"progress"

archive/src/scene/scene.c

@@ -0,0 +1,96 @@
+// Copyright (c) 2026 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "scene.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+#include "debug/debug.h"
+#include "time/time.h"
+
+#include "display/camera/camera.h"
+#include "display/screen.h"
+
+scene_t SCENE;
+
+errorret_t sceneInit(void) {
+  memoryZero(&SCENE, sizeof(scene_t));
+
+  errorChain(scriptContextInit(&SCENE.scriptContext));
+  errorOk();
+}
+
+errorret_t sceneUpdate(void) {
+  #if TIME_FIXED ==  0
+  if(!TIME.dynamicUpdate) {
+    errorOk();
+  }
+  #endif
+
+  lua_getglobal(SCENE.scriptContext.luaState, "sceneUpdate");
+  if(!lua_isfunction(SCENE.scriptContext.luaState, -1)) {
+    lua_pop(SCENE.scriptContext.luaState, 1);
+    errorOk();
+  }
+
+  if(lua_pcall(SCENE.scriptContext.luaState, 0, 0, 0) != LUA_OK) {
+    const char_t *strErr = lua_tostring(SCENE.scriptContext.luaState, -1);
+    lua_pop(SCENE.scriptContext.luaState, 1);
+    errorThrow("Failed to call function '%s': %s", "sceneUpdate", strErr);
+  }
+  
+  errorOk();
+}
+
+errorret_t sceneRender(void) {
+  lua_getglobal(SCENE.scriptContext.luaState, "sceneRender");
+  if(!lua_isfunction(SCENE.scriptContext.luaState, -1)) {
+    lua_pop(SCENE.scriptContext.luaState, 1);
+    errorOk();
+  }
+
+  if(lua_pcall(SCENE.scriptContext.luaState, 0, 0, 0) != LUA_OK) {
+    const char_t *strErr = lua_tostring(SCENE.scriptContext.luaState, -1);
+    lua_pop(SCENE.scriptContext.luaState, 1);
+    errorThrow("Failed to call function '%s': %s", "sceneRender", strErr);
+  }
+  
+  errorOk();
+}
+
+errorret_t sceneSet(const char_t *script) {
+  // Cleanup old script context.
+  lua_getglobal(SCENE.scriptContext.luaState, "sceneDispose");
+  if(lua_isfunction(SCENE.scriptContext.luaState, -1)) {
+    if(lua_pcall(SCENE.scriptContext.luaState, 0, 0, 0) != LUA_OK) {
+      const char_t *strErr = lua_tostring(SCENE.scriptContext.luaState, -1);
+      lua_pop(SCENE.scriptContext.luaState, 1);
+      errorThrow("Failed to call function '%s': %s", "sceneDispose", strErr);
+    }
+  } else {
+    lua_pop(SCENE.scriptContext.luaState, 1);
+  }
+  scriptContextDispose(&SCENE.scriptContext);
+
+  // Create a new script context.
+  errorChain(scriptContextInit(&SCENE.scriptContext));
+  errorChain(scriptContextExecFile(&SCENE.scriptContext, script));
+  errorOk();
+}
+
+void sceneDispose(void) {
+  lua_getglobal(SCENE.scriptContext.luaState, "sceneDispose");
+  if(lua_isfunction(SCENE.scriptContext.luaState, -1)) {
+    if(lua_pcall(SCENE.scriptContext.luaState, 0, 0, 0) != LUA_OK) {
+      const char_t *strErr = lua_tostring(SCENE.scriptContext.luaState, -1);
+      lua_pop(SCENE.scriptContext.luaState, 1);
+      debugPrint("Failed to call function '%s': %s\n", "sceneDispose", strErr);
+      debugFlush();
+    }
+  } else {
+    lua_pop(SCENE.scriptContext.luaState, 1);
+  }
+  
+  scriptContextDispose(&SCENE.scriptContext);
+}