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Zadanie 5 WIP

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This commit is contained in:
Michał Leśniak 2021-11-07 10:53:45 +01:00
parent 755d6ed73e
commit 9179c4aa02
12 changed files with 987 additions and 0 deletions
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31
2dgk_5/2dgk_5.sln Normal file
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2dgk_5/2dgk_5/level.txt Normal file
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/------------\/------------\
|............||............|
|./--\./---\.||./---\./--\.|
|#| |.| |.||.| |.| |#|
|.`--'.`---'.`'.`---'.`--'.|
|..........................|
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|......||....||....||......|
`----\.|`--\ || /--'|./----'
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-----'.`' | | `'.`-----
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|..........................|
`--------------------------'

709
2dgk_5/2dgk_5/main.cpp Normal file
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//Using SDL and standard IO
#include "SDL.h"
#include <cstdio>
#include <cmath>
#include <string>
#include <fstream>
#include <vector>
template <class T>
constexpr const T& clamp(const T& x)
{
return std::max(std::min(1.f, x), 0.f);
}
template <class T>
constexpr const T& lerp(const T& a, const T& b, const float& t)
{
return a + (b - a) * t;
}
//Analog joystick dead zone
const int JOYSTICK_DEAD_ZONE = 8000;
//Screen dimension constants
const int WINDOW_DEAD_ZONE = 100;
const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;
const int TILE_WIDTH = 32;
const int TILE_HEIGHT = 32;
const float SPEED = 0.16f;
const float SMOOTH = 0.4f;
enum TILE_TYPE {
DEFAULT = 0,
HORIZONTAL_WALL = 1,
VERTICAL_WALL = 2,
DOT = 3
};
class Vector2D {
public:
Vector2D(float x, float y) : m_x(x), m_y(y) {}
float getX() { return m_x; }
float getY() { return m_y; }
void setX(float x) { m_x = x; }
void setY(float y) { m_y = y; }
float length() { return sqrt(m_x * m_x + m_y * m_y); }
Vector2D operator+(const Vector2D& v2) const {
return Vector2D(m_x + v2.m_x, m_y + v2.m_y);
}
friend Vector2D& operator+=(Vector2D& v1, const Vector2D& v2) {
v1.m_x += v2.m_x;
v1.m_y += v2.m_y;
return v1;
}
Vector2D operator*(float scalar) {
return Vector2D(m_x * scalar, m_y * scalar);
}
Vector2D& operator*=(float scalar) {
m_x *= scalar;
m_y *= scalar;
return *this;
}
Vector2D operator-(const Vector2D& v2) const {
return Vector2D(m_x - v2.m_x, m_y - v2.m_y);
}
friend Vector2D& operator-=(Vector2D& v1, const Vector2D& v2) {
v1.m_x -= v2.m_x;
v1.m_y -= v2.m_y;
return v1;
}
Vector2D operator/(float scalar) {
return Vector2D(m_x / scalar, m_y / scalar);
}
Vector2D& operator/=(float scalar) {
m_x /= scalar;
m_y /= scalar;
return *this;
}
void normalize() {
float l = length();
if (l > 0) {
(*this) *= 1 / l;
}
}
private:
float m_x;
float m_y;
};
class KTile {
public:
//Initializes position and type
KTile(int x, int y, TILE_TYPE tileType);
//Shows the tile
void render(SDL_Rect& camera, float scale = 1.f);
//Get the tile type
int getType();
SDL_Rect getBox();
private:
//The attributes of the tile
SDL_Rect mBox;
//The tile type
TILE_TYPE mType;
};
int KTile::getType()
{
return mType;
}
SDL_Rect KTile::getBox()
{
return mBox;
}
//Texture wrapper class
class KTexture
{
public:
//Initializes variables
KTexture();
//Deallocates memory
~KTexture();
//Loads image at specified path
bool loadFromFile(std::string path);
//Deallocates texture
void free();
//Renders texture at given point
void render(int x, int y, SDL_Rect* clip = NULL, float scale = 1.f);
//Gets image dimensions
int getWidth();
int getHeight();
private:
//The actual hardware texture
SDL_Texture* mTexture;
//Image dimensions
int mWidth;
int mHeight;
};
SDL_Window* gWindow = NULL;
SDL_Renderer* gRenderer = NULL;
KTexture gTileTextures[4];
KTexture gPlayerTexture;
KTexture gPlayerTexture2;
std::vector<KTile> gTiles;
//Game Controller 1 handler
SDL_Joystick* gGameController = NULL;
int gMapHeight = -1;
int gMapWidth = -1;
bool init();
bool loadMedia();
void close();
SDL_Texture* loadTexture(std::string path);
KTexture::KTexture()
{
//Initialize
mTexture = NULL;
mWidth = 0;
mHeight = 0;
}
KTexture::~KTexture()
{
//Deallocate
free();
}
bool KTexture::loadFromFile(std::string path)
{
//Get rid of preexisting texture
free();
//The final texture
SDL_Texture* newTexture = NULL;
//Load image at specified path
SDL_Surface* loadedSurface = SDL_LoadBMP(path.c_str());
if (loadedSurface == NULL)
{
printf("Unable to load image %s! SDL_image Error: %s\n", path.c_str(), SDL_GetError());
}
else
{
//Color key image
SDL_SetColorKey(loadedSurface, SDL_TRUE, SDL_MapRGB(loadedSurface->format, 0xFF, 0, 0));
//Create texture from surface pixels
newTexture = SDL_CreateTextureFromSurface(gRenderer, loadedSurface);
if (newTexture == NULL)
{
printf("Unable to create texture from %s! SDL Error: %s\n", path.c_str(), SDL_GetError());
}
else
{
//Get image dimensions
mWidth = loadedSurface->w;
mHeight = loadedSurface->h;
}
//Get rid of old loaded surface
SDL_FreeSurface(loadedSurface);
}
//Return success
mTexture = newTexture;
return mTexture != NULL;
}
void KTexture::free()
{
//Free texture if it exists
if (mTexture != NULL)
{
SDL_DestroyTexture(mTexture);
mTexture = NULL;
mWidth = 0;
mHeight = 0;
}
}
void KTexture::render(int x, int y, SDL_Rect* clip, float scale)
{
//Set rendering space and render to screen
SDL_Rect renderQuad = { x * scale, y * scale, mWidth * scale, mHeight * scale };
//Set clip rendering dimensions
if (clip != NULL)
{
renderQuad.w = clip->w;
renderQuad.h = clip->h;
}
//Render to screen
SDL_RenderCopy(gRenderer, mTexture, clip, &renderQuad);
}
int KTexture::getWidth()
{
return mWidth;
}
int KTexture::getHeight()
{
return mHeight;
}
bool init()
{
//Initialization flag
bool success = true;
//Initialize SDL
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0)
{
printf("SDL could not initialize! SDL_Error: %s\n", SDL_GetError());
success = false;
}
else
{
//Set texture filtering to linear
if (!SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "1"))
{
printf("Warning: Linear texture filtering not enabled!");
}
//Check for joysticks
if (SDL_NumJoysticks() < 1)
{
printf("Warning: No joysticks connected!\n");
}
else
{
//Load joystick
gGameController = SDL_JoystickOpen(0);
if (gGameController == NULL)
{
printf("Warning: Unable to open game controller! SDL Error: %s\n", SDL_GetError());
}
}
//Create window
gWindow = SDL_CreateWindow("2DGK - Zadanie 5", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
if (gWindow == NULL)
{
printf("Window could not be created! SDL_Error: %s\n", SDL_GetError());
success = false;
}
else
{
//Create renderer for window
gRenderer = SDL_CreateRenderer(gWindow, -1, SDL_RENDERER_ACCELERATED);
if (gRenderer == NULL)
{
printf("Renderer could not be created! SDL Error: %s\n", SDL_GetError());
success = false;
}
else
{
//Initialize renderer color
SDL_SetRenderDrawColor(gRenderer, 0, 0xFF, 0, 0xFF);
}
}
}
return success;
}
bool loadMedia()
{
//Loading success flag
bool success = true;
if (!gPlayerTexture.loadFromFile("textures/player.bmp"))
{
printf("Failed to load player texture image!\n");
success = false;
}
if (!gPlayerTexture2.loadFromFile("textures/player2.bmp"))
{
printf("Failed to load player texture image!\n");
success = false;
}
for (int i = TILE_TYPE::DEFAULT; i <= TILE_TYPE::DOT; ++i)
{
if (!gTileTextures[i].loadFromFile("textures/0" + std::to_string(i) + ".bmp"))
{
printf("Failed to load 0%d texture image!\n", i);
success = false;
}
}
gTiles.clear();
std::ifstream levelFile;
levelFile.open("level.txt");
if (levelFile.fail())
{
printf("Failed to load level.txt!\n");
success = false;
}
else
{
int y = 0;
std::string line;
while (std::getline(levelFile, line)) {
if (gMapWidth < (int)(line.length() * TILE_WIDTH))
gMapWidth = line.length() * TILE_WIDTH;
for (int i = 0; i < line.length(); ++i) {
TILE_TYPE type = TILE_TYPE::DEFAULT;
switch (line[i])
{
case '|':
type = TILE_TYPE::VERTICAL_WALL;
break;
case '-':
type = TILE_TYPE::HORIZONTAL_WALL;
break;
case '.':
type = TILE_TYPE::DOT;
break;
}
gTiles.push_back(KTile(i * TILE_WIDTH, y * TILE_HEIGHT, type));
}
++y;
}
gMapHeight = y * TILE_HEIGHT;
levelFile.close();
}
return success;
}
SDL_Texture* loadTexture(std::string path)
{
//The final optimized image
SDL_Texture* newTexture = NULL;
//Load image at specified path
SDL_Surface* loadedSurface = SDL_LoadBMP(path.c_str());
if (loadedSurface == NULL)
{
printf("Unable to load image %s! SDL Error: %s\n", path.c_str(), SDL_GetError());
}
else
{
//Create texture from surface pixels
newTexture = SDL_CreateTextureFromSurface(gRenderer, loadedSurface);
if (newTexture == NULL)
{
printf("Unable to optimize image %s! SDL Error: %s\n", path.c_str(), SDL_GetError());
}
//Get rid of old loaded surface
SDL_FreeSurface(loadedSurface);
}
return newTexture;
}
void close()
{
//Free loaded images
for (int i = 0; i <= TILE_TYPE::DOT; ++i)
gTileTextures[i].free();
gPlayerTexture.free();
gPlayerTexture2.free();
//Close game controller
SDL_JoystickClose(gGameController);
gGameController = NULL;
//Destroy window
SDL_DestroyRenderer(gRenderer);
SDL_DestroyWindow(gWindow);
gWindow = NULL;
gRenderer = NULL;
//Quit SDL subsystems
SDL_Quit();
}
int main(int argc, char* args[])
{
//Start up SDL and create window
if (!init())
{
printf("Failed to initialize!\n");
}
else
{
//Load media
if (!loadMedia())
{
printf("Failed to load media!\n");
}
else
{
//Main loop flag
bool quit = false;
//Event handler
SDL_Event e;
SDL_Rect viewport;
viewport.x = SCREEN_WIDTH / 2;
viewport.y = SCREEN_HEIGHT / 2;
viewport.w = SCREEN_WIDTH;
viewport.h = SCREEN_HEIGHT;
Vector2D playerOnePosition(0, 0);
Vector2D playerOneInput(0, 0);
Vector2D playerOneVelocity(0, 0);
Vector2D playerTwoPosition(0, 0);
Vector2D playerTwoInput(0, 0);
Vector2D playerTwoVelocity(0, 0);
//Normalized direction
int xDir = 0;
int yDir = 0;
uint32_t time, previous_time;
time = previous_time = SDL_GetTicks();
printf("\n");
//While application is running
while (!quit)
{
previous_time = time;
time = SDL_GetTicks();
playerOneInput.setX(0);
playerOneInput.setY(0);
//Handle events on queue
while (SDL_PollEvent(&e) != 0)
{
//User requests quit
if (e.type == SDL_QUIT)
{
quit = true;
}
else if (e.type == SDL_JOYAXISMOTION)
{
//Motion on controller 0
if (e.jaxis.which == 0)
{
//X axis motion
if (e.jaxis.axis == 0)
{
//Left of dead zone
if (e.jaxis.value < -JOYSTICK_DEAD_ZONE)
{
playerTwoInput.setX(e.jaxis.value);
}
//Right of dead zone
else if (e.jaxis.value > JOYSTICK_DEAD_ZONE)
{
playerTwoInput.setX(e.jaxis.value);
}
else
{
playerTwoInput.setX(0);
}
}
//Y axis motion
else if (e.jaxis.axis == 1)
{
//Below of dead zone
if (e.jaxis.value < -JOYSTICK_DEAD_ZONE)
{
playerTwoInput.setY(e.jaxis.value);
}
//Above of dead zone
else if (e.jaxis.value > JOYSTICK_DEAD_ZONE)
{
playerTwoInput.setY(e.jaxis.value);
}
else
{
playerTwoInput.setY(0);
}
}
}
}
}
const Uint8* currentKeyStates = SDL_GetKeyboardState(NULL);
if (currentKeyStates[SDL_SCANCODE_W])
{
playerOneInput.setY(-1);
}
if (currentKeyStates[SDL_SCANCODE_S])
{
playerOneInput.setY(1);
}
if (currentKeyStates[SDL_SCANCODE_A])
{
playerOneInput.setX(-1);
}
if (currentKeyStates[SDL_SCANCODE_D])
{
playerOneInput.setX(1);
}
playerOneInput.normalize();
playerOneVelocity = playerOneInput * SPEED * (1 - SMOOTH) + playerOneVelocity * SMOOTH;
playerOnePosition += playerOneVelocity;
bool zoom = true;
if (currentKeyStates[SDL_SCANCODE_F])
{
zoom = true;
}
if (!zoom) {
// keep player one near player two
if (playerOnePosition.getX() < playerTwoPosition.getX() - SCREEN_WIDTH + WINDOW_DEAD_ZONE) playerOnePosition.setX(playerTwoPosition.getX() - SCREEN_WIDTH + WINDOW_DEAD_ZONE);
if (playerOnePosition.getX() > playerTwoPosition.getX() + SCREEN_WIDTH - WINDOW_DEAD_ZONE) playerOnePosition.setX(playerTwoPosition.getX() + SCREEN_WIDTH - WINDOW_DEAD_ZONE);
if (playerOnePosition.getY() < playerTwoPosition.getY() - SCREEN_HEIGHT + WINDOW_DEAD_ZONE) playerOnePosition.setY(playerTwoPosition.getY() - SCREEN_HEIGHT + WINDOW_DEAD_ZONE);
if (playerOnePosition.getY() > playerTwoPosition.getY() + SCREEN_HEIGHT - WINDOW_DEAD_ZONE) playerOnePosition.setY(playerTwoPosition.getY() + SCREEN_HEIGHT - WINDOW_DEAD_ZONE);
}
// keep player one in map
if (playerOnePosition.getX() < 0) playerOnePosition.setX(0);
if (playerOnePosition.getX() > gMapWidth - gPlayerTexture.getWidth()) playerOnePosition.setX(gMapWidth - gPlayerTexture.getWidth());
if (playerOnePosition.getY() < 0) playerOnePosition.setY(0);
if (playerOnePosition.getY() > gMapHeight - gPlayerTexture.getHeight()) playerOnePosition.setY(gMapHeight - gPlayerTexture.getHeight());
playerTwoInput.normalize();
//printf("\r \rX:%f, Y:%f", playerTwoInput.getX(), playerTwoInput.getY());
playerTwoVelocity = playerTwoInput * SPEED * (1 - SMOOTH) + playerTwoVelocity * SMOOTH;
playerTwoPosition += playerTwoVelocity;
if (!zoom) {
if (playerTwoPosition.getX() < playerOnePosition.getX() - SCREEN_WIDTH + WINDOW_DEAD_ZONE) playerTwoPosition.setX(playerOnePosition.getX() - SCREEN_WIDTH + WINDOW_DEAD_ZONE);
if (playerTwoPosition.getX() > playerOnePosition.getX() + SCREEN_WIDTH - WINDOW_DEAD_ZONE) playerTwoPosition.setX(playerOnePosition.getX() + SCREEN_WIDTH - WINDOW_DEAD_ZONE);
if (playerTwoPosition.getY() < playerOnePosition.getY() - SCREEN_HEIGHT + WINDOW_DEAD_ZONE) playerTwoPosition.setY(playerOnePosition.getY() - SCREEN_HEIGHT + WINDOW_DEAD_ZONE);
if (playerTwoPosition.getY() > playerOnePosition.getY() + SCREEN_HEIGHT - WINDOW_DEAD_ZONE) playerTwoPosition.setY(playerOnePosition.getY() + SCREEN_HEIGHT - WINDOW_DEAD_ZONE);
}
if (playerTwoPosition.getX() < 0) playerTwoPosition.setX(0);
if (playerTwoPosition.getX() > gMapWidth - gPlayerTexture.getWidth()) playerTwoPosition.setX(gMapWidth - gPlayerTexture.getWidth());
if (playerTwoPosition.getY() < 0) playerTwoPosition.setY(0);
if (playerTwoPosition.getY() > gMapHeight - gPlayerTexture.getHeight()) playerTwoPosition.setY(gMapHeight - gPlayerTexture.getHeight());
float scale = 1.f;
if (zoom)
{
float xDist = (std::abs(playerTwoPosition.getX() - playerOnePosition.getX()) - (SCREEN_WIDTH - WINDOW_DEAD_ZONE));
float yDist = (std::abs(playerTwoPosition.getY() - playerOnePosition.getY()) - (SCREEN_HEIGHT - WINDOW_DEAD_ZONE));
float xMaxDist = (gMapWidth - gPlayerTexture.getWidth() - (SCREEN_WIDTH - WINDOW_DEAD_ZONE));
float t1 = xDist / xMaxDist;
float t2 = yDist / (gMapHeight - gPlayerTexture.getHeight() - (SCREEN_HEIGHT - WINDOW_DEAD_ZONE));
scale = lerp(scale, std::max(SCREEN_WIDTH * 1.0f / gMapWidth, SCREEN_HEIGHT * 1.0f / gMapHeight),
std::max(
std::max(t1, 0.f),
std::max(t2, 0.f)
));
printf("\rscale: %f", scale);
}
if (currentKeyStates[SDL_SCANCODE_E])
{
scale = std::max(SCREEN_WIDTH * 1.0f / gMapWidth, SCREEN_HEIGHT * 1.0f / gMapHeight);
}
Vector2D focusPoint = (playerOnePosition + playerTwoPosition + Vector2D(gPlayerTexture.getWidth(), gPlayerTexture.getHeight())) * scale / 2;
if (currentKeyStates[SDL_SCANCODE_Q])
{
focusPoint = Vector2D(gMapWidth / 2, gMapHeight / 2);
}
//viewport.x += clamp((time - previous_time) * .05f) * (focusPoint.getX() - SCREEN_WIDTH / 2 - viewport.x);
viewport.x = lerp(viewport.x, int(focusPoint.getX() - SCREEN_WIDTH / 2), (time - previous_time) * .05f);
if ((focusPoint.getX() - SCREEN_WIDTH / 2) - viewport.x <= 0.005f)
{
viewport.x = (focusPoint.getX() - SCREEN_WIDTH / 2);
}
viewport.y += clamp((time - previous_time) * .05f) * (focusPoint.getY() - SCREEN_HEIGHT / 2 - viewport.y);
if ((focusPoint.getY() - SCREEN_HEIGHT / 2) - viewport.y <= 0.005f)
{
viewport.y = (focusPoint.getY() - SCREEN_HEIGHT / 2);
}
if (viewport.x < 0)
viewport.x = 0;
if (viewport.y < 0)
viewport.y = 0;
if (viewport.x > (gMapWidth - viewport.w) * scale)
viewport.x = (gMapWidth - viewport.w) * scale;
if (viewport.y > (gMapHeight - viewport.h) * scale)
viewport.y = (gMapHeight - viewport.h) * scale;
//Clear screen
SDL_SetRenderDrawColor(gRenderer, 0, 0xFF, 0, 0xFF);
SDL_RenderClear(gRenderer);
for (auto& tile : gTiles)
tile.render(viewport, scale);
gPlayerTexture.render(playerOnePosition.getX() - viewport.x, playerOnePosition.getY() - viewport.y, NULL, scale);
gPlayerTexture2.render(playerTwoPosition.getX() - viewport.x, playerTwoPosition.getY() - viewport.y, NULL, scale);
//Update screen
SDL_RenderPresent(gRenderer);
}
}
}
//Free resources and close SDL
close();
return 0;
}
KTile::KTile(int x, int y, TILE_TYPE tileType)
{
//Get the offsets
mBox.x = x;
mBox.y = y;
mBox.w = TILE_WIDTH;
mBox.h = TILE_HEIGHT;
//Get the tile type
mType = tileType;
}
void KTile::render(SDL_Rect& camera, float scale)
{
gTileTextures[mType].render(mBox.x - camera.x, mBox.y - camera.y, NULL, scale);
}

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{
"$schema": "https://raw.githubusercontent.com/microsoft/vcpkg/master/scripts/vcpkg.schema.json",
"name": "dgk-5",
"version": "0.1.0",
"dependencies": [
"sdl2"
]
}