Added some time functions.

include/dawn/game/gametime.h

@@ -7,7 +7,9 @@
 
 #pragma once
 
-#define GAMETIME_STEP 0.016
+#define GAMETIME_FIXED_STEP 0.016
+#define GAMETIME_SMALLEST_STEP 0.001
+
 
 typedef struct {
   /**

include/dawn/libs.h

@@ -14,8 +14,12 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include <malloc.h>
-
 #include <string.h>
+
 #if defined(_WIN32) || defined(_WIN64)
+  // Windows Fixes
   # define strtok_r strtok_s
+  # define sleep(n) _sleep(n)
+#else
+
 #endif

src/game/game.c

@@ -30,8 +30,8 @@ bool gameInit() {
   return true;
 }
 
-bool gameUpdate() {
+bool gameUpdate(float platformDelta) {
-  gameTimeUpdate();
+  gameTimeUpdate(platformDelta);
   renderFrameStart();
   inputUpdate();
 

src/game/game.h

@@ -24,9 +24,10 @@ bool gameInit();
 /**
  * Tick the main game loop.
  * 
+ * @param platformDelta The platform tick delta between the last render.
  * @return True if successful, false if safe exit requested..
  */
-bool gameUpdate();
+bool gameUpdate(float platformDelta);
 
 /**
  * Cleanup the game instance.

src/game/gametime.c

@@ -10,13 +10,18 @@
 gametime_t TIME_STATE;
 
 void gameTimeInit() {
-  TIME_STATE.delta = GAMETIME_STEP;
+  TIME_STATE.delta = GAMETIME_FIXED_STEP;
-  TIME_STATE.last = GAMETIME_STEP;
+  TIME_STATE.last = GAMETIME_FIXED_STEP;
-  TIME_STATE.current = GAMETIME_STEP + GAMETIME_STEP;
+  TIME_STATE.current = GAMETIME_FIXED_STEP + GAMETIME_FIXED_STEP;
 }
 
-void gameTimeUpdate() {
+void gameTimeUpdate(float platformDelta) {
+  platformDelta = mathMax(
+    mathMin(platformDelta, GAMETIME_FIXED_STEP),
+    0
+  );
+
   TIME_STATE.last = TIME_STATE.current;
-  TIME_STATE.current = TIME_STATE.current + GAMETIME_STEP;
+  TIME_STATE.current = TIME_STATE.current + platformDelta;
   TIME_STATE.delta = TIME_STATE.current - TIME_STATE.last;
 }

src/game/gametime.h

@@ -7,6 +7,7 @@
 
 #pragma once
 #include <dawn/dawn.h>
+#include "../util/math.h"
 
 /**
  * Initializes the gametime global time tracking.
@@ -15,5 +16,7 @@ void gameTimeInit();
 
 /**
  * Ticks the current game time.
+ * 
+ * @param platformDelta The delta step between frames from the platform engine.
  */
-void gameTimeUpdate();
+void gameTimeUpdate(float platformDelta);

src/platform/glfw/glwfwplatform.c

@@ -21,6 +21,7 @@ int32_t main() {
 
   // Load GLAD
   glfwMakeContextCurrent(window);
+  glfwSwapInterval(0);
   gladLoadGLLoader((GLADloadproc)glfwGetProcAddress);
 
   // Setup window listeners
@@ -46,12 +47,21 @@ int32_t main() {
     // Update the window title.
     glfwSetWindowTitle(window, GAME_STATE.name);
 
-    // Main Render Loop
+    double time = 0;
-    while(!glfwWindowShouldClose(window)) {
-      if(!gameUpdate()) break;
 
-      glfwSwapBuffers(window);
+    // Main Render Loop 
+    while(!glfwWindowShouldClose(window)) {
       glfwPollEvents();
+
+      // Determine the delta.
+      double newTime = glfwGetTime();
+      float fDelta = (float)(newTime - time);
+      time = newTime;
+
+      // Tick the engine.
+      if(!gameUpdate(fDelta)) break;
+      glfwSwapBuffers(window);
+      sleep(0);
     }
 
     // Game has finished running, cleanup.

src/platform/glfw/glwfwplatform.h

@@ -11,6 +11,7 @@
 #include <dawn/dawn.h>
 #include "../../display/render.h"
 #include "../../game/game.h"
+#include "../../game/gametime.h"
 #include "../../input/input.h"
 
 #define WINDOW_WIDTH_DEFAULT 480

src/world/entity/common.c

@@ -42,7 +42,7 @@ void entityCommonRender(entityid_t id, entity_t *entity) {
 
   // Render sprite
   spriteBatchQuad(ENTITY_STATE.spriteBatch, -1,
-    entity->positionX, entity->positionY, entity->positionZ,
+    entity->positionX, entity->positionY, entity->positionZ + 0.16,
     1, 1,
     0, 0, 1, 1
   );

src/world/map/chunk.c

@@ -15,6 +15,7 @@ void chunkLoad(chunk_t *chunk, int32_t x, int32_t y, int32_t z) {
   chunk->tiles[0] = 1;
   chunk->tiles[1] = 1;
   chunk->tiles[16] = 1;
+  chunk->tiles[17] = 1;
 
   // Start by loading the tiles and figuring out how big we need to make the
   // primitive that the chunk uses.