display some debug information

3 files changed, 46 insertions, 4 deletions

diff --git a/src.bin b/src.bin
new file mode 100755
index 0000000..f80cc4a
--- /dev/null
+++ b/src.bin
diff --git a/src/draw/draw.odin b/src/draw/draw.odin
index 1762b25..6c013de 100644
--- a/src/draw/draw.odin
+++ b/src/draw/draw.odin
@@ -5,6 +5,7 @@ import "core:math"
 
 import sg "shared:sokol/gfx"
 import sapp "shared:sokol/app"
+import sdtxt "shared:sokol/debugtext"
 import sglue "shared:sokol/glue"
 
 Vec2 :: [2]f32
@@ -92,6 +93,12 @@ init :: proc(r: ^Renderer) {
   r.sampler = sg.make_sampler({})
 
   r.tint = {1, 1, 1, 1}
+
+  sdtxt.set_context(sdtxt.make_context({
+    color_format = .RGBA8,
+    depth_format = .NONE,
+    sample_count = 1,
+  }))
 }
 
 deinit :: proc(r: ^Renderer) {
@@ -118,6 +125,8 @@ end_frame :: proc(r: ^Renderer) {
   flush_current_batch(r)
   clear(&r.current_batch.vertices)
 
+  sdtxt.draw()
+
   framebuffer_draw_end(r.screen)
 
   r.projection = linalg.matrix_ortho3d(
diff --git a/src/main.odin b/src/main.odin
index 48bf454..e58b94d 100644
--- a/src/main.odin
+++ b/src/main.odin
@@ -13,6 +13,7 @@ import sapp "shared:sokol/app"
 import sglue "shared:sokol/glue"
 import stime "shared:sokol/time"
 import slog "shared:sokol/log"
+import sdtxt "shared:sokol/debugtext"
 
 import "draw"
 import "phys"
@@ -33,6 +34,10 @@ state: struct {
   physics_world: phys.World,
 
   input: Input,
+
+  fps: f32,
+  last_fps: f32,
+  frames_rendered: int,
 }
 
 logger: log.Logger
@@ -53,6 +58,18 @@ init :: proc "c" () {
     logger = {func=slog.func},
   })
 
+  sdtxt.setup({
+    fonts = {
+      0 = sdtxt.font_kc853(),
+      // sdtxt.font_kc854(),
+      // sdtxt.font_z1013(),
+      // sdtxt.font_cpc(),
+      // sdtxt.font_c64(),
+      // sdtxt.font_oric(),
+    },
+    logger = {func=slog.func},
+  })
+
   init_keybinds(&state.input)
 
   draw.init(&state.renderer)
@@ -72,10 +89,6 @@ init :: proc "c" () {
     })
     i += 65
   }
-  // make_platform(Rect{
-  //   start = {i, 340},
-  //   size = {20, 20}
-  // })
 
   make_platform(Rect{
     start = {160, 320},
@@ -123,6 +136,16 @@ frame :: proc "c" () {
 
   update_player(&state.player, f32(sapp.frame_duration()))
 
+  // sdtxt.canvas(f32(sapp.width()), f32(sapp.height()))
+  sdtxt.canvas(draw.SCREEN_WIDTH, draw.SCREEN_HEIGHT)
+  sdtxt.origin(0.1, 0.1)
+  sdtxt.home()
+  sdtxt.font(0)
+
+  stats := sg.query_frame_stats()
+  sdtxt.printf("FPS: %f\n", state.fps)
+  sdtxt.printf("Draw calls: %d\n", stats.num_draw)
+
   draw.new_frame(&state.renderer)
 
   draw_player(state.player)
@@ -132,6 +155,14 @@ frame :: proc "c" () {
   draw.end_frame(&state.renderer)
 
   free_all(context.temp_allocator)
+
+  state.frames_rendered += 1
+  now := f32(stime.sec(stime.now()))
+  if now - state.last_fps > 1 {
+    state.fps = f32(state.frames_rendered) / (now - state.last_fps)
+    state.last_fps = now
+    state.frames_rendered = 0
+  }
 }
 
 event :: proc "c" (event: ^sapp.Event) {
@@ -147,6 +178,7 @@ event :: proc "c" (event: ^sapp.Event) {
 cleanup :: proc "c" () {
   context = default_context()
   sg.shutdown()
+  sdtxt.shutdown()
 
   delete_entity_list(state.platform_list)
 }
@@ -169,3 +201,4 @@ main :: proc() {
 
   log.destroy_console_logger(logger)
 }
+