Add mouse callbacks

.gitignore

@@ -1 +1,3 @@
 build/
+cmake-build-*/
+.idea/

examples/atlas.cpp

@@ -9,9 +9,9 @@ namespace
 		glerminal_load_sprites_file("resources/atlas.png");
 	}
 
-	void mainloop(float dt)
+	void mainloop(double dt)
 	{
-		static float time = 1;
+		static double time = 1;
 
 		time += dt;
 
@@ -42,5 +42,5 @@ namespace
 
 int main(int argc, char** argv)
 {
-	glerminal_run(init, mainloop, nullptr, nullptr);
+	glerminal_run({init, mainloop});
 }

examples/basic.cpp

@@ -18,9 +18,9 @@ namespace
 		}
 	}
 
-	void mainloop(float dt)
+	void mainloop(double dt)
 	{
-		static float time = 0;
+		static double time = 0;
 
 		time += dt;
 		time = fmodf(time, 3.1415926f * 2);
@@ -39,5 +39,5 @@ namespace
 
 int main(int argc, char** argv)
 {
-	glerminal_run(init, mainloop, nullptr, nullptr);
+	glerminal_run({init, mainloop});
 }

examples/rogue.cpp

@@ -43,9 +43,9 @@ namespace
 		}
 	}
 
-	void mainloop(float dt)
+	void mainloop(double dt)
 	{
-		static float time = 0;
+		static double time = 0;
 		time += dt;
 
 		const float cx = GRID_WIDTH / 2.0f * cosf(time / 2) + GRID_WIDTH / 2.0f;
@@ -80,5 +80,5 @@ namespace
 
 int main(int argc, char** argv)
 {
-	glerminal_run(init, mainloop, nullptr, nullptr);
+	glerminal_run({init, mainloop});
 }

examples/towers.cpp

@@ -34,9 +34,9 @@ namespace
 		}
 	}
 
-	void mainloop(float dt)
+	void mainloop(double dt)
 	{
-		static float time = 0;
+		static double time = 0;
 
 		time += dt;
 
@@ -64,5 +64,5 @@ namespace
 
 int main(int argc, char** argv)
 {
-	glerminal_run(init, mainloop, nullptr, nullptr);
+	glerminal_run({init, mainloop});
 }

include/glerminal.h

@@ -9,17 +9,24 @@ extern "C"
 #endif
 
 typedef void (*glerminal_init_cb)();
-typedef void (*glerminal_main_cb)(float dt);
+typedef void (*glerminal_main_cb)(double dt);
 typedef void (*glerminal_keys_cb)(int key);
+typedef void (*glerminal_mousemoved_cb)(double x, double y);
+typedef void (*glerminal_mousepress_cb)(int button, double x, double y);
+
+typedef struct {
+ glerminal_init_cb init;
+ glerminal_main_cb main;
+ glerminal_keys_cb keypress, keyrelease;
+ glerminal_mousemoved_cb moved;
+ glerminal_mousepress_cb mousepress, mouserelease;
+} glerminal_init_params;
 
 /**
  * @brief Call init once, then run the application's mainloop
- * @param init initialization callback
+ * @param params Initialization parameters
- * @param main main calllback
- * @param pressed key pressed callback (can be null)
- * @param released key released callback (can be null)
  */
-void glerminal_run(glerminal_init_cb init, glerminal_main_cb main, glerminal_keys_cb pressed, glerminal_keys_cb released);
+void glerminal_run(glerminal_init_params params);
 
 void glerminal_quit();
 
@@ -30,39 +37,43 @@ void glerminal_flush();
 
 /**
  * @brief Set a cell's sprite
- * @param x position of the cell in the range [0, 40)
+ * @param x position of the cell in the range [0, GRID_WIDTH)
- * @param y position of the cell in the range [0, 25)
+ * @param y position of the cell in the range [0, GRID_HEIGHT)
- * @param layer layer of the cell in the range [0, 8)
+ * @param layer layer of the cell in the range [0, LAYER_COUNT)
- * @param sprite sprite's index in the range [0, 256)
+ * @param sprite sprite's index in the range [0, 4096)
  */
 void glerminal_set(unsigned char x, unsigned char y, unsigned char layer, unsigned short sprite);
 /**
  * @brief Get a cell's sprite
- * @param x position of the cell in the range [0, 40)
+ * @param x position of the cell in the range [0, GRID_WIDTH)
- * @param y position of the cell in the range [0, 25)
+ * @param y position of the cell in the range [0, GRID_HEIGHT)
- * @param layer layer of the cell in the range [0, 8)
+ * @param layer layer of the cell in the range [0, LAYER_COUNT)
  * @return sprite index currently assigned to the cell
  */
 unsigned char glerminal_get(unsigned char x, unsigned char y, unsigned short layer);
 /**
  * @brief Set a cell's offset
- * @param x position of the cell in the range [0, 40)
+ * @param x position of the cell in the range [0, GRID_WIDTH)
- * @param y position of the cell in the range [0, 25)
+ * @param y position of the cell in the range [0, GRID_HEIGHT)
- * @param layer layer of the cell in the range [0, 8)
+ * @param layer layer of the cell in the range [0, LAYER_COUNT)
- * @param x_offset offset of the cell on the x axis in the range [-128, 127], where 0 is no offset
+ * @param x_offset offset of the cell on the x axis in cells
- * @param y_offset offset of the cell on the y axis in the range [-128, 127], where 0 is no offset
+ * @param y_offset offset of the cell on the y axis in cells
  */
 void glerminal_offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset);
 
 /**
- * @brief Set a layer's color
+ * @brief Set a cell's color
- * @param layer The layer to modify
+ * @param x position of the cell in the range [0, GRID_WIDTH)
+ * @param y position of the cell in the range [0, GRID_HEIGHT)
+ * @param layer layer of the cell in the range [0, LAYER_COUNT)
  * @param color The new color
  */
 void glerminal_color(unsigned char x, unsigned char y, unsigned char layer, unsigned int color);
 /**
- * @brief Set a layer's scale
+ * @brief Set a cell's scale
- * @param layer The layer to modify
+ * @param x position of the cell in the range [0, GRID_WIDTH)
+ * @param y position of the cell in the range [0, GRID_HEIGHT)
+ * @param layer layer of the cell in the range [0, LAYER_COUNT)
  * @param scale The new scale
  */
 void glerminal_scale(unsigned char x, unsigned char y, unsigned char layer, float scale);

lua-examples/basic/main.lua

@@ -27,3 +27,9 @@ function glerminal.main(dt)
 
     glerminal.flush()
 end
+
+function glerminal.keypresse(key) end
+function glerminal.keyrelease(key) end
+function glerminal.mousemove(x, y) end
+function glerminal.mousepress(button, x, y) end
+function glerminal.mouserelease(button, x, y) end

source/glerminal-main.cpp

@@ -139,7 +139,7 @@ namespace
 		lua_remove(L, handler);
 	}
 
-	void mainloop(float dt)
+	void mainloop(double dt)
 	{
 		lua_pushcfunction(L, message_handler);
 		const int handler = lua_gettop(L);
@@ -155,7 +155,7 @@ namespace
 		lua_remove(L, handler);
 	}
 
-	void pressed(int key)
+	void keypressed(int key)
 	{
 		const char* const name = glfwGetKeyName(key, 0);
 		if (name)
@@ -163,7 +163,7 @@ namespace
 			lua_pushcfunction(L, message_handler);
 			const int handler = lua_gettop(L);
 			lua_getglobal(L, "glerminal");
-			lua_getfield(L, -1, "pressed");
+			lua_getfield(L, -1, "keypress");
 			lua_remove(L, -2);
 			lua_pushstring(L, name);
 			if (lua_pcall(L, 1, 0, handler) != LUA_OK)
@@ -175,7 +175,7 @@ namespace
 		}
 	}
 
-	void released(int key)
+	void keyrelease(int key)
 	{
 		const char* const name = glfwGetKeyName(key, 0);
 		if (name)
@@ -183,7 +183,7 @@ namespace
 			lua_pushcfunction(L, message_handler);
 			const int handler = lua_gettop(L);
 			lua_getglobal(L, "glerminal");
-			lua_getfield(L, -1, "released");
+			lua_getfield(L, -1, "keyrelease");
 			lua_remove(L, -2);
 			lua_pushstring(L, name);
 			if (lua_pcall(L, 1, 0, handler) != LUA_OK)
@@ -194,6 +194,97 @@ namespace
 			lua_remove(L, handler);
 		}
 	}
+
+	void mousemove(double x, double y)
+	{
+		lua_pushcfunction(L, message_handler);
+		const int handler = lua_gettop(L);
+		lua_getglobal(L, "glerminal");
+		lua_getfield(L, -1, "mousemove");
+		lua_remove(L, -2);
+		lua_pushnumber(L, x);
+		lua_pushnumber(L, y);
+		if (lua_pcall(L, 2, 0, handler) != LUA_OK)
+		{
+			std::cout << lua_tostring(L, -1) << std::endl;
+			lua_pop(L, 1);
+		}
+		lua_remove(L, handler);
+	}
+
+	void mousepress(int button, double x, double y)
+	{
+		const char* button_name = nullptr;
+		switch (button)
+		{
+			case GLFW_MOUSE_BUTTON_LEFT:
+				button_name = "left";
+			break;
+
+			case GLFW_MOUSE_BUTTON_RIGHT:
+				button_name = "right";
+			break;
+
+			case GLFW_MOUSE_BUTTON_MIDDLE:
+				button_name = "middle";
+			break;
+		}
+
+		if (button_name)
+		{
+			lua_pushcfunction(L, message_handler);
+			const int handler = lua_gettop(L);
+			lua_getglobal(L, "glerminal");
+			lua_getfield(L, -1, "mousepress");
+			lua_remove(L, -2);
+			lua_pushstring(L, button_name);
+			lua_pushnumber(L, x);
+			lua_pushnumber(L, y);
+			if (lua_pcall(L, 3, 0, handler) != LUA_OK)
+			{
+				std::cout << lua_tostring(L, -1) << std::endl;
+				lua_pop(L, 1);
+			}
+			lua_remove(L, handler);
+		}
+	}
+
+	void mouserelease(int button, double x, double y)
+	{
+		const char* button_name = nullptr;
+		switch (button)
+		{
+			case GLFW_MOUSE_BUTTON_LEFT:
+				button_name = "left";
+			break;
+
+			case GLFW_MOUSE_BUTTON_RIGHT:
+				button_name = "right";
+			break;
+
+			case GLFW_MOUSE_BUTTON_MIDDLE:
+				button_name = "middle";
+			break;
+		}
+
+		if (button_name)
+		{
+			lua_pushcfunction(L, message_handler);
+			const int handler = lua_gettop(L);
+			lua_getglobal(L, "glerminal");
+			lua_getfield(L, -1, "mouserelease");
+			lua_remove(L, -2);
+			lua_pushstring(L, button_name);
+			lua_pushnumber(L, x);
+			lua_pushnumber(L, y);
+			if (lua_pcall(L, 3, 0, handler) != LUA_OK)
+			{
+				std::cout << lua_tostring(L, -1) << std::endl;
+				lua_pop(L, 1);
+			}
+			lua_remove(L, handler);
+		}
+	}
 }
 
 int main(int argc, char** argv)
@@ -232,7 +323,15 @@ int main(int argc, char** argv)
 	}
 	else
 	{
-		glerminal_run(init, mainloop, pressed, released);
+		glerminal_init_params params;
+		params.init = init;
+		params.main = mainloop;
+		params.keypress = keypressed;
+		params.keyrelease = keyrelease;
+		params.moved = mousemove;
+		params.mousepress = mousepress;
+		params.mouserelease = mouserelease;
+		glerminal_run(params);
 	}
 
 	lua_close(L);

source/glerminal-private.h

@@ -27,7 +27,7 @@ namespace glerminal
 	class glerminal
 	{
 	public:
-		glerminal(glerminal_init_cb init, glerminal_main_cb main, glerminal_keys_cb pressed, glerminal_keys_cb released);
+		explicit glerminal(glerminal_init_params params);
 		~glerminal();
 
 		glerminal(const glerminal&) = delete;
@@ -83,7 +83,9 @@ namespace glerminal
 
 		unsigned int m_sprites[(CELL_SIZE + 2) * (CELL_SIZE + 2) * MAX_SPRITES];
 		glerminal_main_cb m_main;
-		glerminal_keys_cb m_pressed, m_released;
+		glerminal_keys_cb m_keypressed, m_keyreleased;
+		glerminal_mousemoved_cb m_mousemoved;
+		glerminal_mousepress_cb m_mousepressed, m_mousereleased;
 
 #ifdef GLERMINAL_OPENGL_DEBUG_CONTEXT
 		mutable std::ofstream m_log;
@@ -101,6 +103,8 @@ namespace glerminal
 		void update_scales();
 
 		static void glfw_key_handler(GLFWwindow* window, int key, int scancode, int action, int mods);
+		static void glfw_mousemoved_handler(GLFWwindow* window, double x, double y);
+		static void glfw_mousepress_handler(GLFWwindow* window, int button, int action, int mods);
 	};
 }
 

source/glerminal.cpp

@@ -189,10 +189,13 @@ namespace
 
 namespace glerminal
 {
-	glerminal::glerminal(glerminal_init_cb init, glerminal_main_cb main, glerminal_keys_cb pressed, glerminal_keys_cb released) :
+	glerminal::glerminal(glerminal_init_params params) :
-		m_main(main),
+		m_main(params.main),
-		m_pressed(pressed),
+		m_keypressed(params.keypress),
-		m_released(released),
+		m_keyreleased(params.keyrelease),
+		m_mousemoved(params.moved),
+		m_mousepressed(params.mousepress),
+		m_mousereleased(params.mouserelease),
 		m_cells{ },
 		m_offsets{ },
 		m_sprites{ },
@@ -208,7 +211,7 @@ namespace glerminal
 		}
 
 		// unsure if this should be an error
-		if (!init)
+		if (!params.init)
 		{
 			throw std::runtime_error("No init callback provided.");
 		}
@@ -229,7 +232,7 @@ namespace glerminal
 
 		GLERMINAL_G = this;
 
-		init();
+		params.init();
 	}
 
 	glerminal::~glerminal()
@@ -242,12 +245,12 @@ namespace glerminal
 
 	void glerminal::run()
 	{
-		float last = glfwGetTime();
+		double last = glfwGetTime();
 		while (!glfwWindowShouldClose(m_window))
 		{
 			glfwPollEvents();
 
-			const float current = glfwGetTime();
+			const double current = glfwGetTime();
 
 			m_main(current - last);
 
@@ -382,7 +385,9 @@ namespace glerminal
 		}
 
 		glfwSetWindowUserPointer(m_window, this);
-		glfwSetKeyCallback(m_window, glerminal::glfw_key_handler);
+		glfwSetKeyCallback(m_window, glfw_key_handler);
+		glfwSetCursorPosCallback(m_window, glfw_mousemoved_handler);
+		glfwSetMouseButtonCallback(m_window, glfw_mousepress_handler);
 	}
 	
 	void glerminal::log(GLenum type, GLuint id, GLenum severity, const char* message) const
@@ -780,23 +785,49 @@ namespace glerminal
 	{
 		glerminal* const self = static_cast<glerminal*>(glfwGetWindowUserPointer(window));
 
-		if (self->m_pressed && action == GLFW_PRESS)
+		if (self->m_keypressed && action == GLFW_PRESS)
 		{
-			self->m_pressed(key);
+			self->m_keypressed(key);
 		}
 
-		if (self->m_released && action == GLFW_RELEASE)
+		if (self->m_keyreleased && action == GLFW_RELEASE)
 		{
-			self->m_released(key);
+			self->m_keyreleased(key);
 		}
 	}
+
+	void glerminal::glfw_mousemoved_handler(GLFWwindow *window, double x, double y)
+	{
+		glerminal* const self = static_cast<glerminal*>(glfwGetWindowUserPointer(window));
+
+		if (self->m_mousemoved) { self->m_mousemoved(x / CELL_SIZE, y / CELL_SIZE); }
+	}
+
+	void glerminal::glfw_mousepress_handler(GLFWwindow *window, int button, int action, int mods)
+	{
+		glerminal* const self = static_cast<glerminal*>(glfwGetWindowUserPointer(window));
+
+		double x, y;
+		glfwGetCursorPos(window, &x, &y);
+
+		if (self->m_mousepressed && action == GLFW_PRESS)
+		{
+			self->m_mousepressed(button, x / CELL_SIZE, y / CELL_SIZE);
+		}
+
+		if (self->m_mousereleased && action == GLFW_RELEASE)
+		{
+			self->m_mousereleased(button, x / CELL_SIZE, y / CELL_SIZE);
+		}
+	}
+
 }
 
-void glerminal_run(glerminal_init_cb init, glerminal_main_cb main, glerminal_keys_cb pressed, glerminal_keys_cb released)
+void glerminal_run(glerminal_init_params params)
 {
 	try
 	{
-		glerminal::glerminal* g = new glerminal::glerminal(init, main, pressed, released);
+		glerminal::glerminal* g = new glerminal::glerminal(params);
 		g->run();
 		delete g;
 	}