From 912fcda40233fd4400e33ee91b0dcedc28b78d98 Mon Sep 17 00:00:00 2001
From: Charlie Stanton <charlie@shtanton.xyz>
Date: Sat, 5 Apr 2025 18:21:28 +0100
Subject: Add a level

---
 src/types.c | 90 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 src/types.c

(limited to 'src/types.c')

diff --git a/src/types.c b/src/types.c
new file mode 100644
index 0000000..fe72e13
--- /dev/null
+++ b/src/types.c
@@ -0,0 +1,90 @@
+#include "all.c"
+
+#define MEM_SIZE (1<<24)
+#define GRIDWIDTH 20
+#define GRIDHEIGHT 16
+#define TICK_LENGTH 200
+
+typedef struct {
+	unsigned char r, g, b, a;
+} Color;
+
+typedef struct {
+	int x, y, w, h;
+	Color fill;
+	Color border;
+} DrawElement;
+
+typedef struct {
+	int len;
+	DrawElement els[2 * GRIDWIDTH * GRIDHEIGHT * 4];
+} DrawList;
+
+typedef struct {
+	char *start;
+	char *end;
+} Arena;
+
+enum {
+	EMPTY,
+	BLACK,
+	RED,
+	YELLOW,
+	RED_UP,
+	RED_DOWN,
+	RED_LEFT,
+	RED_RIGHT,
+	BLUE,
+	BLUE_UP,
+	BLUE_DOWN,
+	BLUE_LEFT,
+	BLUE_RIGHT,
+	N_COLORS,
+};
+
+typedef struct {
+	int width, height;
+} UI;
+
+typedef struct {
+	uint64_t lastTick;
+	char playing;
+	int grid[GRIDWIDTH * GRIDHEIGHT];
+	int goalx, goaly;
+} State;
+
+// Mirror these in src/index.html.in
+enum {
+	INPUT_NONE,
+	INPUT_CLICK,
+	INPUT_RCLICK,
+	INPUT_PAUSE_PLAY,
+};
+
+typedef struct {
+	State state;
+	UI ui;
+	int input;
+	int mousex, mousey;
+} Game;
+
+#define new(a, c, t) ((t *) alloc(a, c, sizeof(t), _Alignof(t)))
+#define affirm(c) while (!(c)) *(volatile int *)0 = 0
+
+static void xmemcpy(void *dst, void *src, ptrdiff_t size) {
+	for (ptrdiff_t i = 0; i < size; i++) {
+		((char *) dst)[i] = ((char *) src)[i];
+	}
+}
+
+static void *alloc(Arena *a, ptrdiff_t count, ptrdiff_t size, ptrdiff_t align) {
+	ptrdiff_t pad = -(size_t) a->start & (align - 1);
+	affirm(count < (a->end - a->start - pad) / size);
+	char *r = a->start + pad;
+	a->start += pad + size * count;
+	for (ptrdiff_t i = 0; i < count * size; i++) {
+		r[i] = 0;
+	}
+
+	return r;
+}
-- 
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