Fixed PSP compiling

CMakeLists.txt

@@ -10,7 +10,8 @@ set(CMAKE_C_STANDARD_REQUIRED ON)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules)
 
 if(NOT DEFINED DUSK_TARGET_SYSTEM)
-  set(DUSK_TARGET_SYSTEM "linux")
+  # set(DUSK_TARGET_SYSTEM "linux")
+  set(DUSK_TARGET_SYSTEM "psp")
 endif()
 
 # Prep cache
@@ -60,6 +61,18 @@ if(DUSK_TARGET_SYSTEM STREQUAL "linux")
     OpenGL::GL
     GL
   )
+
+elseif(DUSK_TARGET_SYSTEM STREQUAL "psp")
+  find_package(SDL2 REQUIRED)
+  target_link_libraries(${DUSK_TARGET_NAME}
+    PRIVATE
+      # pspsdk
+      ${SDL2_LIBRARIES}
+  )
+  target_include_directories(${DUSK_TARGET_NAME}
+    PRIVATE
+      ${SDL2_INCLUDE_DIRS}
+  )
 endif()
 
 # Add code

src/display/CMakeLists.txt

@@ -21,4 +21,13 @@ if(DUSK_TARGET_SYSTEM STREQUAL "linux")
       DISPLAY_WINDOW_WIDTH_DEFAULT=960
       DISPLAY_WINDOW_HEIGHT_DEFAULT=720
   )
+elseif(DUSK_TARGET_SYSTEM STREQUAL "psp")
+  target_compile_definitions(${DUSK_TARGET_NAME}
+    PRIVATE
+      DUSK_DISPLAY_SDL2=1
+      DISPLAY_WINDOW_WIDTH_DEFAULT=480
+      DISPLAY_WINDOW_HEIGHT_DEFAULT=272
+      DISPLAY_WIDTH=480
+      DISPLAY_HEIGHT=272
+  )
 endif()

src/display/display.c

@@ -75,7 +75,7 @@ errorret_t displayUpdate(void) {
 
     // Set viewport size.
     int32_t windowWidth, windowHeight;
-    SDL_GetWindowSize(DISPLAY.window, &windowWidth, &windowHeight);
+    // SDL_GetWindowSize(DISPLAY.window, &windowWidth, &windowHeight);
     glViewport(0, 0, windowWidth, windowHeight);
   #endif
 

src/display/mesh/mesh.h

@@ -19,9 +19,11 @@ typedef enum {
 #define MESH_VERTEX_POS_SIZE 3
 
 typedef struct {
-  GLubyte color[MESH_VERTEX_COLOR_SIZE];
-  GLfloat uv[MESH_VERTEX_UV_SIZE];
-  GLfloat pos[MESH_VERTEX_POS_SIZE];
+  #if DUSK_DISPLAY_SDL2
+    GLubyte color[MESH_VERTEX_COLOR_SIZE];
+    GLfloat uv[MESH_VERTEX_UV_SIZE];
+    GLfloat pos[MESH_VERTEX_POS_SIZE];
+  #endif
 } meshvertex_t;
 
 typedef struct {

src/display/mesh/meshrenderer.c

@@ -6,6 +6,7 @@
  */
 
 #include "meshrenderer.h"
+#include "scene/node.h"
 
 meshrenderer_t MESH_RENDERER_DATA[ECS_ENTITY_COUNT_MAX] = { 0 };
 ecscomponent_t MESH_RENDERER_COMPONENT = ecsComponentInit(
@@ -22,5 +23,9 @@ void meshRendererDraw(const ecsid_t id) {
 
   meshrenderer_t *renderer = &MESH_RENDERER_DATA[id];
   if(!renderer->mesh) return;
+
+  node_t *node = nodeGet(id);
+  nodeMatrixUpdate(id);
+
   meshDraw(renderer->mesh, 0, -1);
 }

src/display/renderer.c

@@ -7,6 +7,7 @@
 
 #include "renderer.h"
 #include "display/mesh/meshrenderer.h"
+#include "scene/node.h"
 
 void rendererRender(const ecsid_t camera) {
   if(camera == -1) return;
@@ -14,11 +15,14 @@ void rendererRender(const ecsid_t camera) {
   // Get the meshes.
   uint32_t meshCount;
   ecsid_t meshes[ECS_ENTITY_COUNT_MAX];
+  ecsid_t id;
   meshCount = meshRendererGetAll(meshes);
 
   cameraPush(camera);
   for(uint32_t i = 0; i < meshCount; i++) {
-    meshRendererDraw(meshes[i]);
+    id = meshes[i];
+    nodeMatrixPush(id);
+    meshRendererDraw(id);
   }
   cameraPop();
 }

src/dusk.h

@@ -17,6 +17,7 @@
 #include <stdarg.h>
 #include <float.h>
 #include <cglm/cglm.h>
+#include <cglm/types.h>
 
 typedef bool bool_t;
 typedef int int_t;

src/engine/engine.h

@@ -6,6 +6,7 @@
  */
 
 #pragma once
+#include "display/display.h"// Important to be included first.
 #include "error/error.h"
 
 typedef struct {

src/main.c

@@ -7,6 +7,9 @@
 
 #include "engine/engine.h"
 
+// PSP_MODULE_INFO("Dusk", 0, 1, 0);
+// PSP_MAIN_THREAD_ATTR(PSP_THREAD_ATTR_USER | THREAD_ATTR_VFPU);
+
 int main(int argc, char **argv) {
   errorret_t ret;
   ret = engineInit();

src/scene/node.c

@@ -6,6 +6,7 @@
 #include "node.h"
 #include "util/memory.h"
 #include "assert/assert.h"
+#include "display/display.h"
 
 node_t NODE_DATA[ECS_ENTITY_COUNT_MAX] = { 0 };
 ecscomponent_t NODE_COMPONENT = ecsComponentInit(
@@ -50,4 +51,79 @@ void nodeMatrixSet(const ecsid_t id, mat4 in) {
   }
 
   glm_mat4_copy(in, node->transform);
+
+  // Extract position, scale, rotation from the matrix.
+  node->position[0] = in[3][0];
+  node->position[1] = in[3][1];
+  node->position[2] = in[3][2];
+
+  node->scale[0] = glm_vec3_norm((vec3){ in[0][0], in[0][1], in[0][2] });
+  node->scale[1] = glm_vec3_norm((vec3){ in[1][0], in[1][1], in[1][2] });
+  node->scale[2] = glm_vec3_norm((vec3){ in[2][0], in[2][1], in[2][2] });
+
+  // Remove scale from the matrix to extract rotation.
+  if(node->scale[0] != 0.0f) {
+    in[0][0] /= node->scale[0];
+    in[0][1] /= node->scale[0];
+    in[0][2] /= node->scale[0];
+    glm_vec3_copy(in[0], node->rotation);
+    glm_vec3_copy(in[1], node->rotation);
+    glm_vec3_copy(in[2], node->rotation);
+    node->rotation[1] = asinf(-in[0][2]);
+    if (cosf(node->rotation[1]) != 0.0f) {
+      node->rotation[0] = atan2f(in[1][2], in[2][2]);
+      node->rotation[2] = atan2f(in[0][1], in[0][0]);
+    } else {
+      node->rotation[0] = 0.0f;
+      node->rotation[2] = atan2f(-in[1][0], in[1][1]);
+    }
+  } else {
+    node->rotation[0] = 0.0f;
+    node->rotation[1] = 0.0f;
+    node->rotation[2] = 0.0f;
+  }
+}
+
+void nodePositionGet(const ecsid_t id, vec3 out) {
+  node_t *node;
+
+  if(nodeHas(id)) {
+    node = &NODE_DATA[id];
+  } else {
+    node = nodeAdd(id);
+  }
+
+  glm_vec3_copy(node->position, out);
+}
+
+void nodeMatrixUpdate(const ecsid_t id) {
+  node_t *node;
+
+  if(nodeHas(id)) {
+    node = &NODE_DATA[id];
+  } else {
+    node = nodeAdd(id);
+  }
+  
+  glm_mat4_identity(node->transform);
+  mat4 rot;
+  glm_euler(node->rotation, rot);
+  glm_mat4_mul(node->transform, rot, node->transform);
+  // glm_scale(node->transform, node->scale);
+}
+
+void nodeMatrixPush(const ecsid_t id) {
+  assertTrue(nodeHas(id), "Not a node component");
+  node_t *node = nodeGet(id);
+
+  #if DUSK_DISPLAY_SDL2
+    glPushMatrix();
+    glMultMatrixf((const GLfloat*)node->transform);
+  #endif
+}
+
+void nodeMatrixPop(void) {
+  #if DUSK_DISPLAY_SDL2
+    glPopMatrix();
+  #endif
 }

src/scene/node.h

@@ -12,6 +12,10 @@
 
 typedef struct {
   mat4 transform;
+
+  vec3 position;
+  vec3 scale;
+  vec3 rotation; // Euler angles in radians
 } node_t;
 
 extern node_t NODE_DATA[ECS_ENTITY_COUNT_MAX];
@@ -25,15 +29,12 @@ extern ecscomponent_t NODE_COMPONENT;
 #define nodeRemove(id) ecsComponentDataRemove(&NODE_COMPONENT, id)
 
 /**
- * Initialize the scene tree.
- * 
- * This will initialize the ECS system and prepare the scene tree for use.
+ * Initialize the node component.
  */
 void nodeInit(void);
 
 /**
  * Callback for when an entity is added to the ECS.
- * This will initialize the scene tree data for the entity.
  * 
  * @param id The ID of the entity being added.
  */
@@ -41,24 +42,42 @@ void nodeEntityAdded(const ecsid_t id);
 
 /**
  * Callback for when an entity is removed from the ECS.
- * This will clean up any scene tree data associated with the entity.
  * 
  * @param id The ID of the entity being removed.
  */
 void nodeEntityRemoved(const ecsid_t id);
 
 /**
- * Get the local transformation matrix of a scene item.
+ * Get the local transformation matrix of a node.
  * 
- * @param id The ID of the scene item.
+ * @param id The ID of the node.
  * @param out Pointer to a mat4 where the local matrix will be stored.
  */
 void nodeMatrixGet(const ecsid_t id, mat4 out);
 
 /**
- * Set the local transformation matrix of a scene item.
+ * Set the local transformation matrix of a node.
  * 
- * @param id The ID of the scene item.
+ * @param id The ID of the node.
  * @param in Pointer to a mat4 containing the new local matrix.
  */
-void nodeMatrixSet(const ecsid_t id, mat4 in);
+void nodeMatrixSet(const ecsid_t id, mat4 in);
+
+/**
+ * Get the local position of a node.
+ * 
+ * @param id The ID of the node.
+ */
+void nodeMatrixUpdate(const ecsid_t id);
+
+/**
+ * Push the node's transformation matrix onto the OpenGL matrix stack.
+ * 
+ * @param id The ID of the node.
+ */
+void nodeMatrixPush(const ecsid_t id);
+
+/**
+ * Pop the last transformation matrix from the OpenGL matrix stack.
+ */
+void nodeMatrixPop(void);

src/thread/CMakeLists.txt

@@ -16,4 +16,9 @@ if(DUSK_TARGET_SYSTEM STREQUAL "linux")
     PRIVATE
       DUSK_THREAD_PTHREAD=1
   )
+elseif(DUSK_TARGET_SYSTEM STREQUAL "psp")
+  target_compile_definitions(${DUSK_TARGET_NAME}
+    PRIVATE
+      DUSK_THREAD_PTHREAD=1
+  )
 endif()