Init, drawing walls semi-works

CMakeLists.txt

@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.11...3.31)
+
+project(kubo LANGUAGES C)
+
+set(CMAKE_C_STANDARD 99)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+set(RAYLIB_VERSION 5.5)
+find_package(raylib ${RAYLIB_VERSION} REQUIRED)
+
+set(SOURCES
+    kubo_wall.c
+    kubo_window.c
+    kubo_context.c
+    main.c
+)
+
+add_executable(kubo ${SOURCES})
+
+target_link_libraries(kubo raylib)

kubo_context.c

@@ -0,0 +1,54 @@
+#include "kubo_context.h"
+
+struct kubo_context *kubo_context_init() {
+    struct kubo_context *context = malloc(sizeof(struct kubo_context));
+
+    context->num_walls_alloc = KUBO_CONTEXT_NUM_WALLS_ALLOC;
+    context->walls =
+        malloc(sizeof(struct kubo_wall) * context->num_walls_alloc);
+
+    return context;
+}
+
+void kubo_context_cleanup(struct kubo_context *context) {
+    free(context->walls);
+    free(context);
+}
+
+bool kubo_context_add_wall(struct kubo_context *context,
+                           struct kubo_wall *wall) {
+
+    struct kubo_wall **new_walls;
+
+    if (context->num_walls == context->num_walls_alloc - 1) {
+
+        context->num_walls_alloc *= 2;
+
+        new_walls = realloc(context->walls, sizeof(struct kubo_wall *) *
+                                                context->num_walls_alloc);
+
+        if (!new_walls)
+            return false;
+
+        context->walls = new_walls;
+    }
+
+    context->walls[context->num_walls++] = wall;
+
+    return true;
+}
+
+struct kubo_wall *kubo_context_get_pending_wall(struct kubo_context *context) {
+
+    if (context->num_walls > 0 &&
+        (context->walls[context->num_walls - 1]->wall_state == KUBO_WALL_INIT ||
+         context->walls[context->num_walls - 1]->wall_state ==
+             KUBO_WALL_STARTED)) {
+        return context->walls[context->num_walls - 1];
+    }
+
+    struct kubo_wall *wall = kubo_wall_init();
+    kubo_context_add_wall(context, wall);
+
+    return wall;
+}

kubo_context.h

@@ -0,0 +1,28 @@
+#ifndef KUBO_CONTEXT_H
+#define KUBO_CONTEXT_H
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "kubo_wall.h"
+
+#define KUBO_CONTEXT_NUM_WALLS_ALLOC 4
+
+struct kubo_context {
+    bool exit_pending;
+
+    struct kubo_wall **walls;
+    unsigned int num_walls;
+    unsigned int num_walls_alloc;
+};
+
+struct kubo_context *kubo_context_init();
+void kubo_context_cleanup(struct kubo_context *context);
+
+bool kubo_context_add_wall(struct kubo_context *context,
+                           struct kubo_wall *wall);
+
+struct kubo_wall *kubo_context_get_pending_wall(struct kubo_context *context);
+
+#endif

kubo_wall.c

@@ -0,0 +1,40 @@
+#include "kubo_wall.h"
+
+struct kubo_wall *kubo_wall_init() {
+    struct kubo_wall *wall = malloc(sizeof(struct kubo_wall));
+
+    if (!wall)
+        return NULL;
+
+    wall->num_vertices_alloc = KUBO_WALL_INIT_VERTICES;
+    wall->vertices = malloc(sizeof(Vector2) * wall->num_vertices_alloc);
+
+    return wall;
+}
+
+void kubo_wall_cleanup(struct kubo_wall *wall) {
+    free(wall->vertices);
+    free(wall);
+}
+
+bool kubo_wall_append(struct kubo_wall *wall, Vector2 vertex) {
+
+    Vector2 *new_vertices;
+
+    if (wall->num_vertices == wall->num_vertices_alloc - 1) {
+
+        wall->num_vertices_alloc *= 2;
+
+        new_vertices =
+            realloc(wall->vertices, sizeof(Vector2) * wall->num_vertices_alloc);
+
+        if (!new_vertices)
+            return false;
+
+        wall->vertices = new_vertices;
+    }
+
+    wall->vertices[wall->num_vertices++] = vertex;
+
+    return true;
+}

kubo_wall.h

@@ -0,0 +1,28 @@
+#ifndef KUBO_WALL_H
+#define KUBO_WALL_H
+
+#include <stdlib.h>
+#include <raylib.h>
+
+#define KUBO_WALL_INIT_VERTICES 4
+
+enum kubo_wall_state {
+    KUBO_WALL_INIT,
+    KUBO_WALL_STARTED,
+    KUBO_WALL_DONE
+};
+
+struct kubo_wall {
+    Vector2 *vertices;
+    unsigned int num_vertices; 
+    unsigned int num_vertices_alloc;
+
+    enum kubo_wall_state wall_state;
+};
+
+struct kubo_wall *kubo_wall_init();
+void kubo_wall_cleanup(struct kubo_wall *wall);
+
+bool kubo_wall_append(struct kubo_wall *wall, Vector2 vertex);
+
+#endif

kubo_window.c

@@ -0,0 +1,74 @@
+#include "kubo_window.h"
+
+void kubo_window_init(struct kubo_context *context) {
+    InitWindow(KUBO_WINDOW_WIDTH, KUBO_WINDOW_HEIGHT, "Kubo");
+}
+
+void kubo_window_cleanup(struct kubo_context *context) { CloseWindow(); }
+
+bool kubo_window_should_close(struct kubo_context *context) {
+    return context->exit_pending || WindowShouldClose();
+}
+
+void kubo_window_tick(struct kubo_context *context) {
+    kubo_window_render(context);
+    kubo_window_input(context);
+}
+
+Vector2 start;
+Vector2 end;
+int state;
+
+void kubo_window_render(struct kubo_context *context) {
+    BeginDrawing();
+    ClearBackground(WHITE);
+
+    if (state == 1) {
+        Vector2 mouse_pos = GetMousePosition();
+        Vector2 points[] = {start, mouse_pos};
+        DrawSplineLinear(points, 2, 10.f, BLACK);
+    } else if (state == 2) {
+        Vector2 mouse_pos = GetMousePosition();
+        Vector2 points[] = {start, end};
+        DrawSplineLinear(points, 2, 10.f, BLACK);
+    }
+
+    for (int i = 0; i < context->num_walls; i++) {
+        if (context->walls[i]->wall_state == KUBO_WALL_STARTED) {
+            Vector2 mouse_pos = GetMousePosition();
+            Vector2 points[] = {context->walls[i]->vertices[0], mouse_pos};
+            DrawSplineLinear(points, 2, 10.f, BLACK);
+        } else if (context->walls[i]->wall_state == KUBO_WALL_DONE) {
+            DrawSplineLinear(context->walls[i]->vertices,
+                             context->walls[i]->num_vertices, 10.f, BLACK);
+        }
+    }
+
+    EndDrawing();
+}
+
+void kubo_window_input(struct kubo_context *context) {
+    if (IsKeyPressed(KEY_Q)) {
+        printf("q\n");
+        context->exit_pending = true;
+    }
+
+    if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) {
+
+        struct kubo_wall *current_wall = kubo_context_get_pending_wall(context);
+
+        if (current_wall->wall_state == KUBO_WALL_INIT) {
+            printf("new wall\n");
+            Vector2 start_pos = GetMousePosition();
+            kubo_wall_append(current_wall, start_pos);
+            current_wall->wall_state = KUBO_WALL_STARTED;
+        } else if (current_wall->wall_state == KUBO_WALL_STARTED) {
+            printf("started wall\n");
+            Vector2 end_pos = GetMousePosition();
+            kubo_wall_append(current_wall, end_pos);
+            current_wall->wall_state = KUBO_WALL_DONE;
+        } else {
+            printf("neither?\n");
+        }
+    }
+}

kubo_window.h

@@ -0,0 +1,22 @@
+#ifndef KUBO_WINDOW_H
+#define KUBO_WINDOW_H
+
+#include <stdio.h>
+#include <raylib.h>
+
+#include "kubo_context.h"
+
+#define KUBO_WINDOW_WIDTH 1000
+#define KUBO_WINDOW_HEIGHT 800
+
+void kubo_window_init(struct kubo_context *context);
+void kubo_window_cleanup(struct kubo_context *context);
+
+bool kubo_window_should_close(struct kubo_context *context);
+
+void kubo_window_tick(struct kubo_context *context);
+
+void kubo_window_render(struct kubo_context *context);
+void kubo_window_input(struct kubo_context *context);
+
+#endif

main.c

@@ -0,0 +1,21 @@
+#include <raylib.h>
+#include <stdio.h>
+
+#include "kubo_context.h"
+#include "kubo_window.h"
+
+int main(int argc, char *argv[]) {
+
+    struct kubo_context *context = kubo_context_init();
+
+    kubo_window_init(context);
+
+    while (!kubo_window_should_close(context)) {
+        kubo_window_tick(context);
+    }
+
+    kubo_window_cleanup(context);
+    kubo_context_cleanup(context);
+
+    return 0;
+}