Build chain compiling engine.

.ccls

@@ -1 +1,3 @@
 gcc
+# Macros
+-DDEBUG=2

.gitignore

@@ -1,4 +1,3 @@
 .vscode/ccls-cache
-.cache
-.config
+config.mk
 build

Makefile

@@ -1,12 +1,41 @@
 SHELL = /usr/bin/env bash
 
-# Build folder
-BUILD_DIR = build
+ROOT := $(realpath $(dir $(lastword $(MAKEFILE_LIST))))
 
-# Outputs target name and path
-SOURCE_OUTPUT = $(BUILD_DIR)/2D_Engine
-CORE_OUTPUT = $(BUILD_DIR)/libcore.a
-ASSET_OUTPUT = $(BUILD_DIR)/game.data
+ifneq ($(realpath $(ROOT)/config.mk), $(ROOT)/config.mk)
+$(error ERROR: Please run the configure script before building.)
+endif
+
+include $(ROOT)/config.mk
+
+#
+# User config
+#
+
+BUILD_DIR_NAME = build
+
+SOURCE_DIR = src
+CORE_DIR = core
+HOST_DIR = host
+
+OUTPUT = 2D_Engine
+ASSET_OUTPUT = game.data
+
+ifneq ($(DEBUG),)
+CFLAGS += -O1 -g -DDEBUG=$(DEBUG) -Wextra -Wall --pedantic -Wno-missing-braces \
+	-Wno-missing-field-initializers -Wformat=2 -Wswitch-default -Wswitch \
+	-Wcast-align -Wpointer-arith -Wbad-function-cast -Wstrict-overflow=5 \
+    -Wstrict-prototypes -Winline -Wundef -Wnested-externs -Wcast-qual \
+	-Wshadow -Wunreachable-code -Wlogical-op -Wfloat-equal -Wstrict-aliasing=2 \
+	-Wredundant-decls -Wold-style-definition
+endif
+
+#
+# End
+#
+
+# Relocate build dir
+BUILD_DIR := $(ROOT)/$(BUILD_DIR_NAME)/$(HOST)
 
 # Verbosity
 Q := @
@@ -15,33 +44,26 @@ Q :=
 endif
 
 # Colors
-export GREEN  := \033[32m
-export YELLOW := \033[33m
-export RESET  := \033[m
+GREEN  := \033[32m
+YELLOW := \033[33m
+RESET  := \033[m
 
 # Default targets
-all: $(SOURCE_OUTPUT)
+all: setup $(BUILD_DIR)/$(OUTPUT)
 
-# Sub Makefiles
-SOURCE_DIR = src
-CORE_DIR = core/src
-ASSETS_DIR = assets
+include $(ROOT)/$(SOURCE_DIR)/Makefile
+include $(ROOT)/$(CORE_DIR)/Makefile
 
-include $(SOURCE_DIR)/Makefile
-include $(CORE_DIR)/Makefile
-include $(ASSETS_DIR)/Makefile
+setup:
+	$(eval export TOTAL_BUILD_FILES := $(shell echo $$(($$(make -n $(OBJECTS) $(CORE_OBJECTS) 2>/dev/null | grep -c $(CC)) + 2))))
+	$(Q)mkdir -p $(dir $(OBJECTS) $(CORE_OBJECTS))
 
-# Clean
-.PHONY: clean
+.PHONY: clean run print-var-%
 clean:
-	$(Q)rm -rf $(BUILD_DIR)
-	@echo "Build dir cleaned"
+	$(Q)rm -rf $(dir $(BUILD_DIR))
 
-# Run executable
-.PHONY: run
 run: all
-	$(Q)cd $(BUILD_DIR) && ./$(notdir $(SOURCE_OUTPUT))
+	$(Q)cd $(BUILD_DIR) && ./$(OUTPUT)
 
-.PHONY: print-%
-print-%  :
+print-var-%  :
 	@echo $($*)

assets/Makefile

@@ -13,7 +13,6 @@ ASSETS := $(addprefix $(ASSETS_DIR)/,$(ASSETS))
 
 ASSETS_OBJECTS = $(ASSETS:%=$(BUILD_DIR)/%.o)
 
-
 ASSET_BUILDER_DIR = $(ASSETS_DIR)/asset_builder/src
 ASSET_BUILDER_OUTPUT = $(BUILD_DIR)/$(ASSETS_DIR)/asset_builder/asset_builder
 include $(ASSET_BUILDER_DIR)/Makefile

assets/asset_builder/.ccls

@@ -1,7 +1,7 @@
 gcc
 # Headers
 -Iassets/asset_builder/src/headers
--Isrc/components/headers
+-Isrc/components
 
 # Macros
 -DDEBUG=2

configure

@@ -10,9 +10,7 @@
 # Project settings no matter current and target hosts
 #
 
-#CACHE_DIR=".cache"
-#LIB_DIR="lib"
-#CONFIG_FILE=".config"
+CONFIG_FILE="config.mk"
 
 #LUA_VERSION="5.5.1"
 #LUA_CHECKSUM="1c4b4068d67061f2a2231ad2b5422e77acea1487ea9890f6320af614f4373dce"
@@ -21,11 +19,6 @@
 # Main
 #
 
-### Setup dirs and logs
-#
-## Cache dir
-#mkdir -p "${CACHE_DIR}"
-
 print_error()
 {
     echo -e "\033[31merror\033[m: $1"
@@ -77,8 +70,7 @@ done
 ## Clean
 if [ -n "${CLEAN}" ]; then
     make clean
-    rm -rf .config .cache lib
-    echo "Cleaned project."
+    rm -rf ${CONFIG_FILE}
 fi
 
 if [ -n "${EXIT_AFTER_CLEAN}" ]; then
@@ -118,6 +110,55 @@ esac
 
 echo
 
+if [ "${CURRENT_HOST}" != "${TARGET_HOST}" ]; then
+    CROSS_COMPILE=TRUE
+fi
+
+if [ -n "${CROSS_COMPILE}" ]; then
+    case "${TARGET_HOST}" in
+      fxcg50)
+        case "${CURRENT_HOST}" in
+          linux)
+            ;;
+          *)
+            print_error "Cross compiling from ${CURRENT_HOST} for ${TARGET_HOST} is not supported yet."
+            ;;
+        esac
+
+        CC="sh-elf-gcc"
+        AR="sh-elf-ar"
+        LIBCORE="libcore.a"
+        ;;
+    esac
+else
+    case "${TARGET_HOST}" in
+      linux)
+        CC="gcc"
+        AR="ar"
+        CFLAGS="--std=c17 -Os -DASSET_FILE_NAME=\\\"\$(notdir \$(ASSET_OUTPUT))\\\" -D_GNU_SOURCE=1 \$(shell pkg-config --cflags sdl3)"
+        LDFLAGS="\$(shell pkg-config --libs sdl3) -lm"
+
+        LIBCORE="libcore.a"
+        ;;
+      *)
+        ;;
+    esac
+fi
+
+echo "Writing config file."
+echo
+echo "${CONFIG_FILE}:"
+echo "\`\`\`"
+echo "HOST = ${TARGET_HOST}" | tee ${CONFIG_FILE}
+echo | tee -a ${CONFIG_FILE}
+echo "CC = ${CC}" | tee -a ${CONFIG_FILE}
+echo "AR = ${AR}" | tee -a ${CONFIG_FILE}
+echo "CFLAGS = ${CFLAGS}" | tee -a ${CONFIG_FILE}
+echo "LDFLAGS = ${LDFLAGS}" | tee -a ${CONFIG_FILE}
+echo | tee -a ${CONFIG_FILE}
+echo "LIBCORE = ${LIBCORE}" | tee -a ${CONFIG_FILE}
+echo "\`\`\`"
+
 #
 ### Download libs
 #echo "===== downloading lua ====="

core/.ccls

@@ -0,0 +1,8 @@
+gcc
+# Headers
+-Icore
+-Icore/host/generic
+-Isrc/components
+
+# Macros
+-DASSET_FILE_NAME="$(make print-var-ASSET_OUTPUT)"

core/Makefile

@@ -0,0 +1,31 @@
+CORE_SOURCES += \
+  main.c \
+  camera.c \
+  linked_list.c \
+  event_bus.c \
+  ecs.c \
+  asset_manager.c \
+  inputs.c \
+  map.c
+
+CORE_INCLUDES += \
+  $(CORE_DIR) \
+  $(CORE_DIR)/$(HOST_DIR)/$(HOST) \
+  $(SOURCE_DIR)/components
+
+include $(ROOT)/$(CORE_DIR)/$(HOST_DIR)/$(HOST)/Makefile
+CORE_OBJECTS := $(CORE_SOURCES:%=$(BUILD_DIR)/$(CORE_DIR)/%.o)
+
+$(BUILD_DIR)/$(LIBCORE): $(CORE_OBJECTS)
+	$(eval CURRENT_FILE := $(shell echo $$(($(CURRENT_FILE) + 1))))
+	$(eval PERCENTAGE := $(shell echo $$(($(CURRENT_FILE) * 100 / $(TOTAL_BUILD_FILES)))))
+	@echo -e "[$(PERCENTAGE)%] $(YELLOW)Creating Static Lib $@$(RESET)"
+	$(Q)$(AR) rcs $@ $(CORE_OBJECTS)
+
+$(BUILD_DIR)/$(CORE_DIR)/%.c.o: $(ROOT)/$(CORE_DIR)/%.c
+	$(eval CURRENT_FILE := $(shell echo $$(($(CURRENT_FILE) + 1))))
+	$(eval PERCENTAGE := $(shell echo $$(($(CURRENT_FILE) * 100 / $(TOTAL_BUILD_FILES)))))
+	@echo -e "[$(PERCENTAGE)%] $(GREEN)Building C object $@$(RESET)"
+	$(Q)$(CC) $(CFLAGS) $(CORE_INCLUDES:%=-I%) -MMD -MP -c $< -o $@
+
+-include $(CORE_OBJECTS:.o=.d)

core/asset_manager.c

@@ -102,10 +102,13 @@ int asset_manager_exit(void)
     if(linked_list_exit(&game.asset_manager.assets_header_defs)) return_failure_int;
     if(linked_list_exit(&game.asset_manager.assets)) return_failure_int;
 
-    if(fclose(game.asset_manager.asset_file))
+    if(game.asset_manager.asset_file)
     {
-        error_printf("Failed to close asset file : %d", errno);
-        return EXIT_FAILURE;
+        if(fclose(game.asset_manager.asset_file))
+        {
+            error_printf("Failed to close asset file : %d", errno);
+            return EXIT_FAILURE;
+        }
     }
 
     debug_printf("Exited asset manager.");

core/errors.h

@@ -16,7 +16,20 @@
         fputc('\n', stderr); \
     } while (0)
 
-#define return_failure_int \
+#define warning_printf(...) \
+    do { \
+        fprintf(stderr, "\033[35mWARNING\033[m: " __VA_ARGS__); \
+        fputc('\n', stderr); \
+    } while (0)
+
+#define error_printf(...) \
+    do { \
+        fprintf(stderr, "\033[31mERROR\033[m: %s:%d:%s(): ", __FILE__, __LINE__, __func__); \
+        fprintf(stderr, __VA_ARGS__); \
+        fputc('\n', stderr); \
+    } while (0)
+
+    #define return_failure_int \
     do { \
         fprintf(stderr, "\tin %s:%d:%s()\n", __FILE__, __LINE__, __func__); \
         return EXIT_FAILURE; \
@@ -36,11 +49,6 @@
 #else
 #define debug_printf(...)
 
-#define return_failure_int return EXIT_FAILURE;
-#define return_failure_ptr return NULL;
-#define goto_failure goto failure;
-#endif
-
 #define warning_printf(...) \
     do { \
         fprintf(stderr, "\033[35mWARNING\033[m: " __VA_ARGS__); \
@@ -49,9 +57,13 @@
 
 #define error_printf(...) \
     do { \
-        fprintf(stderr, "\033[31mERROR\033[m: %s:%d:%s(): ", __FILE__, __LINE__, __func__); \
-        fprintf(stderr, __VA_ARGS__); \
+        fprintf(stderr, "\033[31mERROR\033[m: " __VA_ARGS__); \
         fputc('\n', stderr); \
     } while (0)
 
+#define return_failure_int return EXIT_FAILURE;
+#define return_failure_ptr return NULL;
+#define goto_failure goto failure;
+#endif
+
 #endif // ERRORS_H

core/host/fxcg50/vector2d.c

@@ -0,0 +1,163 @@
+#include "vector2d.h"
+
+void rect_to_frect(const rect_t *rect, frect_t *frect)
+{
+    frect->x = (float)rect->x;
+    frect->y = (float)rect->y;
+    frect->w = (float)rect->w;
+    frect->h = (float)rect->h;
+}
+
+void frect_to_rect(const frect_t *frect, rect_t *rect)
+{
+    rect->x = (int)frect->x;
+    rect->y = (int)frect->y;
+    rect->w = (int)frect->w;
+    rect->h = (int)frect->h;
+}
+
+inline bool point_in_rect(const vector2d_t *p, const rect_t *r)
+{
+    return (p && r && (p->x >= r->x) && (p->x < (r->x + r->w)) && (p->y >= r->y) && (p->y < (r->y + r->h)));
+}
+
+inline bool fpoint_in_rect(const fvector2d_t *p, const frect_t *r)
+{
+    return (p && r && (p->x >= r->x) && (p->x < (r->x + r->w)) && (p->y >= r->y) && (p->y < (r->y + r->h)));
+}
+
+inline bool rect_empty(const rect_t *r)
+{
+    return ((!r) || (r->w <= 0) || (r->h <= 0));
+}
+
+inline bool frect_empty(const frect_t *r)
+{
+    return ((!r) || (r->w <= 0) || (r->h <= 0));
+}
+
+inline bool has_intersection(const rect_t *a, const rect_t *b)
+{
+    int amin, amax, bmin, bmax;
+
+    // Horizontal intersection
+    amin = a->x;
+    amax = amin + a->w;
+    bmin = b->x;
+    bmax = bmin + b->w;
+    if(bmin > amin) amin = bmin;
+    if(bmax < amax) amax = bmax;
+
+    if((amax - EPSILON) < amin) return false;
+
+    // Vertical intersection
+    amin = a->y;
+    amax = amin + a->h;
+    bmin = b->y;
+    bmax = bmin + b->h;
+    if(bmin > amin) amin = bmin;
+    if(bmax < amax) amax = bmax;
+
+    if((amax - EPSILON) < amin) return false;
+
+    return true;
+}
+
+inline bool fhas_intersection(const frect_t *a, const frect_t *b)
+{
+    float amin, amax, bmin, bmax;
+
+    // Horizontal intersection
+    amin = a->x;
+    amax = amin + a->w;
+    bmin = b->x;
+    bmax = bmin + b->w;
+    if(bmin > amin) amin = bmin;
+    if(bmax < amax) amax = bmax;
+
+    if((amax - EPSILON) < amin) return false;
+
+    // Vertical intersection
+    amin = a->y;
+    amax = amin + a->h;
+    bmin = b->y;
+    bmax = bmin + b->h;
+    if(bmin > amin) amin = bmin;
+    if(bmax < amax) amax = bmax;
+
+    if((amax - EPSILON) < amin) return false;
+
+    return true;
+}
+
+inline bool intersect_rect(const rect_t *a, const rect_t *b, rect_t *result)
+{
+    int amin, amax, bmin, bmax;
+
+    // Horizontal intersection
+    amin = a->x;
+    amax = amin + a->w;
+    bmin = a->x;
+    bmax = bmin + a->w;
+    if (bmin > amin) amin = bmin;
+    result->x = amin;
+    if (bmax < amax) amax = bmax;
+    result->w = amax - amin;
+
+    // Vertical intersection
+    amin = a->y;
+    amax = amin + a->h;
+    bmin = b->y;
+    bmax = bmin + b->h;
+    if (bmin > amin) amin = bmin;
+    result->y = amin;
+    if (bmax < amax) amax = bmax;
+    result->h = amax - amin;
+
+    return !rect_empty(result);
+}
+
+inline bool intersect_frect(const frect_t *a, const frect_t *b, frect_t *result)
+{
+    float Amin, Amax, Bmin, Bmax;
+
+    // Horizontal intersection
+    Amin = a->x;
+    Amax = Amin + a->w;
+    Bmin = a->x;
+    Bmax = Bmin + a->w;
+    if (Bmin > Amin) {
+        Amin = Bmin;
+    }
+    result->x = Amin;
+    if (Bmax < Amax) {
+        Amax = Bmax;
+    }
+    result->w = Amax - Amin;
+
+    // Vertical intersection
+    Amin = a->y;
+    Amax = Amin + a->h;
+    Bmin = b->y;
+    Bmax = Bmin + b->h;
+    if (Bmin > Amin) {
+        Amin = Bmin;
+    }
+    result->y = Amin;
+    if (Bmax < Amax) {
+        Amax = Bmax;
+    }
+    result->h = Amax - Amin;
+
+    return !frect_empty(result);
+}
+
+inline float lerp(float a, float b, float s)
+{
+    return a * (1 - s) + b * s;
+}
+
+inline float lerp_time(float a, float b, float s, float t)
+{
+    return lerp(a, b, 1 - powf(1 - s, t * 60.0f));
+}

core/host/fxcg50/vector2d.h

@@ -0,0 +1,163 @@
+#ifndef VECTOR2D_H
+#define VECTOR2D_H
+
+#include <SDL3/SDL_rect.h>
+#include <math.h>
+
+/**
+ * @brief Point struct. (int)
+ *
+ * @param x     X pos
+ * @param y     Y pos
+*/
+typedef struct vector2d_t {
+    int x, y;
+} vector2d_t;
+
+/**
+ * @brief Point struct. (float)
+ *
+ * @param x     X pos
+ * @param y     Y pos
+*/
+typedef struct fvector2d_t {
+    float x, y;
+} fvector2d_t;
+
+/**
+ * @brief Rectangle struct. (int)
+ *
+ * @param x     X pos
+ * @param y     Y pos
+ * @param w     Width
+ * @param h     Height
+*/
+typedef struct rect_t {
+    int x, y;
+    int w, h;
+} rect_t;
+
+/**
+ * @brief Rectangle struct. (float)
+ *
+ * @param x     X pos
+ * @param y     Y pos
+ * @param w     Width
+ * @param h     Height
+*/
+typedef struct frect_t {
+    float x, y;
+    float w, h;
+} frect_t;
+
+#define EPSILON 0.0f
+
+#define f_is_zero(X) (fabsf(X) <= EPSILON)
+
+#define f_is_not_zero(X) (fabsf(X) > EPSILON)
+
+void rect_to_frect(const rect_t *rect, frect_t *frect);
+
+void frect_to_rect(const frect_t *frect, rect_t *rect);
+
+/**
+ * @brief Verify if a point is in a rectangle. (int)
+ *
+ * @param p     Vector2d
+ * @param r     Rectangle
+ *
+ * @return True if the point is in the rectangle, else false.
+*/
+bool point_in_rect(const vector2d_t *p, const rect_t *r);
+
+/**
+ * @brief Verify if a point is in a rectangle. (float)
+ *
+ * @param p     Vector2d
+ * @param r     Rectangle
+ *
+ * @return True if the point is in the rectangle, else false.
+*/
+bool fpoint_in_rect(const fvector2d_t *p, const frect_t *r);
+
+/**
+ * @brief Verify if a rectangle is empty
+ *
+ * @param r     Rectangle
+ *
+ * @return True if the rectangle is empty, else false.
+*/
+bool rect_empty(const rect_t *r);
+
+/**
+ * @brief Verify if a rectangle is empty
+ *
+ * @param r     Rectangle
+ *
+ * @return True if the rectangle is empty, else false.
+*/
+bool frect_empty(const frect_t *r);
+
+/**
+ * @brief Verify if there is a intersction between two rectangles. (int)
+ *
+ * @param A     Rectangle A
+ * @param B     Rectangle B
+ *
+ * @return True if there is an intersection, else false.
+*/
+bool has_intersection(const rect_t *a, const rect_t *b);
+
+/**
+ * @brief Verify if there is a intersction between two rectangles. (float)
+ *
+ * @param A     Rectangle A
+ * @param B     Rectangle B
+ *
+ * @return True if there is an intersection, else false.
+*/
+bool fhas_intersection(const frect_t *a, const frect_t *b);
+
+/**
+ * @brief Verify if there is an intersection between two rectangles and get the intersection rectangle. (int)
+ *
+ * @param A         Rectangle A
+ * @param B         Rectangle B
+ * @param result    The intersection rectangle
+ *
+ * @return True if there is an intersection, else false.
+*/
+bool intersect_rect(const rect_t *a, const rect_t *b, rect_t *result);
+
+/**
+ * @brief Verify if there is an intersection between two rectangles and get the intersection rectangle. (float)
+ *
+ * @param A         Rectangle A
+ * @param B         Rectangle B
+ * @param result    The intersection rectangle
+ *
+ * @return True if there is an intersection, else false.
+*/
+bool intersect_frect(const frect_t *a, const frect_t *b, frect_t *result);
+
+/**
+ * @brief Lerp a to b with smoothing factor s.
+ *
+ * @param a Current value
+ * @param b Target value
+ * @param s Smoothing factor
+ */
+float lerp(float a, float b, float s);
+
+/**
+ * @brief Lerp a to b with smoothing factor s and time basis t.
+ * Smoothing factor is for 60 fps call time.
+ *
+ * @param a Current value
+ * @param b Target value
+ * @param s Smoothing factor
+ * @param t Delta time
+ */
+float lerp_time(float a, float b, float s, float t);
+
+#endif // VECTOR2D_H

core/host/generic/display.h

@@ -0,0 +1,31 @@
+#ifndef DISPLAY_H
+#define DISPLAY_H
+
+#include "texture.h"
+#include "vector2d.h"
+
+#define C_BLACK 0,   0,   0
+#define C_RED   255, 0,   0
+#define C_GREEN 0,   255, 0
+#define C_BLUE  0,   0,   255
+#define C_WHITE 255, 255, 255
+
+#define DISPLAY_WIDTH 720
+#define DISPLAY_HEIGHT 480
+
+//#define DRIVERS NULL
+#define DRIVERS "vulkan,gpu,software"
+
+typedef struct display_t {
+} display_t;
+
+int display_init(void);
+void display_exit(void);
+
+int display_clear(void);
+int display_update(void);
+
+int display_draw_texture(texture_t *texture, const rect_t *src_rect, const rect_t *dst_rect, bool flip);
+int display_draw_frect(const frect_t *frect, unsigned int r, unsigned int g, unsigned int b, unsigned int a);
+
+#endif // DISPLAY_H

core/host/generic/texture.h

@@ -0,0 +1,14 @@
+#ifndef TEXTURE_H
+#define TEXTURE_H
+
+#define TEXTURE_TRANSPARENT_COLOR 0x0001
+
+typedef struct texture_t texture_t;
+
+#define get_width(T) 1
+#define get_height(T) 1
+
+texture_t *load_texture(void);
+void destroy_texture(texture_t *texture);
+
+#endif // TEXTURE_H

core/host/generic/vector2d.h

@@ -0,0 +1,163 @@
+#ifndef VECTOR2D_H
+#define VECTOR2D_H
+
+#include <SDL3/SDL_rect.h>
+#include <math.h>
+
+/**
+ * @brief Point struct. (int)
+ *
+ * @param x     X pos
+ * @param y     Y pos
+*/
+typedef struct vector2d_t {
+    int x, y;
+} vector2d_t;
+
+/**
+ * @brief Point struct. (float)
+ *
+ * @param x     X pos
+ * @param y     Y pos
+*/
+typedef struct fvector2d_t {
+    float x, y;
+} fvector2d_t;
+
+/**
+ * @brief Rectangle struct. (int)
+ *
+ * @param x     X pos
+ * @param y     Y pos
+ * @param w     Width
+ * @param h     Height
+*/
+typedef struct rect_t {
+    int x, y;
+    int w, h;
+} rect_t;
+
+/**
+ * @brief Rectangle struct. (float)
+ *
+ * @param x     X pos
+ * @param y     Y pos
+ * @param w     Width
+ * @param h     Height
+*/
+typedef struct frect_t {
+    float x, y;
+    float w, h;
+} frect_t;
+
+#define EPSILON 0.0f
+
+#define f_is_zero(X) (fabsf(X) <= EPSILON)
+
+#define f_is_not_zero(X) (fabsf(X) > EPSILON)
+
+void rect_to_frect(const rect_t *rect, frect_t *frect);
+
+void frect_to_rect(const frect_t *frect, rect_t *rect);
+
+/**
+ * @brief Verify if a point is in a rectangle. (int)
+ *
+ * @param p     Vector2d
+ * @param r     Rectangle
+ *
+ * @return True if the point is in the rectangle, else false.
+*/
+bool point_in_rect(const vector2d_t *p, const rect_t *r);
+
+/**
+ * @brief Verify if a point is in a rectangle. (float)
+ *
+ * @param p     Vector2d
+ * @param r     Rectangle
+ *
+ * @return True if the point is in the rectangle, else false.
+*/
+bool fpoint_in_rect(const fvector2d_t *p, const frect_t *r);
+
+/**
+ * @brief Verify if a rectangle is empty
+ *
+ * @param r     Rectangle
+ *
+ * @return True if the rectangle is empty, else false.
+*/
+bool rect_empty(const rect_t *r);
+
+/**
+ * @brief Verify if a rectangle is empty
+ *
+ * @param r     Rectangle
+ *
+ * @return True if the rectangle is empty, else false.
+*/
+bool frect_empty(const frect_t *r);
+
+/**
+ * @brief Verify if there is a intersction between two rectangles. (int)
+ *
+ * @param A     Rectangle A
+ * @param B     Rectangle B
+ *
+ * @return True if there is an intersection, else false.
+*/
+bool has_intersection(const rect_t *a, const rect_t *b);
+
+/**
+ * @brief Verify if there is a intersction between two rectangles. (float)
+ *
+ * @param A     Rectangle A
+ * @param B     Rectangle B
+ *
+ * @return True if there is an intersection, else false.
+*/
+bool fhas_intersection(const frect_t *a, const frect_t *b);
+
+/**
+ * @brief Verify if there is an intersection between two rectangles and get the intersection rectangle. (int)
+ *
+ * @param A         Rectangle A
+ * @param B         Rectangle B
+ * @param result    The intersection rectangle
+ *
+ * @return True if there is an intersection, else false.
+*/
+bool intersect_rect(const rect_t *a, const rect_t *b, rect_t *result);
+
+/**
+ * @brief Verify if there is an intersection between two rectangles and get the intersection rectangle. (float)
+ *
+ * @param A         Rectangle A
+ * @param B         Rectangle B
+ * @param result    The intersection rectangle
+ *
+ * @return True if there is an intersection, else false.
+*/
+bool intersect_frect(const frect_t *a, const frect_t *b, frect_t *result);
+
+/**
+ * @brief Lerp a to b with smoothing factor s.
+ *
+ * @param a Current value
+ * @param b Target value
+ * @param s Smoothing factor
+ */
+float lerp(float a, float b, float s);
+
+/**
+ * @brief Lerp a to b with smoothing factor s and time basis t.
+ * Smoothing factor is for 60 fps call time.
+ *
+ * @param a Current value
+ * @param b Target value
+ * @param s Smoothing factor
+ * @param t Delta time
+ */
+float lerp_time(float a, float b, float s, float t);
+
+#endif // VECTOR2D_H

core/host/linux/.ccls

@@ -0,0 +1,5 @@
+gcc
+# Headers
+-Icore
+-Icore/host/linux
+-Isrc/components

core/host/linux/Makefile

@@ -0,0 +1,7 @@
+CORE_SOURCES += \
+  $(HOST_DIR)/$(HOST)/display.c \
+  $(HOST_DIR)/$(HOST)/vector2d.c \
+  $(HOST_DIR)/$(HOST)/texture.c
+
+CORE_INCLUDES += \
+  $(CORE_DIRE)

core/host/linux/display.h

@@ -2,7 +2,6 @@
 #define DISPLAY_H
 
 #include <SDL3/SDL_render.h>
-#include "asset_manager.h"
 #include "texture.h"
 #include "vector2d.h"
 

core/host/linux/memory_alloc.h

@@ -0,0 +1,6 @@
+#ifndef MEMORY_ALLOC_H
+#define MEMORY_ALLOC_H
+
+#include <stdlib.h>
+
+#endif // MEMORY_ALLOC_H

core/host/linux/texture.h

@@ -7,6 +7,9 @@
 
 typedef SDL_Texture texture_t;
 
+#define get_width(T) T->w
+#define get_height(T) T->h
+
 texture_t *load_texture(void);
 void destroy_texture(texture_t *texture);
 

core/host/linux/vector2d.c

@@ -1,13 +1,5 @@
 #include "vector2d.h"
 
-void rect_to_frect(const rect_t *rect, frect_t *frect)
-{
-    frect->x = (float)rect->x;
-    frect->y = (float)rect->y;
-    frect->w = (float)rect->w;
-    frect->h = (float)rect->h;
-}
-
 void frect_to_rect(const frect_t *frect, rect_t *rect)
 {
     rect->x = (int)frect->x;

core/host/linux/vector2d.h

@@ -40,13 +40,13 @@ typedef SDL_Rect rect_t;
 */
 typedef SDL_FRect frect_t;
 
-#define EPSILON 0.000001f
+#define EPSILON 0.0f
 
 #define f_is_zero(X) (fabsf(X) <= EPSILON)
 
 #define f_is_not_zero(X) (fabsf(X) > EPSILON)
 
-void rect_to_frect(const rect_t *rect, frect_t *frect);
+#define rect_to_frect(R, FR) SDL_RectToFRect(R, FR)
 
 void frect_to_rect(const frect_t *frect, rect_t *rect);
 

core/map.c

@@ -406,8 +406,8 @@ static inline int draw_tile(uint16_t tile_x, uint16_t tile_y, uint16_t tile_id)
     if(!tile_id) return EXIT_SUCCESS;
 
     rect_t src_frect = {
-        .x = tile_id * TILE_SIZE % game.map->tileset->w,
-        .y = tile_id * TILE_SIZE / game.map->tileset->w * TILE_SIZE,
+        .x = tile_id * TILE_SIZE % get_width(game.map->tileset),
+        .y = tile_id * TILE_SIZE / get_height(game.map->tileset) * TILE_SIZE,
         .w = TILE_SIZE,
         .h = TILE_SIZE
     };

core/src/.ccls

@@ -1,8 +0,0 @@
-gcc
-# Headers
--Icore/src
--Isrc/components
-
-# Macros
--DDEBUG=2
--DASSET_FILE_NAME="$(make print-ASSET_OUTPUT)"

core/src/Makefile

@@ -1,74 +0,0 @@
-# Source files
-CORE_SOURCES := \
-  linked_list.c \
-  vector2d.c \
-  inputs.c \
-  asset_manager.c \
-  texture.c \
-  map.c \
-  camera.c \
-  event_bus.c \
-  ecs.c \
-  display.c \
-  main.c
-
-# Compiler and flags
-CORE_CC = gcc
-ifeq ($(RELEASE), 1)
-CORE_CFLAGS = --std=c17 --pedantic -O3 -DASSET_FILE_NAME=\"$(notdir $(ASSET_OUTPUT))\" -D_GNU_SOURCE=1 $(shell pkg-config --cflags sdl3) # RELEASE
-else
-CORE_CFLAGS = --std=c17 --pedantic -O1 -g -DDEBUG=2 -DASSET_FILE_NAME=\"$(notdir $(ASSET_OUTPUT))\" -D_GNU_SOURCE=1 $(shell pkg-config --cflags sdl3) \
-	-Wall -Wno-missing-braces -Wextra -Wno-missing-field-initializers \
-    -Wformat=2 -Wswitch-default -Wswitch -Wcast-align \
-    -Wpointer-arith -Wbad-function-cast -Wstrict-overflow=5 \
-    -Wstrict-prototypes -Winline -Wundef -Wnested-externs \
-    -Wcast-qual -Wshadow -Wunreachable-code -Wlogical-op \
-    -Wfloat-equal -Wstrict-aliasing=2 -Wredundant-decls \
-    -Wold-style-definition # DEVELOPEMENT
-endif
-
-CORE_INCLUDE_DIRS = $(SOURCE_DIR)/components $(CORE_DIR)
-CORE_INCLUDE_DIRS := $(addprefix -I, $(CORE_INCLUDE_DIRS))
-
-CORE_AR = ar
-CORE_ARFLAGS =
-
-# Used in final linking.
-CORE_DEPS_FLAGS = $(shell pkg-config --libs sdl3) -lm
-
-# Deduce objects
-CORE_OBJECTS = $(CORE_SOURCES:%.c=$(BUILD_DIR)/$(CORE_DIR)/%.o)
-
-# Current file nb to process
-CURRENT_CORE_FILE := 0
-
-# Build core target
-build_core: core_setup count_core_build core_end
-
-# Core build directories
-core_setup:
-	@echo "Building $(notdir $(CORE_OUTPUT))"
-	$(Q)mkdir -p $(dir $(CORE_OBJECTS))
-
-# Count nb of files to build
-count_core_build:
-	$(eval export TOTAL_CORE_FILES := $(shell echo $$(($$(make -n $(CORE_OBJECTS) 2>/dev/null | grep -c "Building") + 1))))
-
-# Link core target
-$(CORE_OUTPUT): $(CORE_OBJECTS)
-	@echo -e "[100%] $(YELLOW)Linking $(notdir $(CORE_OUTPUT))$(RESET)"
-	$(Q)$(CORE_AR) rcs $(CORE_ARFLAGS) $@ $^
-
-# Build .o files
-$(BUILD_DIR)/$(CORE_DIR)/%.o: $(CORE_DIR)/%.c
-	$(eval CURRENT_CORE_FILE := $(shell echo $$(($(CURRENT_CORE_FILE)+1))))
-	$(eval PERCENTAGE := $(shell echo $$(($(CURRENT_CORE_FILE)*100/$(TOTAL_CORE_FILES)))))
-	@echo -e "[$(PERCENTAGE)%] $(GREEN)Building C object $@$(RESET)"
-	$(Q)$(CORE_CC) $(CORE_CFLAGS) $(CORE_INCLUDE_DIRS) -MMD -MP -c $< -o $@
-
-# Print ending message
-core_end: $(CORE_OUTPUT)
-	@echo "Built target $(notdir $(CORE_OUTPUT))"
-
-# Source files dependencies
--include $(CORE_OBJECTS:.o=.d)

src/.ccls

@@ -1,7 +1,5 @@
 gcc
 # Headers
 -Isrc/components
--Icore/src
-
-# Macros
--DDEBUG=2
+-Icore
+-Icore/host/generic

src/Makefile

@@ -1,5 +1,4 @@
-# Source files
-SOURCES := \
+SOURCES += \
   game.c \
   components/transform_component.c \
   components/sprite_component.c \
@@ -12,61 +11,21 @@ SOURCES := \
   components/door_component.c \
   components/lua_component.c
 
-# Compiler and flags
-SRC_CC = gcc
-ifeq ($(RELEASE), 1)
-SRC_CFLAGS = --std=c17 --pedantic -O3 # RELEASE
+INCLUDES += \
+  $(SOURCE_DIR)/components \
+  $(CORE_DIR) \
+  $(CORE_DIR)/$(HOST_DIR)/$(HOST)
 
-SRC_LDFLAGS = -O3
-else
-SRC_CFLAGS = --std=c17 --pedantic -O1 -g -DDEBUG=2 \
-	-Wall -Wno-missing-braces -Wextra -Wno-missing-field-initializers \
-    -Wformat=2 -Wswitch-default -Wswitch -Wcast-align \
-    -Wpointer-arith -Wbad-function-cast -Wstrict-overflow=5 \
-    -Wstrict-prototypes -Winline -Wundef -Wnested-externs \
-    -Wcast-qual -Wshadow -Wunreachable-code -Wlogical-op \
-    -Wfloat-equal -Wstrict-aliasing=2 -Wredundant-decls \
-    -Wold-style-definition # DEVELOPEMENT
+OBJECTS := $(SOURCES:%=$(BUILD_DIR)/$(SOURCE_DIR)/%.o)
 
-SRC_LDFLAGS = -O1
-endif
+$(BUILD_DIR)/$(OUTPUT): $(BUILD_DIR)/$(LIBCORE) $(OBJECTS)
+	@echo -e "[100%] $(YELLOW)Linking $(OUTPUT)$(RESET)"
+	$(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(OBJECTS) $(BUILD_DIR)/$(LIBCORE) -o $@
 
-SRC_INCLUDE_DIRS = $(SOURCE_DIR)/components $(CORE_DIR)
-SRC_INCLUDE_DIRS := $(addprefix -I, $(SRC_INCLUDE_DIRS))
-
-# Deduce objects
-SOURCE_OBJECTS = $(SOURCES:%.c=$(BUILD_DIR)/$(SOURCE_DIR)/%.o)
-
-# Current file nb to process
-CURRENT_SRC_FILE := 0
-
-# Build src target
-build_src: src_setup count_src_build src_end
-
-# Source build directories
-src_setup:
-	@echo "Building $(notdir $(SOURCE_OUTPUT))"
-	$(Q)mkdir -p $(dir $(SOURCE_OBJECTS))
-
-# Count nb of files to build
-count_src_build:
-	$(eval export TOTAL_SRC_FILES := $(shell echo $$(($$(make -n $(SOURCE_OBJECTS) 2>/dev/null | grep -c "Building") + 1))))
-
-# Link game target
-$(SOURCE_OUTPUT): $(SOURCE_OBJECTS) $(CORE_OUTPUT)
-	@echo -e "[100%] $(YELLOW)Linking $(notdir $(SOURCE_OUTPUT))$(RESET)"
-	$(Q)$(SRC_CC) $(SOURCE_OBJECTS) -L./$(BUILD_DIR) $(CORE_OUTPUT) -o $@ $(SRC_LDFLAGS) $(CORE_DEPS_FLAGS)
-
-# Build .o files
-$(BUILD_DIR)/$(SOURCE_DIR)/%.o: $(SOURCE_DIR)/%.c
-	$(eval CURRENT_SRC_FILE := $(shell echo $$(($(CURRENT_SRC_FILE)+1))))
-	$(eval PERCENTAGE := $(shell echo $$(($(CURRENT_SRC_FILE)*100/$(TOTAL_SRC_FILES)))))
+$(BUILD_DIR)/$(SOURCE_DIR)/%.c.o: $(ROOT)/$(SOURCE_DIR)/%.c
+	$(eval CURRENT_FILE := $(shell echo $$(($(CURRENT_FILE) + 1))))
+	$(eval PERCENTAGE := $(shell echo $$(($(CURRENT_FILE) * 100 / $(TOTAL_BUILD_FILES)))))
 	@echo -e "[$(PERCENTAGE)%] $(GREEN)Building C object $@$(RESET)"
-	$(Q)$(SRC_CC) $(SRC_CFLAGS) $(SRC_INCLUDE_DIRS) -MMD -MP -c $< -o $@
+	$(Q)$(CC) $(CFLAGS) $(INCLUDES:%=-I%) -MMD -MP -c $< -o $@
 
-# Print ending message
-src_end: $(SOURCE_OUTPUT)
-	@echo "Built target $(notdir $(SOURCE_OUTPUT))"
-
-# Source files dependencies
--include $(SOURCE_OBJECTS:.o=.d)
+-include $(OBJECTS:.o=.d)

src/components/physics_system.c

@@ -96,11 +96,11 @@ static inline int action_detect_solve_entities_collision(elem_t *elem, void *arg
 
     const frect_t *hitbox_bounds = &hitbox_component_data->bounds;
     const frect_t *target_hitbox_bounds = &target_hitbox_component_data->bounds;
-    frect_t intersect_frect;
+    frect_t intersect;
 
-    if(intersect_frect(hitbox_bounds, target_hitbox_bounds, &intersect_frect))
+    if(intersect_frect(hitbox_bounds, target_hitbox_bounds, &intersect))
     {
-        if(intersect_frect.w < intersect_frect.h)
+        if(intersect.w < intersect.h)
         {
             const float left_correction = hitbox_bounds->x + hitbox_bounds->w - target_hitbox_bounds->x;
             const float right_correction = target_hitbox_bounds->x + target_hitbox_bounds->w - hitbox_bounds->x;