game/mario/mario.cpp

#include "mario.hpp"
#include "global_vars.hpp"
#include "objectids.hpp"
#include "sprites.hpp"

Mario::Mario(const std::shared_ptr< SDLPP::Renderer > &renderer) : SDLPP::RectangleRender(0, 0, BLOCK_SIZE, BLOCK_SIZE, renderer, g_mario_texture, MARIO_STANDING_SRC) {
    setAnimationFrames( MARIO_WALK_ANIM );
    setId( MARIO_ID );
    setAlignment( SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER );
    setAnimationSpeed( 12.5 );
    pauseAnimation();
    setMovement( 0, 0 );
    setMovementSpeed( 1 );
    auto bottom_detect = SDLPP::RectColider( 0.2, 1, 0.6, 0, MARIO_FLOOR_DETECT );
    bottom_detect.setMinHeight(1);
    addCollision(bottom_detect);
    addCollision(
        SDLPP::RectColider( 0.05, 0.1, 0.1, 0.89, MARIO_LEFT_SIDE_DETECT ) );
    addCollision(
        SDLPP::RectColider( 0.85, 0.1, 0.1, 0.89, MARIO_RIGHT_SIDE_DETECT ) );
    addCollision(
        SDLPP::RectColider( 0.05, 0, 0.1, 0.1, MARIO_TOP_LEFT_DETECT ) );
    addCollision(
        SDLPP::RectColider( 0.85, 0, 0.1, 0.1, MARIO_TOP_LEFT_DETECT ) );
    top_collision = std::make_shared<SDLPP::RectColider>( 0.5, 0, 0.2, 0.15, MARIO_TOP_DETECT );
    addCollision( top_collision );
    setStatic( false );
}
void Mario::walkLeft() {
    if(on_ground)
        resumeAnimation();
    addMovement( -side_movement, 0 );
    if ( getMovement().getX() < 0 && faces_right ) {
        flipHorizontally();
        top_collision->setPos(0.3, 0);
        updateSizeAndPosition();
        faces_right = false;
    }
}

void Mario::walkRight() {
    if(on_ground)
        resumeAnimation();
    addMovement( side_movement, 0 );
    if ( getMovement().getX() > 0 && !faces_right ) {
        flipHorizontally();
        top_collision->setPos(0.5, 0);
        updateSizeAndPosition();
        faces_right = true;
    }
}

void Mario::setStanding() {
    if ( getMovement().getX() == 0 ) {
        pauseAnimation();
    }
}

void Mario::handleVisitor(MarioVisitor &visitor, SDLPP::Vec2D<double> previous_position) {
    // TODO - https://web.archive.org/web/20130807122227/http://i276.photobucket.com/albums/kk21/jdaster64/smb_playerphysics.png
    // handle gravity
    on_ground = visitor.isOnGround();
    if(!jumping && on_ground) {
        resetMovementY();
        setTextureSourceRect(MARIO_STANDING_SRC);
        if(getMovement().getX() != 0)
            resumeAnimation();
        // for some reason falling of the edge causes on_ground to be true, but
        // visitor ground_y is 0
        if(visitor.getGroundY() != 0) {
            setPos(getPos().getX(), visitor.getGroundY() - BLOCK_SIZE);
        }
    }
    if(visitor.topBlock() && getMovement().getY() < 0) {
        resetMovementY();
        stop_jump = true;
    }
    // make sure Mario isn't stuck inside a wall
    // TODO more readable function names
    if ( visitor.isStopped() ) {
        if(visitor.getStopX() > previous_position.getX())
            previous_position = {visitor.getStopX(), previous_position.getY()};
        setPos( previous_position.getX(), getPos().getY() );
    } else if ( visitor.canGoLeft() != visitor.canGoRight() ) {
        SDLPP::Vec2D<double> next_pos = { visitor.getMovementBlockage().getX() + (visitor.canGoLeft() * -1 + visitor.canGoRight() * 1) * BLOCK_SIZE, getPos().getY() };
        if((visitor.canGoLeft() && next_pos.getX() > previous_position.getX()) || (visitor.canGoRight() && next_pos.getX() < previous_position.getX())) {
            next_pos = previous_position;
        }
        setPos(next_pos);
    } else if (visitor.moveTop() && (jumping && !stop_jump)) {
        auto objPos = visitor.getRightLeftPos();
        if(objPos.getX() < getPos().getX()) {
            setPos( objPos.getX() + BLOCK_SIZE, getPos().getY() );
        } else {
            setPos( objPos.getX() - BLOCK_SIZE, getPos().getY() );
        }
    }
}

void Mario::jump() {
    if(!on_ground)
        return;
    jumping = true;
    stop_jump = false;
    max_jump = getPos().getY() - 3*BLOCK_SIZE;
    min_jump = getPos().getY() - 1*BLOCK_SIZE;
    slow_jump = getPos().getY() - 2*BLOCK_SIZE;
    addMovement( 0, -jump_movement );
    ticks_till_gravity = base_gravity_ticks;
    setTextureSourceRect(MARIO_JUMP_SRC);
    pauseAnimation();
}

void Mario::stopJump() {
    stop_jump = true;
}

void Mario::custom_move( int ticks ) {
    if(!jumping && on_ground)
        return;
    if(getMovement().getY() >= 1.0625 * jump_movement)
        return;
    ticks_till_gravity -= ticks;
    if(ticks_till_gravity < 0) {
        if(getMovement().getY() > 0) {
            jumping = false;
            addMovement(0, gravity_add_jumping);
        } else {
            if(stop_jump) {
                addMovement(0, gravity_add_falling);
            } else {
                addMovement(0, gravity_add_jumping);
            }
        }
        ticks_till_gravity += base_gravity_ticks;
    }
}