20 files changed, 680 insertions, 0 deletions

diff --git a/src/engine/M_block.c b/src/engine/M_block.c
new file mode 100644
index 0000000..0f3fb27
--- /dev/null
+++ b/src/engine/M_block.c
@@ -0,0 +1,33 @@
+#include "M_block.h"
+
+void M_createBlock(M_Block *block, unsigned short type)
+{
+	block->type = type;
+}
+
+unsigned short M_createBlockType(M_Object obj, M_BlockAtlas *atl)
+{
+	M_BlockType block_type;
+	block_type.obj = obj;
+
+	if (atl->block_amount >= atl->size) {
+		atl->size += 10;
+		atl->blocks = realloc(atl->blocks, atl->size*sizeof(M_BlockType));
+	}
+	atl->blocks[atl->block_amount++] = block_type;
+	return atl->block_amount;
+}
+
+M_BlockAtlas M_createBlockAtlas()
+{
+	return (M_BlockAtlas){
+		.blocks = malloc(10*sizeof(M_BlockType)),
+		.block_amount = 0,
+		.size = 10
+	};
+}
+
+void M_killBlockAtlas(M_BlockAtlas *atl)
+{
+	free(atl->blocks);
+}
diff --git a/src/engine/M_block.h b/src/engine/M_block.h
new file mode 100644
index 0000000..852830c
--- /dev/null
+++ b/src/engine/M_block.h
@@ -0,0 +1,26 @@
+#pragma once
+
+//#include "M_types.ḥ"
+#include "M_object.h"
+
+typedef struct {
+	unsigned short type;
+} M_Block;
+
+typedef struct {
+	M_Object obj;
+} M_BlockType;
+
+typedef struct {
+	M_BlockType *blocks;
+	unsigned short block_amount;
+	unsigned short size;
+} M_BlockAtlas;
+
+void M_createBlock(M_Block *block, unsigned short type);
+
+unsigned short M_createBlockType(M_Object obj, M_BlockAtlas *atl);
+
+M_BlockAtlas M_createBlockAtlas();
+
+void M_killBlockAtlas(M_BlockAtlas *atl);
diff --git a/src/engine/M_camera.c b/src/engine/M_camera.c
new file mode 100644
index 0000000..58414a7
--- /dev/null
+++ b/src/engine/M_camera.c
@@ -0,0 +1,30 @@
+#include "M_camera.h"
+
+void M_initCamera(M_Camera *camera, vec3 up)
+{
+	glm_vec3_zero(camera->pos);
+	glm_vec3_copy(
+			up,
+			camera->up
+			);
+	glm_vec3_copy(
+			(vec3){0.0f, 0.0f, -1.0f},
+			camera->direction
+			);
+}
+
+inline void M_cameraViewMatrix(M_Camera* camera)
+{
+	vec3 target;
+	glm_vec3_add(
+			camera->pos,
+			camera->direction,
+			target
+			);
+	glm_lookat(
+			camera->pos,
+			target,
+			camera->up,
+			camera->view_matrix
+			);
+}
diff --git a/src/engine/M_camera.h b/src/engine/M_camera.h
new file mode 100644
index 0000000..4663a94
--- /dev/null
+++ b/src/engine/M_camera.h
@@ -0,0 +1,19 @@
+#pragma once
+
+#include <cglm/cglm.h>
+#include <cglm/mat4.h>
+#include <cglm/vec3.h>
+
+typedef struct {
+	vec3 pos;
+	vec3 direction;
+	vec3 up;
+
+	mat4 view_matrix;
+} M_Camera;
+
+
+void M_initCamera(M_Camera *camera, vec3 up);
+
+//Generates the M_Camera's view matrix required for rendering
+void M_cameraViewMatrix(M_Camera *camera);
diff --git a/src/engine/M_chunk.c b/src/engine/M_chunk.c
new file mode 100644
index 0000000..5c120f5
--- /dev/null
+++ b/src/engine/M_chunk.c
@@ -0,0 +1,24 @@
+#include "M_chunk.h"
+
+void M_generateChunk(M_Chunk *chunk)
+{
+	for (int x=0;x<M_CHUNK_SIZE;x++)
+	for (int y=0;y<M_CHUNK_SIZE;y++)
+	for (int z=0;z<M_CHUNK_SIZE;z++) {
+		M_Block block;
+		M_createBlock(&block, 0);
+		chunk->blocks[x][y][z] = block;
+	}
+}
+
+void M_renderChunk(M_Game *game, M_Chunk *chunk)
+{
+	for (int x=0;x<M_CHUNK_SIZE;x++)
+	for (int y=0;y<M_CHUNK_SIZE;y++)
+	for (int z=0;z<M_CHUNK_SIZE;z++) {
+		M_Block block = chunk->blocks[x][y][z];
+		M_Object *block_object = &game->block_atlas.blocks[block.type].obj;
+		M_moveObject(block_object, (vec3){(float)x, (float)y-32, (float)z});
+		M_drawObject(&game->render_info, &game->player.camera, block_object);
+	}
+}
diff --git a/src/engine/M_chunk.h b/src/engine/M_chunk.h
new file mode 100644
index 0000000..be1d4f1
--- /dev/null
+++ b/src/engine/M_chunk.h
@@ -0,0 +1,17 @@
+#pragma once
+
+#include "M_object.h"
+#include "M_block.h"
+#include "M_game.h"
+
+#define M_CHUNK_SIZE 32
+
+
+typedef struct {
+	M_Block blocks[M_CHUNK_SIZE][M_CHUNK_SIZE][M_CHUNK_SIZE];
+	int x, y, z;
+} M_Chunk;
+
+void M_generateChunk(M_Chunk *chunk);
+
+void M_renderChunk(M_Game *game, M_Chunk *chunk);
diff --git a/src/engine/M_cube.c b/src/engine/M_cube.c
new file mode 100644
index 0000000..3be7417
--- /dev/null
+++ b/src/engine/M_cube.c
@@ -0,0 +1,39 @@
+#include "M_cube.h"
+
+M_ViewModel M_createCube()
+{
+	float vertices[] = {
+		 1.0f,  1.0f, -1.0f,
+		 1.0f, -1.0f, -1.0f,
+		-1.0f, -1.0f, -1.0f,
+		-1.0f,  1.0f, -1.0f,
+
+		 1.0f,  1.0f, 1.0f,
+		 1.0f, -1.0f, 1.0f,
+		-1.0f, -1.0f, 1.0f,
+		-1.0f,  1.0f, 1.0f
+	};
+	unsigned int indices[] = {
+		0, 1, 2,
+		0, 2, 3,
+
+		4, 5, 6,
+		4, 6, 7,
+
+		0, 4, 5,
+		2, 6, 3,
+
+		3, 7, 6,
+		1, 5, 0,
+
+		3, 7, 0,
+		0, 4, 7,
+
+		2, 6, 1,
+		1, 5, 6
+	};
+
+	M_ViewModel model;
+	M_createViewModel(&model, 8, vertices, 38, indices);
+	return model;
+}
diff --git a/src/engine/M_cube.h b/src/engine/M_cube.h
new file mode 100644
index 0000000..5c82901
--- /dev/null
+++ b/src/engine/M_cube.h
@@ -0,0 +1,4 @@
+#pragma once
+#include "M_object.h"
+
+M_ViewModel M_createCube();
diff --git a/src/engine/M_game.c b/src/engine/M_game.c
new file mode 100644
index 0000000..3c76d96
--- /dev/null
+++ b/src/engine/M_game.c
@@ -0,0 +1,66 @@
+#include "M_game.h"
+
+int M_initGame(M_Game *game, const char *window_title)
+{
+	game->window_width = 1280;
+	game->window_height = 720;
+
+	SDL_Init(
+			SDL_INIT_VIDEO
+			);
+
+	game->window = SDL_CreateWindow(
+			window_title,
+			game->window_width,
+			game->window_height,
+			SDL_WINDOW_OPENGL
+			);
+	M_setupProjection(90.0f, ((float)game->window_width)/((float)game->window_height), &game->render_info);
+	
+	game->block_atlas = M_createBlockAtlas();
+
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
+	game->gpu = SDL_GL_CreateContext(game->window);
+
+	SDL_GL_MakeCurrent(game->window, game->gpu);
+
+	game->running = 1;
+
+	int version = gladLoadGL((GLADloadfunc)SDL_GL_GetProcAddress);
+	if (version == 0) {
+		return 1;
+	}
+
+	game->event_handler = SDL_CreateThread(M_handleEvents, "eventHandler", (void*)game);
+
+	glClearColor(0.0f, 0.25f, 0.5f, 1.0f);
+
+	glEnable(GL_DEPTH_TEST);
+
+	return 0;
+}
+
+int M_killGame(M_Game *game)
+{
+	SDL_WaitThread(game->event_handler, NULL);
+	SDL_Quit();
+	return 0;
+}
+
+int SDLCALL M_handleEvents(void* arg)
+{
+	M_Game *game = arg;
+	SDL_Event event;
+	while (game->running) {
+		SDL_PollEvent(&event);
+		switch (event.type) {
+			case SDL_EVENT_QUIT:
+				game->running = 0;
+				break;
+		}
+		SDL_Delay(1);
+	}
+	return 0;
+}
diff --git a/src/engine/M_game.h b/src/engine/M_game.h
new file mode 100644
index 0000000..a0b7942
--- /dev/null
+++ b/src/engine/M_game.h
@@ -0,0 +1,33 @@
+#pragma once
+
+#include <SDL3/SDL_init.h>
+#include <SDL3/SDL_video.h>
+#include <SDL3/SDL_timer.h>
+
+#include <glad/gl.h>
+
+//#include "M_types.h"
+#include "M_render.h"
+#include "M_player.h"
+//#include "M_object.h"
+#include "M_block.h"
+
+typedef struct {
+	SDL_Window *window;
+	SDL_GLContext gpu;
+
+	int window_width, window_height;
+	int running;
+	M_RenderInfo render_info;
+
+	M_BlockAtlas block_atlas;
+
+	M_Player player;
+
+	SDL_Thread *event_handler;
+} M_Game;
+
+int M_initGame(M_Game *game, const char *window_title);
+int M_killGame(M_Game *game);
+
+int SDLCALL M_handleEvents(void* arg);
diff --git a/src/engine/M_main.c b/src/engine/M_main.c
new file mode 100644
index 0000000..93c186e
--- /dev/null
+++ b/src/engine/M_main.c
@@ -0,0 +1,48 @@
+#include <SDL3/SDL_video.h>
+
+#include "M_game.h"
+#include "M_object.h"
+#include "M_cube.h"
+#include "M_block.h"
+#include "M_chunk.h"
+
+int main()
+{
+	M_Game game;
+	M_initGame(&game, "MNM Engine");
+	M_initPlayer(&game.player);
+
+	M_ViewModel cube_model = M_createCube();
+
+	M_ShaderProgram my_shader = M_createShaderProgram(
+			"../src/shaders/test.vert",
+			"../src/shaders/test.frag"
+			);
+
+	M_Object my_cube;
+	M_createObject(&my_cube, &cube_model);
+	my_cube.shader = &my_shader;
+
+	M_scaleObject(&my_cube, (vec3){0.5f, 0.5, 0.5f});
+
+	M_createBlockType(my_cube, &game.block_atlas);
+
+	M_Chunk my_chunk;
+	M_generateChunk(&my_chunk);
+
+	M_moveObject(&my_cube, (vec3){0.0f, -0.5f, -1.0f});
+
+	M_bindViewModel(my_cube.model);
+
+	while (game.running) {
+		glClear(GL_COLOR_BUFFER_BIT);
+		glClear(GL_DEPTH_BUFFER_BIT);
+		M_renderChunk(&game, &my_chunk);
+		SDL_GL_SwapWindow(game.window);
+	}
+
+	M_killShaderProgram(&my_shader);
+	M_killViewModel(&cube_model);
+	M_killGame(&game);
+	return 0;
+}
diff --git a/src/engine/M_object.c b/src/engine/M_object.c
new file mode 100644
index 0000000..07293d5
--- /dev/null
+++ b/src/engine/M_object.c
@@ -0,0 +1,108 @@
+#include "M_object.h"
+#include "M_camera.h"
+
+void M_createViewModel(M_ViewModel *model, int num_vertices, float *vert, int num_indices, unsigned int *indices)
+{
+	model->num_indices = num_indices;
+	
+	glGenVertexArrays(1, &model->VAO);
+	glBindVertexArray(model->VAO);
+
+	glGenBuffers(1, &model->VBO);
+	glBindBuffer(GL_ARRAY_BUFFER, model->VBO);
+	glBufferData(GL_ARRAY_BUFFER, sizeof(float)*num_vertices*3, vert, GL_STATIC_DRAW);
+
+	glGenBuffers(1, &model->EBO);
+
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, model->EBO);
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(unsigned int)*num_indices, indices, GL_STATIC_DRAW);
+
+	glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
+	glEnableVertexAttribArray(0);
+}
+
+void M_killViewModel(M_ViewModel *model)
+{
+	glDeleteVertexArrays(1, &model->VAO);
+	glDeleteBuffers(1, &model->VBO);
+	glDeleteBuffers(1, &model->EBO);
+}
+
+M_ViewModel M_loadViewModel(const char* filename)
+{
+	const struct aiScene* scene = aiImportFile(filename,
+			aiProcess_CalcTangentSpace |
+			aiProcess_Triangulate |
+			aiProcess_JoinIdenticalVertices |
+			aiProcess_SortByPType);
+
+	struct aiMesh *mesh = scene->mMeshes[0];
+
+	unsigned int *indices = malloc(mesh->mNumFaces*3*sizeof(unsigned int));
+	int index = 0;
+	for (unsigned int i=0;i<mesh->mNumFaces;i++) {
+		memcpy(&indices[index], mesh->mFaces[i].mIndices, 3*sizeof(unsigned int));
+		index+=3;
+	}
+
+	M_ViewModel model;
+	M_createViewModel(&model, mesh->mNumVertices, (float*)mesh->mVertices, mesh->mNumFaces*3, indices);
+	free(indices);
+	return model;
+}
+
+void M_bindViewModel(M_ViewModel *model)
+{
+	glBindVertexArray(model->VAO);
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, model->EBO);
+}
+
+
+void M_createObject(M_Object *obj, M_ViewModel *model)
+{
+	obj->model = model;
+	glm_mat4_identity(obj->transform);
+
+	glm_vec3_zero(obj->pos);
+	glm_vec3_one(obj->size);
+
+	obj->rotation.angle = 0.0f;
+	glm_vec3_zero(obj->rotation.direction);
+}
+
+void M_moveObject(M_Object *obj, vec3 pos)
+{
+	glm_vec3_copy(
+			pos,
+			obj->pos
+			);
+	M_updateObjectTransform(obj);
+}
+
+void M_scaleObject(M_Object *obj, vec3 scale)
+{
+	glm_vec3_copy(
+			scale,
+			obj->size
+			);
+	M_updateObjectTransform(obj);
+}
+
+void M_rotateObject(M_Object *obj, float angle, vec3 direction)
+{
+	obj->rotation.angle = angle;
+	glm_vec3_copy(
+			direction,
+			obj->rotation.direction
+			);
+	M_updateObjectTransform(obj);
+}
+
+inline void M_updateObjectTransform(M_Object *obj)
+{
+	glm_mat4_identity(obj->transform);
+	glm_translate(obj->transform, obj->pos);
+	glm_rotate(obj->transform, obj->rotation.angle, obj->rotation.direction);
+	glm_scale(obj->transform, obj->size);
+}
+
diff --git a/src/engine/M_object.h b/src/engine/M_object.h
new file mode 100644
index 0000000..ca87f0a
--- /dev/null
+++ b/src/engine/M_object.h
@@ -0,0 +1,64 @@
+#pragma once
+
+#include <cglm/cglm.h>
+#include <cglm/mat4.h>
+#include <cglm/vec3.h>
+
+#include <assimp/cimport.h>
+#include <assimp/scene.h>
+#include <assimp/mesh.h>
+#include <assimp/postprocess.h>
+
+//#include "M_game.h"
+#include "M_shader.h"
+
+//Temporary type for storing M_Object rotation information,
+//will get replaced in later revisions.
+typedef struct {
+	float angle;
+	vec3 direction;
+} M_Rotation;
+
+//Stores information about a 3D model loaded in VRAM
+typedef struct {
+	int num_indices;
+
+	unsigned int VAO, VBO, EBO;
+} M_ViewModel;
+
+//Type meant for handling 3D models in a scene,
+//stores additional information like a model's position, size and rotation.
+typedef struct {
+	M_ViewModel *model;
+	M_ShaderProgram *shader;
+
+	vec3 pos, size;
+
+	M_Rotation rotation;
+
+	mat4 transform;
+} M_Object;
+
+//Creates a M_ViewModel out of vertices and indices manually
+void M_createViewModel(M_ViewModel *model, int num_vertices, float *vert, int num_indices, unsigned int *indices);
+
+//Unloads M_ViewModel from memory when no longer needed
+void M_killViewModel(M_ViewModel *model);
+
+//Loads and creates a M_ViewModel from a 3D object file like .obj
+M_ViewModel M_loadViewModel(const char* filename);
+
+//Creates a M_Object
+void M_createObject(M_Object *obj, M_ViewModel *model);
+
+
+//Functions for moving, scaling and rotating M_Object
+void M_moveObject(M_Object *obj, vec3 pos);
+void M_scaleObject(M_Object *obj, vec3 scale);
+void M_rotateObject(M_Object *obj, float angle, vec3 direction);
+
+//Updates M_Object transform matrix manually
+void M_updateObjectTransform(M_Object *obj);
+
+//Binds M_ViewModel for drawing
+void M_bindViewModel(M_ViewModel *model);
diff --git a/src/engine/M_player.c b/src/engine/M_player.c
new file mode 100644
index 0000000..1e065fd
--- /dev/null
+++ b/src/engine/M_player.c
@@ -0,0 +1,32 @@
+#include "M_player.h"
+
+void M_initPlayer(M_Player* player)
+{
+	glm_vec3_zero(player->pos);
+	M_initCamera(&player->camera, (vec3){0.0f, 1.0f, 0.0f});
+}
+
+void M_teleportPlayer(M_Player* player, vec3 pos)
+{
+	glm_vec3_copy(
+			pos,
+			player->pos
+			);
+	glm_vec3_copy(
+			pos,
+			player->camera.pos
+			);
+}
+
+void M_movePlayer(M_Player* player, vec3 pos)
+{
+	glm_vec3_add(
+			pos,
+			player->pos,
+			player->pos
+			);
+	glm_vec3_copy(
+			player->pos,
+			player->camera.pos
+			);
+}
diff --git a/src/engine/M_player.h b/src/engine/M_player.h
new file mode 100644
index 0000000..80856f8
--- /dev/null
+++ b/src/engine/M_player.h
@@ -0,0 +1,16 @@
+#pragma once
+
+#include <cglm/vec3.h>
+
+#include "M_camera.h"
+
+typedef struct {
+	vec3 pos;
+	M_Camera camera;
+} M_Player;
+
+void M_initPlayer(M_Player* player);
+
+
+//void M_teleportPlayer(M_Player* player, vec3 pos)
+void M_movePlayer(M_Player* player, vec3 pos);
diff --git a/src/engine/M_render.c b/src/engine/M_render.c
new file mode 100644
index 0000000..1d83ceb
--- /dev/null
+++ b/src/engine/M_render.c
@@ -0,0 +1,17 @@
+#include "M_render.h"
+
+void M_setupProjection(float fov, float aspect_ratio, M_RenderInfo *render_info)
+{
+	glm_perspective(fov, aspect_ratio, 0.01f, 10.0f, render_info->projection_matrix);
+}
+
+void M_drawObject(M_RenderInfo *render_info, M_Camera *camera, M_Object *obj)
+{
+	glUseProgram(obj->shader->prog);
+	glUniformMatrix4fv(obj->shader->transform_loc, 1, GL_FALSE, (float*)obj->transform);
+	M_cameraViewMatrix(camera);
+	glUniformMatrix4fv(obj->shader->view_loc, 1, GL_FALSE, (float*)camera->view_matrix);
+	glUniformMatrix4fv(obj->shader->projection_loc, 1, GL_FALSE, (float*)render_info->projection_matrix);
+
+	glDrawElements(GL_TRIANGLES, obj->model->num_indices, GL_UNSIGNED_INT, 0);
+}
diff --git a/src/engine/M_render.h b/src/engine/M_render.h
new file mode 100644
index 0000000..948f0d5
--- /dev/null
+++ b/src/engine/M_render.h
@@ -0,0 +1,16 @@
+#pragma once
+
+#include <cglm/cglm.h>
+#include <cglm/mat4.h>
+
+#include "M_object.h"
+#include "M_camera.h"
+
+typedef struct {
+	mat4 view_matrix, projection_matrix;
+} M_RenderInfo;
+
+void M_setupProjection(float fov, float aspect_ratio, M_RenderInfo *render_indo);
+
+//Draws M_Object in space
+void M_drawObject(M_RenderInfo *render_info, M_Camera *camera, M_Object *obj);
diff --git a/src/engine/M_shader.c b/src/engine/M_shader.c
new file mode 100644
index 0000000..17f6248
--- /dev/null
+++ b/src/engine/M_shader.c
@@ -0,0 +1,57 @@
+#include "M_shader.h"
+
+unsigned int M_loadShader(const char* filename, unsigned int shadertype)
+{
+	void* shader_source = SDL_LoadFile(filename, NULL);
+	unsigned int shader = glCreateShader(shadertype);
+	glShaderSource(shader, 1, (const char**)&shader_source, NULL);
+	glCompileShader(shader);
+	SDL_free(shader_source);
+
+	int success;
+
+	glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
+	if (!success) {
+		printf("Couldn't compile shader\n");
+		return 0;
+	}
+
+	return shader;
+}
+
+M_ShaderProgram M_createShaderProgram(const char *vertex_shader_file, const char* fragment_shader_file)
+{
+	unsigned int vertex_shader = M_loadShader(vertex_shader_file, GL_VERTEX_SHADER);
+	unsigned int fragment_shader = M_loadShader(fragment_shader_file, GL_FRAGMENT_SHADER);
+	return M_compileShaderProgram(vertex_shader, fragment_shader);
+}
+
+M_ShaderProgram M_compileShaderProgram(unsigned int vertex_shader, unsigned int fragment_shader)
+{
+	M_ShaderProgram shader_program;
+	shader_program.prog = glCreateProgram();
+	glAttachShader(shader_program.prog, vertex_shader);
+	glAttachShader(shader_program.prog, fragment_shader);
+	glLinkProgram(shader_program.prog);
+
+	shader_program.vertex_shader = vertex_shader;
+	shader_program.fragment_shader = fragment_shader;
+
+	int success;
+	glGetProgramiv(shader_program.prog, GL_LINK_STATUS, &success);
+	if (!success) {
+		printf("Couldn't link shader program\n");
+	}
+
+	shader_program.transform_loc = glGetUniformLocation(shader_program.prog, "model");
+	shader_program.view_loc = glGetUniformLocation(shader_program.prog, "view");
+	shader_program.projection_loc = glGetUniformLocation(shader_program.prog, "projection");
+
+	return shader_program;
+}
+
+void M_killShaderProgram(M_ShaderProgram *shader_program)
+{
+	glDeleteShader(shader_program->vertex_shader);
+	glDeleteShader(shader_program->fragment_shader);
+}
diff --git a/src/engine/M_shader.h b/src/engine/M_shader.h
new file mode 100644
index 0000000..0dbd170
--- /dev/null
+++ b/src/engine/M_shader.h
@@ -0,0 +1,21 @@
+#pragma once 
+
+#include <stdio.h>
+
+#include <SDL3/SDL_iostream.h>
+
+#include <glad/gl.h>
+
+typedef struct {
+	unsigned int prog;
+	unsigned int vertex_shader, fragment_shader;
+	unsigned int transform_loc, view_loc, projection_loc;
+} M_ShaderProgram;
+
+unsigned int M_loadShader(const char* filename, unsigned int shadertype);
+
+M_ShaderProgram M_createShaderProgram(const char *vertex_shader, const char* fragment_shader);
+
+M_ShaderProgram M_compileShaderProgram(unsigned int vertex_shader, unsigned int fragment_shader);
+
+void M_killShaderProgram(M_ShaderProgram *shader_program);
diff --git a/src/engine/M_types.h b/src/engine/M_types.h
new file mode 100644
index 0000000..cba3310
--- /dev/null
+++ b/src/engine/M_types.h
@@ -0,0 +1,10 @@
+#pragma once
+
+typedef struct M_Game;
+
+typedef struct M_ViewModel;
+typedef struct M_Object;
+
+typedef struct M_Block;
+typedef struct M_BlockType;
+typedef struct M_BlockAtlas;