1/*******************************************************************************************
2*
3* raylib [textures] example - Texture loading and drawing a part defined by a rectangle
4*
5* This example has been created using raylib 1.3 (www.raylib.com)
6* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
7*
8* Copyright (c) 2014 Ramon Santamaria (@raysan5)
9*
10********************************************************************************************/
11
12#include "raylib.h"
13
14#define MAX_FRAME_SPEED 15
15#define MIN_FRAME_SPEED 1
16
17int main(void)
18{
19 // Initialization
20 //--------------------------------------------------------------------------------------
21 const int screenWidth = 800;
22 const int screenHeight = 450;
23
24 InitWindow(screenWidth, screenHeight, "raylib [texture] example - texture rectangle");
25
26 // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
27 Texture2D scarfy = LoadTexture("resources/scarfy.png"); // Texture loading
28
29 Vector2 position = { 350.0f, 280.0f };
30 Rectangle frameRec = { 0.0f, 0.0f, (float)scarfy.width/6, (float)scarfy.height };
31 int currentFrame = 0;
32
33 int framesCounter = 0;
34 int framesSpeed = 8; // Number of spritesheet frames shown by second
35
36 SetTargetFPS(60); // Set our game to run at 60 frames-per-second
37 //--------------------------------------------------------------------------------------
38
39 // Main game loop
40 while (!WindowShouldClose()) // Detect window close button or ESC key
41 {
42 // Update
43 //----------------------------------------------------------------------------------
44 framesCounter++;
45
46 if (framesCounter >= (60/framesSpeed))
47 {
48 framesCounter = 0;
49 currentFrame++;
50
51 if (currentFrame > 5) currentFrame = 0;
52
53 frameRec.x = (float)currentFrame*(float)scarfy.width/6;
54 }
55
56 if (IsKeyPressed(KEY_RIGHT)) framesSpeed++;
57 else if (IsKeyPressed(KEY_LEFT)) framesSpeed--;
58
59 if (framesSpeed > MAX_FRAME_SPEED) framesSpeed = MAX_FRAME_SPEED;
60 else if (framesSpeed < MIN_FRAME_SPEED) framesSpeed = MIN_FRAME_SPEED;
61 //----------------------------------------------------------------------------------
62
63 // Draw
64 //----------------------------------------------------------------------------------
65 BeginDrawing();
66
67 ClearBackground(RAYWHITE);
68
69 DrawTexture(scarfy, 15, 40, WHITE);
70 DrawRectangleLines(15, 40, scarfy.width, scarfy.height, LIME);
71 DrawRectangleLines(15 + frameRec.x, 40 + frameRec.y, frameRec.width, frameRec.height, RED);
72
73 DrawText("FRAME SPEED: ", 165, 210, 10, DARKGRAY);
74 DrawText(FormatText("%02i FPS", framesSpeed), 575, 210, 10, DARKGRAY);
75 DrawText("PRESS RIGHT/LEFT KEYS to CHANGE SPEED!", 290, 240, 10, DARKGRAY);
76
77 for (int i = 0; i < MAX_FRAME_SPEED; i++)
78 {
79 if (i < framesSpeed) DrawRectangle(250 + 21*i, 205, 20, 20, RED);
80 DrawRectangleLines(250 + 21*i, 205, 20, 20, MAROON);
81 }
82
83 DrawTextureRec(scarfy, frameRec, position, WHITE); // Draw part of the texture
84
85 DrawText("(c) Scarfy sprite by Eiden Marsal", screenWidth - 200, screenHeight - 20, 10, GRAY);
86
87 EndDrawing();
88 //----------------------------------------------------------------------------------
89 }
90
91 // De-Initialization
92 //--------------------------------------------------------------------------------------
93 UnloadTexture(scarfy); // Texture unloading
94
95 CloseWindow(); // Close window and OpenGL context
96 //--------------------------------------------------------------------------------------
97
98 return 0;
99}