From a365de1b0ab91f9c057196a601d96d2aed6e48fb Mon Sep 17 00:00:00 2001
From: Aleksey Veresov <aleksey@veresov.pro>
Date: Sun, 28 Feb 2021 23:29:25 +0300
Subject: o_O

---
 src/game.c | 111 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 src/game.c

(limited to 'src/game.c')

diff --git a/src/game.c b/src/game.c
new file mode 100644
index 0000000..444f9ff
--- /dev/null
+++ b/src/game.c
@@ -0,0 +1,111 @@
+#include "game.h"
+
+#include <SDL2/SDL.h>
+#include "globals.h"
+
+
+int magic = 0;
+
+static int ticks;
+
+static void step(int d)
+{
+    int xw = ttplayer.xwalk * 137;
+    int yw = ttplayer.ywalk * 137;
+    if (xw || yw) {
+        ttplayer.rem += d;
+    }
+    if (xw && yw) {
+        ttplayer.xrem += (double)(xw * d) / sqrt(2);
+        ttplayer.yrem += (double)(yw * d) / sqrt(2);
+    } else if (xw || yw) {
+        ttplayer.xrem += xw * d;
+        ttplayer.yrem += yw * d;
+    }
+    int x = ttplayer.x;
+    int y = ttplayer.y;
+    ttplayer.x += ttplayer.xrem / 1000;
+    ttplayer.y += ttplayer.yrem / 1000;
+    ttplayer.xrem = ttplayer.xrem % 1000;
+    ttplayer.yrem = ttplayer.yrem % 1000;
+    {
+        SDL_Rect box = { ttplayer.x, ttplayer.y, 32, 32 };
+        int out = tt_room_out(ttplayer.room, &box);
+        if (out) ttplayer.room = ttplayer.room->neighbours[out - 1];
+        if (out == 1)      ttplayer.y = TT_ROOM_H * 32 - 32;
+        else if (out == 2) ttplayer.x = 0;
+        else if (out == 3) ttplayer.y = 0;
+        else if (out == 4) ttplayer.x = TT_ROOM_W * 32 - 32;
+    }
+    {
+        SDL_Rect box = { ttplayer.x, ttplayer.y, 32, 32 };
+        if (tt_room_collide(ttplayer.room, &box)) {
+            ttplayer.x = x;
+            ttplayer.y = y;
+        }
+    }
+    tt_body_move(d);
+    {
+        int i;
+        SDL_Rect box = { ttplayer.x, ttplayer.y, 32, 32 };
+        for (i = 0; i != ttplayer.room->bodies_count; ++i) {
+            tt_body *b = ttplayer.room->bodies + i;
+            SDL_Rect body = { 4 + b->x, 4 + b->y, 24, 24 };
+            if (SDL_HasIntersection(&body, &box)) b->collision_act(b);
+        }
+    }
+}
+
+
+void gotofirstroom()
+{
+    ttplayer.room = ttmap + '0';
+    magic = 0;
+    ticks = SDL_GetTicks();
+}
+
+void tt_mainloop()
+{
+    int keyw, keys, keya, keyd, arru, arrr, arrd, arrl;
+    keyw = keya = keys = keyd = arru = arrr = arrd = arrl = 0;
+    ticks = SDL_GetTicks();
+    int q = 0;
+    while (!q) {
+        SDL_Event e;
+        while (SDL_PollEvent(&e)) {
+            if (e.type == SDL_QUIT) q = 1;
+            else if (e.type == SDL_KEYDOWN) {
+                int code = e.key.keysym.scancode;
+                if (code == SDL_SCANCODE_W)          keyw = 1;
+                else if (code == SDL_SCANCODE_S)     keys = 1;
+                else if (code == SDL_SCANCODE_A)     keya = 1;
+                else if (code == SDL_SCANCODE_D)     keyd = 1;
+                else if (code == SDL_SCANCODE_UP)    arru = 1;
+                else if (code == SDL_SCANCODE_RIGHT) arrr = 1;
+                else if (code == SDL_SCANCODE_DOWN)  arrd = 1;
+                else if (code == SDL_SCANCODE_LEFT)  arrl = 1;
+            } else if (e.type == SDL_KEYUP) {
+                int code = e.key.keysym.scancode;
+                if (code == SDL_SCANCODE_W)          keyw = 0;
+                else if (code == SDL_SCANCODE_S)     keys = 0;
+                else if (code == SDL_SCANCODE_A)     keya = 0;
+                else if (code == SDL_SCANCODE_D)     keyd = 0;
+                else if (code == SDL_SCANCODE_UP)    arru = 0;
+                else if (code == SDL_SCANCODE_RIGHT) arrr = 0;
+                else if (code == SDL_SCANCODE_DOWN)  arrd = 0;
+                else if (code == SDL_SCANCODE_LEFT)  arrl = 0;
+            }
+        }
+        ttplayer.ywalk = (keys | arrd) - (keyw | arru);
+        ttplayer.xwalk = (keyd | arrr) - (keya | arrl);
+        int newticks = SDL_GetTicks();
+        step(newticks - ticks);
+        ticks = newticks;
+        SDL_RenderClear(ttrdr);
+        tt_player_draw();
+        SDL_RenderPresent(ttrdr);
+        if (magic == tt_gotofirstroom) {
+            gotofirstroom();
+        }
+    }
+}
-- 
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