Update known working version

.gitea/workflows/make_png.yaml

@@ -5,7 +5,7 @@ on: push
 
 jobs:
   build-app:
-    runs-on: linux_amd64
+    runs-on: shy-server
     steps:
       - name: Checkout current
         uses: actions/checkout@v4
@@ -20,7 +20,7 @@ jobs:
           fetch-depth: 0
           submodules: recursive
           lfs: true
-      - run: cd prev && git checkout 10a90a5f6a
+      - run: cd prev && git checkout 263cf68ca2
       - name: Build current
         run: cmake -S curr -B curr/build -DGLERMINAL_TEST=ON && cmake --build curr/build
       - name: Build previous

.gitignore

@@ -1 +1,4 @@
 build/
+cmake-build-*/
+.idea/
+.cache/

.gitmodules

@@ -1,6 +1,3 @@
 [submodule "glfw"]
 	path = glfw
-	url = https://git.shylie.info/shylie/glfw.git
-[submodule "Lua"]
-	path = Lua
-	url = https://git.shylie.info/shylie/Lua.git
+	url = https://github.com/glfw/glfw.git

CMakeLists.txt

@@ -1,8 +1,8 @@
 cmake_minimum_required(VERSION 3.28)
 
 project(glerminal
-	VERSION 0.1.0
-	LANGUAGES C CXX
+  VERSION 0.1.0
+  LANGUAGES C CXX
 )
 
 option(GLERMINAL_OPENGL_DEBUG_CONTEXT "" OFF)
@@ -11,72 +11,58 @@ set(GLERMINAL_GRID_WIDTH 40 CACHE STRING "")
 set(GLERMINAL_GRID_HEIGHT 25 CACHE STRING "")
 set(GLERMINAL_LAYER_COUNT 64 CACHE STRING "")
 set(GLERMINAL_CELL_SCALE 4 CACHE STRING "")
+set(GLERMINAL_CELL_SIZE 8 CACHE STRING "")
 
 configure_file(source/glerminal-config.h.in glerminal-config.h @ONLY)
 
 add_subdirectory(glfw)
-add_subdirectory(Lua)
 
-add_library(glerminallib STATIC
-	${CMAKE_CURRENT_BINARY_DIR}/glerminal-config.h
-	include/glerminal.h
+add_library(glerminal STATIC
+  ${CMAKE_CURRENT_BINARY_DIR}/glerminal-config.h
+  include/glerminal.h
 
-	source/stb_image.h
-	source/glerminal-private.h
-	source/glerminal.cpp
+  source/stb_image.h
+  source/glerminal-private.h
+  source/glerminal.cpp
 
-	source/glad/glad.h
-	source/KHR/khrplatform.h
-	source/glad.c
+  source/glad/glad.h
+  source/KHR/khrplatform.h
+  source/glad.c
+
+  source/miniaudio.h
+  source/miniaudio.c
 )
 
-set_target_properties(glerminallib
-	PROPERTIES
-		CXX_STANDARD 11
+set_target_properties(glerminal
+  PROPERTIES
+    CXX_STANDARD 11
 )
 
-target_include_directories(glerminallib
-	PUBLIC
-		include
-		${CMAKE_CURRENT_BINARY_DIR}
-	PRIVATE
-		source
-)
-
-target_link_libraries(glerminallib
-	PUBLIC
-		glfw
-)
-
-target_compile_definitions(glerminallib
-	PUBLIC
-		GLERMINAL_VERSION=${PROJECT_VERSION}
-		GLERMINAL_VERSION_MAJOR=${PROJECT_VERSION_MAJOR}
-		GLERMINAL_VERSION_MINOR=${PROJECT_VERSION_MINOR}
-		GLERMINAL_VERSION_PATCH=${PROJECT_VERSION_PATCH}
-)
-
-if (MSVC)
-	target_link_options(glerminallib
-		PUBLIC
-			"/ENTRY:mainCRTStartup"
-	)
-endif()
-
-add_executable(glerminal WIN32
-	source/glerminal-main.cpp
+target_include_directories(glerminal
+  PUBLIC
+    include
+    ${CMAKE_CURRENT_BINARY_DIR}
+  PRIVATE
+    source
 )
 
 target_link_libraries(glerminal
-	PRIVATE
-		glerminallib
-		lua_static
+  PUBLIC
+    glfw
 )
 
-if (PROJECT_IS_TOP_LEVEL)
-	add_subdirectory(examples examples)
+target_compile_definitions(glerminal
+  PUBLIC
+    GLERMINAL_VERSION=${PROJECT_VERSION}
+    GLERMINAL_VERSION_MAJOR=${PROJECT_VERSION_MAJOR}
+    GLERMINAL_VERSION_MINOR=${PROJECT_VERSION_MINOR}
+    GLERMINAL_VERSION_PATCH=${PROJECT_VERSION_PATCH}
+)
+
+if(PROJECT_IS_TOP_LEVEL)
+  add_subdirectory(examples examples)
 endif()
 
-if (GLERMINAL_TEST)
-	add_subdirectory(tests tests)
+if(GLERMINAL_TEST)
+  add_subdirectory(tests tests)
 endif()

PROJECT_RETROSPECTIVE.md

@@ -0,0 +1,37 @@
+# A look back on what I learned
+
+## why?
+
+I came across an art/rendering style called "sprite stacking".
+I found sprite stacking very interesting in comparison to traditional methods,
+and wanted to experiment with the style.
+
+## challenge
+
+This was my first big graphics-based project. Computer graphics
+at the low-level was new to me. I took this as an opportunity to
+learn the basics of OpenGL. This learning process was the most
+difficult part of the project, especially the domain-specific
+rendering techniques used.
+
+## how?
+
+I found some [great tutorials](https://learnopengl.com) to get started,
+and though these helped, I also did a lot of individual
+learning through experimentation and discussion with peers.
+
+## results
+
+In the end, the library had most of the functionality
+I originally wanted. The library can draw up to 256 layers of icons in a grid,
+with optional offsets and tints per icon. Here's an example with only 7 library calls:
+
+![example gif](./example.gif)
+
+## evaluation
+
+Besides learning the basics of OpenGL, I also learned
+how to use CMake to help build the library. Also, I set up
+continuous integration for automated testing on a git commit.
+If I were to rewrite this library, I would definitely invest more
+into the automated testing process.

README.md

@@ -1,2 +1,4 @@
-# termg
+# glerminal
 
+glerminal is a tile-based graphics library created
+with the intent to use a sprite-stacking art style.

examples/CMakeLists.txt

@@ -36,5 +36,5 @@ list(TRANSFORM EXAMPLE_RESOURCES PREPEND ${CMAKE_CURRENT_BINARY_DIR}/)
 foreach(SOURCE_FILE ${EXAMPLE_SOURCES})
 	get_filename_component(SOURCE_FILENAME ${SOURCE_FILE} NAME_WLE)
 	add_executable(${SOURCE_FILENAME} WIN32 ${SOURCE_FILE} ${EXAMPLE_RESOURCES})
-	target_link_libraries(${SOURCE_FILENAME} PRIVATE glerminallib)
+	target_link_libraries(${SOURCE_FILENAME} PRIVATE glerminal)
 endforeach()

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;
 
@@ -30,8 +30,8 @@ namespace
 			{
 				for (int k = 0; k < LAYER_COUNT; k++)
 				{
-					glerminal_set(i, j, k, rand() % 4);
-					glerminal_offset(i, j, k, (rand() * rand()) % 64 - 32, (rand() * rand()) % 64 - 32);
+					glerminal_set(i + 1, j + 1, k, rand() % 4);
+					glerminal_offset(i + 1, j + 1, k, (rand() * rand()) % 64 - 32, (rand() * rand()) % 64 - 32);
 				}
 			}
 		}
@@ -42,5 +42,5 @@ namespace
 
 int main(int argc, char** argv)
 {
-	glerminal_run(init, mainloop, nullptr, nullptr);
+	glerminal_run({init, mainloop});
 }

examples/basic.cpp

@@ -9,25 +9,25 @@ namespace
 	{
 		glerminal_load_sprites_file("resources/basic.png");
 
-		for (int i = 0; i < GRID_WIDTH; i++)
+		for (int i = 0; i < GRID_WIDTH + 2; i++)
 		{
-			for (int j = 0; j < GRID_HEIGHT; j++)
+			for (int j = 0; j < GRID_HEIGHT + 2; j++)
 			{
 				glerminal_set(i, j, 0, 1);
 			}
 		}
 	}
 
-	void mainloop(float dt)
+	void mainloop(double dt)
 	{
-		static float time = 0;
+		static double time = 0;
 
 		time += dt;
 		time = fmodf(time, 3.1415926f * 2);
 
-		for (int i = 0; i < GRID_WIDTH; i++)
+		for (int i = 0; i < GRID_WIDTH + 2; i++)
 		{
-			for (int j = 0; j < GRID_HEIGHT; j++)
+			for (int j = 0; j < GRID_HEIGHT + 2; j++)
 			{
 				glerminal_offset(i, j, 0, cosf(time - i / 3.1415f), sinf(time - j / 3.1415f));
 			}
@@ -39,5 +39,5 @@ namespace
 
 int main(int argc, char** argv)
 {
-	glerminal_run(init, mainloop, nullptr, nullptr);
+	glerminal_run({init, mainloop});
 }

examples/rogue.cpp

@@ -18,16 +18,16 @@ namespace
 	{
 		glerminal_load_sprites_file("resources/rogue.png");
 
-		for (int i = 0; i < GRID_WIDTH; i++)
+		for (int i = 0; i < GRID_WIDTH + 2; i++)
 		{
-			for (int j = 0; j < GRID_HEIGHT; j++)
+			for (int j = 0; j < GRID_HEIGHT + 2; j++)
 			{
 				for (int k = 0; k < WALL_LAYERS; k++)
 				{
 					const unsigned char v = (k + 1) * (256 / WALL_LAYERS) - 1;
 					const unsigned int c = (0xFF << 24) | (v << 16) | (v << 8) | v;
 
-					if (i == 0 || j == 0 || i == GRID_WIDTH - 1 || j == GRID_HEIGHT - 1)
+					if (i == 1 || j == 1 || i == GRID_WIDTH || j == GRID_HEIGHT)
 					{
 						glerminal_set(i, j, k, floor);
 					}
@@ -43,17 +43,17 @@ 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;
-		const float cy = GRID_HEIGHT / 2.0f * sinf(time / 2) + GRID_HEIGHT / 2.0f;
+		const float cx = GRID_WIDTH / 2.0f * cosf(time / 2) + GRID_WIDTH / 2.0f + 0.5f;
+		const float cy = GRID_HEIGHT / 2.0f * sinf(time / 2) + GRID_HEIGHT / 2.0f + 0.5f;
 
-		for (int i = 0; i < GRID_WIDTH; i++)
+		for (int i = 0; i < GRID_WIDTH + 2; i++)
 		{
-			for (int j = 0; j < GRID_HEIGHT; j++)
+			for (int j = 0; j < GRID_HEIGHT + 2; j++)
 			{
 				for (int k = 0; k < WALL_LAYERS; k++)
 				{
@@ -80,5 +80,5 @@ namespace
 
 int main(int argc, char** argv)
 {
-	glerminal_run(init, mainloop, nullptr, nullptr);
+	glerminal_run({init, mainloop});
 }

examples/towers.cpp

@@ -12,9 +12,9 @@ namespace
 		glerminal_load_sprites_file("resources/towers.png");
 
 
-		for (int i = 0; i < GRID_WIDTH; i++)
+		for (int i = 0; i < GRID_WIDTH + 2; i++)
 		{
-			for (int j = 0; j < GRID_HEIGHT; j++)
+			for (int j = 0; j < GRID_HEIGHT + 2; j++)
 			{
 				const int c = rand() % (LAYER_COUNT * 3 / 4) + LAYER_COUNT / 4;
 				for (int k = 0; k < c; k++)
@@ -34,18 +34,18 @@ 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 / 3.1415f) + (GRID_WIDTH / 2.0f);
-		const float cy = (GRID_HEIGHT / 2.0f) * sinf(time / 3.1415f) + (GRID_HEIGHT / 2.0f);
+		const float cx = (GRID_WIDTH / 2.0f) * cosf(time / 3.1415f) + (GRID_WIDTH / 2.0f) + 0.5f;
+		const float cy = (GRID_HEIGHT / 2.0f) * sinf(time / 3.1415f) + (GRID_HEIGHT / 2.0f) + 0.5f;
 
-		for (int i = 0; i < GRID_WIDTH; i++)
+		for (int i = 0; i < GRID_WIDTH + 2; i++)
 		{
-			for (int j = 0; j < GRID_WIDTH; j++)
+			for (int j = 0; j < GRID_WIDTH + 2; j++)
 			{
 				for (int k = 0; k < LAYER_COUNT; k++)
 				{
@@ -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 main main calllback
- * @param pressed key pressed callback (can be null)
- * @param released key released callback (can be null)
+ * @param params Initialization parameters
  */
-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();
 
@@ -30,42 +37,46 @@ void glerminal_flush();
 
 /**
  * @brief Set a cell's sprite
- * @param x position of the cell in the range [0, 40)
- * @param y position of the cell in the range [0, 25)
- * @param layer layer of the cell in the range [0, 8)
- * @param sprite sprite's index in the range [0, 256)
+ * @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 sprite sprite's index in the range [0, 4096)
  */
-void glerminal_set(unsigned char x, unsigned char y, unsigned char layer, unsigned short sprite);
+void glerminal_set(int x, int y, int layer, unsigned short sprite);
 /**
  * @brief Get a cell's sprite
- * @param x position of the cell in the range [0, 40)
- * @param y position of the cell in the range [0, 25)
- * @param layer layer of the cell in the range [0, 8)
+ * @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)
  * @return sprite index currently assigned to the cell
  */
-unsigned char glerminal_get(unsigned char x, unsigned char y, unsigned short layer);
+unsigned short glerminal_get(int x, int y, int layer);
 /**
  * @brief Set a cell's offset
- * @param x position of the cell in the range [0, 40)
- * @param y position of the cell in the range [0, 25)
- * @param layer layer of the cell in the range [0, 8)
- * @param x_offset offset of the cell on the x axis in the range [-128, 127], where 0 is no offset
- * @param y_offset offset of the cell on the y axis in the range [-128, 127], where 0 is no offset
+ * @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 x_offset offset of the cell on the x axis in cells
+ * @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);
+void glerminal_offset(int x, int y, int layer, float x_offset, float y_offset);
 
 /**
- * @brief Set a layer's color
- * @param layer The layer to modify
+ * @brief Set a cell's color
+ * @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);
+void glerminal_color(int x, int y, int layer, unsigned int color);
 /**
- * @brief Set a layer's scale
- * @param layer The layer to modify
+ * @brief Set a cell's scale
+ * @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);
+void glerminal_scale(int x, int y, int layer, float scale);
 
 /**
  * @brief Load sprites from a png file
@@ -81,6 +92,8 @@ int glerminal_load_sprites_file(const char* filename);
  */
 int glerminal_load_sprites_buffer(unsigned char width, unsigned char height, const unsigned int* buffer);
 
+void glerminal_sound(const char* name);
+
 #ifdef __cplusplus
 }
 #endif

lua-examples/basic/main.lua

@@ -1,29 +0,0 @@
-local time = 0
-
-function glerminal.init()
-    if not glerminal.sprites('sprites.png') then
-        print('failed to load sprites')
-    end
-
-    for i = 1, 40 do
-        for j = 1, 25 do
-            glerminal.set(i, j, 1, 2)
-        end
-    end
-
-    glerminal.tint(1, 0xA0FFFFFF)
-
-    glerminal.flush()
-end
-
-function glerminal.main(dt)
-    time = time + dt / 2
-
-    for i = 1, 40 do
-        for j = 1, 25 do
-            glerminal.offset(i, j, 1, math.cos(time * i / math.pi), math.sin(time * j / math.pi))
-        end
-    end
-
-    glerminal.flush()
-end

lua-examples/basic/sprites.png

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:6dee3efcdfa72e54a602f69643907bb8e8a3328d2b40c2116dce22ff179d8892
-size 182

source/glerminal-config.h.in

@@ -16,7 +16,8 @@ enum
 	GRID_WIDTH = @GLERMINAL_GRID_WIDTH@,
 	GRID_HEIGHT = @GLERMINAL_GRID_HEIGHT@,
 	LAYER_COUNT = @GLERMINAL_LAYER_COUNT@,
-	CELL_SCALE = @GLERMINAL_CELL_SCALE@
+	CELL_SCALE = @GLERMINAL_CELL_SCALE@,
+	CELL_SIZE = @GLERMINAL_CELL_SIZE@
 };
 
 #ifdef __cplusplus

source/glerminal-main.cpp

@@ -1,241 +0,0 @@
-#include <glerminal.h>
-#define GLFW_INCLUDE_NONE
-#include <GLFW/glfw3.h>
-
-extern "C"
-{
-#include <lualib.h>
-#include <lauxlib.h>
-}
-
-#include <iostream>
-#include <string>
-
-#ifdef _WIN32
-#define WINDOWS_LEAN_AND_MEAN
-#include <Windows.h>
-#define CHANGE_WORKING_DIRECTORY(path) !(SetCurrentDirectory(path))
-#else
-#include <unistd.h>
-#define CHANGE_WORKING_DIRECTORY(path) chdir(path)
-#endif
-
-namespace
-{
-	int lglerminal_quit(lua_State* L)
-	{
-		glerminal_quit();
-
-		return 0;
-	}
-
-	int lglerminal_flush(lua_State* L)
-	{
-		glerminal_flush();
-
-		return 0;
-	}
-
-	int lglerminal_set(lua_State* L)
-	{
-		const unsigned char x = luaL_checkinteger(L, 1) - 1;
-		const unsigned char y = luaL_checkinteger(L, 2) - 1;
-		const unsigned char layer = luaL_checkinteger(L, 3) - 1;
-		const unsigned short sprite = luaL_checkinteger(L, 4) - 1;
-		glerminal_set(x, y, layer, sprite);
-
-		return 0;
-	}
-
-	int lglerminal_get(lua_State* L)
-	{
-		const unsigned char x = luaL_checkinteger(L, 1) - 1;
-		const unsigned char y = luaL_checkinteger(L, 2) - 1;
-		const unsigned char layer = luaL_checkinteger(L, 3) - 1;
-		lua_pushnumber(L, glerminal_get(x, y, layer) + 1);
-
-		return 1;
-	}
-
-	int lglerminal_offset(lua_State* L)
-	{
-		const unsigned char x = luaL_checkinteger(L, 1) - 1;
-		const unsigned char y = luaL_checkinteger(L, 2) - 1;
-		const unsigned char layer = luaL_checkinteger(L, 3) - 1;
-		const float ox = luaL_checknumber(L, 4);
-		const float oy = luaL_checknumber(L, 5);
-		glerminal_offset(x, y, layer, ox, oy);
-
-		return 0;
-	}
-
-	int lglerminal_layer_color(lua_State* L)
-	{
-		const unsigned char x = luaL_checkinteger(L, 1) - 1;
-		const unsigned char y = luaL_checkinteger(L, 2) - 1;
-		const unsigned char layer = luaL_checkinteger(L, 3) - 1;
-		const unsigned int color = luaL_checkinteger(L, 4);
-		glerminal_color(x, y, layer, color);
-
-		return 0;
-	}
-
-	int lglerminal_layer_scale(lua_State* L)
-	{
-		const unsigned char x = luaL_checkinteger(L, 1) - 1;
-		const unsigned char y = luaL_checkinteger(L, 2) - 1;
-		const unsigned char layer = luaL_checkinteger(L, 3) - 1;
-		const float scale = luaL_checknumber(L, 4);
-		glerminal_scale(x, y, layer, scale);
-
-		return 0;
-	}
-
-	int lglerminal_load_sprites_file(lua_State* L)
-	{
-		const char* path = luaL_checkstring(L, 1);
-		lua_pushboolean(L, glerminal_load_sprites_file(path));
-
-		return 1;
-	}
-
-	const luaL_Reg lglerminal_methods[] =
-	{
-		{ "quit",    lglerminal_quit },
-		{ "flush",   lglerminal_flush },
-		{ "set",     lglerminal_set },
-		{ "get",     lglerminal_get },
-		{ "offset",  lglerminal_offset },
-		{ "tint",    lglerminal_layer_color },
-		{ "scale",   lglerminal_layer_scale },
-		{ "sprites", lglerminal_load_sprites_file },
-		{ nullptr,   nullptr }
-	};
-
-	int message_handler(lua_State* L)
-	{
-		luaL_traceback(L, L, lua_tostring(L, -1), 1);
-		lua_remove(L, -2);
-
-		glerminal_quit();
-
-		return true;
-	}
-
-	lua_State* L;
-
-	void init()
-	{
-		lua_pushcfunction(L, message_handler);
-		const int handler = lua_gettop(L);
-		lua_getglobal(L, "glerminal");
-		lua_getfield(L, -1, "init");
-		lua_remove(L, -2);
-		if (lua_pcall(L, 0, 0, handler) != LUA_OK)
-		{
-			std::cout << lua_tostring(L, -1) << std::endl;
-			lua_pop(L, 1);
-		}
-		lua_remove(L, handler);
-	}
-
-	void mainloop(float dt)
-	{
-		lua_pushcfunction(L, message_handler);
-		const int handler = lua_gettop(L);
-		lua_getglobal(L, "glerminal");
-		lua_getfield(L, -1, "main");
-		lua_remove(L, -2);
-		lua_pushnumber(L, dt);
-		if (lua_pcall(L, 1, 0, handler) != LUA_OK)
-		{
-			std::cout << lua_tostring(L, -1) << std::endl;
-			lua_pop(L, 1);
-		}
-		lua_remove(L, handler);
-	}
-
-	void pressed(int key)
-	{
-		const char* const name = glfwGetKeyName(key, 0);
-		if (name)
-		{
-			lua_pushcfunction(L, message_handler);
-			const int handler = lua_gettop(L);
-			lua_getglobal(L, "glerminal");
-			lua_getfield(L, -1, "pressed");
-			lua_remove(L, -2);
-			lua_pushstring(L, name);
-			if (lua_pcall(L, 1, 0, handler) != LUA_OK)
-			{
-				std::cout << lua_tostring(L, -1) << std::endl;
-				lua_pop(L, 1);
-			}
-			lua_remove(L, handler);
-		}
-	}
-
-	void released(int key)
-	{
-		const char* const name = glfwGetKeyName(key, 0);
-		if (name)
-		{
-			lua_pushcfunction(L, message_handler);
-			const int handler = lua_gettop(L);
-			lua_getglobal(L, "glerminal");
-			lua_getfield(L, -1, "released");
-			lua_remove(L, -2);
-			lua_pushstring(L, name);
-			if (lua_pcall(L, 1, 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)
-{
-	if (argc == 1)
-	{
-		std::cout << "Usage: " << argv[0] << " <project directory>" << std::endl;
-		return 0;
-	}
-
-	if (CHANGE_WORKING_DIRECTORY(argv[1]))
-	{
-		std::cout << "Failed to find project directory" << std::endl;
-		return 1;
-	}
-
-	L = luaL_newstate();
-	luaL_openlibs(L);
-
-	luaL_newlib(L, lglerminal_methods);
-	lua_setglobal(L, "glerminal");
-
-	lua_pushcfunction(L, message_handler);
-	const int handler = lua_gettop(L);
-	if (luaL_loadfile(L, "main.lua") != LUA_OK)
-	{
-		const char* str = lua_tostring(L, -1);
-		std::cout << str << std::endl;
-		lua_pop(L, 1);
-	}
-	else if (lua_pcall(L, 0, LUA_MULTRET, handler) != LUA_OK)
-	{
-		const char* str = lua_tostring(L, -1);
-		std::cout << str << std::endl;
-		lua_pop(L, 1);
-	}
-	else
-	{
-		glerminal_run(init, mainloop, pressed, released);
-	}
-
-	lua_close(L);
-
-	return 0;
-}

source/glerminal-private.h

@@ -2,32 +2,36 @@
 #define GLERMINAL_PRIVATE_H
 
 #include "glerminal.h"
+#include "miniaudio.h"
 
 #include <stb_image.h>
 #include <glad/glad.h>
 #include <GLFW/glfw3.h>
 
 #include <iostream>
-#include <fstream>
-#include <stdexcept>
+#include <map>
+#include <string>
 
 namespace glerminal
 {
-	constexpr unsigned int CELL_SIZE = 8;
 	constexpr unsigned int MAX_SPRITES_ROW = 64;
 	constexpr unsigned int MAX_SPRITES = MAX_SPRITES_ROW * MAX_SPRITES_ROW;
 	constexpr unsigned int GRID_WIDTH = ::GRID_WIDTH;
 	constexpr unsigned int GRID_HEIGHT = ::GRID_HEIGHT;
 	constexpr unsigned int LAYER_COUNT = ::LAYER_COUNT;
 	constexpr unsigned int CELL_SCALE = ::CELL_SCALE;
+	constexpr unsigned int CELL_SIZE = ::CELL_SIZE;
 	constexpr unsigned int GRID_AREA = GRID_WIDTH * GRID_HEIGHT;
 	constexpr unsigned int SCREEN_WIDTH = GRID_WIDTH * CELL_SIZE * CELL_SCALE;
 	constexpr unsigned int SCREEN_HEIGHT = GRID_HEIGHT * CELL_SIZE * CELL_SCALE;
+	constexpr unsigned int SOUND_CHANNELS = 8;
+
+	constexpr unsigned int GRID_AREA_2 = (GRID_WIDTH + 2) * (GRID_HEIGHT + 2);
 
 	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;
@@ -41,12 +45,14 @@ namespace glerminal
 
 		void flush();
 
-		void set(unsigned char x, unsigned char y, unsigned char layer, unsigned short sprite);
-		unsigned short get(unsigned char x, unsigned char y, unsigned char layer) const;
-		void offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset);
-		void color(unsigned char x, unsigned char y, unsigned char layer, unsigned int color);
-		void scale(unsigned char x, unsigned char y, unsigned char layer, float scale);
+		void set(int x, int y, int layer, unsigned short sprite);
+		unsigned short get(int x, int y, int layer) const;
+		void offset(int x, int y, int layer, float x_offset, float y_offset);
+		void color(int x, int y, int layer, unsigned int color);
+		void scale(int x,int y, int layer, float scale);
 		void load_atlas(unsigned char w, unsigned char h, const unsigned int* data);
+		bool load_sound(const char* name);
+		void play_sound(const char* name);
 
 	private:
 		// glfw data
@@ -69,21 +75,24 @@ namespace glerminal
 		unsigned int m_screen_framebuffer_backing_texture;
 		unsigned int m_colors_instance_vbo;
 		unsigned int m_scales_instance_vbo;
-		unsigned int m_screen_size_uniform_location;
-		unsigned int m_palette_uniform_location;
 
 		// per-cell data
 
-		unsigned short m_cells[GRID_AREA * LAYER_COUNT];
-		float m_offsets[GRID_AREA * LAYER_COUNT * 2];
-		unsigned char m_colors[GRID_AREA * LAYER_COUNT * 4];
-		float m_scales[GRID_AREA * LAYER_COUNT];
+		unsigned short m_cells[GRID_AREA_2 * LAYER_COUNT];
+		float m_offsets[GRID_AREA_2 * LAYER_COUNT * 2];
+		unsigned char m_colors[GRID_AREA_2 * LAYER_COUNT * 4];
+		float m_scales[GRID_AREA_2 * LAYER_COUNT];
 
 		// library state
 
 		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;
+
+		ma_engine m_audio_engine;
+		std::map<std::string, ma_sound> m_sounds;
 
 #ifdef GLERMINAL_OPENGL_DEBUG_CONTEXT
 		mutable std::ofstream m_log;
@@ -93,14 +102,20 @@ namespace glerminal
 		void init_glfw();
 		void init_gl();
 
+		void init_audio();
+
 		void deinit_glfw();
 		void deinit_gl();
 
+		void deinit_audio();
+
 		void update_sprites();
 		void update_colors();
 		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

@@ -1,6 +1,6 @@
 #define STB_IMAGE_IMPLEMENTATION
 #define STBI_ONLY_PNG
-#define STBI_MAX_DIMENSIONS 512
+#define STBI_MAX_DIMENSIONS 2048
 #include "glerminal-private.h"
 
 #define GRID_SIZE_UNIFORM_NAME "grid_size"
@@ -8,6 +8,7 @@
 #define LAYERS_UNIFORM_NAME "layers"
 #define LAYER_COUNT_UNIFORM_NAME "layer_count"
 #define ATLAS_WIDTH_UNIFORM_NAME "atlas_width"
+#define CELL_SIZE_UNIFORM_NAME "cell_size"
 
 namespace
 {
@@ -33,6 +34,7 @@ namespace
 		"layout (location = 2) in int sprite;\n"
 		"layout (location = 3) in vec4 color;\n"
 		"layout (location = 4) in float scale;\n"
+		"uniform float " CELL_SIZE_UNIFORM_NAME ";\n"
 		"uniform vec4 " GRID_SIZE_UNIFORM_NAME ";\n"
 		"uniform int " ATLAS_WIDTH_UNIFORM_NAME ";\n"
 		"out VS_OUT {\n"
@@ -48,9 +50,9 @@ namespace
 		"	vs_out.sprite = sprite;\n"
 		"	vs_out.layer = layer;\n"
 		"	vs_out.layer_color = color;\n"
-		"	vs_out.texcoord = vec2(sprite % " ATLAS_WIDTH_UNIFORM_NAME " + position.x + 1, (sprite / " ATLAS_WIDTH_UNIFORM_NAME ") - position.y) / vec2(" ATLAS_WIDTH_UNIFORM_NAME ") + vec2(-(2 * position.x + 1) * " GRID_SIZE_UNIFORM_NAME ".z / 16, (2 * position.y + 1) * " GRID_SIZE_UNIFORM_NAME ".z / 16);\n"
-		"	vec2 cell_position = vec2(scale + (gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) - " GRID_SIZE_UNIFORM_NAME ".x * floor((gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) * " GRID_SIZE_UNIFORM_NAME ".z), -floor((gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) * " GRID_SIZE_UNIFORM_NAME ".z));\n"
-		"	vec2 temp = ((position + vec2(-0.5, 0.5)) * scale + cell_position + vec2(0.5, -0.5)) * " GRID_SIZE_UNIFORM_NAME ".zw * 2 + vec2(-1, 1);\n"
+		"	vs_out.texcoord = vec2(sprite % " ATLAS_WIDTH_UNIFORM_NAME " + position.x + 1, (sprite / " ATLAS_WIDTH_UNIFORM_NAME ") - position.y) / vec2(" ATLAS_WIDTH_UNIFORM_NAME ") + vec2(-(2 * position.x + 1) * " GRID_SIZE_UNIFORM_NAME ".z / (2 * " CELL_SIZE_UNIFORM_NAME "), (2 * position.y + 1) * " GRID_SIZE_UNIFORM_NAME ".z / (2 * " CELL_SIZE_UNIFORM_NAME "));\n"
+		"	vec2 cell_position = vec2(scale + (gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) - " GRID_SIZE_UNIFORM_NAME ".x * floor((gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) / " GRID_SIZE_UNIFORM_NAME ".x), -floor((gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) / " GRID_SIZE_UNIFORM_NAME ".x));\n"
+		"	vec2 temp = ((position + vec2(-0.5, 0.5)) * scale + cell_position + vec2(-0.5, 0.5)) * " GRID_SIZE_UNIFORM_NAME ".zw * 2 + vec2(-1, 1);\n"
 		"	gl_Position = vec4(scaled_offset.x + temp.x, scaled_offset.y - temp.y, 0, 1);\n"
 		"}";
 
@@ -64,6 +66,7 @@ namespace
 		"layout (location = 2) in int sprite;\n"
 		"layout (location = 3) in vec4 color;\n"
 		"layout (location = 4) in float scale;\n"
+		"uniform float " CELL_SIZE_UNIFORM_NAME ";\n"
 		"uniform vec4 " GRID_SIZE_UNIFORM_NAME ";\n"
 		"uniform int " ATLAS_WIDTH_UNIFORM_NAME ";\n"
 		"out VS_OUT {\n"
@@ -77,10 +80,10 @@ namespace
 		"	gl_Layer = layer;\n"
 		"	vec2 scaled_offset = 2 * offset * " GRID_SIZE_UNIFORM_NAME ".zw;\n"
 		"	vs_out.sprite = sprite;\n"
-		"	vs_out.texcoord = vec2(sprite % " ATLAS_WIDTH_UNIFORM_NAME " + position.x + 1, (sprite / " ATLAS_WIDTH_UNIFORM_NAME ") - position.y) / vec2(" ATLAS_WIDTH_UNIFORM_NAME ") + vec2(-(2 * position.x + 1) * " GRID_SIZE_UNIFORM_NAME ".z / 16, (2 * position.y + 1) * " GRID_SIZE_UNIFORM_NAME ".z / 16);\n"
+		"	vs_out.texcoord = vec2(sprite % " ATLAS_WIDTH_UNIFORM_NAME " + position.x + 1, (sprite / " ATLAS_WIDTH_UNIFORM_NAME ") - position.y) / vec2(" ATLAS_WIDTH_UNIFORM_NAME ") + vec2(-(2 * position.x + 1) * " GRID_SIZE_UNIFORM_NAME ".z / (2 * " CELL_SIZE_UNIFORM_NAME "), (2 * position.y + 1) * " GRID_SIZE_UNIFORM_NAME ".z / (2 * " CELL_SIZE_UNIFORM_NAME "));\n"
 		"	vs_out.layer_color = color;\n"
-		"	vec2 cell_position = vec2(scale + (gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) - " GRID_SIZE_UNIFORM_NAME ".x * floor((gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) * " GRID_SIZE_UNIFORM_NAME ".z), -floor((gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) * " GRID_SIZE_UNIFORM_NAME ".z));\n"
-		"	vec2 temp = ((position + vec2(-0.5, 0.5)) * scale + cell_position + vec2(0.5, -0.5)) * " GRID_SIZE_UNIFORM_NAME ".zw * 2 + vec2(-1, 1);\n"
+		"	vec2 cell_position = vec2(scale + (gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) - " GRID_SIZE_UNIFORM_NAME ".x * floor((gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) / " GRID_SIZE_UNIFORM_NAME ".x), -floor((gl_InstanceID % int(" GRID_SIZE_UNIFORM_NAME ".y)) / " GRID_SIZE_UNIFORM_NAME ".x));\n"
+		"	vec2 temp = ((position + vec2(-0.5, 0.5)) * scale + cell_position + vec2(-0.5, 0.5)) * " GRID_SIZE_UNIFORM_NAME ".zw * 2 + vec2(-1, 1);\n"
 		"	gl_Position = vec4(scaled_offset.x + temp.x, scaled_offset.y - temp.y, 0, 1);\n"
 		"}";
 
@@ -189,10 +192,13 @@ namespace
 
 namespace glerminal
 {
-	glerminal::glerminal(glerminal_init_cb init, glerminal_main_cb main, glerminal_keys_cb pressed, glerminal_keys_cb released) :
-		m_main(main),
-		m_pressed(pressed),
-		m_released(released),
+	glerminal::glerminal(glerminal_init_params params) :
+		m_main(params.main),
+		m_keypressed(params.keypress),
+		m_keyreleased(params.keyrelease),
+		m_mousemoved(params.moved),
+		m_mousepressed(params.mousepress),
+		m_mousereleased(params.mouserelease),
 		m_cells{ },
 		m_offsets{ },
 		m_sprites{ },
@@ -208,7 +214,7 @@ namespace glerminal
 		}
 
 		// unsure if this should be an error
-		if (!init)
+		if (!params.init)
 		{
 			throw std::runtime_error("No init callback provided.");
 		}
@@ -218,7 +224,7 @@ namespace glerminal
 			throw std::runtime_error("No main callback provided.");
 		}
 
-		for (int i = 0; i < GRID_AREA * LAYER_COUNT; i++)
+		for (int i = 0; i < GRID_AREA_2 * LAYER_COUNT; i++)
 		{
 			m_colors[i * 4 + 0] = m_colors[i * 4 + 1] = m_colors[i * 4 + 2] = m_colors[i * 4 + 3] = 255;
 			m_scales[i] = 1;
@@ -226,14 +232,16 @@ namespace glerminal
 
 		init_glfw();
 		init_gl();
+		init_audio();
 
 		GLERMINAL_G = this;
 
-		init();
+		params.init();
 	}
 
 	glerminal::~glerminal()
 	{
+		deinit_audio();
 		deinit_gl();
 		deinit_glfw();
 
@@ -242,12 +250,12 @@ 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);
 
@@ -272,7 +280,7 @@ namespace glerminal
 		glBindFramebuffer(GL_FRAMEBUFFER, m_framebuffer);
 		glBindVertexArray(m_vao);
 		glClear(GL_COLOR_BUFFER_BIT);
-		glDrawArraysInstanced(GL_TRIANGLES, 0, 6, GRID_AREA * LAYER_COUNT);
+		glDrawArraysInstanced(GL_TRIANGLES, 0, 6, GRID_AREA_2 * LAYER_COUNT);
 
 		glUseProgram(m_screen_program);
 		glBindFramebuffer(GL_FRAMEBUFFER, m_screen_framebuffer);
@@ -280,28 +288,25 @@ namespace glerminal
 		glClear(GL_COLOR_BUFFER_BIT);
 		glDrawArrays(GL_TRIANGLES, 0, 6);
 
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+    glClear(GL_COLOR_BUFFER_BIT);
 		glBlitNamedFramebuffer(m_screen_framebuffer, 0, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, GL_COLOR_BUFFER_BIT, GL_NEAREST);
-
-		glfwSwapInterval(0);
-		glfwSwapBuffers(m_window);
-		glBlitNamedFramebuffer(m_screen_framebuffer, 0, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, GL_COLOR_BUFFER_BIT, GL_NEAREST);
-		glfwSwapInterval(1);
 		glfwSwapBuffers(m_window);
 	}
 
-	void glerminal::set(unsigned char x, unsigned char y, unsigned char layer, unsigned short sprite)
+	void glerminal::set(int x, int y, int layer, unsigned short sprite)
 	{
-		if (x < GRID_WIDTH && y < GRID_HEIGHT && layer < LAYER_COUNT)
+		if (x >= 0 && x < GRID_WIDTH + 2 && y >= 0 && y < GRID_HEIGHT + 2 && layer >= 0 && layer < LAYER_COUNT)
 		{
-			m_cells[x + y * GRID_WIDTH + layer * GRID_AREA] = sprite;
+			m_cells[x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2] = sprite;
 		}
 	}
 
-	unsigned short glerminal::get(unsigned char x, unsigned char y, unsigned char layer) const
+	unsigned short glerminal::get(int x, int y, int layer) const
 	{
-		if (x < GRID_WIDTH && y < GRID_HEIGHT && layer < LAYER_COUNT)
+		if (x >= 0 && x < GRID_WIDTH + 2 && y >= 0 && y < GRID_HEIGHT + 2 && layer >= 0 && layer < LAYER_COUNT)
 		{
-			return m_cells[x + y * GRID_WIDTH + layer * GRID_AREA];
+			return m_cells[x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2];
 		}
 		else
 		{
@@ -309,26 +314,32 @@ namespace glerminal
 		}
 	}
 
-	void glerminal::offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset)
+	void glerminal::offset(int x, int y, int layer, float x_offset, float y_offset)
 	{
-		if (x < GRID_WIDTH && y < GRID_HEIGHT && layer < LAYER_COUNT)
+		if (x >= 0 && x < GRID_WIDTH + 2 && y >= 0 && y < GRID_HEIGHT + 2 && layer >= 0 && layer < LAYER_COUNT)
 		{
-			m_offsets[2 * (x + y * GRID_WIDTH + layer * GRID_AREA) + 0] = x_offset;
-			m_offsets[2 * (x + y * GRID_WIDTH + layer * GRID_AREA) + 1] = y_offset;
+			m_offsets[2 * (x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2) + 0] = x_offset;
+			m_offsets[2 * (x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2) + 1] = y_offset;
 		}
 	}
 
-	void glerminal::color(unsigned char x, unsigned char y, unsigned char layer, unsigned int color)
+	void glerminal::color(int x, int y, int layer, unsigned int color)
 	{
-		m_colors[4 * (x + y * GRID_WIDTH + layer * GRID_AREA) + 0] = ((color >>  0) & 0xFF);
-		m_colors[4 * (x + y * GRID_WIDTH + layer * GRID_AREA) + 1] = ((color >>  8) & 0xFF);
-		m_colors[4 * (x + y * GRID_WIDTH + layer * GRID_AREA) + 2] = ((color >> 16) & 0xFF);
-		m_colors[4 * (x + y * GRID_WIDTH + layer * GRID_AREA) + 3] = ((color >> 24) & 0xFF);
+		if (x >= 0 && x < GRID_WIDTH + 2 && y >= 0 && y < GRID_HEIGHT + 2 && layer >= 0 && layer < LAYER_COUNT)
+		{
+			m_colors[4 * (x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2) + 0] = (color >>  0) & 0xFF;
+			m_colors[4 * (x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2) + 1] = (color >>  8) & 0xFF;
+			m_colors[4 * (x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2) + 2] = (color >> 16) & 0xFF;
+			m_colors[4 * (x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2) + 3] = (color >> 24) & 0xFF;
+		}
 	}
 
-	void glerminal::scale(unsigned char x, unsigned char y, unsigned char layer, float scale)
+	void glerminal::scale(int x, int y, int layer, float scale)
 	{
-		m_scales[x + y * GRID_WIDTH + layer * GRID_AREA] = scale;
+		if (x >= 0 && x < GRID_WIDTH + 2 && y >= 0 && y < GRID_HEIGHT + 2 && layer >= 0 && layer < LAYER_COUNT)
+		{
+			m_scales[x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2] = scale;
+		}
 	}
 
 	void glerminal::load_atlas(unsigned char w, unsigned char h, const unsigned int* data)
@@ -357,6 +368,39 @@ namespace glerminal
 		}
 	}
 
+	bool glerminal::load_sound(const char* name)
+	{
+		if (m_sounds.find(name) == m_sounds.end())
+		{
+			ma_sound& ref = m_sounds[name];
+			const ma_result result = ma_sound_init_from_file(
+				&m_audio_engine,
+				name,
+				MA_SOUND_FLAG_DECODE | MA_SOUND_FLAG_NO_SPATIALIZATION,
+				nullptr,
+				nullptr,
+				&ref
+			);
+
+			if (result != MA_SUCCESS)
+			{
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	void glerminal::play_sound(const char* name)
+	{
+		load_sound(name);
+		const ma_result result = ma_engine_play_sound(&m_audio_engine, name, nullptr);
+		if (result != MA_SUCCESS)
+		{
+
+		}
+	}
+
 	void glerminal::init_glfw()
 	{
 		glfwInit();
@@ -382,7 +426,9 @@ 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
@@ -610,10 +656,9 @@ namespace glerminal
 		}
 
 		// setup uniforms
-		m_screen_size_uniform_location = glGetUniformLocation(m_program, GRID_SIZE_UNIFORM_NAME);
-
 		glUseProgram(m_program);
-		glUniform4f(m_screen_size_uniform_location, GRID_WIDTH, GRID_AREA, 1.0f / GRID_WIDTH, 1.0f / GRID_HEIGHT);
+		glUniform1f(glGetUniformLocation(m_program, CELL_SIZE_UNIFORM_NAME), CELL_SIZE);
+		glUniform4f(glGetUniformLocation(m_program, GRID_SIZE_UNIFORM_NAME), GRID_WIDTH + 2, GRID_AREA_2, 1.0f / GRID_WIDTH, 1.0f / GRID_HEIGHT);
 		glUniform1i(glGetUniformLocation(m_program, ATLAS_WIDTH_UNIFORM_NAME), MAX_SPRITES_ROW);
 
 		// compile
@@ -694,7 +739,6 @@ namespace glerminal
 		update_sprites();
 
 		glBindTextureUnit(2, m_sprites_texture);
-		const auto err = glGetError();
 
 		// -- setup framebuffer --
 		glGenFramebuffers(1, &m_framebuffer);
@@ -737,6 +781,18 @@ namespace glerminal
 		glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, m_screen_framebuffer_backing_texture, 0);
 	}
 
+	void glerminal::init_audio()
+	{
+		const ma_result result = ma_engine_init(nullptr, &m_audio_engine);
+
+		if (result != MA_SUCCESS)
+		{
+			throw std::runtime_error("Failed to initialize audio engine");
+		}
+
+		ma_engine_set_volume(&m_audio_engine, 1);
+	}
+
 	void glerminal::deinit_glfw()
 	{
 		glfwDestroyWindow(m_window);
@@ -761,6 +817,15 @@ namespace glerminal
 		glDeleteProgram(m_program);
 	}
 
+	void glerminal::deinit_audio()
+	{
+		for (auto& elem : m_sounds)
+		{
+			ma_sound_uninit(&elem.second);
+		}
+		ma_engine_uninit(&m_audio_engine);
+	}
+
 	void glerminal::update_sprites()
 	{
 		glTextureSubImage2D(m_sprites_texture, 0, 0, 0, (CELL_SIZE + 2) * MAX_SPRITES_ROW, (CELL_SIZE + 2) * MAX_SPRITES_ROW, GL_RGBA, GL_UNSIGNED_BYTE, m_sprites);
@@ -778,25 +843,51 @@ namespace glerminal
 
 	void glerminal::glfw_key_handler(GLFWwindow* window, int key, int scancode, int action, int mods)
 	{
-		glerminal* const self = static_cast<glerminal*>(glfwGetWindowUserPointer(window));
+		const 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)
+	{
+		const glerminal* const self = static_cast<glerminal*>(glfwGetWindowUserPointer(window));
+
+		if (self->m_mousemoved) { self->m_mousemoved(x / (CELL_SIZE * CELL_SCALE), y / (CELL_SIZE * CELL_SCALE)); }
+	}
+
+	void glerminal::glfw_mousepress_handler(GLFWwindow *window, int button, int action, int mods)
+	{
+		const 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 * CELL_SCALE), y / (CELL_SIZE * CELL_SCALE));
+		}
+
+		if (self->m_mousereleased && action == GLFW_RELEASE)
+		{
+			self->m_mousereleased(button, x / (CELL_SIZE * CELL_SCALE), y / (CELL_SIZE * CELL_SCALE));
+		}
+	}
+
 }
 
-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;
 	}
@@ -820,39 +911,39 @@ void glerminal_flush()
 	GLERMINAL_G->flush();
 }
 
-void glerminal_set(unsigned char x, unsigned char y, unsigned char layer, unsigned short sprite)
+void glerminal_set(int x, int y, int layer, unsigned short sprite)
 {
 	if (!GLERMINAL_G) { return; }
 
-	GLERMINAL_G->set(x, y, layer, sprite);
+	GLERMINAL_G->set(x + 1, y + 1, layer, sprite);
 }
 
-unsigned char glerminal_get(unsigned char x, unsigned char y, unsigned short layer)
+unsigned short glerminal_get(int x, int y, int layer)
 {
 	if (!GLERMINAL_G) { return 0; }
 
-	return GLERMINAL_G->get(x, y, layer);
+	return GLERMINAL_G->get(x + 1, y + 1, layer);
 }
 
-void glerminal_offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset)
+void glerminal_offset(int x, int y, int layer, float x_offset, float y_offset)
 {
 	if (!GLERMINAL_G) { return; }
 
-	GLERMINAL_G->offset(x, y, layer, x_offset, y_offset);
+	GLERMINAL_G->offset(x + 1, y + 1, layer, x_offset, y_offset);
 }
 
-void glerminal_color(unsigned char x, unsigned char y, unsigned char layer, unsigned int color)
+void glerminal_color(int x, int y, int layer, unsigned int color)
 {
 	if (!GLERMINAL_G) { return; }
 
-	GLERMINAL_G->color(x, y, layer, color);
+	GLERMINAL_G->color(x + 1, y + 1, layer, color);
 }
 
-void glerminal_scale(unsigned char x, unsigned char y, unsigned char layer, float scale)
+void glerminal_scale(int x, int y, int layer, float scale)
 {
 	if (!GLERMINAL_G) { return; }
 
-	GLERMINAL_G->scale(x, y, layer, scale);
+	GLERMINAL_G->scale(x + 1, y + 1, layer, scale);
 }
 
 int glerminal_load_sprites_file(const char* filename)
@@ -865,7 +956,7 @@ int glerminal_load_sprites_file(const char* filename)
 	stbi_uc* const buffer = stbi_load(filename, &w, &h, nullptr, 4);
 
 	// verify atlas size is a multiple of CELL_SIZE in each dimension
-	if (w % glerminal::CELL_SIZE == 0 && h % glerminal::CELL_SIZE == 0)
+	if (buffer && w % glerminal::CELL_SIZE == 0 && h % glerminal::CELL_SIZE == 0)
 	{
 		GLERMINAL_G->load_atlas(w / glerminal::CELL_SIZE, h / glerminal::CELL_SIZE, reinterpret_cast<unsigned int*>(buffer));
 
@@ -893,3 +984,10 @@ int glerminal_load_sprites_buffer(unsigned char width, unsigned char height, con
 		return false;
 	}
 }
+
+void glerminal_sound(const char* name)
+{
+	if (!GLERMINAL_G) { return; }
+
+	GLERMINAL_G->play_sound(name);
+}

source/miniaudio.c

@@ -0,0 +1,7 @@
+#ifndef GLERMINAL_MINIAUDIO_H
+#define GLERMINAL_MINIAUDIO_H
+
+#define MINIAUDIO_IMPLEMENTATION
+#include "miniaudio.h"
+
+#endif//GLERMINAL_MINIAUDIO_H

tests/CMakeLists.txt

@@ -17,7 +17,7 @@ target_include_directories(test-common
 		${CMAKE_SOURCE_DIR}/source
 )
 
-target_link_libraries(test-common PRIVATE glerminallib)
+target_link_libraries(test-common PRIVATE glerminal)
 
 file(GLOB_RECURSE
 	TEST_RESOURCES
@@ -52,5 +52,5 @@ list(TRANSFORM TEST_RESOURCES PREPEND ${CMAKE_CURRENT_BINARY_DIR}/)
 foreach(SOURCE_FILE ${TEST_SOURCES})
 	get_filename_component(SOURCE_FILENAME ${SOURCE_FILE} NAME_WLE)
 	add_executable(test-${SOURCE_FILENAME} WIN32 ${SOURCE_FILE} ${TEST_RESOURCES})
-	target_link_libraries(test-${SOURCE_FILENAME} PRIVATE glerminallib test-common)
+	target_link_libraries(test-${SOURCE_FILENAME} PRIVATE glerminal test-common)
 endforeach()

tests/basic.cpp

@@ -25,12 +25,12 @@ namespace
 		glerminal_quit();
 	}
 
-	void mainloop(float) {}
+	void mainloop(double) {}
 }
 
 int main()
 {
-	glerminal_run(init, mainloop, nullptr, nullptr);
+	glerminal_run({init, mainloop});
 
 	return 0;
 }

tests/test-common/test-common.cpp

@@ -8,7 +8,7 @@
 
 namespace
 {
-	unsigned char pixels[(GRID_WIDTH * CELL_SCALE * 8) * (GRID_HEIGHT * CELL_SCALE * 8) * 3];
+	unsigned char pixels[(GRID_WIDTH * CELL_SIZE * CELL_SCALE) * (GRID_HEIGHT * CELL_SIZE * CELL_SCALE) * 3];
 }
 
 void glerminal_test_save_image()
@@ -21,5 +21,5 @@ void glerminal_test_save_image()
 	glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_UNSIGNED_BYTE, pixels);
 
 	stbi_flip_vertically_on_write(true);
-	stbi_write_png("image.png", GRID_WIDTH * CELL_SCALE * 8, GRID_HEIGHT * CELL_SCALE * 8, 3, pixels, GRID_WIDTH * CELL_SCALE * 8 * 3);
+	stbi_write_png("image.png", GRID_WIDTH * CELL_SIZE * CELL_SCALE, GRID_HEIGHT * CELL_SIZE * CELL_SCALE, 3, pixels, GRID_WIDTH * CELL_SIZE * CELL_SCALE * 3);
 }