started pong game

pong/Makefile

@@ -0,0 +1,6 @@
+SRC := ../util.c pong.c
+OUT := ../bin/pong
+LIBS := -lraylib -lGL -lm -lpthread -ldl -lrt -lX11
+
+make all:
+	gcc $(SRC) -o $(OUT) $(LIBS)

pong/pong.c

@@ -0,0 +1,112 @@
+#include <raylib.h>
+
+const int screenWidth = 800;
+const int screenHeight = 450;
+
+enum control_keys {
+    MOVE_UP,
+    MOVE_DOWN,
+    BOOST
+} control_key;
+
+typedef struct player {
+    float x;
+    float y;
+    int width;
+    int height;
+    int velocity;
+    int controls[3];
+} Player;
+int init_vel = 300;
+
+void move_player(Player* p){
+    if (IsKeyDown(p->controls[MOVE_DOWN])){
+        p->y += p->velocity * GetFrameTime();
+        if (p->y > screenHeight){
+            p->y = -p->height;
+        }
+    } else if (IsKeyDown(p->controls[MOVE_UP])){
+        p->y -= p->velocity * GetFrameTime();
+        if (p->y < -p->height){
+            p->y = screenHeight;
+        }
+    }
+}
+
+void apply_boost(Player* p){
+    if (IsKeyPressed(p->controls[BOOST])){
+        p->velocity *= 2;
+    }
+    else if (IsKeyUp(p->controls[BOOST])){
+        p->velocity = init_vel;
+    }
+
+}
+
+void draw_player(Player* p){
+    DrawRectangle(p->x, p->y, p->width, p->height, BLACK);
+}
+
+
+typedef struct ball {
+    float x;
+    float y;
+    float r;
+    int vel_x;
+    int vel_y;
+    Player* target;
+} Ball;
+
+void move_ball(Ball *b){
+    b->y += b->vel_y * GetFrameTime();
+    if (b->y < b->r || b->y > screenHeight - b->r) {
+        b->vel_y *= -1;
+        b->y += b->vel_y * GetFrameTime();
+    }
+    b->x += b->vel_x * GetFrameTime();
+    if (b->x < b->r || b->x > screenWidth - b->r) {
+        b->vel_x *= -1;
+        b->x += b->vel_x * GetFrameTime();
+    }
+    /* if (p->x > p->target->){ */
+
+    /* } */
+}
+
+void draw_ball(Ball* b){
+    DrawCircle(b->x, b->y, b->r, BLACK);
+}
+
+int main(void){
+    InitWindow(screenWidth, screenHeight, "Pong");
+    Player p[2] =
+        {{ .x = 30, .y = 30, .width = 10, .height = 60, .velocity = init_vel,
+             .controls = {KEY_W, KEY_S, KEY_LEFT_SHIFT}},
+         { .x = screenWidth - 30, .width = 10, .height = 60, .velocity = init_vel,
+           .controls = {KEY_UP, KEY_DOWN, KEY_RIGHT_SHIFT}}};
+    Ball ball = { .x = screenWidth / 2, .y = screenHeight / 2, .r = 10,
+                  .vel_x = 300, .vel_y = 300};
+
+    while (!WindowShouldClose()){
+
+        apply_boost(&p[0]);
+        apply_boost(&p[1]);
+
+        move_player(&p[0]);
+        move_player(&p[1]);
+
+        move_ball(&ball);
+
+        BeginDrawing();
+
+        ClearBackground(WHITE);
+        DrawText("Hello world!", screenWidth/2, screenHeight/2, 20, BLACK);
+
+        draw_player(&p[0]);
+        draw_player(&p[1]);
+        draw_ball(&ball);
+
+        EndDrawing();
+    }
+    return 0;
+}