a-game

commit abe6a9f4d478286d17781a6edea54a9932d0f3c7
parent 0f660ef29106284fb5cfb0d8c297211a43295d56
Author: amin <dev@aminmesbah.com>
Date:   Sun, 31 Mar 2019 07:30:10 +0000

Get keyboard input

FossilOrigin-Name: 8913bec691b5b8a49be8723a3595bdc33b1e7cd92dd71c194a60acd390eb9de5
Diffstat:
M
src/game.c
 | 
10
++++++++++
M
src/game.h
 | 
16
++++++++++++++++
M
src/platform_linux.c
 | 
51
+++++++++++++++++++++++++++++++++++++++++++++++++++

3 files changed, 77 insertions(+), 0 deletions(-)
diff --git a/src/game.c b/src/game.c
@@ -169,6 +169,16 @@ void game_update_and_render(struct GameState *game_state, f32 dt, v2u framebuffe
         framebuffer.width,
         framebuffer.height,
     };
+
+    // test input
+    {
+        struct GameInput input = game_state->input;
+        printf("input.key_left: %d\n", input.key_left);
+        printf("input.key_right: %d\n", input.key_right);
+        printf("input.key_up: %d\n", input.key_up);
+        printf("input.key_down: %d\n", input.key_down);
+    }
+
     // update stars
     {
         for (size_t i = 0; i < game_state->stars.num_stars; ++i)
diff --git a/src/game.h b/src/game.h
@@ -28,6 +28,21 @@ struct Tiles
     u32 count;
 };
 
+enum InputKeyAction
+{
+    KEY_PRESS,
+    KEY_RELEASE,
+    KEY_REPEAT,
+};
+
+struct GameInput
+{
+    enum InputKeyAction key_left;
+    enum InputKeyAction key_right;
+    enum InputKeyAction key_up;
+    enum InputKeyAction key_down;
+};
+
 struct GameState
 {
     struct Tiles tiles;
@@ -38,6 +53,7 @@ struct GameState
     struct Shader star_shader;
     struct Shader triangle_shader;
     struct Stars stars;
+    struct GameInput input;
 };
 
 #ifdef PLATFORM_HOTLOAD_GAME_CODE
diff --git a/src/platform_linux.c b/src/platform_linux.c
@@ -11,6 +11,7 @@
 
 void error_callback(int error, const char* description);
 void framebuffer_size_callback(GLFWwindow* window, int width, int height);
+void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods);
 
 #ifdef PLATFORM_HOTLOAD_GAME_CODE
 time_t file_get_modified_time(char *file_path);
@@ -50,6 +51,7 @@ int main(void)
     }
     glfwMakeContextCurrent(window);
     glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
+    glfwSetKeyCallback(window, key_callback);
 
     if (!gladLoadGLLoader((GLADloadproc) glfwGetProcAddress))
     {
@@ -66,6 +68,7 @@ int main(void)
 #endif
 
     struct GameState game_state = {0};
+    glfwSetWindowUserPointer(window, &game_state);
     game_init(&game_state, glmth_v2u_init(PLATFORM_SCR_WIDTH, PLATFORM_SCR_HEIGHT));
 
 #ifdef PLATFORM_HOTLOAD_GAME_CODE
@@ -130,6 +133,54 @@ void framebuffer_size_callback(GLFWwindow* window, int width, int height)
 }
 
 
+void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
+{
+    //printf("key: %s, action: %d\n", glfwGetKeyName(key, scancode), action);
+    struct GameState* game_state = (struct GameState *)glfwGetWindowUserPointer(window);
+
+    enum InputKeyAction game_input_key_action = 0;
+    switch (action)
+    {
+        case GLFW_PRESS:
+            game_input_key_action = KEY_PRESS;
+            break;
+        case GLFW_RELEASE:
+            game_input_key_action = KEY_RELEASE;
+            break;
+        case GLFW_REPEAT:
+            game_input_key_action = KEY_REPEAT;
+            break;
+        default:
+            exit(1);
+            break;
+    }
+
+    enum InputKeyAction* game_key = NULL;
+    switch (key)
+    {
+        case GLFW_KEY_LEFT:
+            game_key = &(game_state->input.key_left);
+            break;
+        case GLFW_KEY_RIGHT:
+            game_key = &(game_state->input.key_right);
+            break;
+        case GLFW_KEY_UP:
+            game_key = &(game_state->input.key_up);
+            break;
+        case GLFW_KEY_DOWN:
+            game_key = &(game_state->input.key_down);
+            break;
+        default:
+            break;
+    }
+
+    if (game_key)
+    {
+        *game_key = game_input_key_action;
+    }
+}
+
+
 time_t file_get_modified_time(char *file_path)
 {
     time_t mtime = 0;