a janky init

lib/global_objects.c

@@ -0,0 +1,55 @@
+#ifndef global_objects
+#define global_objects
+
+#include <math.h>
+
+#define flaot float
+
+typedef struct {
+    float x;
+    float y;
+} Point;
+
+void point_add(Point *A, Point *B){
+    A->x = A->x + B->x;
+    A->y = A->y + B->y;
+}
+
+void point_sub(Point *A, Point *B){
+    A->x = A->x - B->x;
+    A->y = A->y - B->y;
+}
+
+void point_mul(Point *A, Point *B){
+    A->x = A->x * B->x;
+    A->y = A->y * B->y;
+}
+
+/*
+fn set_mag(x: &f64,y: &f64, mag: &f64) -> Vec<f64>{
+        let getmag: f64 = magnitude(*x, *y);
+        let rx = (*x / getmag) * mag;
+        let ry = (*y / getmag) * mag;
+
+        return vec![rx,ry]
+}
+
+fn magnitude(x: f64,y: f64) -> f64 {
+    ((x).powi(2) + (y).powi(2)).sqrt()
+}
+*/
+
+float magnitude(flaot x, flaot y) {
+    return sqrt((pow(x,2) + pow(y,2)));
+}
+
+void point_set_mag(Point *point, float mag){
+        flaot getmag = magnitude(point->x, point->y);
+        flaot rx = (point->x / getmag) * mag;
+        flaot ry = (point->y / getmag) * mag;
+
+        point->x = rx;
+        point->y = ry;
+}
+
+#endif

lib/init.c

@@ -0,0 +1,61 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include "init.h"
+
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_video.h>
+
+int main(int argc, char *argv[])
+{
+	if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0)
+		SDL_Log("SDL fails to initialize! %s\n", SDL_GetError());
+
+    int startw=400;
+    int starth=400;
+
+	SDL_Window *window = SDL_CreateWindow(PROJECT_NAME, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, startw, starth, SDL_WINDOW_SHOWN | SDL_WINDOW_OPENGL);
+	if (!window) {
+		printf("Failed to create window: %s\n", SDL_GetError());
+	}
+	SDL_Renderer *renderer = SDL_CreateRenderer(window,-1,SDL_RENDERER_SOFTWARE);
+	if (!renderer) {
+		printf("Failed to create renderer: %s\n", SDL_GetError());
+	}
+
+
+    OBJECT obj = init_stuffs(startw,starth);
+
+    STUFFS stuff = {
+        startw,
+        starth,
+        false,
+        &obj,
+    };
+
+	bool quit = false;
+	SDL_Event e;
+	while (!quit) {
+		while (SDL_PollEvent(&e)) {
+			if (e.type == SDL_QUIT) {
+				quit = true;
+			}
+			else if(e.type == SDL_MOUSEBUTTONDOWN){
+				if(e.button.button==SDL_BUTTON_LEFT){
+                    stuff.mousedown=true;
+				} else if(e.button.button==SDL_BUTTON_RIGHT){
+				}
+			} else if(e.type==SDL_MOUSEBUTTONUP){
+                stuff.mousedown=false;
+			}
+		}
+		draw(renderer,window,&stuff);
+		SDL_Delay(30);
+	}
+
+    SDL_DestroyRenderer(renderer);
+    SDL_DestroyWindow(window);
+    SDL_QuitSubSystem(SDL_INIT_VIDEO);
+    SDL_Quit();
+
+	return 0;
+}

lib/init.h

@@ -0,0 +1,13 @@
+#ifndef inithell
+#define inithell
+
+#include <stdio.h>
+#include <stdbool.h>
+
+typedef struct{
+    int width;
+    int height;
+    bool mousedown;
+    OBJECT *obj;
+} STUFFS;
+#endif