diff options
Diffstat (limited to 'src/core.c')
| -rw-r--r-- | src/core.c | 75 |
1 files changed, 67 insertions, 8 deletions
@@ -31,7 +31,8 @@ #include <GLFW/glfw3.h> // GLFW3 lib: Windows, OpenGL context and Input management //#include <GL/gl.h> // OpenGL functions (GLFW3 already includes gl.h) #include <stdio.h> // Standard input / output lib -#include <stdlib.h> // Declares malloc() and free() for memory management +#include <stdlib.h> // Declares malloc() and free() for memory management, rand() +#include <time.h> // Useful to initialize random seed #include <math.h> // Math related functions, tan() on SetPerspective #include "vector3.h" // Basic Vector3 functions @@ -59,7 +60,12 @@ static double frameTime; // Time measure for one frame static double targetTime = 0; // Desired time for one frame, if 0 not applied static int windowWidth, windowHeight; // Required to switch between windowed/fullscren mode (F11) -static char *windowTitle; // Required to switch between windowed/fullscren mode (F11) +static const char *windowTitle; // Required to switch between windowed/fullscren mode (F11) +static int exitKey = GLFW_KEY_ESCAPE; + +static bool customCursor = false; // Tracks if custom cursor has been set +static bool cursorOnScreen = false; // Tracks if cursor is inside client area +static Texture2D cursor; // Cursor texture static char previousKeyState[512] = { 0 }; // Required to check if key pressed/released once static char currentKeyState[512] = { 0 }; // Required to check if key pressed/released once @@ -83,6 +89,7 @@ extern void WriteBitmap(const char *fileName, const pixel *imgDataPixel, int wid static void InitGraphicsDevice(); // Initialize Graphics Device (OpenGL stuff) static void ErrorCallback(int error, const char *description); // GLFW3 Error Callback, runs on GLFW3 error static void KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods); // GLFW3 Keyboard Callback, runs on key pressed +static void CursorEnterCallback(GLFWwindow* window, int enter); // GLFW3 Cursor Enter Callback, cursor enters client area static void WindowSizeCallback(GLFWwindow* window, int width, int height); // GLFW3 WindowSize Callback, runs when window is resized static void CameraLookAt(Vector3 position, Vector3 target, Vector3 up); // Setup camera view (updates MODELVIEW matrix) static void SetPerspective(GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar); // Setup view projection (updates PROJECTION matrix) @@ -93,13 +100,21 @@ static void TakeScreenshot(); //---------------------------------------------------------------------------------- // Initialize Window and Graphics Context (OpenGL) -void InitWindow(int width, int height, char* title) +void InitWindow(int width, int height, const char *title) +{ + InitWindowEx(width, height, title, true, NULL); +} + +// Initialize Window and Graphics Context (OpenGL) with extended parameters +void InitWindowEx(int width, int height, const char* title, bool resizable, const char *cursorImage) { glfwSetErrorCallback(ErrorCallback); if (!glfwInit()) exit(1); - //glfwWindowHint(GLFW_SAMPLES, 4); // If called before windows creation, enables multisampling x4 (MSAA), default is 0 + //glfwDefaultWindowHints() // Set default windows hints + //glfwWindowHint(GLFW_SAMPLES, 4); // If called before windows creation, enables multisampling x4 (MSAA), default is 0 + if (!resizable) glfwWindowHint(GLFW_RESIZABLE, GL_FALSE); // Avoid window being resizable window = glfwCreateWindow(width, height, title, NULL, NULL); @@ -114,6 +129,7 @@ void InitWindow(int width, int height, char* title) } glfwSetWindowSizeCallback(window, WindowSizeCallback); + glfwSetCursorEnterCallback(window, CursorEnterCallback); glfwMakeContextCurrent(window); glfwSetKeyCallback(window, KeyCallback); @@ -125,6 +141,17 @@ void InitWindow(int width, int height, char* title) previousTime = glfwGetTime(); LoadDefaultFont(); + + if (cursorImage != NULL) + { + // Load image as texture + cursor = LoadTexture(cursorImage); + + glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); + customCursor = true; + } + + srand(time(NULL)); // Initialize random seed } // Close Window and Terminate Context @@ -136,6 +163,24 @@ void CloseWindow() glfwTerminate(); } +// Set a custom cursor icon/image +void SetCustomCursor(const char *cursorImage) +{ + if (customCursor) UnloadTexture(cursor); + + cursor = LoadTexture(cursorImage); + + glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); + customCursor = true; +} + +// Set a custom key to exit program +// NOTE: default exitKey is ESCAPE +void SetExitKey(int key) +{ + exitKey = key; +} + // Detect if KEY_ESCAPE pressed or Close icon pressed bool WindowShouldClose() { @@ -197,6 +242,8 @@ void BeginDrawing() // End canvas drawing and Swap Buffers (Double Buffering) void EndDrawing() { + if (customCursor && cursorOnScreen) DrawTexture(cursor, GetMouseX(), GetMouseY(), WHITE); + glfwSwapBuffers(window); // Swap back and front buffers glfwPollEvents(); // Register keyboard/mouse events @@ -294,6 +341,12 @@ int GetHexValue(Color color) return ((color.a << 24) + (color.r << 16) + (color.g << 8) + color.b); } +// Returns a random value between min and max (both included) +int GetRandomValue(int min, int max) +{ + return (rand()%(abs(max-min)+1) - abs(min)); +} + //---------------------------------------------------------------------------------- // Module Functions Definition - Input (Keyboard, Mouse, Gamepad) Functions //---------------------------------------------------------------------------------- @@ -529,14 +582,14 @@ bool IsGamepadButtonUp(int gamepad, int button) // GLFW3 Error Callback, runs on GLFW3 error static void ErrorCallback(int error, const char *description) { - //printf(description); - fprintf(stderr, "%s", description); + printf(description); + //fprintf(stderr, description); } // GLFW3 Keyboard Callback, runs on key pressed static void KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods) { - if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) + if (key == exitKey && action == GLFW_PRESS) { glfwSetWindowShouldClose(window, GL_TRUE); @@ -552,6 +605,12 @@ static void KeyCallback(GLFWwindow* window, int key, int scancode, int action, i } } +static void CursorEnterCallback(GLFWwindow* window, int enter) +{ + if (enter == GL_TRUE) cursorOnScreen = true; + else cursorOnScreen = false; +} + // GLFW3 WindowSize Callback, runs when window is resized static void WindowSizeCallback(GLFWwindow* window, int width, int height) { @@ -688,4 +747,4 @@ static void TakeScreenshot() free(imgDataPixel); shotNum++; -} +}
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