Add image.

Makefile

@@ -1,4 +1,5 @@
 CC=clang
+DFLAGS=
 FLAGS=-Wall -Wextra -g
 LIBS=-I/opt/homebrew/include -I/opt/homebrew/include/SDL2 -L/opt/homebrew/lib -lSDL2 -lSDL2_ttf
 
@@ -6,8 +7,8 @@ all: clean build
 
 build: pingpong
 
-pingpong: pingpong.c
-	${CC} ${FLAGS} ${LIBS} pingpong.c -o pingpong
+pingpong: pingpong.c queue.c
+	${CC} ${FLAGS} ${DFLAGS} ${LIBS} pingpong.c queue.c -o pingpong
 
 clean:
 	rm -rf pingpong.dSYM pingpong

README.md

@@ -1,8 +1,38 @@
+![Screenshot of a gameplay.](/screenshot.png)
+
 # Build
 For MacOS:
-`make`
 
+```
+make
+```
 For other platforms modify flags in the Makefile.
 
+# FPS
+Cap FPS:
+
+```
+make DFLAGS="-D FPS=30"
+```
+
+Display FPS:
+
+```
+make DFLAGS="-D ENABLE_FPS=1"
+```
+
+# Embed Fonts
+
+```
+xxd -i iosevka-bold.ttf > iosevka_bold.h
+make DFLAGS="-D EMBED_FONTS=1"
+```
+
 # Run
-`./pingpong`
+```
+./pingpong
+```
+
+# Iosevka Font
+[typeof.net/Iosevka](https://typeof.net/Iosevka/)
+[LICENSE](https://github.com/be5invis/Iosevka/blob/main/LICENSE.md)

pingpong.c

@@ -1,114 +1,17 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <time.h>
+
 #include <SDL2/SDL.h>
 #include <SDL_ttf.h>
 
-#define TRUE 1
-#define FALSE 0
+#include "types.h"
+#include "settings.h"
+#include "queue.h"
 
-#define WINDOW_WIDTH 800
-#define WINDOW_HEIGHT 600
-
-#define FPS 120
-#define TARGET_FRAME_TIME (1000 / FPS)
-
-typedef struct {
-    float x;
-    float y;
-} vector2;
-
-typedef struct {
-    float r;
-    float g;
-    float b;
-} vector3;
-
-typedef struct {
-    float r;
-    float g;
-    float b;
-    float a;
-} vector4;
-
-typedef struct {
-    float w;
-    float h;
-} rect;
-
-typedef struct {
-    vector2 point;
-    vector2 velocity;
-    vector2 dimension;
-    vector4 color;
-} particle;
-
-struct node {
-    struct node *next;
-    particle data;
-};
-
-typedef struct {
-    struct node *first;
-    struct node *last;
-} queue;
-
-void qinit(queue *item)
-{
-    item->first = NULL;
-    item->last = NULL;
-}
-
-void qput(queue *item, particle data)
-{
-    if(!item->first) {
-        item->first = malloc(sizeof(struct node));
-        item->last = item->first;
-    } else {
-        item->last->next = malloc(sizeof(struct node));
-        item->last = item->last->next;
-    }
-    item->last->data = data;
-    item->last->next = NULL;
-}
-
-void qget(queue *item, particle *data)
-{
-    if(data)
-        *data = item->first->data;
-
-    struct node *tmp = item->first;
-    item->first = item->first->next;
-    if(!item->first)
-        item->last = NULL;
-    free(tmp);
-}
-
-int qempty(queue *item)
-{
-    return !item->first;
-}
-
-typedef struct {
-    int is_running;
-    int last_frame_time;
-
-    struct ball {
-        vector2 point;
-        vector2 velocity;
-        vector2 dimension;
-    } ball;
-
-    struct player {
-        vector2 point;
-        vector2 dimension;
-        float vy;
-        int score;
-        int up;
-        int down;
-    } player_one, player_two;
-
-    queue particles;
-} game_state;
+#if EMBED_FONTS
+#include "iosevka_bold.h"
+#endif
 
 void exit_error(const char *error)
 {
@@ -116,38 +19,55 @@ void exit_error(const char *error)
     exit(1);
 }
 
-void initialize_window(SDL_Window **window, SDL_Renderer **renderer)
+void initialize_window(game_state *state)
 {
     int sdl;
     sdl = SDL_Init(SDL_INIT_EVERYTHING);
     if(sdl != 0)
         exit_error("Error initializing SDL.");
 
-    *window = SDL_CreateWindow(
+    state->window = SDL_CreateWindow(
         NULL,
         SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
         WINDOW_WIDTH, WINDOW_HEIGHT,
         SDL_WINDOW_SHOWN);
-    if(!window)
+    if(!state->window)
         exit_error("Error creating SDL Window.");
 
-    *renderer = SDL_CreateRenderer(*window, -1, 0);
-    if(!renderer)
+    state->renderer = SDL_CreateRenderer(state->window, -1, 0);
+    if(!state->renderer)
         exit_error("Error creating SDL Renderer.");
 }
 
-void initialized_font(TTF_Font **font)
+void initialize_font(game_state *state)
 {
-    int ttf;
-    ttf = TTF_Init();
+    int ttf = TTF_Init();
     if(ttf < 0)
         exit_error("Error opening font.");
 
-    *font = TTF_OpenFont("./iosevka-bold.ttf", 36);
-    if(!font)
+#if EMBED_FONTS
+    SDL_RWops *font_mem = SDL_RWFromConstMem(iosevka_bold_ttf,
+        iosevka_bold_ttf_len);
+    if(!font_mem)
+        exit_error("Error creating font memory.");
+
+    state->font = TTF_OpenFontRW(font_mem, TRUE, 24);
+    if(!state->font)
+        exit_error("Error opening memory font.");
+#else
+    state->font = TTF_OpenFont("./iosevka-bold.ttf", 24);
+    if(!state->font)
         exit_error("Error opening font.");
+#endif
 }
 
+#if ENABLE_FPS
+int get_fps(game_state *state)
+{
+    return (int)(1.0f / state->delta_time);
+}
+#endif
+
 int rand_num(int m, int n)
 {
     return m + rand() / (RAND_MAX / (n - m + 1) + 1);
@@ -163,15 +83,27 @@ void collision_particles(game_state *state, vector3 color)
 {
     int i;
     particle fragment;
-    for(i = 0; i < 50; i++) {
-        fragment.point.x = state->ball.point.x;
-        fragment.point.y = state->ball.point.y;
+    for(i = 0; i < 30; i++) {
+        if(state->ball.point.x < WINDOW_WIDTH / 2)
+            fragment.point.x = state->ball.point.x;
+        else
+            fragment.point.x = state->ball.point.x + state->ball.dimension.x;
+
+        if(state->ball.point.y < WINDOW_HEIGHT / 2)
+            fragment.point.y = state->ball.point.y;
+        else
+            fragment.point.y = state->ball.point.y + state->ball.dimension.y;
+
         fragment.velocity.x = 
-            (float)rand_num(state->ball.velocity.x - 200, state->ball.velocity.x + 200) / 4.0f;
+            (float)rand_num((int)state->ball.velocity.x - 200,
+                (int)state->ball.velocity.x + 200) / 4.0f;
         fragment.velocity.y = 
-            (float)rand_num(state->ball.velocity.y - 200, state->ball.velocity.y + 200) / 4.0f;
-        fragment.dimension.x = 3.0f;
-        fragment.dimension.y = 3.0f;
+            (float)rand_num((int)state->ball.velocity.y - 200,
+                (int)state->ball.velocity.y + 200) / 4.0f;
+
+        fragment.dimension.x = (float)rand_num(3, 5);
+        fragment.dimension.y = fragment.dimension.x;
+
         fragment.color.r = color.r;
         fragment.color.g = color.g;
         fragment.color.b = color.b;
@@ -180,7 +112,7 @@ void collision_particles(game_state *state, vector3 color)
     }
 }
 
-void handle_ball(game_state *state, float delta_time)
+void handle_ball(game_state *state)
 {
     vector3 color;
 
@@ -216,26 +148,18 @@ void handle_ball(game_state *state, float delta_time)
 
     if(state->ball.point.x <= 0) {
         state->ball.point.x = WINDOW_WIDTH / 2;
-        state->ball.point.y = 0;
+        state->ball.point.y = 1;
         state->player_two.score += 1;
-        if(state->player_two.score > 5) {
-            state->player_two.score = 1;
-            state->player_one.score = 0;
-        }
     }
     if(state->ball.point.x >= WINDOW_WIDTH - state->ball.dimension.x) {
         state->ball.point.x = WINDOW_WIDTH / 2;
-        state->ball.point.y = 0;
+        state->ball.point.y = 1;
         state->player_one.score += 1;
-        if(state->player_one.score > 5) {
-            state->player_one.score = 1;
-            state->player_two.score = 0;
-        }
     }
 
     if(state->ball.point.y < 0) {
         state->ball.velocity.y *= -1;
-        state->ball.point.y = 0;
+        state->ball.point.y = 1;
 
         color.r = 198.0f;
         color.g = 204.0f;
@@ -252,77 +176,146 @@ void handle_ball(game_state *state, float delta_time)
         collision_particles(state, color);
     }
 
-    state->ball.point.x += state->ball.velocity.x * delta_time;
-    state->ball.point.y += state->ball.velocity.y * delta_time;
+    state->ball.point.x += state->ball.velocity.x * state->delta_time;
+    state->ball.point.y += state->ball.velocity.y * state->delta_time;
 }
 
-void handle_paddles(game_state *state, float delta_time)
+void handle_paddles(game_state *state)
 {
     if(state->player_one.up)
-        state->player_one.point.y -= state->player_one.vy * delta_time;
+        state->player_one.point.y -= state->player_one.vy * state->delta_time;
     if(state->player_one.down)
-        state->player_one.point.y += state->player_one.vy * delta_time;
+        state->player_one.point.y += state->player_one.vy * state->delta_time;
     if(state->player_two.up)
-        state->player_two.point.y -= state->player_one.vy * delta_time;
+        state->player_two.point.y -= state->player_one.vy * state->delta_time;
     if(state->player_two.down)
-        state->player_two.point.y += state->player_one.vy * delta_time;
+        state->player_two.point.y += state->player_one.vy * state->delta_time;
 }
 
-void handle_particles(game_state *state, float delta_time)
+void handle_particles(game_state *state)
 {
     if(!qempty(&state->particles)) {
         struct node *tmp = state->particles.first;
         while(tmp) {
-            tmp->data.color.a -= 2; /* TODO: Lock to delta time. */
+            tmp->data.color.a -= 300.0f * state->delta_time;
             if(tmp->data.color.a < 0.0f) {
                 tmp = tmp->next;
                 qget(&state->particles, NULL);
                 continue;
             }
-            tmp->data.point.x += tmp->data.velocity.x * delta_time;
-            tmp->data.point.y += tmp->data.velocity.y * delta_time;
+            tmp->data.point.x += tmp->data.velocity.x * state->delta_time;
+            tmp->data.point.y += tmp->data.velocity.y * state->delta_time;
 
             tmp = tmp->next;
         }
     }
 }
 
-void render_score(game_state *state, SDL_Renderer *renderer, TTF_Font *font)
-{
-    /* Build score string */
-    char *score;
-    score = malloc(3*sizeof(char));
-    score[0] = (char)(state->player_one.score + 48); /* FIX */
-    score[1] = ':';
-    score[2] = (char)(state->player_two.score + 48);
-
+void render_text_leading(game_state *state, const char *text, int fsize,
+    vector2 pos, vector4 color)
+{    
     /* Render */
-    SDL_Surface *text;
-    SDL_Color color = { 198, 204, 215, 255 };
-    text = TTF_RenderText_Solid(font, score, color);
-    if (!text)
-        exit_error("Error initializing Text.");
+    TTF_SetFontSize(state->font, fsize);
+    SDL_Surface *text_surface;
+    SDL_Color surface_color = { 
+        (int)color.r, (int)color.g, (int)color.b, (int)color.a };
+    text_surface = TTF_RenderText_Solid(state->font, text, surface_color);
+    if (!text_surface)
+        exit_error("Error initializing text surface.");
 
     SDL_Texture *text_texture;
-    text_texture = SDL_CreateTextureFromSurface(renderer, text);
-    SDL_Rect dest = { WINDOW_WIDTH/2-20, 10, text->w, text->h };
-    SDL_RenderCopy(renderer, text_texture, NULL, &dest);
+    text_texture = SDL_CreateTextureFromSurface(state->renderer,
+        text_surface);
+    if (!text_texture)
+        exit_error("Error initializing text texture.");
+
+    SDL_Rect dest = { (int)pos.x, (int)pos.y, text_surface->w,
+        text_surface->h };
+    SDL_RenderCopy(state->renderer, text_texture, NULL, &dest);
 
     /* free */
     SDL_DestroyTexture(text_texture);
-    SDL_FreeSurface(text);
+    SDL_FreeSurface(text_surface);
+}
+
+void render_text_centered(game_state *state, const char *text, int fsize,
+    vector2 pos, vector4 color)
+{    
+    /* Render */
+    TTF_SetFontSize(state->font, fsize);
+    SDL_Surface *text_surface;
+    SDL_Color surface_color = { 
+        (int)color.r, (int)color.g, (int)color.b, (int)color.a };
+    text_surface = TTF_RenderText_Solid(state->font, text, surface_color);
+    if (!text_surface)
+        exit_error("Error initializing text surface.");
+
+    SDL_Texture *text_texture;
+    text_texture = SDL_CreateTextureFromSurface(state->renderer,
+        text_surface);
+    if (!text_texture)
+        exit_error("Error initializing text texture.");
+
+    SDL_Rect dest = { (int)(pos.x - (float)text_surface->w / 2), (int)pos.y,
+        text_surface->w, text_surface->h };
+    SDL_RenderCopy(state->renderer, text_texture, NULL, &dest);
+
+    /* free */
+    SDL_DestroyTexture(text_texture);
+    SDL_FreeSurface(text_surface);
+
+}
+
+void render_score(game_state *state)
+{
+    /* Build score string */
+    char *score;
+    score = malloc(10*sizeof(char));
+
+    /* Render player one score */
+    sprintf(score, "%d", state->player_one.score);
+    vector2 pos = { (float)(WINDOW_WIDTH / 4), 10.0f };
+    vector4 color = { 198.0f, 204.0f, 215.0f, 255.0f };
+    render_text_centered(state, score, 30, pos, color);
+
+    /* Render player two score */
+    sprintf(score, "%d", state->player_two.score);
+    pos.x = WINDOW_WIDTH - pos.x;
+    render_text_centered(state, score, 30, pos, color);
+    sprintf(score, "%d", state->player_one.score);
+
+    /* free */
     free(score);
 }
 
-void render_ball(game_state *state, SDL_Renderer *renderer)
+#if ENABLE_FPS
+void render_fps(game_state *state)
+{
+    /* Build score string */
+    char *fps;
+    fps = malloc(10*sizeof(char));
+    sprintf(fps, "%d", get_fps(state));
+
+    /* Render */
+    vector2 pos = { 10.0f, 10.0f };
+    vector4 color = { 198.0f, 204.0f, 215.0f, 255.0f };
+    render_text_leading(state, fps, 16, pos, color);
+
+    /* free */
+    free(fps);
+}
+#endif
+
+
+void render_ball(game_state *state)
 {
     SDL_Rect ball_rect = { state->ball.point.x, state->ball.point.y,
         state->ball.dimension.x, state->ball.dimension.y };
-    SDL_SetRenderDrawColor(renderer, 198, 204, 215, 255);
-    SDL_RenderFillRect(renderer, &ball_rect);
+    SDL_SetRenderDrawColor(state->renderer, 198, 204, 215, 255);
+    SDL_RenderFillRect(state->renderer, &ball_rect);
 }
 
-void render_paddles(game_state *state, SDL_Renderer *renderer)
+void render_paddles(game_state *state)
 {
     SDL_Rect player_one_rect = {
         state->player_one.point.x, state->player_one.point.y,
@@ -331,14 +324,14 @@ void render_paddles(game_state *state, SDL_Renderer *renderer)
         state->player_two.point.x, state->player_two.point.y,
         state->player_two.dimension.x, state->player_two.dimension.y };
 
-    SDL_SetRenderDrawColor(renderer, 215, 78, 66, 255);
-    SDL_RenderFillRect(renderer, &player_one_rect);
+    SDL_SetRenderDrawColor(state->renderer, 215, 78, 66, 255);
+    SDL_RenderFillRect(state->renderer, &player_one_rect);
 
-    SDL_SetRenderDrawColor(renderer, 16, 133, 255, 255);
-    SDL_RenderFillRect(renderer, &player_two_rect);
+    SDL_SetRenderDrawColor(state->renderer, 16, 133, 255, 255);
+    SDL_RenderFillRect(state->renderer, &player_two_rect);
 }
 
-void render_particles(game_state *state, SDL_Renderer *renderer)
+void render_particles(game_state *state)
 {
     if(!qempty(&state->particles)) {
         SDL_Rect particle_rect;
@@ -349,19 +342,36 @@ void render_particles(game_state *state, SDL_Renderer *renderer)
             particle_rect.w = tmp->data.dimension.x;
             particle_rect.h = tmp->data.dimension.y;
 
-            SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
-            SDL_SetRenderDrawColor(renderer,
+            SDL_SetRenderDrawBlendMode(state->renderer, SDL_BLENDMODE_BLEND);
+            SDL_SetRenderDrawColor(state->renderer,
                 (Uint8)tmp->data.color.r, (Uint8)tmp->data.color.g,
                 (Uint8)tmp->data.color.b, (Uint8)tmp->data.color.a);
-            SDL_RenderFillRect(renderer, &particle_rect);
+            SDL_RenderFillRect(state->renderer, &particle_rect);
 
             tmp = tmp->next;
         }
     }
 }
 
+/* TODO: ??? */
+void render_divider(game_state *state)
+{
+    SDL_SetRenderDrawColor(state->renderer, 13, 17, 23, 255);
+    SDL_RenderDrawLine(state->renderer, (int)(WINDOW_WIDTH / 2), 0, 
+        (int)(WINDOW_WIDTH / 2), WINDOW_HEIGHT);
+    SDL_RenderDrawLine(state->renderer, (int)(WINDOW_WIDTH / 2) - 1, 0, 
+        (int)(WINDOW_WIDTH / 2) - 1, WINDOW_HEIGHT);
+    SDL_RenderDrawLine(state->renderer, (int)(WINDOW_WIDTH / 2) + 1, 0, 
+        (int)(WINDOW_WIDTH / 2) + 1, WINDOW_HEIGHT);
+}
+
 void setup(game_state *state)
 {
+    srand(time(NULL));
+
+    initialize_window(state);
+    initialize_font(state);
+
     state->is_running = TRUE;
     state->last_frame_time = 0;
 
@@ -371,14 +381,14 @@ void setup(game_state *state)
     state->ball.point.y = 40;
     state->ball.dimension.x = 15;
     state->ball.dimension.y = 15;
-    state->ball.velocity.x = 500;
-    state->ball.velocity.y = 600;
+    state->ball.velocity.x = 700;
+    state->ball.velocity.y = 400;
 
     state->player_one.point.x = 10;
     state->player_one.point.y = 10;
     state->player_one.dimension.x = 10;
     state->player_one.dimension.y = 100;
-    state->player_one.vy = 600;
+    state->player_one.vy = 800;
     state->player_one.score = 0;
     state->player_one.up = FALSE;
     state->player_one.down = FALSE;
@@ -387,7 +397,7 @@ void setup(game_state *state)
     state->player_two.point.y = 10;
     state->player_two.dimension.x = 10;
     state->player_two.dimension.y = 100;
-    state->player_two.vy = 600;
+    state->player_two.vy = 800;
     state->player_two.score = 0;
     state->player_two.up = FALSE;
     state->player_two.down = FALSE;
@@ -439,7 +449,6 @@ void process_input(game_state *state)
 void update(game_state *state)
 {
     int time_to_wait;
-    float delta_time;
 
     time_to_wait = TARGET_FRAME_TIME - (SDL_GetTicks() - 
         state->last_frame_time);
@@ -447,55 +456,60 @@ void update(game_state *state)
     if(time_to_wait > 0 && time_to_wait <= TARGET_FRAME_TIME)
         SDL_Delay(time_to_wait);
 
-    delta_time = (SDL_GetTicks() - state->last_frame_time) / 1000.0f;
+    state->delta_time = (SDL_GetTicks() - state->last_frame_time) / 1000.0f;
 
     state->last_frame_time = SDL_GetTicks();
 
-    handle_ball(state, delta_time);
-    handle_paddles(state, delta_time);
-    handle_particles(state, delta_time);
+    handle_ball(state);
+    handle_paddles(state);
+    handle_particles(state);
 }
 
-void render(game_state *state, SDL_Renderer *renderer, TTF_Font *font)
+void render(game_state *state)
 {
-    SDL_SetRenderDrawColor(renderer, 24, 26, 31, 255);
-    SDL_RenderClear(renderer);
+    SDL_SetRenderDrawColor(state->renderer, 24, 26, 31, 255);
+    SDL_RenderClear(state->renderer);
 
-    render_paddles(state, renderer);
-    render_ball(state, renderer);
-    render_score(state, renderer, font);
-    render_particles(state, renderer);
+    render_divider(state);
 
-    SDL_RenderPresent(renderer);
+    render_paddles(state);
+    render_ball(state);
+    render_particles(state);
+
+    render_score(state);
+#if ENABLE_FPS
+    render_fps(state);
+#endif
+
+    SDL_RenderPresent(state->renderer);
 }
 
-void destroy_window(SDL_Window *window, SDL_Renderer *renderer)
+void destroy_window(game_state *state)
 {
-    SDL_DestroyRenderer(renderer);
-    SDL_DestroyWindow(window);
+    SDL_DestroyRenderer(state->renderer);
+    SDL_DestroyWindow(state->window);
     SDL_Quit();
 }
 
+void destroy_font(game_state *state)
+{
+    TTF_CloseFont(state->font);
+    TTF_Quit();
+}
+
 int main()
 {
-    srand(time(NULL));
-
     game_state state;
-    SDL_Window *window = NULL;
-    SDL_Renderer *renderer = NULL;
-    TTF_Font *font;
-
-    initialize_window(&window, &renderer);
-    initialized_font(&font);
 
     setup(&state);
     while(state.is_running) {
         process_input(&state);
         update(&state);
-        render(&state, renderer, font);
+        render(&state);
     }
 
-    destroy_window(window, renderer);
+    destroy_font(&state);
+    destroy_window(&state);
 
     return 0;
 }

queue.c

@@ -0,0 +1,37 @@
+#include "queue.h"
+
+void qinit(queue *item)
+{
+    item->first = NULL;
+    item->last = NULL;
+}
+
+void qput(queue *item, particle data)
+{
+    if(!item->first) {
+        item->first = malloc(sizeof(struct node));
+        item->last = item->first;
+    } else {
+        item->last->next = malloc(sizeof(struct node));
+        item->last = item->last->next;
+    }
+    item->last->data = data;
+    item->last->next = NULL;
+}
+
+void qget(queue *item, particle *data)
+{
+    if(data)
+        *data = item->first->data;
+
+    struct node *tmp = item->first;
+    item->first = item->first->next;
+    if(!item->first)
+        item->last = NULL;
+    free(tmp);
+}
+
+int qempty(queue *item)
+{
+    return !item->first;
+}

queue.h

@@ -0,0 +1,14 @@
+#ifndef QUEUE_H_SENTRY
+#define QUEUE_H_SENTRY
+
+#include "types.h"
+
+void qinit(queue *item);
+
+void qput(queue *item, particle data);
+
+void qget(queue *item, particle *data);
+
+int qempty(queue *item);
+
+#endif

settings.h

@@ -0,0 +1,28 @@
+#ifndef SETTINGS_H_SENTRY
+#define SETTINGS_H_SENTRY
+
+#ifndef WINDOW_WIDTH
+#define WINDOW_WIDTH 1000
+#endif
+
+#ifndef WINDOW_HEIGHT
+#define WINDOW_HEIGHT 650
+#endif
+
+#ifndef FPS
+#define FPS 120
+#endif
+
+#ifndef TARGET_FRAME_TIME
+#define TARGET_FRAME_TIME (1000 / FPS)
+#endif
+
+#ifndef ENABLE_FPS
+#define ENABLE_FPS 0
+#endif
+
+#ifndef EMBED_FONTS
+#define EMBED_FONTS 0
+#endif
+
+#endif

types.h

@@ -0,0 +1,84 @@
+#ifndef TYPES_H_SENTRY
+#define TYPES_H_SENTRY
+
+#include <stdlib.h>
+#include <SDL2/SDL.h>
+#include <SDL_ttf.h>
+
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+typedef struct {
+    float x;
+    float y;
+} vector2;
+
+typedef struct {
+    float r;
+    float g;
+    float b;
+} vector3;
+
+typedef struct {
+    float r;
+    float g;
+    float b;
+    float a;
+} vector4;
+
+typedef struct {
+    float w;
+    float h;
+} rect;
+
+typedef struct {
+    vector2 point;
+    vector2 velocity;
+    vector2 dimension;
+    vector4 color;
+} particle;
+
+struct node {
+    struct node *next;
+    particle data;
+};
+
+typedef struct {
+    struct node *first;
+    struct node *last;
+} queue;
+
+typedef struct {
+    SDL_Window *window;
+    SDL_Renderer *renderer;
+    TTF_Font *font;
+
+    int is_running;
+    int last_frame_time;
+    float delta_time;
+
+    struct {
+        vector2 point;
+        vector2 velocity;
+        vector2 dimension;
+    } ball;
+
+    struct {
+        vector2 point;
+        vector2 dimension;
+        float vy;
+        int score;
+        int up;
+        int down;
+    } player_one, player_two;
+
+    queue particles;
+} game_state;
+
+#endif