0; i < 16; i++ ) {
auto &block = col[i];
auto wide_terrain = combineTerrain(block.getTerrainId(), block.getTerrainType());
// if block has additional data it needs to indicate it
if ( block.hasCharacter() || block.hasModifier() ) {
wide_terrain |= WIDE_TERRAIN_HAS_ADDITIONAL;
}
write16Bits(output_file, wide_terrain);
uint8_t additional_data = 0;
if ( block.hasCharacter() ) {
additional_data = combineAdditionalData(block.getCharacterId(), block.getCharacterType());
} else if ( block.hasModifier() ) {
// TODO seriously change order of id/data!!!
additional_data = combineAdditionalData(block.getModifierData(), block.getModifierId());
additional_data |= ADDITIONAL_IS_MOD;
}
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if ( additional_data ) {
write8Bits(output_file, additional_data);
}
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}
}
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output_file.close();
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}