[nostalgia/core] Add support for getting screen dimensions

src/nostalgia/core/gba/gfx.cpp

@@ -101,6 +101,18 @@ ox::Error shutdownGfx(Context*) {
 	return OxError(0);
 }
 
+int getScreenWidth(Context*) {
+	return 240;
+}
+
+int getScreenHeight(Context*) {
+	return 160;
+}
+
+common::Point getScreenSize(Context*) {
+	return {240, 160};
+}
+
 [[nodiscard]] constexpr volatile uint32_t &bgCtl(int bg) noexcept {
 	switch (bg) {
 		case 0:

src/nostalgia/core/gfx.hpp

@@ -9,6 +9,7 @@
 #pragma once
 
 #include <ox/std/types.hpp>
+#include <nostalgia/common/point.hpp>
 
 #include "context.hpp"
 
@@ -80,7 +81,13 @@ struct Sprite {
 
 ox::Error initGfx(Context *ctx);
 
-ox::Error shutdownGfx(Context*);
+ox::Error shutdownGfx(Context *ctx);
+
+int getScreenWidth(Context *ctx);
+
+int getScreenHeight(Context *ctx);
+
+common::Point getScreenSize(Context *ctx);
 
 ox::Error initConsole(Context *ctx);
 

src/nostalgia/core/sdl/gfx.cpp

@@ -6,6 +6,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
+#include "nostalgia/common/point.hpp"
 #include <array>
 #ifdef NOST_FPS_PRINT
 #include <iostream>
@@ -57,4 +58,25 @@ ox::Error shutdownGfx(Context *ctx) {
 	return OxError(0);
 }
 
+int getScreenWidth(Context *ctx) {
+	auto id = ctx->windowerData<SdlImplData>();
+	int x = 0, y = 0;
+	SDL_GetWindowSize(id->window, &x, &y);
+	return x;
+}
+
+int getScreenHeight(Context *ctx) {
+	auto id = ctx->windowerData<SdlImplData>();
+	int x = 0, y = 0;
+	SDL_GetWindowSize(id->window, &x, &y);
+	return y;
+}
+
+common::Point getScreenSize(Context *ctx) {
+	auto id = ctx->windowerData<SdlImplData>();
+	int x = 0, y = 0;
+	SDL_GetWindowSize(id->window, &x, &y);
+	return {x, y};
+}
+
 }