refactor file structure

include/dangerzone/engine.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <SDL3/SDL.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef struct {
+	SDL_Event event;
+	bool is_running;
+	bool framebuffer_dirty;
+	SDL_Rect dirty_rect;
+	uint16_t width, height;
+	uint32_t *framebuffer;
+} game_state_t;
+
+extern game_state_t *game_state;
+
+bool
+engine_init(
+	uint32_t window_width,
+	uint32_t window_height,
+	const char window_name[],
+	void (*engine_poll_events)(void),
+	void (*engine_update_framebuffer)(void)
+);
+
+void
+engine_start();
+
+void
+engine_stop();

include/dangerzone/render/misc.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <stdint.h>
+
+void 
+put_pixel(
+	unsigned int x, 
+	unsigned int y, 
+	uint32_t color
+);
+
+void 
+clear_framebuffer(
+	uint32_t color
+);

include/dangerzone/render/rect.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <stdint.h>
+
+void
+put_rect(
+	uint32_t x, 
+	uint32_t y, 
+	uint32_t w, 
+	uint32_t h,
+	uint32_t color
+);
+
+void
+clear_rect(int x, int y, int w, int h, uint32_t color);
+
+void
+mark_dirty_rect(int x, int y, int w, int h);

include/dangerzone/render/text.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <stdint.h>
+
+void
+put_char(
+	char c,
+	uint32_t x, 
+	uint32_t y,
+	uint32_t size,
+	uint32_t fg_color,
+	uint32_t bg_color
+);
+
+void
+put_string(
+    const char *text,
+    uint32_t x,
+    uint32_t y,
+    uint32_t size,
+    uint32_t spacing,
+    uint32_t line_spacing,
+    uint32_t fg_color,
+    uint32_t bg_color
+);