move platformes and scenery to /apps/demos/

apps/demos/scenery/CMakeLists.txt

@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.21)
+
+project(scenery LANGUAGES C)
+
+if(NOT CMAKE_BUILD_TYPE)
+        set(CMAKE_BUILD_TYPE Debug)
+endif()
+
+add_subdirectory($ENV{TWNROOT} $ENV{TWNBUILDDIR})
+
+set(SOURCE_FILES
+        game.c
+        state.h
+
+        scenes/scene.c scenes/scene.h
+        scenes/title.c scenes/title.h
+        scenes/ingame.c scenes/ingame.h
+)
+
+use_townengine(${PROJECT_NAME} "${SOURCE_FILES}" ${CMAKE_CURRENT_SOURCE_DIR})

apps/demos/scenery/data/packs/data.toml

@@ -0,0 +1,3 @@
+[[deps]]
+source = "../../common-data" # where does it come from, might be an url
+name = "common-data"         # should be globally unique

apps/demos/scenery/data/twn.toml

@@ -0,0 +1,11 @@
+[about]
+title = "Serene Scenery"
+developer = "Townengine Team"
+app_id = "platformer-demo"
+dev_id = "townengine-team"
+
+[game]
+base_render_width = 640
+base_render_height = 360
+
+[engine]

apps/demos/scenery/game.c

@@ -0,0 +1,80 @@
+#include "state.h"
+#include "scenes/scene.h"
+#include "scenes/title.h"
+
+#include "twn_game_api.h"
+
+#include <stdio.h>
+#include <malloc.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+
+void game_tick(void) {
+    if (ctx.initialization_needed) {
+        if (!ctx.udata) {
+            ctx.udata = ccalloc(1, sizeof (State));
+
+            State *state = ctx.udata;
+            state->ctx = &ctx;
+            state->scene = title_scene(state);
+        }
+
+        input_add_action("debug_toggle");
+        input_bind_action_control("debug_toggle", CONTROL_BACKSPACE);
+
+        input_add_action("debug_dump_atlases");
+        input_bind_action_control("debug_dump_atlases", CONTROL_HOME);
+
+        input_add_action("player_left");
+        input_bind_action_control("player_left", CONTROL_A);
+
+        input_add_action("player_right");
+        input_bind_action_control("player_right", CONTROL_D);
+
+        input_add_action("player_forward");
+        input_bind_action_control("player_forward", CONTROL_W);
+
+        input_add_action("player_backward");
+        input_bind_action_control("player_backward", CONTROL_S);
+
+        input_add_action("player_jump");
+        input_bind_action_control("player_jump", CONTROL_SPACE);
+
+        input_add_action("player_run");
+        input_bind_action_control("player_run", CONTROL_LSHIFT);
+
+        input_add_action("ui_accept");
+        input_bind_action_control("ui_accept", CONTROL_RETURN);
+
+        input_add_action("mouse_capture_toggle");
+        input_bind_action_control("mouse_capture_toggle", CONTROL_ESCAPE);
+    }
+
+    State *state = ctx.udata;
+
+    if (input_is_action_just_pressed("debug_toggle")) {
+        ctx.debug = !ctx.debug;
+    }
+
+    if (input_is_action_just_pressed("debug_dump_atlases")) {
+        textures_dump_atlases();
+    }
+
+    state->scene->tick(state);
+
+    /* there's a scene switch pending, we can do it now that the tick is done */
+    if (state->next_scene != NULL) {
+        state->scene->end(state);
+        state->scene = state->next_scene;
+        state->is_scene_switching = false;
+        state->next_scene = NULL;
+    }
+}
+
+
+void game_end(void) {
+    State *state = ctx.udata;
+    state->scene->end(state);
+    free(state);
+}

apps/demos/scenery/scenes/ingame.c

@@ -0,0 +1,117 @@
+#include "ingame.h"
+#include "title.h"
+#include "scene.h"
+
+#include "twn_game_api.h"
+#include "twn_vec.h"
+
+#define STB_PERLIN_IMPLEMENTATION
+#include <stb_perlin.h>
+#include <SDL2/SDL.h>
+
+#include <stdlib.h>
+
+
+static void ingame_tick(State *state) {
+    SceneIngame *scn = (SceneIngame *)state->scene;
+
+    if (input_is_mouse_captured()) {
+        const float sensitivity = 0.6f; /* TODO: put this in a better place */
+        scn->yaw += (float)ctx.mouse_relative_position.x * sensitivity;
+        scn->pitch -= (float)ctx.mouse_relative_position.y * sensitivity;
+        scn->pitch = clampf(scn->pitch, -89.0f, 89.0f);
+
+        const float yaw_rad = scn->yaw * (float)DEG2RAD;
+        const float pitch_rad = scn->pitch * (float)DEG2RAD;
+
+        scn->cam.target = m_vec_norm(((Vec3){
+            cosf(yaw_rad) * cosf(pitch_rad),
+            sinf(pitch_rad),
+            sinf(yaw_rad) * cosf(pitch_rad)
+        }));
+    }
+
+    const Vec3 right = m_vec_norm(m_vec_cross(scn->cam.target, scn->cam.up));
+    const float speed = 0.04f; /* TODO: put this in a better place */
+    if (input_is_action_pressed("player_left"))
+        scn->cam.pos = vec3_sub(scn->cam.pos, m_vec_scale(right, speed));
+
+    if (input_is_action_pressed("player_right"))
+        scn->cam.pos = vec3_add(scn->cam.pos, m_vec_scale(right, speed));
+
+    if (input_is_action_pressed("player_forward"))
+        scn->cam.pos = vec3_add(scn->cam.pos, m_vec_scale(scn->cam.target, speed));
+
+    if (input_is_action_pressed("player_backward"))
+        scn->cam.pos = vec3_sub(scn->cam.pos, m_vec_scale(scn->cam.target, speed));
+
+    if (input_is_action_pressed("player_jump"))
+        scn->cam.pos.y += speed;
+
+    if (input_is_action_pressed("player_run"))
+        scn->cam.pos.y -= speed;
+
+    /* toggle mouse capture with end key */
+    if (input_is_action_just_pressed("mouse_capture_toggle")) {
+        input_set_mouse_captured(!input_is_mouse_captured());
+    }
+
+    draw_camera(&scn->cam);
+
+    #define TERRAIN_FREQUENCY 0.1f
+
+    for (int ly = 64; ly--;) {
+        for (int lx = 64; lx--;) {
+            float x = SDL_truncf(scn->cam.pos.x + 32 - lx);
+            float y = SDL_truncf(scn->cam.pos.z + 32 - ly);
+
+            float d0 = stb_perlin_noise3((float)x       * TERRAIN_FREQUENCY, (float)y       * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 3 - 6;
+            float d1 = stb_perlin_noise3((float)(x + 1) * TERRAIN_FREQUENCY, (float)y       * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 3 - 6;
+            float d2 = stb_perlin_noise3((float)(x + 1) * TERRAIN_FREQUENCY, (float)(y - 1) * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 3 - 6;
+            float d3 = stb_perlin_noise3((float)x       * TERRAIN_FREQUENCY, (float)(y - 1) * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 3 - 6;
+
+            draw_triangle("/assets/grass.png",
+                            (Vec3){ (float)x,     d0, (float)y },
+                            (Vec3){ (float)x + 1, d1, (float)y },
+                            (Vec3){ (float)x,     d3, (float)y - 1 },
+                            (Vec2){ 128, 128 },
+                            (Vec2){ 128, 0 },
+                            (Vec2){ 0, 128 });
+
+            draw_triangle("/assets/grass.png",
+                            (Vec3){ (float)x + 1, d1, (float)y },
+                            (Vec3){ (float)x + 1, d2, (float)y - 1 },
+                            (Vec3){ (float)x,     d3, (float)y - 1 },
+                            (Vec2){ 128, 0 },
+                            (Vec2){ 0, 0 },
+                            (Vec2){ 0, 128 });
+        }
+    }
+
+    draw_skybox("/assets/miramar/miramar_*.tga");
+    draw_fog(0.9, 1.0, 0.05, (Color){ 140, 147, 160, 255 });
+}
+
+
+static void ingame_end(State *state) {
+    free(state->scene);
+}
+
+
+Scene *ingame_scene(State *state) {
+    (void)state;
+
+    SceneIngame *new_scene = ccalloc(1, sizeof *new_scene);
+    new_scene->base.tick = ingame_tick;
+    new_scene->base.end = ingame_end;
+
+    new_scene->cam = (Camera){ .pos = { 32, 0, 1 }, .up = { 0, 1, 0 }, .fov = (float)M_PI_2 };
+
+    m_audio(m_set(path, "music/mod65.xm"),
+            m_opt(channel, "soundtrack"),
+            m_opt(repeat, true));
+
+    input_set_mouse_captured(true);
+
+    return (Scene *)new_scene;
+}

apps/demos/scenery/scenes/ingame.h

@@ -0,0 +1,25 @@
+#ifndef INGAME_H
+#define INGAME_H
+
+#include "twn_game_api.h"
+
+#include "../state.h"
+#include "scene.h"
+
+
+typedef struct SceneIngame {
+    Scene base;
+
+    Camera cam;
+
+    /* TODO: put this in a better place */
+    float yaw;
+    float pitch;
+    float roll;
+} SceneIngame;
+
+
+Scene *ingame_scene(State *state);
+
+
+#endif

apps/demos/scenery/scenes/scene.c

@@ -0,0 +1,8 @@
+#include "scene.h"
+#include "../state.h"
+
+
+void switch_to(State *state, Scene *(*scene_func)(State *)) {
+    state->next_scene = scene_func(state);
+    state->is_scene_switching = true;
+}

apps/demos/scenery/scenes/scene.h

@@ -0,0 +1,16 @@
+#ifndef SCENE_H
+#define SCENE_H
+
+
+typedef struct State State;
+typedef struct Scene {
+    char *id;
+    void (*tick)(State *);
+    void (*end)(State *);
+} Scene;
+
+
+void switch_to(State *state, Scene *(*scene_func)(State *));
+
+
+#endif

apps/demos/scenery/scenes/title.c

@@ -0,0 +1,61 @@
+#include "title.h"
+#include "ingame.h"
+
+#include "twn_game_api.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+
+static void title_tick(State *state) {
+    SceneTitle *scn = (SceneTitle *)state->scene;
+    (void)scn;
+
+    if (input_is_action_just_pressed("ui_accept")) {
+        switch_to(state, ingame_scene);
+        return;
+    }
+
+
+    m_sprite("/assets/title.png", ((Rect) {
+            ((float)ctx.base_draw_w / 2) - ((float)320 / 2), 64, 320, 128 }));
+    
+    
+    /* draw the tick count as an example of dynamic text */
+    size_t text_str_len = snprintf(NULL, 0, "%lu", state->ctx->tick_count) + 1;
+    char *text_str = cmalloc(text_str_len);
+    snprintf(text_str, text_str_len, "%lu", state->ctx->tick_count);
+
+    const char *font = "/fonts/kenney-pixel.ttf";
+    int text_h = 32;
+    int text_w = draw_text_width(text_str, text_h, font);
+
+    draw_rectangle(
+        (Rect) {
+            .x = 0,
+            .y = 0,
+            .w = (float)text_w,
+            .h = (float)text_h,
+        },
+        (Color) { 0, 0, 0, 255 }
+    );
+    draw_text(text_str, (Vec2){ 0, 0 }, text_h, (Color) { 255, 255, 255, 255 }, font);
+
+    free(text_str);
+}
+
+
+static void title_end(State *state) {
+    free(state->scene);
+}
+
+
+Scene *title_scene(State *state) {
+    (void)state;
+
+    SceneTitle *new_scene = ccalloc(1, sizeof *new_scene);
+    new_scene->base.tick = title_tick;
+    new_scene->base.end = title_end;
+
+    return (Scene *)new_scene;
+}

apps/demos/scenery/scenes/title.h

@@ -0,0 +1,16 @@
+#ifndef TITLE_H
+#define TITLE_H
+
+#include "../state.h"
+#include "scene.h"
+
+
+typedef struct SceneTitle {
+    Scene base;
+} SceneTitle;
+
+
+Scene *title_scene(State *state);
+
+
+#endif

apps/demos/scenery/state.h

@@ -0,0 +1,20 @@
+#ifndef STATE_H
+#define STATE_H
+
+
+#include "twn_game_api.h"
+
+#include <stdbool.h>
+
+
+typedef struct Scene Scene;
+
+typedef struct State {
+    Context *ctx;
+    Scene *scene;
+    Scene *next_scene;
+    bool is_scene_switching;
+} State;
+
+
+#endif