Multimedia Functions to Use

The following function and procedure declarations provide you with access to the functionality in SplashKit to open windows, draw things, and interact with the user. The main difference is the style of identifier used - for example OpenWindow is now open_window.

// These needs...
// #include "splashkit.h";

window open_window(string caption, int width, int height);
void clear_screen();
void refresh_screen();

// Event loop
void process_events();
bool quit_requested();

// Colors
color color_white();
color color_blue();
// and many others...

// Drawing
void fill_rectangle(Color clr, double x, double y, double width, double height);
void draw_rectangle(Color clr, double x, double y, double width, double height);

void fill_ellipse(Color clr, double x, double y, double width, double height);
void draw_ellipse(Color clr, double x, double y, double width, double height);

void fill_triangle(Color clr, double x1, double y1, double x2, double y2, double x3, double y3);
void draw_triangle(Color clr, double x1, double y1, double x2, double y2, double x3, double y3);

void draw_line(Color clr, double x1, double y1, double x2, double y2);


// Key input
// This also requiers... to get access to the KeyCode details.
// using SplashKitSDK;
bool key_down(KeyCode key);

// Random numbers
float rnd(); // 0 to 1
int rnd(int ubound); // 0 to ubound - 1
int rnd(int min, int max); // min to max


// Time tracking
timer create_timer(string name);
void start_timer(string name);
uint timer_ticks(string name);

// Collision detection
bool circles_intersect(double c1_x_, double c1_y_, double c1_radius, double c2_x, double c2_y, double c2_radius);

Key Codes

The key_code values in C/C++ act like constants, so are all uppercase:

BACKSPACE_KEY_	TAB_KEY	RETURN_KEY	ESCAPE_KEY	SPACE_KEY
NUM0_KEY	NUM1_KEY	NUM2_KEY	NUM3_KEY	NUM4_KEY
NUM5_KEY	NUM6_KEY	NUM7_KEY	NUM8_KEY	NUM9_KEY
COLON_KEY	SEMICOLON_KEY	A_KEY	B_KEY	C_KEY
D_KEY	E_KEY	F_KEY	G_KEY	H_KEY
I_KEY	J_KEY	K_KEY	L_KEY	M_KEY
N_KEY	O_KEY	P_KEY	Q_KEY	R_KEY
S_KEY	T_KEY	U_KEY	V_KEY	W_KEY
X_KEY	Y_KEY	Z_KEY	DELETE_KEY	KEYPAD_0
KEYPAD_1	KEYPAD_2	KEYPAD_3	KEYPAD_4	KEYPAD_5
KEYPAD_6	KEYPAD_7	KEYPAD_8	KEYPAD_9	KEYPAD_PERIOD
KEYPAD_DIVIDE	KEYPAD_MULTIPLY	KEYPAD_MINUS	KEYPAD_PLUS	KEYPAD_ENTER
KEYPAD_EQUALS	UP_KEY	DOWN_KEY	RIGHT_KEY	LEFT_KEY
INSERT_KEY	HOME_KEY	END_KEY	PAGE_UP_KEY	PAGE_DOWN_KEY
F1_KEY	F2_KEY	F3_KEY	F4_KEY	F5_KEY
F6_KEY	F7_KEY	F8_KEY	F9_KEY	F10_KEY
F11_KEY	F12_KEY	F13_KEY	F14_KEY	F15_KEY
RIGHT_SHIFT_KEY	LEFT_SHIFT_KEY	RIGHT_CTRL_KEY	LEFT_CTRL_KEY	RIGHT_ALT_KEY
LEFT_ALT_KEY	LEFT_SUPER_KEY	RIGHT_SUPER_KEY

:::

Example Multimedia Code

The following code demonstrates how to use these functions and procedures to create an interactive program.

#include "splashkit.h"

const int MOVE_SPEED = 3;

int main()
{
  open_window("Movement", 800, 600);

  // Event loop
  double x = 400;
  color clr = color_black();

  while( !quit_requested() )
  {
    process_events();

    if (key_down(RIGHT_KEY))
    {
      x += MOVE_SPEED;
    }

    if (key_down(LEFT_KEY))
    {
      x -= MOVE_SPEED;
    }

    if (key_typed(SPACE_KEY))
    {
      clr = random_color();
    }

    clear_screen(color_white());
    fill_circle(clr, x, 300, 50);
    refresh_screen(60);
  }
}