initial commit

6 files changed, 226 insertions, 0 deletions

diff --git a/.ccls b/.ccls
new file mode 100644
index 0000000..246a3c6
--- /dev/null
+++ b/.ccls
@@ -0,0 +1,2 @@
+tcc
+-Iinclude
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8452281
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+.ccls-cache/
+build/*.o
+build/*.d
+package/*.out
+package/*.exe
+vendor/
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..74fcad5
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,32 @@
+CC=tcc
+CFLAGS=-Wall -Wpedantic -ggdb -std=c99
+
+INCLUDE_DIR=include
+BUILD_DIR=build
+PACKAGE_DIR=package
+LIBS_DIR=libs
+LIBS=-lXi -ldl -lm
+
+SOURCES := $(wildcard src/*.c)
+OBJECTS := $(patsubst src/%.c,$(BUILD_DIR)/%.o,$(SOURCES))
+DEPENDS := $(patsubst src/%.c,$(BUILD_DIR)/%.d,$(SOURCES))
+EXE_NAME=app.out
+TARGET=$(PACKAGE_DIR)/$(EXE_NAME)
+
+all: $(TARGET)
+$(TARGET): $(OBJECTS)
+	$(CC) $(CFLAGS) $(OBJECTS) -L$(LIBS_DIR) $(LIBS) -o $@
+
+-include $(DEPENDS)
+
+$(BUILD_DIR)/%.o: src/%.c Makefile
+	$(CC) $(CFLAGS) -I$(INCLUDE_DIR) -MD -c $< -o $@
+
+.PHONY: clean
+clean:
+	rm -rf $(BUILD_DIR)/* $(TARGET)
+
+.PHONY: run
+run: $(TARGET)
+	@cd $(PACKAGE_DIR) && echo '==== PROGRAM ====' && ./$(EXE_NAME)
+
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..2285802
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "storage.h"
+
+typedef struct
+{
+	int x;
+	int y;
+} Transform;
+
+void
+printTransform(Transform *t)
+{
+	printf("Transform { .x = %i, .y = %i }\n", t->x, t->y);
+}
+
+typedef struct
+{
+	float width;
+	float height;
+	int collisionsCount;
+} Collider;
+
+void
+initStorage(storage *storage)
+{
+	storage->componentsStored = 0;
+	storage->objectsStored = 0;
+	storage->objects = (component_pair *) malloc(MAX_COMPONENTS * sizeof(component_pair));
+
+	REGISTER_COMPONENT(storage, Transform);
+	REGISTER_COMPONENT(storage, Collider);
+}
+
+void
+loadScene(storage *storage)
+{
+	Entity e1 = createEntity(storage);
+	ADD_COMPONENT(storage, e1, Transform);
+
+	Transform *t1 = GET_COMPONENT(storage, Transform, e1);
+	if (t1 == NULL)
+	{
+		printf("t1 is NULL\n");
+	}
+	else
+	{
+		printf("t1 is NOT NULL\n");
+		t1->x = 13;
+		t1->y = 37;
+		printTransform(t1);
+	}
+}
+
+int
+main()
+{
+	storage storage;
+	initStorage(&storage);
+	loadScene(&storage);
+	return 0;
+}
diff --git a/src/storage.c b/src/storage.c
new file mode 100644
index 0000000..2fd2601
--- /dev/null
+++ b/src/storage.c
@@ -0,0 +1,69 @@
+#include "storage.h"
+
+component_pair *
+findPair(storage *this, const char *name)
+{
+	for (int i = 0; i < this->componentsStored; ++i)
+	{
+		component_pair *pair = &this->objects[i];
+		if (strcmp(name, pair->name) == 0)
+		{
+			return pair;
+		}
+	}
+	return NULL;
+}
+
+Entity
+createEntity(storage *this)
+{
+	Entity idx = this->objectsStored++;
+	for (int i = 0; i < this->componentsStored; ++i)
+	{
+		this->objects[i].objects[idx] = NULL;
+	}
+	return idx;
+}
+
+// Not intended for use outside of macros
+void
+internal_registerComponent(storage *storage, char *name, size_t size)
+{
+	unsigned int componentIdx = storage->componentsStored++;
+	storage->objects[componentIdx] = (component_pair) {
+		.name = name,
+		.objectSize = size,
+		.objects = malloc(sizeof(void*) * MAX_OBJECTS)
+	};
+}
+
+void * // NULL if component with such name is not found
+internal_addComponent(storage *this, Entity idx, const char *name)
+{
+	component_pair *pair = findPair(this, name);
+	if (pair == NULL) 
+	{
+		return NULL;
+	}
+
+	pair->objects[idx] = (void *) malloc(pair->objectSize);
+	void *component = pair->objects[idx];
+	// component = (void *) malloc(pair->objectSize);
+
+	return component;
+}
+
+// Not intended for use outside of macros
+void * // NULL if component is not found
+internal_getComponent(storage *this, Entity idx, const char *name)
+{
+	for (int i = 0; i < this->componentsStored; ++i)
+	{
+		component_pair *pair = &this->objects[i];
+		if (strcmp(name, pair->name) == 0)
+		{
+			return pair->objects[idx];
+		}
+	}
+	return NULL;
+}
diff --git a/src/storage.h b/src/storage.h
new file mode 100644
index 0000000..44fe5fb
--- /dev/null
+++ b/src/storage.h
@@ -0,0 +1,53 @@
+#ifndef storage_h_INCLUDED
+#define storage_h_INCLUDED
+
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef MAX_OBJECTS
+#define MAX_OBJECTS 4096
+#endif
+
+#ifndef MAX_COMPONENTS
+#define MAX_COMPONENTS 32
+#endif
+
+#define GET_COMPONENT(storage, componentType, idx) (componentType *) internal_getComponent(storage, idx, #componentType)
+#define REGISTER_COMPONENT(storage, componentType) internal_registerComponent(storage, #componentType, sizeof(componentType))
+#define ADD_COMPONENT(storage, idx, componentType) internal_addComponent(storage, idx, #componentType)
+
+typedef unsigned int Entity;
+
+typedef struct
+{
+	char *name;
+	size_t objectSize;
+	void **objects;
+} component_pair;
+
+typedef struct
+{
+	unsigned int componentsStored;
+	unsigned int objectsStored;
+	component_pair *objects;
+} storage;
+
+component_pair * // NULL if pair is not found
+findPair(storage *this, const char *name);
+
+Entity
+createEntity(storage *this);
+
+// Not intended for use outside of macros
+void
+internal_registerComponent(storage *storage, char *name, size_t size);
+
+void * // NULL if component with such name is not found
+internal_addComponent(storage *this, Entity idx, const char *name);
+
+// Not intended for use outside of macros
+void * // NULL if component is not found
+internal_getComponent(storage *this, Entity idx, const char *name);
+
+#endif // storage_h_INCLUDED
+