initial commit

1 files changed, 178 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..a304797
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,178 @@
+#define SDL_MAIN_HANDLED
+#include <SDL2/SDL.h>
+
+#include <stdlib.h>
+
+#include "input.h"
+#include "loader.h"
+#include "util.h"
+
+#include "tilemap.h"
+
+SDL_Window *window = NULL;
+SDL_Renderer *renderer = NULL;
+
+#define WINDOW_WIDTH 160
+#define WINDOW_HEIGHT 90
+#define INIT_SUBSYSTEMS SDL_INIT_VIDEO
+
+unsigned input_now = 0;
+SDL_Scancode keybinds[] = {
+	SDL_SCANCODE_UP,
+	SDL_SCANCODE_DOWN,
+	SDL_SCANCODE_LEFT,
+	SDL_SCANCODE_RIGHT,
+	SDL_SCANCODE_A,
+	SDL_SCANCODE_S,
+};
+
+int main(int argc, char **argv) {
+	if (SDL_Init(INIT_SUBSYSTEMS)) {
+		fprintf(stderr, "failed to initialize SDL2: %s\n", SDL_GetError());
+		return EXIT_FAILURE;
+	}
+	SDL_StopTextInput();
+	
+	window = SDL_CreateWindow(":3", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_RESIZABLE | SDL_WINDOW_HIDDEN);
+	if (window == NULL) {
+		goto end;
+	}
+	renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_SOFTWARE| SDL_RENDERER_TARGETTEXTURE | SDL_RENDERER_PRESENTVSYNC);
+	if (renderer == NULL) {
+		goto end;
+	}
+	SDL_RenderSetLogicalSize(renderer, WINDOW_WIDTH, WINDOW_HEIGHT);
+	
+	{
+		res_init_texture();
+		res_init_map();
+		init_tilemap();
+		void *a = util_executableRelativePath("assets.res", *argv, 0);
+		puts(a);
+		if (loadResources(a)) {
+			fputs("loading resources failed\n", stderr);
+			return 1;
+		}
+		free(a);
+		struct blob map = res_get_map("out");
+		printf("load_tilemap %u\n", load_tilemap(map.data, map.size));
+		SDL_SetRenderTarget(renderer, NULL);
+	}
+
+	SDL_ShowWindow(window);
+	
+	int x = 0, y = 0;
+	while (1) {
+		SDL_Event evt;
+		while (SDL_PollEvent(&evt)) {
+			switch (evt.type) {
+				case SDL_QUIT: // the last window is closed, or the app is asked to terminate
+					fputs("quitting...\n", stderr);
+					goto end;
+				case SDL_KEYDOWN:
+				case SDL_KEYUP: // a key on is pressed or released
+					if (evt.key.repeat)
+						break;
+					
+					// check for ^Q and exit if pressed
+					if (evt.key.state == SDL_PRESSED && evt.key.keysym.sym == SDLK_q && evt.key.keysym.mod & KMOD_CTRL) {
+						goto end;
+					}
+					
+					//static_assert(INPUT_LENGTH <= sizeof(input_now) * CHAR_BIT); // if this trips up, scope creep happened
+					for (unsigned key = 0, bit = 1; key < INPUT_LENGTH; key++, bit <<= 1) {
+						if (evt.key.keysym.scancode == keybinds[key]) {
+							if (evt.key.state == SDL_PRESSED)
+								input_now |= bit;
+							else
+								input_now &= ~bit;
+						}
+					}
+					//fprintf(stderr, "input: %0*b\n", INPUT_LENGTH, input_now);
+					break;
+				case SDL_MOUSEMOTION: // the cursor moves
+					//fprintf(stderr, "mouse at %4i %4i\n", evt.motion.x, evt.motion.y);
+					break;
+				case SDL_MOUSEBUTTONDOWN:
+				case SDL_MOUSEBUTTONUP: // a left click or release
+					if (evt.button.state) {
+						//fprintf(stderr, "click %i\n", evt.button.button);
+					}
+					if (!evt.button.state) {
+						//fprintf(stderr, "unclick %i\n", evt.button.button);
+					}
+					break;
+				case SDL_MOUSEWHEEL: // the scroll wheel gets rolled
+					//fprintf(stderr, "scrolled by %2i %2i %4.1f %4.1f\n", evt.wheel.x, evt.wheel.y, evt.wheel.preciseX, evt.wheel.preciseY);
+					break;
+				case SDL_WINDOWEVENT: // window related events
+					switch (evt.window.event) {
+						case SDL_WINDOWEVENT_SHOWN:
+							//fprintf(stderr, "window %u shown\n", evt.window.windowID);
+							break;
+						case SDL_WINDOWEVENT_HIDDEN:
+							//fprintf(stderr, "window %u hidden\n", evt.window.windowID);
+							break;
+						case SDL_WINDOWEVENT_EXPOSED:
+							//fprintf(stderr, "window %u exposed\n", evt.window.windowID);
+							break;
+						case SDL_WINDOWEVENT_MOVED: // a window is moved
+							//fprintf(stderr, "window %u moved %4i %4i\n", evt.window.windowID, evt.window.data1, evt.window.data2);
+							//wx = evt.window.data1;
+							//wy = evt.window.data2;
+							break;
+						case SDL_WINDOWEVENT_MINIMIZED:
+							//fprintf(stderr, "window %u minimized\n", evt.window.windowID);
+							break;
+						case SDL_WINDOWEVENT_MAXIMIZED:
+							//fprintf(stderr, "window %u maximized\n", evt.window.windowID);
+							break;
+						case SDL_WINDOWEVENT_RESTORED:
+							//fprintf(stderr, "window %u restored\n", evt.window.windowID);
+							break;
+						case SDL_WINDOWEVENT_ENTER:
+						case SDL_WINDOWEVENT_LEAVE: // cursor enters or leaves a window
+						case SDL_WINDOWEVENT_FOCUS_GAINED:
+						case SDL_WINDOWEVENT_FOCUS_LOST: // keyboard
+
+							break;
+						case SDL_WINDOWEVENT_CLOSE: // a window is asked to close
+							//fprintf(stderr, "window %u closed\n", evt.window.windowID);
+							break;
+						case SDL_WINDOWEVENT_TAKE_FOCUS:
+							//fprintf(stderr, "window %u offered focus\n", evt.window.windowID);
+							break;
+						case SDL_WINDOWEVENT_HIT_TEST:
+							//fprintf(stderr, "window %u hit test\n", evt.window.windowID);
+							break;
+						default:
+							fprintf(stderr, "window %u event %i\n", evt.window.windowID, evt.window.event);
+					}
+					break;
+				default:
+					fprintf(stderr, "unknown event type %i\n", evt.type);
+			}
+		}
+		SDL_SetRenderTarget(renderer, NULL);
+		SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
+		SDL_RenderClear(renderer);
+		SDL_SetRenderDrawColor(renderer, 0, 128, 255, 0);
+		SDL_RenderFillRect(renderer, &(SDL_Rect) {0, 0, WINDOW_WIDTH, WINDOW_HEIGHT});
+		SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);
+		//SDL_RenderCopy(renderer, tilemap_tileset, &(SDL_Rect) {0, 0, 128, 90}, &(SDL_Rect) {0, 0, 128, 90});
+		SDL_RenderCopy(renderer, tilemap_tilemap, &(SDL_Rect) {x, y, WINDOW_WIDTH, WINDOW_HEIGHT}, &(SDL_Rect) {0, 0, WINDOW_WIDTH, WINDOW_HEIGHT});
+		x += input_right(input_now) - input_left(input_now);
+		y += input_down(input_now) - input_up(input_now);
+		if (x < 0) {x = 0;} else if (x + WINDOW_WIDTH > 29 * 8) {x = 29 * 8 - WINDOW_WIDTH;}
+		if (y < 0) {y = 0;} else if (y + WINDOW_HEIGHT > 19 * 8) {y = 19 * 8 - WINDOW_HEIGHT;}
+		//SDL_RenderCopy(renderer, res_get_texture("meow").data, &(SDL_Rect) {0, 0, 128, 90}, &(SDL_Rect) {0, 0, 128, 90});
+		// then we wait for the next video frame 
+		SDL_RenderPresent(renderer);
+	}
+	
+	end:
+	SDL_DestroyRenderer(renderer);
+	SDL_DestroyWindow(window);
+	//SDL_QuitSubSystem(INIT_SUBSYSTEMS);
+	return 0;
+}