GameJam-polytech/src/game.c

#include "game.h"
#include <math.h>
#include <SDL2/SDL_image.h>
#include <SDL2/SDL_mixer.h>
#include <SDL2/SDL_surface.h>
#include "scaller.h"
#include "scene.h"
#include "text.h"

#define SLIDER_SPEED 1.f/500
#define GRAVITY 10000.f

static Mix_Music * music;

Scene_t gameScene;

static bool isSpaceKeypressed = false;
static float deltaAccu = 0;
static bool crashed = false;
static const float startPersonPositionX = CAMERA_WIDTH * 0.23f;
static const float startPersonPositionY = CAMERA_HEIGHT * 0.4f;
static float personPositionX = startPersonPositionX;
static float personPositionY = startPersonPositionY;

static const float startPersonVelocityX = 200;
static float personVelocityX = 200;
static float personVelocityY = 0;

float jetons = 0.f;

static RenderObject_t person;
static RenderId_t personId;
RenderObject_t scoreText;
static RenderId_t scoreTextId = -1;

static RenderObject_t strengthBar;
static RenderId_t strengthBarId;
static float strength = 0.f;
static bool increaseStrength = true;


static float adameStrength = 1.f; // this value is not const as it will be possible to improve the strenght of Adame.

static RenderObject_t strengthBarSlider;
static float strengthBarSliderDistance = 0.f;
static RenderId_t strengthBarSliderId;
static bool increaseStrengthBarSlider = true;




static void playMusic(){
    music = Mix_LoadMUS("./assets/music/jojo arab.mp3");
	if(music == NULL) {
		fprintf(stderr, "Prout not found!\n");
		exit(1);
	}

    // if(Mix_PlayMusic(music, 0) != 0){
	// 	printf("Music sound could not be played!\n"
	// 		"SDL_Error: %s\n", Mix_GetError());
	// 	Mix_FreeMusic(music);
	//     running = false;
	// }
}

int game_staticRender(void){
    playMusic();

    MonitorSize_t size = renderer_getMonitorSize();
    float aspectRatio = (float)size.width / size.height;

    SDL_Surface* gameBackgroundSurface = IMG_Load("./assets/img/game_bg.png");
    if(gameBackgroundSurface == NULL){
        printf("cannot load background");
        return -1;
    }


    RenderObject_t gameBackground = EMPTY_RENDER_OBJECT;
    strcpy(gameBackground.name, "gameBackground");
    gameBackground.z = 0;
    gameBackground.surface = gameBackgroundSurface;
    scaller(gameBackground.surface, 1, &gameBackground.width, &gameBackground.height);
    gameBackground.height = 1;
    scene_addRenderObject(&gameScene, gameBackground, 0, 0);

    SDL_Surface* buildingSurface = IMG_Load("./assets/img/building.png");
    RenderObject_t building = EMPTY_RENDER_OBJECT;
    strcpy(building.name, "building");
    building.z = 9;
    building.surface = buildingSurface;
    building.width = 0.25;
    building.height = 1;
    scene_addRenderObject(&gameScene, building, 0, 0);

    SDL_Surface* personSurface = IMG_Load("./assets/img/person.png");
    strcpy(person.name, "person");
    person.z = 9;
    person.surface = personSurface;
    person.width = 0.25f;
    scaller(person.surface, 0.05f, &person.width, &person.height);
    personId = scene_addRenderObject(&gameScene, person, personPositionX, personPositionY);

    scoreText = EMPTY_RENDER_OBJECT;
    strcpy(scoreText.name, "scoreText");
    SDL_Color black = {0, 0, 0, 255};
    text_renderText(&scoreText, 50, 0.5f, black, "./assets/fonts/Quinquefive.ttf", 40, "jetons: %d", (unsigned)jetons);
    scoreTextId = scene_addRenderObject(&gameScene, scoreText, gameScene.x + 2, 0);


    SDL_Surface* strengthBarSurface = IMG_Load("./assets/img/strengthBar.png");
    strcpy(strengthBar.name, "strengthBar");
    strengthBar.z = 100;
    strengthBar.surface = strengthBarSurface;
    strengthBar.width = 0.50f;
    strengthBar.height = 0.025f;
    strengthBarId = scene_addRenderObject(&gameScene, strengthBar, 0.30f * CAMERA_WIDTH, 0.9f * CAMERA_HEIGHT);


    SDL_Surface* strengthBarSliderSurface = IMG_Load("./assets/img/building.png");
    strcpy(strengthBarSlider.name, "strengthBarSlider");
    strengthBarSlider.z = 101;
    strengthBarSlider.surface = strengthBarSliderSurface;
    strengthBarSlider.width = 0.005f;
    strengthBarSlider.height = 0.05f;
    strengthBarSliderId = scene_addRenderObject(&gameScene, strengthBarSlider, 0.30f * CAMERA_WIDTH, 0.89f * CAMERA_HEIGHT);

    return 0;
}

int game_render([[maybe_unused]] float delta){
    deltaAccu += delta;

    if(!isSpaceKeypressed && !crashed && deltaAccu >= SLIDER_SPEED){
        // if(increaseStrength && strength >= 2.f)
        //     increaseStrength = false;
        // else if(increaseStrength)
        //     strength += 0.1;
        // else if(!increaseStrength && strength <= 0.f)
        //     increaseStrength = true;
        // else
        //     strength -= 0.1;

        if(increaseStrengthBarSlider && strengthBarSliderDistance >= 0.50f)
            increaseStrengthBarSlider = false;
        else if(increaseStrengthBarSlider){
            strengthBarSliderDistance += 0.005f;
            scene_moveRenderObject(&gameScene, strengthBarSliderId, 0.30f * CAMERA_WIDTH + strengthBarSliderDistance * CAMERA_WIDTH, 0.89f * CAMERA_HEIGHT);
        }
        else if(!increaseStrengthBarSlider && strengthBarSliderDistance <= 0.0001f)
            increaseStrengthBarSlider = true;
        else{
            strengthBarSliderDistance -= 0.005f;
            scene_moveRenderObject(&gameScene, strengthBarSliderId, 0.30f * CAMERA_WIDTH + strengthBarSliderDistance * CAMERA_WIDTH, 0.89f * CAMERA_HEIGHT);
        }

        deltaAccu = 0;
    }
    // if(!crashed && deltaAccu >= SPEED && isSpaceKeypressed){
    if(!crashed && isSpaceKeypressed){
        const float distance = personVelocityX * delta;
        personPositionX += distance;
        gameScene.x = personPositionX - startPersonPositionX;

        personVelocityY += GRAVITY * delta;

        personPositionY += personVelocityY * delta;
        jetons += distance;
        scene_moveRenderObject(&gameScene, scoreTextId, gameScene.x + 2, 0);

        if(personPositionY + CAMERA_HEIGHT * person.height >= CAMERA_HEIGHT - 2){
            crashed = true;
            scene_removeRenderObject(&gameScene, scoreTextId);
            SDL_Color black = {0, 0, 0, 255};
            text_renderText(&scoreText, 50, 0.5f, black, "./assets/fonts/Quinquefive.ttf", 40, "jetons: %d", (unsigned)jetons);
            scoreTextId = scene_addRenderObject(&gameScene, scoreText, gameScene.x + 2, 0);
        }


    }

    scene_moveRenderObject(&gameScene, personId, personPositionX, personPositionY);


    return 0;
}

void game_remove(void){
    scene_free(&gameScene);
    Mix_FreeMusic(music);
}


void game_handleSpaceKeyInput(void){
    if(crashed){
        crashed = false;
        personPositionX = startPersonPositionX;
        personPositionY = startPersonPositionY;
        personVelocityX = startPersonVelocityX;
        personVelocityY = 0;
        isSpaceKeypressed = false;
        gameScene.x = 0;
        gameScene.y = 0;
        strengthBarSliderDistance = 0.f;
        scene_moveRenderObject(&gameScene, scoreTextId, gameScene.x + 2, 0);
        scene_moveRenderObject(&gameScene, strengthBarId, 0.30f * CAMERA_WIDTH, 0.9f * CAMERA_HEIGHT);
    }
    else{
        isSpaceKeypressed = true;
        strength = - 32 * powf(fabs(strengthBarSliderDistance - 0.5f/2), 2) + 2;
        personVelocityX *= strength * adameStrength;
        scene_moveRenderObject(&gameScene, strengthBarId, 0, CAMERA_HEIGHT * 2);
        scene_moveRenderObject(&gameScene, strengthBarSliderId, 0, CAMERA_HEIGHT * 2);

    }
}