From 086dd28512c9da289bd8c8bc21c95b10c169e8c8 Mon Sep 17 00:00:00 2001
From: Cameron Reikes <cameronreikes@gmail.com>
Date: Fri, 10 Feb 2023 19:54:46 -0800
Subject: [PATCH] Tiled map importing with metadesk, quad view cull

---
 assets.mdesk               |  16 +-
 assets/level0.json         | 125 ++++++++++
 assets/mystery_tile.png    | Bin 0 -> 652 bytes
 assets/testsmalllevel.json |  39 +++
 codegen.c                  | 101 +++++++-
 main.c                     | 149 ++++++++++--
 run_codegen.bat            |   2 +
 thirdparty/jsmn.h          | 471 +++++++++++++++++++++++++++++++++++++
 8 files changed, 871 insertions(+), 32 deletions(-)
 create mode 100644 assets/level0.json
 create mode 100644 assets/mystery_tile.png
 create mode 100644 assets/testsmalllevel.json
 create mode 100644 thirdparty/jsmn.h

diff --git a/assets.mdesk b/assets.mdesk
index d6b6ad9..694a1c5 100644
--- a/assets.mdesk
+++ b/assets.mdesk
@@ -1,12 +1,20 @@
 @image merchant:
 {
-    filepath = "copyrighted/merchant.png",
+    filepath: "copyrighted/merchant.png",
 }
-@image bg_tilesheet:
+@image animated_terrain:
 {
-    filepath = "copyrighted/wall-1 - 3 tiles tall.png",
+    filepath: "copyrighted/animated_terrain.png",
 }
 @image white_square:
 {
-    filepath = "white square.png",
+    filepath: "white square.png",
+}
+@image mystery_tile:
+{
+    filepath: "mystery_tile.png",
+}
+@level level0:
+{
+    filepath: "testsmalllevel.json",
 }
diff --git a/assets/level0.json b/assets/level0.json
new file mode 100644
index 0000000..da132cb
--- /dev/null
+++ b/assets/level0.json
@@ -0,0 +1,125 @@
+{ "compressionlevel":-1,
+ "height":60,
+ "infinite":false,
+ "layers":[
+        {
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+         "id":4,
+         "name":"Animated Tiles1",
+         "opacity":1,
+         "type":"tilelayer",
+         "visible":true,
+         "width":60,
+         "x":0,
+         "y":0
+        }, 
+        {
+         "draworder":"topdown",
+         "id":5,
+         "name":"objects",
+         "objects":[
+                {
+                 "class":"",
+                 "height":32,
+                 "id":1,
+                 "name":"spawn",
+                 "rotation":0,
+                 "visible":true,
+                 "width":32,
+                 "x":960,
+                 "y":928
+                }],
+         "opacity":1,
+         "type":"objectgroup",
+         "visible":true,
+         "x":0,
+         "y":0
+        }],
+ "nextlayerid":6,
+ "nextobjectid":2,
+ "orientation":"orthogonal",
+ "renderorder":"right-down",
+ "tiledversion":"1.9.2",
+ "tileheight":32,
+ "tilesets":[
+        {
+         "firstgid":1,
+         "source":"..\/EPIC RPG World Pack - Ancient Ruins V 1.7\/EPIC RPG World Pack - Ancient Ruins V 1.7\/TiledMap Editor\/Ancient Ruins-Animated Terrains-16 frames.tsx"
+        }, 
+        {
+         "firstgid":2341,
+         "source":"..\/EPIC RPG World Pack - Ancient Ruins V 1.7\/EPIC RPG World Pack - Ancient Ruins V 1.7\/TiledMap Editor\/Ancient Ruins-Tileset-wall-1.tsx"
+        }, 
+        {
+         "firstgid":2469,
+         "source":"..\/EPIC RPG World Pack - Ancient Ruins V 1.7\/EPIC RPG World Pack - Ancient Ruins V 1.7\/TiledMap Editor\/Ancient Ruins-Tileset-wall-2.tsx"
+        }, 
+        {
+         "firstgid":2597,
+         "source":"..\/EPIC RPG World Pack - Ancient Ruins V 1.7\/EPIC RPG World Pack - Ancient Ruins V 1.7\/TiledMap Editor\/Terrain - Ancient Ruins.tsx"
+        }],
+ "tilewidth":32,
+ "type":"map",
+ "version":"1.9",
+ "width":60
+}
\ No newline at end of file
diff --git a/assets/mystery_tile.png b/assets/mystery_tile.png
new file mode 100644
index 0000000000000000000000000000000000000000..837e4658d75f81cc1c11907adc5016eedb04fa6a
GIT binary patch
literal 652
zcmV;70(1R|P)<h;3K|Lk000e1NJLTq001BW001Be1^@s6b9#F80004nX+uL$Nkc;*
zaB^>EX>4Tx04R}tkv&MmKpe$iQ^gM|4ptCx$WWauh)NM$q>4qbP}&NuI+$Gg1x*@~
z6c<Oqwcy~#V%5RLSyu;FK@j`^admN0bdeJOmlRsWcyQd0clRE5?*O4*W~$jS0jQc~
zBx6xAlU)_NULl|dgP27`Vx}HXEvDf)zV6}U>s^><d7t}p^eH)$0X~s<j_HO)yg?k<
zv~<q<#6eb+6ykH@af2>M{K$3L<u}d+hXtM)G}6g=;vlhDXk)pJS<z65r-?&~s!_g>
zaarNK#aS&^S@WL!g@K&5lHxke5yY^BI1&&cqlyyBun?wIBgI6L_M;yDVaJ~!mrSk_
z7&#VDfeOj-ga5(rZq5AEq?;6o0-Z0m{V@u3?E;OOZGRuzcH;!_KLb}<%U`JjGoPf_
zT3YA`=-&n|u3MVC2VCv|Lr=P7NRH&EDdh9O`x$*x78tk%de_|En)^6?0MgXe@(pls
z2#ggdd)?#R-R-^od#2gn5Bs8W-Zen4m;e9(32;bRa{vGf6951U69E94oEQKA00(qQ
zO+^Ri0t*8i8gmCvg#Z8mnn^@KR9M69mOBo>AP7K}n7FkE@cu{h0FF-WWa3aG1dybG
z(I7ne8n0ZQU?>ob#R1F#67@ps_4EABMGs(hx^gshs339IhOJkUQK~*j8XFN<rHKSU
zF~Wg>ogr-q)i%UHfX3_pJ%}*HI--ZEfh3jd83;4DL;*Op<J(XKfHO7Wbk51!&}+a)
mG54!>Bm$gH@GfuwbAT6^UN~nLes{nC0000<MNUMnLSTZ*HyfA$

literal 0
HcmV?d00001

diff --git a/assets/testsmalllevel.json b/assets/testsmalllevel.json
new file mode 100644
index 0000000..1dd1a80
--- /dev/null
+++ b/assets/testsmalllevel.json
@@ -0,0 +1,39 @@
+{ "compressionlevel":-1,
+ "height":8,
+ "infinite":false,
+ "layers":[
+        {
+         "data":[0, 0, 0, 0, 0, 0, 0, 0,
+            0, 0, 53, 0, 0, 53, 0, 0,
+            0, 0, 53, 0, 0, 53, 0, 0,
+            0, 0, 53, 0, 0, 53, 0, 0,
+            0, 0, 0, 0, 0, 0, 0, 0,
+            0, 53, 0, 0, 0, 0, 0, 0,
+            0, 53, 53, 53, 53, 53, 53, 0,
+            0, 0, 0, 0, 0, 0, 0, 0],
+         "height":8,
+         "id":1,
+         "name":"Tile Layer 1",
+         "opacity":1,
+         "type":"tilelayer",
+         "visible":true,
+         "width":8,
+         "x":0,
+         "y":0
+        }],
+ "nextlayerid":2,
+ "nextobjectid":1,
+ "orientation":"orthogonal",
+ "renderorder":"right-down",
+ "tiledversion":"1.9.2",
+ "tileheight":32,
+ "tilesets":[
+        {
+         "firstgid":1,
+         "source":"..\/EPIC RPG World Pack - Ancient Ruins V 1.7\/EPIC RPG World Pack - Ancient Ruins V 1.7\/TiledMap Editor\/Ancient Ruins-Animated Terrains-16 frames.tsx"
+        }],
+ "tilewidth":32,
+ "type":"map",
+ "version":"1.9",
+ "width":8
+}
\ No newline at end of file
diff --git a/codegen.c b/codegen.c
index 20bb202..02a7822 100644
--- a/codegen.c
+++ b/codegen.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
+#include <stdbool.h>
 
-#define assert(cond, explanation) { if(!cond) { printf("Codegen assertion %s failed: %.*s\n", #cond, MD_S8VArg(explanation)); exit(1); } }
+#define assert(cond, explanation) { if(!cond) { printf("Codegen assertion line %d %s failed: %.*s\n", __LINE__, #cond, MD_S8VArg(explanation)); __debugbreak(); exit(1); } }
 
 #pragma warning(disable : 4996) // nonsense about fopen being insecure
 
@@ -11,6 +12,8 @@
 #include "md.c"
 #pragma warning(pop)
 
+#include "jsmn.h"
+
 
 MD_String8 OUTPUT_FOLDER = MD_S8LitComp("gen"); // no trailing slash
 MD_String8 ASSETS_FOLDER = MD_S8LitComp("assets");
@@ -37,8 +40,51 @@ void dump(MD_ParseResult parse) {
     }
 }
 
+MD_Arena *cg_arena = NULL;
+
+static bool jsoneq(const char *json, jsmntok_t *tok, const char *s) {
+  if (tok->type == JSMN_STRING && (int)strlen(s) == tok->end - tok->start &&
+      strncmp(json + tok->start, s, tok->end - tok->start) == 0) {
+    return true;
+  }
+  return false;
+}
+
+static int getint(const char *json, jsmntok_t *tok) {
+    assert(tok->type == JSMN_PRIMITIVE, MD_S8Lit("not primitive"));
+    char tmp[256] = {0};
+    strncpy(tmp, json + tok->start, tok->end - tok->start);
+    return atoi(tmp);
+}
+
+// will look over into random memory if can't find...
+static int getnextofname(const char *json, jsmntok_t *starting_at, const char *name) {
+    jsmntok_t *cur = starting_at;
+    // max lookahead, bad
+    for(int i = 0; i < 1024*10; i++) {
+        if(jsoneq(json, cur, name)) {
+            return getint(json, cur+1);
+        }
+        cur++;
+    }
+    assert(false, MD_S8Fmt(cg_arena, "Could not find integer for %s\n", name));
+    return -1;
+}
+
+
+MD_String8 ChildValue(MD_Node *n, MD_String8 name) {
+    MD_Node *child_with_value = MD_ChildFromString(n, name, 0);
+    assert(child_with_value, MD_S8Fmt(cg_arena, "Could not find child named '%.*s' of node '%.*s'", MD_S8VArg(name), MD_S8VArg(n->string)));
+    assert(child_with_value->first_child, MD_S8Lit("Must have child"));
+    return child_with_value->first_child->string;
+}
+
+MD_String8 asset_file_path(MD_String8 filename) {
+    return MD_S8Fmt(cg_arena, "%.*s/%.*s", MD_S8VArg(ASSETS_FOLDER), MD_S8VArg(filename));
+}
+
 int main(int argc, char **argv) {
-    MD_Arena *cg_arena = MD_ArenaAlloc();
+    cg_arena = MD_ArenaAlloc();
     assert(cg_arena, MD_S8Lit("Memory"));
 
     // I hope to God MD_String8's are null terminated...
@@ -52,17 +98,13 @@ int main(int argc, char **argv) {
 
     MD_String8List declarations_list = {0};
     MD_String8List load_list = {0};
+    MD_String8List level_decl_list = {0};
     for(MD_EachNode(node, parse.node->first_child)) {
         if(MD_S8Match(node->first_tag->string, MD_S8Lit("image"), 0)) {
             MD_String8 variable_name = MD_S8Fmt(cg_arena, "image_%.*s", MD_S8VArg(node->string));
             log("New image variable %.*s\n", MD_S8VArg(variable_name));
-            MD_String8 filepath = {0};
-            for(MD_EachNode(child, node->first_child)) {
-                if(MD_S8Match(child->string, MD_S8Lit("filepath"), 0)) {
-                    filepath = child->next->next->string; // segfault here but to check for it is ugly
-                }
-            }
-            filepath = MD_S8Fmt(cg_arena, "%.*s/%.*s", MD_S8VArg(ASSETS_FOLDER), MD_S8VArg(filepath));
+            MD_String8 filepath = ChildValue(node, MD_S8Lit("filepath"));
+            filepath = asset_file_path(filepath);
             assert(filepath.str != 0, MD_S8Fmt(cg_arena, "No filepath specified for image '%.*s'", MD_S8VArg(node->string)));
             FILE *asset_file = fopen(filepath.str, "r");
             assert(asset_file, MD_S8Fmt(cg_arena, "Could not open filepath %.*s for asset '%.*s'", MD_S8VArg(filepath), MD_S8VArg(node->string)));
@@ -71,6 +113,47 @@ int main(int argc, char **argv) {
             MD_S8ListPush(cg_arena, &declarations_list, MD_S8Fmt(cg_arena, "sg_image %.*s = {0};\n", MD_S8VArg(variable_name)));
             MD_S8ListPush(cg_arena, &load_list, MD_S8Fmt(cg_arena, "%.*s = load_image(\"%.*s\");\n", MD_S8VArg(variable_name), MD_S8VArg(filepath)));
         }
+        if(MD_S8Match(node->first_tag->string, MD_S8Lit("level"), 0)) {
+            MD_String8 variable_name = MD_S8Fmt(cg_arena, "level_%.*s", MD_S8VArg(node->string));
+            MD_String8 filepath = asset_file_path(ChildValue(node, MD_S8Lit("filepath")));
+            MD_String8 level_file_contents = MD_LoadEntireFile(cg_arena, filepath);
+            assert(level_file_contents.str != 0 && level_file_contents.size > 1, MD_S8Lit("Failed to load level file"));
+            jsmn_parser p;
+            jsmntok_t t[1024*5];
+            jsmn_init(&p);
+            const char *json_string = level_file_contents.str;
+            int r = jsmn_parse(&p, json_string, level_file_contents.size, t, sizeof(t) / sizeof(t[0]));
+            assert(r > 0, MD_S8Lit("Failed to parse json"));
+
+            int layer_obj_token = 0;
+            fprintf(output, "Level %.*s = {\n.tiles = {\n", MD_S8VArg(variable_name));
+            // this code is absolutely disgusting but I think it's fine because this is meta code, I guess time will tell if this needs to be cleaner or not... sorry future self!
+            for(int i = 0; i < r; i++) {
+                if(jsoneq(json_string, &t[i], "data")) {
+                    jsmntok_t *arr = &t[i+1];
+                    assert(arr->type == JSMN_ARRAY, MD_S8Lit("Expected array after data"));
+                    int width = getnextofname(json_string, &t[i+1], "width");
+                    int height = getnextofname(json_string, &t[i+1], "height");
+
+                    fprintf(output, "{ ");
+                    int last_token_index = i + 2 + arr->size;
+                    for(int ii = i + 2; ii < last_token_index; ii++) {
+                        jsmntok_t *num_to_add = &t[ii];
+                        assert(num_to_add->type == JSMN_PRIMITIVE, MD_S8Lit("not a number"));
+                        int num_index = ii - (i + 2);
+                        fprintf(output, "%.*s, ", num_to_add->end - num_to_add->start, json_string + num_to_add->start);
+                        if(num_index % width == width - 1) {
+                            if(ii == last_token_index - 1) {
+                                fprintf(output, "},\n}\n}; // %.*s\n", MD_S8VArg(variable_name));
+                            } else {
+                                fprintf(output, "},\n{ ");
+                            }
+                        }
+                    }
+                }
+            }
+
+        }
     }
 
     MD_StringJoin join = MD_ZERO_STRUCT;
diff --git a/main.c b/main.c
index 7f1571c..836b421 100644
--- a/main.c
+++ b/main.c
@@ -12,6 +12,32 @@
 
 #include <math.h>
 
+typedef struct AABB {
+    HMM_Vec2 upper_left;
+    HMM_Vec2 lower_right;
+} AABB;
+
+typedef struct TileInstance {
+    uint16_t kind;
+} TileInstance;
+
+typedef struct TileInfo {
+    uint16_t kind;
+    int num_frames;
+    AABB regions[32];
+    sg_image *img;
+} TileInfo;
+
+#define LEVEL_TILES 60
+#define TILE_SIZE 32 // in pixels
+typedef struct Level {
+    TileInstance tiles[LEVEL_TILES][LEVEL_TILES];
+} Level;
+
+HMM_Vec2 tilecoord_to_world(int x, int y) {
+    return HMM_V2( (float)x * (float)TILE_SIZE * 1.0f, -(float)y * (float)TILE_SIZE * 1.0f );
+}
+
 sg_image load_image(const char *path) {
     sg_image to_return = {0};
 
@@ -22,7 +48,7 @@ sg_image load_image(const char *path) {
         &png_width, &png_height,
         &num_channels, 0);
     assert(pixels);
-    to_return = sg_make_image(&(sg_image_desc){
+    to_return = sg_make_image(&(sg_image_desc) {
         .width = png_width,
         .height = png_height,
         .pixel_format = SG_PIXELFORMAT_RGBA8,
@@ -40,6 +66,20 @@ sg_image load_image(const char *path) {
 #include "quad-sapp.glsl.h"
 #include "assets.gen.c"
 
+TileInfo tiles[] = {
+    {
+        .kind = 53,
+        .num_frames = 1,
+        .regions[0] = { 0, 32, 32, 64 },
+        .img = &image_animated_terrain,
+    },
+};
+TileInfo mystery_tile = {
+    .img = &image_mystery_tile,
+    .num_frames = 1,
+    .regions[0] = { 0, 0, 32, 32 },
+};
+
 // so can be grep'd and removed
 #define dbgprint(...) { printf("Debug | %s:%d | ", __FILE__, __LINE__); printf(__VA_ARGS__); }
 
@@ -60,7 +100,7 @@ void init(void) {
     state.bind.vertex_buffers[0] = sg_make_buffer(&(sg_buffer_desc){
         .usage = SG_USAGE_STREAM,
         //.data = SG_RANGE(vertices),
-        .size = 1024,
+        .size = 1024*500,
         .label = "quad-vertices"
     });
 
@@ -97,21 +137,14 @@ void init(void) {
     });
 
     state.pass_action = (sg_pass_action) {
-        .colors[0] = { .action=SG_ACTION_CLEAR, .value={0.0f, 0.0f, 0.0f, 1.0f } }
+        .colors[0] = { .action=SG_ACTION_CLEAR, .value={1.0f, 1.0f, 1.0f, 1.0f } }
     };
 }
-typedef struct AABB {
-    HMM_Vec2 upper_left;
-    HMM_Vec2 lower_right;
-} AABB;
 
 typedef HMM_Vec4 Color;
 
-Color col(float r, float g, float b, float a) {
-    return HMM_V4(r, g, b, a);
-}
 
-#define WHITE col(1.0f, 1.0f, 1.0f, 1.0f)
+#define WHITE (Color){1.0f, 1.0f, 1.0f, 1.0f}
 
 HMM_Vec2 screen_size() {
     return HMM_V2((float)sapp_width(), (float)sapp_height());
@@ -132,7 +165,7 @@ HMM_Vec2 cam_offset() {
     return HMM_AddV2(cam.pos, HMM_MulV2F(screen_size(), 0.5f));
 }
 
-// screen coords are in bottom right, and in pixels
+// screen coords are in pixels counting from bottom left as (0,0), Y+ is up
 HMM_Vec2 world_to_screen(HMM_Vec2 world) {
     HMM_Vec2 to_return = world;
     to_return = HMM_MulV2F(to_return, cam.scale);
@@ -148,21 +181,80 @@ HMM_Vec2 screen_to_world(HMM_Vec2 screen) {
 }
 
 // out must be of at least length 4
-void quad_points_centered_size(HMM_Vec2 *out, HMM_Vec2 at, HMM_Vec2 size) {
+void quad_points_corner_size(HMM_Vec2 *out, HMM_Vec2 at, HMM_Vec2 size) {
     out[0] = HMM_V2(0.0, 0.0);
     out[1] = HMM_V2(size.X, 0.0);
     out[2] = HMM_V2(size.X, -size.Y);
     out[3] = HMM_V2(0.0, -size.Y);
 
     for(int i = 0; i < 4; i++) {
-        out[i] = HMM_AddV2(out[i], HMM_V2(-size.X*0.5f, size.Y*0.5f));
         out[i] = HMM_AddV2(out[i], at);
     }
 }
 
+// out must be of at least length 4
+void quad_points_centered_size(HMM_Vec2 *out, HMM_Vec2 at, HMM_Vec2 size) {
+    quad_points_corner_size(out, at, size);
+    for(int i = 0; i < 4; i++) {
+        out[i] = HMM_AddV2(out[i], HMM_V2(-size.X*0.5f, size.Y*0.5f));
+    }
+}
+
+// both segment_a and segment_b must be arrays of length 2
+bool segments_overlapping(float *a_segment, float *b_segment) {
+    assert(a_segment[1] >= a_segment[0]);
+    assert(b_segment[1] >= b_segment[0]);
+    float total_length = (a_segment[1] - a_segment[0]) + (b_segment[1] - b_segment[0]);
+    float farthest_to_left = min(a_segment[0], b_segment[0]);
+    float farthest_to_right = max(a_segment[1], b_segment[1]);
+    if (farthest_to_right - farthest_to_left < total_length) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+bool overlapping(AABB a, AABB b) {
+    // x axis
+    {
+        float a_segment[2] = { a.upper_left.X, a.lower_right.X };
+        float b_segment[2] = { b.upper_left.X, b.lower_right.X };
+        if(segments_overlapping(a_segment, b_segment)) {
+        } else {
+            return false;
+        }
+    }
+
+    // y axis
+    {
+        float a_segment[2] = { a.lower_right.Y, a.upper_left.Y };
+        float b_segment[2] = { b.lower_right.Y, b.upper_left.Y };
+        if(segments_overlapping(a_segment, b_segment)) {
+        } else {
+            return false;
+        }
+    }
+
+    return true; // both segments overlapping
+}
+
 // points must be of length 4, and be in the order: upper left, upper right, lower right, lower left
 // the points are in pixels in screen space. The image region is in pixel space of the image
 void draw_quad_all_parameters(HMM_Vec2 *points, sg_image image, AABB image_region, Color tint) {
+    AABB cam_aabb = { .upper_left = HMM_V2(0.0, screen_size().Y), .lower_right = HMM_V2(screen_size().X, 0.0) };
+    AABB points_bounding_box = { .upper_left = HMM_V2(INFINITY, -INFINITY), .lower_right = HMM_V2(-INFINITY, INFINITY) };
+
+    for(int i = 0; i < 4; i++) {
+        points_bounding_box.upper_left.X = min(points_bounding_box.upper_left.X, points[i].X);
+        points_bounding_box.upper_left.Y = max(points_bounding_box.upper_left.Y, points[i].Y);
+
+        points_bounding_box.lower_right.X = max(points_bounding_box.lower_right.X, points[i].X);
+        points_bounding_box.lower_right.Y = min(points_bounding_box.lower_right.Y, points[i].Y);
+    }
+    if(!overlapping(cam_aabb, points_bounding_box)) {
+        return; // cull out of screen quads
+    }
+
     float new_vertices[ (2 + 2)*4 ];
     HMM_Vec2 region_size = HMM_SubV2(image_region.lower_right, image_region.upper_left);
     assert(region_size.X > 0.0);
@@ -258,10 +350,29 @@ void frame(void) {
     sg_begin_default_pass(&state.pass_action, sapp_width(), sapp_height());
     sg_apply_pipeline(state.pip);
 
-    // background
-    HMM_Vec2 bg_points[4] = {0};
-    quad_points_centered_size(bg_points, HMM_V2(0.0, 0.0), img_size(image_bg_tilesheet));
-    draw_quad_world_all(bg_points, image_bg_tilesheet, full_region(image_bg_tilesheet), WHITE);
+    // tilemap
+#if 1
+    Level * cur_level = &level_level0;
+    for(int row = 0; row < LEVEL_TILES; row++) {
+        for(int col = 0; col < LEVEL_TILES; col++)
+        {
+            TileInstance cur = cur_level->tiles[row][col];
+            if(cur.kind != 0){
+                HMM_Vec2 points[4] = {0};
+                quad_points_corner_size(points, tilecoord_to_world(col, row), HMM_V2(TILE_SIZE, TILE_SIZE));
+                TileInfo *info = NULL;
+                for(int i = 0; i < sizeof(tiles)/sizeof(*tiles); i++) {
+                    if(tiles[i].kind == cur.kind) {
+                        info = &tiles[i];
+                        break;
+                    }
+                }
+                if(info == NULL) info = &mystery_tile;
+                draw_quad_world_all(points, *info->img, info->regions[0], WHITE);
+            }
+        }
+    }
+#endif
 
     // merchant
     int index = (int)floor(time/0.3);
@@ -319,7 +430,7 @@ sapp_desc sokol_main(int argc, char* argv[]) {
         .event_cb = event,
         .width = 800,
         .height = 600,
-        .gl_force_gles2 = true,
+        //.gl_force_gles2 = true, not sure why this was here in example, look into
         .window_title = "RPGPT",
 
         .win32_console_attach = true,
diff --git a/run_codegen.bat b/run_codegen.bat
index 14211bd..f3349b1 100644
--- a/run_codegen.bat
+++ b/run_codegen.bat
@@ -7,6 +7,7 @@ rmdir /S /q assets\copyrighted
 mkdir assets\copyrighted
 copy "EPIC RPG World Pack - Ancient Ruins V 1.7\EPIC RPG World Pack - Ancient Ruins V 1.7\Characters\NPC Merchant-idle.png" "assets\copyrighted\merchant.png" || goto :error
 copy "EPIC RPG World Pack - Ancient Ruins V 1.7\EPIC RPG World Pack - Ancient Ruins V 1.7\Tilesets\wall-1 - 3 tiles tall.png" "assets\copyrighted\wall-1 - 3 tiles tall.png" || goto :error
+copy "EPIC RPG World Pack - Ancient Ruins V 1.7\EPIC RPG World Pack - Ancient Ruins V 1.7\Tilesets\Tileset-Animated Terrains-16 frames.png" "assets\copyrighted\animated_terrain.png" || goto :error
 
 rmdir /S /q gen
 mkdir gen
@@ -21,4 +22,5 @@ codegen || goto :error
 goto :EOF
 
 :error
+echo Codegen failed
 exit /B %ERRORLEVEL%
diff --git a/thirdparty/jsmn.h b/thirdparty/jsmn.h
new file mode 100644
index 0000000..8ac14c1
--- /dev/null
+++ b/thirdparty/jsmn.h
@@ -0,0 +1,471 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2010 Serge Zaitsev
+ *
+ * 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.
+ */
+#ifndef JSMN_H
+#define JSMN_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef JSMN_STATIC
+#define JSMN_API static
+#else
+#define JSMN_API extern
+#endif
+
+/**
+ * JSON type identifier. Basic types are:
+ * 	o Object
+ * 	o Array
+ * 	o String
+ * 	o Other primitive: number, boolean (true/false) or null
+ */
+typedef enum {
+  JSMN_UNDEFINED = 0,
+  JSMN_OBJECT = 1 << 0,
+  JSMN_ARRAY = 1 << 1,
+  JSMN_STRING = 1 << 2,
+  JSMN_PRIMITIVE = 1 << 3
+} jsmntype_t;
+
+enum jsmnerr {
+  /* Not enough tokens were provided */
+  JSMN_ERROR_NOMEM = -1,
+  /* Invalid character inside JSON string */
+  JSMN_ERROR_INVAL = -2,
+  /* The string is not a full JSON packet, more bytes expected */
+  JSMN_ERROR_PART = -3
+};
+
+/**
+ * JSON token description.
+ * type		type (object, array, string etc.)
+ * start	start position in JSON data string
+ * end		end position in JSON data string
+ */
+typedef struct jsmntok {
+  jsmntype_t type;
+  int start;
+  int end;
+  int size;
+#ifdef JSMN_PARENT_LINKS
+  int parent;
+#endif
+} jsmntok_t;
+
+/**
+ * JSON parser. Contains an array of token blocks available. Also stores
+ * the string being parsed now and current position in that string.
+ */
+typedef struct jsmn_parser {
+  unsigned int pos;     /* offset in the JSON string */
+  unsigned int toknext; /* next token to allocate */
+  int toksuper;         /* superior token node, e.g. parent object or array */
+} jsmn_parser;
+
+/**
+ * Create JSON parser over an array of tokens
+ */
+JSMN_API void jsmn_init(jsmn_parser *parser);
+
+/**
+ * Run JSON parser. It parses a JSON data string into and array of tokens, each
+ * describing
+ * a single JSON object.
+ */
+JSMN_API int jsmn_parse(jsmn_parser *parser, const char *js, const size_t len,
+                        jsmntok_t *tokens, const unsigned int num_tokens);
+
+#ifndef JSMN_HEADER
+/**
+ * Allocates a fresh unused token from the token pool.
+ */
+static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser, jsmntok_t *tokens,
+                                   const size_t num_tokens) {
+  jsmntok_t *tok;
+  if (parser->toknext >= num_tokens) {
+    return NULL;
+  }
+  tok = &tokens[parser->toknext++];
+  tok->start = tok->end = -1;
+  tok->size = 0;
+#ifdef JSMN_PARENT_LINKS
+  tok->parent = -1;
+#endif
+  return tok;
+}
+
+/**
+ * Fills token type and boundaries.
+ */
+static void jsmn_fill_token(jsmntok_t *token, const jsmntype_t type,
+                            const int start, const int end) {
+  token->type = type;
+  token->start = start;
+  token->end = end;
+  token->size = 0;
+}
+
+/**
+ * Fills next available token with JSON primitive.
+ */
+static int jsmn_parse_primitive(jsmn_parser *parser, const char *js,
+                                const size_t len, jsmntok_t *tokens,
+                                const size_t num_tokens) {
+  jsmntok_t *token;
+  int start;
+
+  start = parser->pos;
+
+  for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+    switch (js[parser->pos]) {
+#ifndef JSMN_STRICT
+    /* In strict mode primitive must be followed by "," or "}" or "]" */
+    case ':':
+#endif
+    case '\t':
+    case '\r':
+    case '\n':
+    case ' ':
+    case ',':
+    case ']':
+    case '}':
+      goto found;
+    default:
+                   /* to quiet a warning from gcc*/
+      break;
+    }
+    if (js[parser->pos] < 32 || js[parser->pos] >= 127) {
+      parser->pos = start;
+      return JSMN_ERROR_INVAL;
+    }
+  }
+#ifdef JSMN_STRICT
+  /* In strict mode primitive must be followed by a comma/object/array */
+  parser->pos = start;
+  return JSMN_ERROR_PART;
+#endif
+
+found:
+  if (tokens == NULL) {
+    parser->pos--;
+    return 0;
+  }
+  token = jsmn_alloc_token(parser, tokens, num_tokens);
+  if (token == NULL) {
+    parser->pos = start;
+    return JSMN_ERROR_NOMEM;
+  }
+  jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
+#ifdef JSMN_PARENT_LINKS
+  token->parent = parser->toksuper;
+#endif
+  parser->pos--;
+  return 0;
+}
+
+/**
+ * Fills next token with JSON string.
+ */
+static int jsmn_parse_string(jsmn_parser *parser, const char *js,
+                             const size_t len, jsmntok_t *tokens,
+                             const size_t num_tokens) {
+  jsmntok_t *token;
+
+  int start = parser->pos;
+  
+  /* Skip starting quote */
+  parser->pos++;
+  
+  for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+    char c = js[parser->pos];
+
+    /* Quote: end of string */
+    if (c == '\"') {
+      if (tokens == NULL) {
+        return 0;
+      }
+      token = jsmn_alloc_token(parser, tokens, num_tokens);
+      if (token == NULL) {
+        parser->pos = start;
+        return JSMN_ERROR_NOMEM;
+      }
+      jsmn_fill_token(token, JSMN_STRING, start + 1, parser->pos);
+#ifdef JSMN_PARENT_LINKS
+      token->parent = parser->toksuper;
+#endif
+      return 0;
+    }
+
+    /* Backslash: Quoted symbol expected */
+    if (c == '\\' && parser->pos + 1 < len) {
+      int i;
+      parser->pos++;
+      switch (js[parser->pos]) {
+      /* Allowed escaped symbols */
+      case '\"':
+      case '/':
+      case '\\':
+      case 'b':
+      case 'f':
+      case 'r':
+      case 'n':
+      case 't':
+        break;
+      /* Allows escaped symbol \uXXXX */
+      case 'u':
+        parser->pos++;
+        for (i = 0; i < 4 && parser->pos < len && js[parser->pos] != '\0';
+             i++) {
+          /* If it isn't a hex character we have an error */
+          if (!((js[parser->pos] >= 48 && js[parser->pos] <= 57) ||   /* 0-9 */
+                (js[parser->pos] >= 65 && js[parser->pos] <= 70) ||   /* A-F */
+                (js[parser->pos] >= 97 && js[parser->pos] <= 102))) { /* a-f */
+            parser->pos = start;
+            return JSMN_ERROR_INVAL;
+          }
+          parser->pos++;
+        }
+        parser->pos--;
+        break;
+      /* Unexpected symbol */
+      default:
+        parser->pos = start;
+        return JSMN_ERROR_INVAL;
+      }
+    }
+  }
+  parser->pos = start;
+  return JSMN_ERROR_PART;
+}
+
+/**
+ * Parse JSON string and fill tokens.
+ */
+JSMN_API int jsmn_parse(jsmn_parser *parser, const char *js, const size_t len,
+                        jsmntok_t *tokens, const unsigned int num_tokens) {
+  int r;
+  int i;
+  jsmntok_t *token;
+  int count = parser->toknext;
+
+  for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+    char c;
+    jsmntype_t type;
+
+    c = js[parser->pos];
+    switch (c) {
+    case '{':
+    case '[':
+      count++;
+      if (tokens == NULL) {
+        break;
+      }
+      token = jsmn_alloc_token(parser, tokens, num_tokens);
+      if (token == NULL) {
+        return JSMN_ERROR_NOMEM;
+      }
+      if (parser->toksuper != -1) {
+        jsmntok_t *t = &tokens[parser->toksuper];
+#ifdef JSMN_STRICT
+        /* In strict mode an object or array can't become a key */
+        if (t->type == JSMN_OBJECT) {
+          return JSMN_ERROR_INVAL;
+        }
+#endif
+        t->size++;
+#ifdef JSMN_PARENT_LINKS
+        token->parent = parser->toksuper;
+#endif
+      }
+      token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
+      token->start = parser->pos;
+      parser->toksuper = parser->toknext - 1;
+      break;
+    case '}':
+    case ']':
+      if (tokens == NULL) {
+        break;
+      }
+      type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
+#ifdef JSMN_PARENT_LINKS
+      if (parser->toknext < 1) {
+        return JSMN_ERROR_INVAL;
+      }
+      token = &tokens[parser->toknext - 1];
+      for (;;) {
+        if (token->start != -1 && token->end == -1) {
+          if (token->type != type) {
+            return JSMN_ERROR_INVAL;
+          }
+          token->end = parser->pos + 1;
+          parser->toksuper = token->parent;
+          break;
+        }
+        if (token->parent == -1) {
+          if (token->type != type || parser->toksuper == -1) {
+            return JSMN_ERROR_INVAL;
+          }
+          break;
+        }
+        token = &tokens[token->parent];
+      }
+#else
+      for (i = parser->toknext - 1; i >= 0; i--) {
+        token = &tokens[i];
+        if (token->start != -1 && token->end == -1) {
+          if (token->type != type) {
+            return JSMN_ERROR_INVAL;
+          }
+          parser->toksuper = -1;
+          token->end = parser->pos + 1;
+          break;
+        }
+      }
+      /* Error if unmatched closing bracket */
+      if (i == -1) {
+        return JSMN_ERROR_INVAL;
+      }
+      for (; i >= 0; i--) {
+        token = &tokens[i];
+        if (token->start != -1 && token->end == -1) {
+          parser->toksuper = i;
+          break;
+        }
+      }
+#endif
+      break;
+    case '\"':
+      r = jsmn_parse_string(parser, js, len, tokens, num_tokens);
+      if (r < 0) {
+        return r;
+      }
+      count++;
+      if (parser->toksuper != -1 && tokens != NULL) {
+        tokens[parser->toksuper].size++;
+      }
+      break;
+    case '\t':
+    case '\r':
+    case '\n':
+    case ' ':
+      break;
+    case ':':
+      parser->toksuper = parser->toknext - 1;
+      break;
+    case ',':
+      if (tokens != NULL && parser->toksuper != -1 &&
+          tokens[parser->toksuper].type != JSMN_ARRAY &&
+          tokens[parser->toksuper].type != JSMN_OBJECT) {
+#ifdef JSMN_PARENT_LINKS
+        parser->toksuper = tokens[parser->toksuper].parent;
+#else
+        for (i = parser->toknext - 1; i >= 0; i--) {
+          if (tokens[i].type == JSMN_ARRAY || tokens[i].type == JSMN_OBJECT) {
+            if (tokens[i].start != -1 && tokens[i].end == -1) {
+              parser->toksuper = i;
+              break;
+            }
+          }
+        }
+#endif
+      }
+      break;
+#ifdef JSMN_STRICT
+    /* In strict mode primitives are: numbers and booleans */
+    case '-':
+    case '0':
+    case '1':
+    case '2':
+    case '3':
+    case '4':
+    case '5':
+    case '6':
+    case '7':
+    case '8':
+    case '9':
+    case 't':
+    case 'f':
+    case 'n':
+      /* And they must not be keys of the object */
+      if (tokens != NULL && parser->toksuper != -1) {
+        const jsmntok_t *t = &tokens[parser->toksuper];
+        if (t->type == JSMN_OBJECT ||
+            (t->type == JSMN_STRING && t->size != 0)) {
+          return JSMN_ERROR_INVAL;
+        }
+      }
+#else
+    /* In non-strict mode every unquoted value is a primitive */
+    default:
+#endif
+      r = jsmn_parse_primitive(parser, js, len, tokens, num_tokens);
+      if (r < 0) {
+        return r;
+      }
+      count++;
+      if (parser->toksuper != -1 && tokens != NULL) {
+        tokens[parser->toksuper].size++;
+      }
+      break;
+
+#ifdef JSMN_STRICT
+    /* Unexpected char in strict mode */
+    default:
+      return JSMN_ERROR_INVAL;
+#endif
+    }
+  }
+
+  if (tokens != NULL) {
+    for (i = parser->toknext - 1; i >= 0; i--) {
+      /* Unmatched opened object or array */
+      if (tokens[i].start != -1 && tokens[i].end == -1) {
+        return JSMN_ERROR_PART;
+      }
+    }
+  }
+
+  return count;
+}
+
+/**
+ * Creates a new parser based over a given buffer with an array of tokens
+ * available.
+ */
+JSMN_API void jsmn_init(jsmn_parser *parser) {
+  parser->pos = 0;
+  parser->toknext = 0;
+  parser->toksuper = -1;
+}
+
+#endif /* JSMN_HEADER */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* JSMN_H */