initial commit

figuring stuff out as i go here, so sorry about the mess

LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2019 katherine
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Makefile

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+CFLAGS+=-Wall -O2 $(shell pkg-config --cflags allegro-5 allegro_image-5 allegro_font-5 allegro_ttf-5)
+CFLAGSDEBUG=-Wall -ggdb3 -O0 -DDEBUG $(shell pkg-config --cflags allegro-5 allegro_image-5 allegro_font-5 allegro_ttf-5)
+LDFLAGS+=-Wall -O2 $(shell pkg-config --libs allegro-5 allegro_image-5 allegro_font-5 allegro_ttf-5)
+LDFLAGSDEBUG=-Wall -ggdb3 -O0 -DDEBUG $(shell pkg-config --libs allegro-5 allegro_image-5 allegro_font-5 allegro_ttf-5)
+SRCDIR=./src
+OBJDIR=./obj
+SRC=$(wildcard $(SRCDIR)/*.c)
+OBJ=$(patsubst $(SRCDIR)%.c,$(OBJDIR)%.o,$(SRC))
+BIN=gafu
+
+all: $(OBJ)
+	$(CC) $(LDFLAGS) -o $(BIN) $^
+
+$(OBJ): | $(OBJDIR)
+
+$(OBJDIR)/%.o: $(SRCDIR)/%.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+$(OBJDIR):
+	mkdir -p $(OBJDIR)
+
+clean:
+	rm -rf $(OBJDIR) $(BIN)
+
+debug: CFLAGS=$(CFLAGSDEBUG)
+debug: LDFLAGS=$(LDFLAGSDEBUG)
+debug: all
+
+new: clean all

Readme.md

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+beginnings of an allegro5-based game engine
+
+nothing special here just yet. check back later

src/err.h

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+#ifndef GAFU_ERR_H
+#define GAFU_ERR_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define ERR(...) \
+	do { \
+		fprintf(stderr, "error: " __VA_ARGS__); \
+		fprintf(stderr, "\n"); \
+		exit(EXIT_FAILURE); \
+	} while (0)
+
+#define TRY(cond, ...) \
+	do { \
+		if (!(cond)) { \
+			ERR(__VA_ARGS__); \
+		} \
+	} while (0)
+
+#endif

src/main.c

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+#include "err.h"
+#include "set.h"
+
+#include <stdbool.h>
+
+#include <allegro5/allegro5.h>
+#include <allegro5/allegro_font.h>
+#include <allegro5/allegro_ttf.h>
+#include <allegro5/allegro_image.h>
+
+#define SCREEN_WIDTH 480
+#define SCREEN_HEIGHT 360
+static float screen_scale = 2;
+
+static inline void init_resources(ALLEGRO_DISPLAY **d, ALLEGRO_FONT **f,
+		ALLEGRO_EVENT_QUEUE **q, ALLEGRO_TIMER **t)
+{
+	TRY(al_init(), "failed to initialise allegro");
+	TRY(al_install_keyboard(), "failed to initialise allegro keyboard");
+	TRY(al_init_font_addon(), "failed to initialise allegro font addon");
+	TRY(al_init_ttf_addon(), "failed to initialise allegro ttf addon");
+	TRY(al_init_image_addon(), "failed to initialise allegro image addon");
+
+	al_set_new_display_flags(ALLEGRO_WINDOWED);
+	al_set_new_window_title("ただのテスト");
+    *d = al_create_display(SCREEN_WIDTH * screen_scale, SCREEN_HEIGHT * screen_scale);
+	TRY(*d != NULL, "failed to create display");
+
+    *f = al_load_font("data/font/efont/BiwidthMedium.ttf", -24, ALLEGRO_TTF_MONOCHROME | ALLEGRO_TTF_NO_AUTOHINT);
+	TRY(*f != NULL, "failed to load font");
+
+    *q = al_create_event_queue();
+	TRY(*q != NULL, "failed to create event queue");
+
+    *t = al_create_timer(1.0 / 30.0);
+	TRY(*t != NULL, "failed to create timer");
+
+    al_register_event_source(*q, al_get_keyboard_event_source());
+    al_register_event_source(*q, al_get_display_event_source(*d));
+    al_register_event_source(*q, al_get_timer_event_source(*t));
+}
+
+int main(int argc, char **argv)
+{
+    ALLEGRO_TIMER *t;
+    ALLEGRO_EVENT_QUEUE *q;
+    ALLEGRO_DISPLAY *d;
+    ALLEGRO_FONT *f;
+    ALLEGRO_EVENT e;
+	ALLEGRO_BITMAP *buf;
+	struct set *s;
+
+	init_resources(&d, &f, &q, &t);
+
+	buf = al_create_bitmap(SCREEN_WIDTH, SCREEN_HEIGHT);
+
+	s = set_load("set", 32, 32, 2);
+
+    al_start_timer(t);
+
+    while (true) {
+        al_wait_for_event(q, &e);
+
+		switch (e.type) {
+		case ALLEGRO_EVENT_TIMER:
+			break;
+
+		case ALLEGRO_EVENT_KEY_DOWN:
+			if (e.keyboard.keycode != ALLEGRO_KEY_Q)
+				continue;
+		case ALLEGRO_EVENT_DISPLAY_CLOSE:
+			goto done;
+
+		default:
+			continue;
+		}
+
+
+		al_set_target_bitmap(buf);
+
+		al_clear_to_color(al_map_rgb(0, 0, 0));
+		al_draw_bitmap(set_at(s, 0)->b, 0, 0, 0);
+		al_draw_text(f, al_map_rgb(255, 255, 255),
+				240, 320,
+				ALLEGRO_ALIGN_CENTRE | ALLEGRO_ALIGN_INTEGER,
+				"マイクチェック");
+
+		al_set_target_backbuffer(d);
+
+		al_draw_scaled_bitmap(buf, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT,
+				0, 0,
+				screen_scale * SCREEN_WIDTH, screen_scale * SCREEN_HEIGHT,
+				0);
+
+		al_flip_display();
+    }
+
+done:
+	al_destroy_bitmap(buf);
+    al_destroy_font(f);
+    al_destroy_display(d);
+    al_destroy_timer(t);
+    al_destroy_event_queue(q);
+	al_uninstall_system();
+
+    return EXIT_SUCCESS;
+}

src/map.h

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+#ifndef GAFU_MAP_H
+#define GAFU_MAP_H
+
+#include "set.h"
+
+struct map_plane {
+	unsigned width;
+	unsigned height;
+	unsigned *plane;
+}
+
+struct map {
+	unsigned set_count;
+	struct set **sets;
+	unsigned plane_count;
+	struct map_plane *planes;
+}
+
+#endif

src/set.c

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+#include "set.h"
+#include "err.h"
+
+#include <assert.h>
+
+struct set* set_load(const char *fname, unsigned tw, unsigned th, unsigned bw)
+{
+	unsigned w, h;
+	unsigned i;
+	unsigned x, y;
+	struct set *s;
+	char buf[1024] = "data/tileset/";
+
+	assert(tw);
+	assert(th);
+	assert(fname);
+
+	TRY(strlen(fname) - 1 < 1006, "bad tileset name");
+	strcpy(buf + 13, fname);
+	strcpy(buf + 13 + strlen(fname), ".png");
+
+	s = malloc(sizeof(*s));
+	assert(s != NULL);
+
+	s->body = al_load_bitmap(buf);
+	TRY(s->body != NULL, "could not load tileset `%s`", fname);
+
+	w = (unsigned)al_get_bitmap_width(s->body);
+	h = (unsigned)al_get_bitmap_height(s->body);
+
+	TRY(w % (tw + bw) == 0, "bad tile width for tileset `%s`", fname);
+	TRY(h % (th + bw) == 0, "bad tile width for tileset `%s`", fname);
+
+	s->tile_count = (w / (tw + bw)) * (h / (th + bw));
+
+	s->tiles = malloc(s->tile_count * sizeof(*(s->tiles)));
+	assert(s->tiles != NULL);
+
+	i = 0;
+	for (y = 0; y < h; y += (th + bw)) {
+		for (x = 0; x < w; x += (tw + bw)) {
+			s->tiles[i].b = al_create_sub_bitmap(s->body, x, y, tw, th);
+			i++;
+		}
+	}
+
+	return s;
+}
+
+struct set_tile* set_at(struct set *s, unsigned n)
+{
+	assert(s != NULL);
+	assert(n < s->tile_count);
+
+	return &(s->tiles[n]);
+}

src/set.h

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+#ifndef	GAFU_SET_H
+#define	GAFU_SET_H
+
+#include <allegro5/allegro.h>
+#include <allegro5/allegro_image.h>
+
+struct set_tile {
+	bool walkable;
+	ALLEGRO_BITMAP *b;
+};
+
+struct set {
+	ALLEGRO_BITMAP *body;
+	unsigned tile_count;
+	struct set_tile *tiles;
+};
+
+struct set* set_load(const char *fname, unsigned tw, unsigned th, unsigned bw);
+
+struct set_tile* set_at(struct set *s, unsigned n);
+
+#endif